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x1 .CL downloads

All you need for installing your x1 .CL
Application versions, Upgrades & Version history
 

x1 .CL ASIO version downloads

Windows Compatible - 64 bits - Runs on 10, 11, server 2019, 2022
Audio Stream Input/Output (ASIO) is a computer audio interface driver protocol for digital audio specified by Steinberg, providing high data throughput, synchronization, and low latency between a software application and a computer's audio interface or sound card. Thanks to the ASIO version, users can use the x1 .CL without hearing any latency!
 
Release version v1.5.6 - 2025-04-18:
Preview version v1.5.7 - 2025-06-30:
x1 .CL ASIO mode earlier versions
x1 .CL Processing Engine Library changelog

1.5

💡
Linux compatibility : needs GLibC 2.31 and kernel 5.4

1.5.7

(Preview - 2025-06-30)
  • Improve web performance
  • Security updates
  • Library:
    • Corrections in stopping plugins

1.5.6

(Public - 2025-04-18)
  • Security updates
  • Correct PresetManager_InformChange which was not working
  • Cleanup and improve documentation

1.5.5

(Public - 2025-03-31)
  • Fix login problems in web interface
  • Multiple fixes, notably on instances creation/destruction and storage errors
  • Improve performances (lock-free real-time processing)
  • Fix some errors in delay compute with extensions
  • Security update for HTTPS server

1.5.4

(2025-01-13)
  • Library:
    • Better handling of all JSON errors in protocol
    • Corrections for load/unload memory leaks and possible dead-locks
    • Added /licvalid web access to test for license's validity

1.5.3

(2024-10-18)
  • Prevent possible crash on failure to load extension
  • Library executables:
    • Command-line parsing correction

1.5.2

(2024-10-10)
  • Storage: safer read/write of shared folder to avoid empty config.
  • Linux *-proc: Kubernetes Leader election: ensure redirects are stopped by closing connections
  • Security update for HTTPS server
  • Library: support for Darwin/arm64

1.5.1

(2024-07-19)
  • Linux: Added support for Fedora/OpenSuse/ArchLinux-based distributions (for SSL certificates)
  • Linux *-proc: Kubernetes Leader election improvements

1.5.0

(2024-06-07)
  • ARM64: support SVE2 optimizations
  • Correct possible crash with license proxy
  • Executable *-proc:
    • Corrected RTP binding for multiple interfaces
    • Added long style command line options
    • Linux: can use a Kubernetes Leader election to have only one running instance
  • Linux executable:
    • jack : choose best frame number for processing, added more command-line parameterspipewire : added for PipeWire direct integration
  • Library:
    • Applications can set a fixed text answer to /apphealth web address.

1.4

💡
Support for Streaming extension

1.4.9

(2024-04-29)
  • Licenses: correction to be more error resilient
  • Added new GUI themes
  • GUI improvements
⚠️
CRITICAL UPDATE: A critical update has been issued. It is recommended that all users update their configurations in order to address the potential issue of loss of connection with our license servers, which was observed on Friday, April 26, 2024.

1.4.8

(2024-04-05)
  • Added Diversity Delay
  • Optimize license retrieving (especially in file mode)
  • Library:
    • Added LOG_HEADER parameter to prepend logs per instance
    • Correct possible data race error in multiple instances
    • Windows: do not unload plugin libraries to avoid errors
    • Correct memory leak on license failure

1.4.7

(2024-03-15)
  • File mode only: do not allow running without proper license.
  • Library:
    • Added generic C++ wrapper (compatible for all .Cl libraries)
    • Standardize distribution files across distributions
    • Windows only : better handling of network paths

1.4.6

(Preview - 2024-02-29)
  • Licenses: dynamic refresh validity date
  • Library:
    • Added SetMetadataMulti for multiple metadata set at once
    • Completed Windows zip archives with missing documentation
    • Proc executable: Can have different payload for in and out, corrected raw mode, rename default env access key variables

1.4.5

(Testing 2024-02-15)
  • Library:
    • Correction for loading extensions in a different folder

1.4.3

(Testing 2024-02-07)
  • Library:
    • File change watching is not possible in container's volumes : avoid crash (bug since 1.3.8)

1.4.2

(Testing 2024-02-05)
  • GUI improvements

1.4.1

(Testing 2024-02-01)
  • Correction for Stream plugin 0.9.1

1.4.0

(Testing 2024-01-25)
  • Added support for streaming extension
  • Correct undo/redo problem since 1.3.8
  • GUI improvements
  • Library mode:
    • Various possible memory leaks corrected
 

1.3

💡
New license system, more flexible, allowing possible non-realtime processing. The previous license system will be progressively shut down, and definitely shut down on June 30th 2024.

1.3.8

(2023-11-03)
  • Support for per-preset R128 settings
  • Correct band labels display in limiter
  • Support for Kantar Watermarking extension
  • Support for a few different numbers of frames per chunk, selectable at creation.
  • Library
    • Instances can share on air preset and all settings, along with presets. See parameters STATE_FILENAME and STATE_ONAIR.
    • Last on air time saved in state instead of preset for facilitate storage sharing
    • Date/Time in JSON now follows ecma262 format
    • Various fixes in library when loading/unloading, providing invalid data, or race conditions
    • "change" operator in JSON protocol improved

1.3.7

(2023-09-01)
  • Various minor fixes
  • Support for storage monitoring, allowing to share presets between instances
  • Support for optional custom external preset management
  • Correct some rights management
  • Correct some Windows Unicode handling and path vulnerability
  • First support for extensions

1.3.6

(2023-05-26)
  • Correct web reconnection (some control like Operate were doing nothing after reconnecting)
  • Correct date/time storage format

1.3.5

(2023-05-19)
  • Better asynchronous handling, to avoid Web/JSON hangs

1.3.4

(Preview - 2023-04-12)
  • Correct multiple instances starts/stop and authentication
  • Added CSRF protection on forms

1.3.3

(2023-03-31)
  • Correct occasional memory corruption when used with many instances and removing some or quitting

1.3.2

(Testing 2023-03-24)
  • Correct stopping web server when connections are active
  • Library : added mono/stereo planar conversion
  • Fixed I/O conversion tools memory alignment errors (bug since 1.3.0)
  • Interface : do not add quotes to processor name (bug since 1.3.0)

1.3.1

(Testing 2023-03-20)
  • Correct storage (preset load/save) (bug since 1.3.0)
  • Library : added C++ dynamic library loader interface to avoid static linking

1.3.0

(Testing 2023-03-14)
  • Processing
    • Final limiter Improvement
  • Creates more presets on initialization
  • Many web interface improvements
    • Access to parameters in bypassed blocks
    • Improved presets window
    • Various fixes
  • Library
    • Fixed some stopping crashes
    • Added some I/O conversion tools
    • Support non-realtime processing if license allows
  • New license system
BUG: storage is not working, so preset load/save is not possible
 

1.2

💡
Provide a single dynamic library for different OS and architectures, which can be integrated in any software.
Linux compatibility : needs GLibC 2.19 and kernel 3.13
Warning: the license system used by those versions will be shut down soon.

1.2.7

(Testing - 2023-02-23)
  • Correct a memory leak when new browser instances are open (only with internal connected web server)
  • Interface : Keep access to controls in bypass
  • Creates all Legacy presets on new instance

1.2.6

(2023-01-30)
  • Correct Band VUmeter display on top
  • Correct authentication page
  • Correct login/logout redirect behind a reverse proxy
  • Interface improvements
  • Fixed sorting of presets in Preset dialog

1.2.5

(2022-11-23)
  • Correct Preset Import
  • Web interface improvements, with loudness history and band display
  • Web interface : correct login redirect behind reverse proxy
  • Library : corrections to be able to unload/reload instances
  • Library : can get Web server status
  • Library : new API to pass parameters per instance instead of using environment variables (but keep them by default)
  • JSON : can filter wanted changes

1.2.4

(2022-05-16)
  • Added diagram in web interface
  • Put R128 settings in main workspace
  • Support license through proxy for closed networks

1.2.3

(2022-03-14)
  • Correct opened file always increasing while retreiving licenses
  • Improve web interface

1.2.2

(2021-02-23)
Corrected: after network errors while retrieving the license, the process may quit (and restart for Docker) due to a SIGPIPE.
Corrected: for Linux containers, if STATE_DIR was not specified $PWD was used instead of /usr/share/sound4proc.

1.2.1

(2021-01-06)
Works with any Linux on x86_64, armv7, arm64 with kernel>=3.13 and Glibc>=2.19, and with Windows
Correction so multiple instances (simultaneous or consecutive) works.
Local HTTP server correction to use less CPU.
Local web server: delay save changes.
Save changes automatically also when Undo/Redo is used.
Can disable HTTP server, not only HTTPS server.

1.2.0

(2020-12-04)
Works with any Linux on x86_64 with kernel>=3.13 and Glibc>=2.19
The library can handle the web server, either with the process or independently (so you can have a single container or separated ones).
There is a possible authentication system : you have to define some env variable at creation time to activate it.
Both containers (process and server) are using the library, so the main programs are very small now, and server image is the same as process with a different startup program only.
BUG: web server used in with the process: high CPU usage.
 

1.1

💡
Container only versions.

1.1.20

(2020-10-19)
Changes for dynamic library only.

1.1.19

(2020-10-14)
Improved overall optimisation for AVX and AVX512.
Web server supports dynamic certificate changes.
Default ALERT_HANDLE_PACKET_DELAY_MS from 5 to 50ms.
Corrected false error log on timestamps when packets have different sizes.

1.1.18

(2020-10-02)
More agressive compile optimisation.
NOTE: when number of input frames changes, the software falsely reports timestamp errors.

1.1.17

(2020-10-01)
Added some RTP checks and logs.
Set RTP thread in realtime priority, if allowed (might need cap SYS_NICE). Can be adjusted with environment variable SCHED_PRIO. Set SCHED_PRIO=0 to disable, or 1 to 99 (default 10).
Check that incoming RTP packet are processed quickly (<5ms or environment variable ALERT_HANDLE_PACKET_DELAY_MS) to detect CPU overloads.
Small optimizations.
NOTE: when number of input frames changes, the software falsely reports timestamp errors.

1.1.16

(2020-09-28)
Better display on web interface for small devices.
Secure the process errors, to avoid rare floating-point compute errors locking the process, and directly recover the known-possible ones.

1.1.15

(2020-07-16)
When license is invalid, the process now goes to bypass instead of silence.

1.1.14

(2020-07-16)
Added json API, with HTTP get/post/put. For instance:
  • load a preset: http://localhost/json/load/Jazz Ligh
  • get preset list: http://localhost/json/get/presetlist
  • get all possible info: http://localhost/json/get
  • set agc attack to 15: http://localhost/json/set/preset/agc/attack/15

1.1.13

(2020-05-06)
Clean-up AWS_ACCESS vars from env by removing quotes, and extra char at end (CR,LF,TAB,SPC)

1.1.12

(2020-05-06)
Build-chain corrections only.

1.1.11

(2020-05-06)
Use S4_AWS_ACCESS_KEY_ID and S4_AWS_SECRET_ACCESS_KEY by default, to circumvent troubles in AWS environments.
Correct Jazz Light factory
Allow websocket cross-origin

1.1.10

(2020-05-05)
Improved band limiter and lookahead working mode.

1.1.8

(2020-02-12)
Uses RADIO_NAME environment var for licenses.
 

1.0

1.0.33

(2020-01-29)
Support hostnames in command-lines.

1.0.31

(2020-01-17)
Correct Audio format parsing from command-line.
Supported formats are: RTP_SAMPLE_FORMAT=S16_LE, S16_BE, S24_LE, S24_BE, S32_LE, S32_BE, F32_LE, F32_BE

1.0.30

(2020-01-16)
Added R128.

1.0.28

(2019-11-20)
Nice EQ setup in HTML. Many GUI improvements

1.0.5

(2019-11-08)
Improved Preset Import/Export
Lots of GUI improvement.
Sound processing corrections to be closer to card version.

1.0.0

(2019-07-12)
First beta release
 
 

x1 .CL Driver version downloads

Windows Compatible - 64 bits - Runs on 10, 11, server 2019, 2022
Let's explore how your x1 .CL instance integrates with your Windows audio driver. It operates as a soundcard with both input and output capabilities, with x1.CL at its heart. The installation process creates a virtual audio driver expertly crafted by SOUND4 ensuring optimal reliability.
 
Release version v1.5.6 - 2025-04-18:
Preview version v1.5.7 - 2025-06-30:
x1 .CL Driver mode earlier versions
x1 .CL Processing Engine Library changelog

1.5

💡
Linux compatibility : needs GLibC 2.31 and kernel 5.4

1.5.7

(Preview - 2025-06-30)
  • Improve web performance
  • Security updates
  • Library:
    • Corrections in stopping plugins

1.5.6

(Public - 2025-04-18)
  • Security updates
  • Correct PresetManager_InformChange which was not working
  • Cleanup and improve documentation

1.5.5

(Public - 2025-03-31)
  • Fix login problems in web interface
  • Multiple fixes, notably on instances creation/destruction and storage errors
  • Improve performances (lock-free real-time processing)
  • Fix some errors in delay compute with extensions
  • Security update for HTTPS server

1.5.4

(2025-01-13)
  • Library:
    • Better handling of all JSON errors in protocol
    • Corrections for load/unload memory leaks and possible dead-locks
    • Added /licvalid web access to test for license's validity

1.5.3

(2024-10-18)
  • Prevent possible crash on failure to load extension
  • Library executables:
    • Command-line parsing correction

1.5.2

(2024-10-10)
  • Storage: safer read/write of shared folder to avoid empty config.
  • Linux *-proc: Kubernetes Leader election: ensure redirects are stopped by closing connections
  • Security update for HTTPS server
  • Library: support for Darwin/arm64

1.5.1

(2024-07-19)
  • Linux: Added support for Fedora/OpenSuse/ArchLinux-based distributions (for SSL certificates)
  • Linux *-proc: Kubernetes Leader election improvements

1.5.0

(2024-06-07)
  • ARM64: support SVE2 optimizations
  • Correct possible crash with license proxy
  • Executable *-proc:
    • Corrected RTP binding for multiple interfaces
    • Added long style command line options
    • Linux: can use a Kubernetes Leader election to have only one running instance
  • Linux executable:
    • jack : choose best frame number for processing, added more command-line parameterspipewire : added for PipeWire direct integration
  • Library:
    • Applications can set a fixed text answer to /apphealth web address.

1.4

💡
Support for Streaming extension

1.4.9

(2024-04-29)
  • Licenses: correction to be more error resilient
  • Added new GUI themes
  • GUI improvements
⚠️
CRITICAL UPDATE: A critical update has been issued. It is recommended that all users update their configurations in order to address the potential issue of loss of connection with our license servers, which was observed on Friday, April 26, 2024.

1.4.8

(2024-04-05)
  • Added Diversity Delay
  • Optimize license retrieving (especially in file mode)
  • Library:
    • Added LOG_HEADER parameter to prepend logs per instance
    • Correct possible data race error in multiple instances
    • Windows: do not unload plugin libraries to avoid errors
    • Correct memory leak on license failure

1.4.7

(2024-03-15)
  • File mode only: do not allow running without proper license.
  • Library:
    • Added generic C++ wrapper (compatible for all .Cl libraries)
    • Standardize distribution files across distributions
    • Windows only : better handling of network paths

1.4.6

(Preview - 2024-02-29)
  • Licenses: dynamic refresh validity date
  • Library:
    • Added SetMetadataMulti for multiple metadata set at once
    • Completed Windows zip archives with missing documentation
    • Proc executable: Can have different payload for in and out, corrected raw mode, rename default env access key variables

1.4.5

(Testing 2024-02-15)
  • Library:
    • Correction for loading extensions in a different folder

1.4.3

(Testing 2024-02-07)
  • Library:
    • File change watching is not possible in container's volumes : avoid crash (bug since 1.3.8)

1.4.2

(Testing 2024-02-05)
  • GUI improvements

1.4.1

(Testing 2024-02-01)
  • Correction for Stream plugin 0.9.1

1.4.0

(Testing 2024-01-25)
  • Added support for streaming extension
  • Correct undo/redo problem since 1.3.8
  • GUI improvements
  • Library mode:
    • Various possible memory leaks corrected
 

1.3

💡
New license system, more flexible, allowing possible non-realtime processing. The previous license system will be progressively shut down, and definitely shut down on June 30th 2024.

1.3.8

(2023-11-03)
  • Support for per-preset R128 settings
  • Correct band labels display in limiter
  • Support for Kantar Watermarking extension
  • Support for a few different numbers of frames per chunk, selectable at creation.
  • Library
    • Instances can share on air preset and all settings, along with presets. See parameters STATE_FILENAME and STATE_ONAIR.
    • Last on air time saved in state instead of preset for facilitate storage sharing
    • Date/Time in JSON now follows ecma262 format
    • Various fixes in library when loading/unloading, providing invalid data, or race conditions
    • "change" operator in JSON protocol improved

1.3.7

(2023-09-01)
  • Various minor fixes
  • Support for storage monitoring, allowing to share presets between instances
  • Support for optional custom external preset management
  • Correct some rights management
  • Correct some Windows Unicode handling and path vulnerability
  • First support for extensions

1.3.6

(2023-05-26)
  • Correct web reconnection (some control like Operate were doing nothing after reconnecting)
  • Correct date/time storage format

1.3.5

(2023-05-19)
  • Better asynchronous handling, to avoid Web/JSON hangs

1.3.4

(Preview - 2023-04-12)
  • Correct multiple instances starts/stop and authentication
  • Added CSRF protection on forms

1.3.3

(2023-03-31)
  • Correct occasional memory corruption when used with many instances and removing some or quitting

1.3.2

(Testing 2023-03-24)
  • Correct stopping web server when connections are active
  • Library : added mono/stereo planar conversion
  • Fixed I/O conversion tools memory alignment errors (bug since 1.3.0)
  • Interface : do not add quotes to processor name (bug since 1.3.0)

1.3.1

(Testing 2023-03-20)
  • Correct storage (preset load/save) (bug since 1.3.0)
  • Library : added C++ dynamic library loader interface to avoid static linking

1.3.0

(Testing 2023-03-14)
  • Processing
    • Final limiter Improvement
  • Creates more presets on initialization
  • Many web interface improvements
    • Access to parameters in bypassed blocks
    • Improved presets window
    • Various fixes
  • Library
    • Fixed some stopping crashes
    • Added some I/O conversion tools
    • Support non-realtime processing if license allows
  • New license system
BUG: storage is not working, so preset load/save is not possible
 

1.2

💡
Provide a single dynamic library for different OS and architectures, which can be integrated in any software.
Linux compatibility : needs GLibC 2.19 and kernel 3.13
Warning: the license system used by those versions will be shut down soon.

1.2.7

(Testing - 2023-02-23)
  • Correct a memory leak when new browser instances are open (only with internal connected web server)
  • Interface : Keep access to controls in bypass
  • Creates all Legacy presets on new instance

1.2.6

(2023-01-30)
  • Correct Band VUmeter display on top
  • Correct authentication page
  • Correct login/logout redirect behind a reverse proxy
  • Interface improvements
  • Fixed sorting of presets in Preset dialog

1.2.5

(2022-11-23)
  • Correct Preset Import
  • Web interface improvements, with loudness history and band display
  • Web interface : correct login redirect behind reverse proxy
  • Library : corrections to be able to unload/reload instances
  • Library : can get Web server status
  • Library : new API to pass parameters per instance instead of using environment variables (but keep them by default)
  • JSON : can filter wanted changes

1.2.4

(2022-05-16)
  • Added diagram in web interface
  • Put R128 settings in main workspace
  • Support license through proxy for closed networks

1.2.3

(2022-03-14)
  • Correct opened file always increasing while retreiving licenses
  • Improve web interface

1.2.2

(2021-02-23)
Corrected: after network errors while retrieving the license, the process may quit (and restart for Docker) due to a SIGPIPE.
Corrected: for Linux containers, if STATE_DIR was not specified $PWD was used instead of /usr/share/sound4proc.

1.2.1

(2021-01-06)
Works with any Linux on x86_64, armv7, arm64 with kernel>=3.13 and Glibc>=2.19, and with Windows
Correction so multiple instances (simultaneous or consecutive) works.
Local HTTP server correction to use less CPU.
Local web server: delay save changes.
Save changes automatically also when Undo/Redo is used.
Can disable HTTP server, not only HTTPS server.

1.2.0

(2020-12-04)
Works with any Linux on x86_64 with kernel>=3.13 and Glibc>=2.19
The library can handle the web server, either with the process or independently (so you can have a single container or separated ones).
There is a possible authentication system : you have to define some env variable at creation time to activate it.
Both containers (process and server) are using the library, so the main programs are very small now, and server image is the same as process with a different startup program only.
BUG: web server used in with the process: high CPU usage.
 

1.1

💡
Container only versions.

1.1.20

(2020-10-19)
Changes for dynamic library only.

1.1.19

(2020-10-14)
Improved overall optimisation for AVX and AVX512.
Web server supports dynamic certificate changes.
Default ALERT_HANDLE_PACKET_DELAY_MS from 5 to 50ms.
Corrected false error log on timestamps when packets have different sizes.

1.1.18

(2020-10-02)
More agressive compile optimisation.
NOTE: when number of input frames changes, the software falsely reports timestamp errors.

1.1.17

(2020-10-01)
Added some RTP checks and logs.
Set RTP thread in realtime priority, if allowed (might need cap SYS_NICE). Can be adjusted with environment variable SCHED_PRIO. Set SCHED_PRIO=0 to disable, or 1 to 99 (default 10).
Check that incoming RTP packet are processed quickly (<5ms or environment variable ALERT_HANDLE_PACKET_DELAY_MS) to detect CPU overloads.
Small optimizations.
NOTE: when number of input frames changes, the software falsely reports timestamp errors.

1.1.16

(2020-09-28)
Better display on web interface for small devices.
Secure the process errors, to avoid rare floating-point compute errors locking the process, and directly recover the known-possible ones.

1.1.15

(2020-07-16)
When license is invalid, the process now goes to bypass instead of silence.

1.1.14

(2020-07-16)
Added json API, with HTTP get/post/put. For instance:
  • load a preset: http://localhost/json/load/Jazz Ligh
  • get preset list: http://localhost/json/get/presetlist
  • get all possible info: http://localhost/json/get
  • set agc attack to 15: http://localhost/json/set/preset/agc/attack/15

1.1.13

(2020-05-06)
Clean-up AWS_ACCESS vars from env by removing quotes, and extra char at end (CR,LF,TAB,SPC)

1.1.12

(2020-05-06)
Build-chain corrections only.

1.1.11

(2020-05-06)
Use S4_AWS_ACCESS_KEY_ID and S4_AWS_SECRET_ACCESS_KEY by default, to circumvent troubles in AWS environments.
Correct Jazz Light factory
Allow websocket cross-origin

1.1.10

(2020-05-05)
Improved band limiter and lookahead working mode.

1.1.8

(2020-02-12)
Uses RADIO_NAME environment var for licenses.
 

1.0

1.0.33

(2020-01-29)
Support hostnames in command-lines.

1.0.31

(2020-01-17)
Correct Audio format parsing from command-line.
Supported formats are: RTP_SAMPLE_FORMAT=S16_LE, S16_BE, S24_LE, S24_BE, S32_LE, S32_BE, F32_LE, F32_BE

1.0.30

(2020-01-16)
Added R128.

1.0.28

(2019-11-20)
Nice EQ setup in HTML. Many GUI improvements

1.0.5

(2019-11-08)
Improved Preset Import/Export
Lots of GUI improvement.
Sound processing corrections to be closer to card version.

1.0.0

(2019-07-12)
First beta release
 
 

AoIP Download (Debian package)

Connect BIG VOICE .CL, IMPACT .CL & x1 .CL in an AoIP architecture
💡
The main challenge for the AoIP version is achieving low latency for live applications. This requirement necessitates using the Linux operating system, there are no Windows-compatible versions.
💡
AoIP .CL is compatible with AMD64 and ARM64 hardware
SOUND4 AoIP can be installed on any Debian-compatible distribution, from Raspberry Pi 5 to conventional PC computers or servers
⚠️
We increasingly recommend using Debian versions without a graphical environment to maximize low-latency performance.
💡

Latest Release versions v1.0.11 - 2025-06-30

AoIP .CL changelog

1.0

1.0.11

(Public - 2025-06-30)
  • Detect multi-source conflicts
  • HTML optimization
  • Security updates

1.0.10

(Public - 2025-05-12)
  • Do not change network interface automatically when not available
  • Backup include plugins

1.0.9

(Public - 2025-05-06)
  • Correct Livewire advertising's network interface for sending

1.0.8

(Public - 2025-05-02)
  • Correct creation of initial configuration

1.0.7

(Public - 2025-04-18)
  • Fixes to receive mono streams
  • Corrections when stream changes
  • Instances are created even without stream received
  • HTML interface improvement
  • Complete backup and restore of configuration, presets, streaming and watermarking

1.0.6

(Public - 2025-04-03)
  • Correction for AES67 streams and SAP advertising
  • Add CPU usage information

1.0.5

  • First public version

Only two steps are necessary for installing SOUND4 AoIP:

  1. Configure SOUND4SOFT repository
wget https://deb.sound4soft.com/sound4soft-archive-keyring.deb
sudo dpkg -i ./sound4soft-archive-keyring.deb
sudo apt update
  1. Installing SOUND4 AoIP.CL
sudo apt --install-recommends install sound4.aoip.cl
You are ready now for configuring your AoIP .CL, simply access the Raspberry Pi's IP address from any computer on the same network to open the user-friendly interface (no port needed).
💡
If you want more details or need to customize your installation, a detailed installation procedure is available here: Link
 
 

x1 .CL Librairies version downloads

Compatible Win-32, Win-64, Aarch-64, Armv7, x86-64
SOUND4 processing engines function as libraries, serving as the main processing components in all virtualized versions. These libraries are natively used to integrate our virtualized products as third-party solutions for software editors, ISPs, streaming companies, and broadcasting companies. Naturally, several of our esteemed manufacturing partners also recognize the immense potential of integrating SOUND4 products into their own offerings…
These libraries are intended for advanced users. Help files are integrated with all versions to support SOUND4 processing engine integrations.

Librairies:

Release versions v1.5.6 - 2025-04-18:
Preview versions v1.5.7 - 2025-06-30:
x1 .CL Librairies version earlier versions
1.5.5
1.5.4
1.5.2
1.5.1
1.5.0
1.4.8
1.4.7
1.4.6
1.4.5
1.4.3
1.4.1
1.4.0
x1 .CL Processing Engine Library changelog

1.5

💡
Linux compatibility : needs GLibC 2.31 and kernel 5.4

1.5.7

(Preview - 2025-06-30)
  • Improve web performance
  • Security updates
  • Library:
    • Corrections in stopping plugins

1.5.6

(Public - 2025-04-18)
  • Security updates
  • Correct PresetManager_InformChange which was not working
  • Cleanup and improve documentation

1.5.5

(Public - 2025-03-31)
  • Fix login problems in web interface
  • Multiple fixes, notably on instances creation/destruction and storage errors
  • Improve performances (lock-free real-time processing)
  • Fix some errors in delay compute with extensions
  • Security update for HTTPS server

1.5.4

(2025-01-13)
  • Library:
    • Better handling of all JSON errors in protocol
    • Corrections for load/unload memory leaks and possible dead-locks
    • Added /licvalid web access to test for license's validity

1.5.3

(2024-10-18)
  • Prevent possible crash on failure to load extension
  • Library executables:
    • Command-line parsing correction

1.5.2

(2024-10-10)
  • Storage: safer read/write of shared folder to avoid empty config.
  • Linux *-proc: Kubernetes Leader election: ensure redirects are stopped by closing connections
  • Security update for HTTPS server
  • Library: support for Darwin/arm64

1.5.1

(2024-07-19)
  • Linux: Added support for Fedora/OpenSuse/ArchLinux-based distributions (for SSL certificates)
  • Linux *-proc: Kubernetes Leader election improvements

1.5.0

(2024-06-07)
  • ARM64: support SVE2 optimizations
  • Correct possible crash with license proxy
  • Executable *-proc:
    • Corrected RTP binding for multiple interfaces
    • Added long style command line options
    • Linux: can use a Kubernetes Leader election to have only one running instance
  • Linux executable:
    • jack : choose best frame number for processing, added more command-line parameterspipewire : added for PipeWire direct integration
  • Library:
    • Applications can set a fixed text answer to /apphealth web address.

1.4

💡
Support for Streaming extension

1.4.9

(2024-04-29)
  • Licenses: correction to be more error resilient
  • Added new GUI themes
  • GUI improvements
⚠️
CRITICAL UPDATE: A critical update has been issued. It is recommended that all users update their configurations in order to address the potential issue of loss of connection with our license servers, which was observed on Friday, April 26, 2024.

1.4.8

(2024-04-05)
  • Added Diversity Delay
  • Optimize license retrieving (especially in file mode)
  • Library:
    • Added LOG_HEADER parameter to prepend logs per instance
    • Correct possible data race error in multiple instances
    • Windows: do not unload plugin libraries to avoid errors
    • Correct memory leak on license failure

1.4.7

(2024-03-15)
  • File mode only: do not allow running without proper license.
  • Library:
    • Added generic C++ wrapper (compatible for all .Cl libraries)
    • Standardize distribution files across distributions
    • Windows only : better handling of network paths

1.4.6

(Preview - 2024-02-29)
  • Licenses: dynamic refresh validity date
  • Library:
    • Added SetMetadataMulti for multiple metadata set at once
    • Completed Windows zip archives with missing documentation
    • Proc executable: Can have different payload for in and out, corrected raw mode, rename default env access key variables

1.4.5

(Testing 2024-02-15)
  • Library:
    • Correction for loading extensions in a different folder

1.4.3

(Testing 2024-02-07)
  • Library:
    • File change watching is not possible in container's volumes : avoid crash (bug since 1.3.8)

1.4.2

(Testing 2024-02-05)
  • GUI improvements

1.4.1

(Testing 2024-02-01)
  • Correction for Stream plugin 0.9.1

1.4.0

(Testing 2024-01-25)
  • Added support for streaming extension
  • Correct undo/redo problem since 1.3.8
  • GUI improvements
  • Library mode:
    • Various possible memory leaks corrected
 

1.3

💡
New license system, more flexible, allowing possible non-realtime processing. The previous license system will be progressively shut down, and definitely shut down on June 30th 2024.

1.3.8

(2023-11-03)
  • Support for per-preset R128 settings
  • Correct band labels display in limiter
  • Support for Kantar Watermarking extension
  • Support for a few different numbers of frames per chunk, selectable at creation.
  • Library
    • Instances can share on air preset and all settings, along with presets. See parameters STATE_FILENAME and STATE_ONAIR.
    • Last on air time saved in state instead of preset for facilitate storage sharing
    • Date/Time in JSON now follows ecma262 format
    • Various fixes in library when loading/unloading, providing invalid data, or race conditions
    • "change" operator in JSON protocol improved

1.3.7

(2023-09-01)
  • Various minor fixes
  • Support for storage monitoring, allowing to share presets between instances
  • Support for optional custom external preset management
  • Correct some rights management
  • Correct some Windows Unicode handling and path vulnerability
  • First support for extensions

1.3.6

(2023-05-26)
  • Correct web reconnection (some control like Operate were doing nothing after reconnecting)
  • Correct date/time storage format

1.3.5

(2023-05-19)
  • Better asynchronous handling, to avoid Web/JSON hangs

1.3.4

(Preview - 2023-04-12)
  • Correct multiple instances starts/stop and authentication
  • Added CSRF protection on forms

1.3.3

(2023-03-31)
  • Correct occasional memory corruption when used with many instances and removing some or quitting

1.3.2

(Testing 2023-03-24)
  • Correct stopping web server when connections are active
  • Library : added mono/stereo planar conversion
  • Fixed I/O conversion tools memory alignment errors (bug since 1.3.0)
  • Interface : do not add quotes to processor name (bug since 1.3.0)

1.3.1

(Testing 2023-03-20)
  • Correct storage (preset load/save) (bug since 1.3.0)
  • Library : added C++ dynamic library loader interface to avoid static linking

1.3.0

(Testing 2023-03-14)
  • Processing
    • Final limiter Improvement
  • Creates more presets on initialization
  • Many web interface improvements
    • Access to parameters in bypassed blocks
    • Improved presets window
    • Various fixes
  • Library
    • Fixed some stopping crashes
    • Added some I/O conversion tools
    • Support non-realtime processing if license allows
  • New license system
BUG: storage is not working, so preset load/save is not possible
 

1.2

💡
Provide a single dynamic library for different OS and architectures, which can be integrated in any software.
Linux compatibility : needs GLibC 2.19 and kernel 3.13
Warning: the license system used by those versions will be shut down soon.

1.2.7

(Testing - 2023-02-23)
  • Correct a memory leak when new browser instances are open (only with internal connected web server)
  • Interface : Keep access to controls in bypass
  • Creates all Legacy presets on new instance

1.2.6

(2023-01-30)
  • Correct Band VUmeter display on top
  • Correct authentication page
  • Correct login/logout redirect behind a reverse proxy
  • Interface improvements
  • Fixed sorting of presets in Preset dialog

1.2.5

(2022-11-23)
  • Correct Preset Import
  • Web interface improvements, with loudness history and band display
  • Web interface : correct login redirect behind reverse proxy
  • Library : corrections to be able to unload/reload instances
  • Library : can get Web server status
  • Library : new API to pass parameters per instance instead of using environment variables (but keep them by default)
  • JSON : can filter wanted changes

1.2.4

(2022-05-16)
  • Added diagram in web interface
  • Put R128 settings in main workspace
  • Support license through proxy for closed networks

1.2.3

(2022-03-14)
  • Correct opened file always increasing while retreiving licenses
  • Improve web interface

1.2.2

(2021-02-23)
Corrected: after network errors while retrieving the license, the process may quit (and restart for Docker) due to a SIGPIPE.
Corrected: for Linux containers, if STATE_DIR was not specified $PWD was used instead of /usr/share/sound4proc.

1.2.1

(2021-01-06)
Works with any Linux on x86_64, armv7, arm64 with kernel>=3.13 and Glibc>=2.19, and with Windows
Correction so multiple instances (simultaneous or consecutive) works.
Local HTTP server correction to use less CPU.
Local web server: delay save changes.
Save changes automatically also when Undo/Redo is used.
Can disable HTTP server, not only HTTPS server.

1.2.0

(2020-12-04)
Works with any Linux on x86_64 with kernel>=3.13 and Glibc>=2.19
The library can handle the web server, either with the process or independently (so you can have a single container or separated ones).
There is a possible authentication system : you have to define some env variable at creation time to activate it.
Both containers (process and server) are using the library, so the main programs are very small now, and server image is the same as process with a different startup program only.
BUG: web server used in with the process: high CPU usage.
 

1.1

💡
Container only versions.

1.1.20

(2020-10-19)
Changes for dynamic library only.

1.1.19

(2020-10-14)
Improved overall optimisation for AVX and AVX512.
Web server supports dynamic certificate changes.
Default ALERT_HANDLE_PACKET_DELAY_MS from 5 to 50ms.
Corrected false error log on timestamps when packets have different sizes.

1.1.18

(2020-10-02)
More agressive compile optimisation.
NOTE: when number of input frames changes, the software falsely reports timestamp errors.

1.1.17

(2020-10-01)
Added some RTP checks and logs.
Set RTP thread in realtime priority, if allowed (might need cap SYS_NICE). Can be adjusted with environment variable SCHED_PRIO. Set SCHED_PRIO=0 to disable, or 1 to 99 (default 10).
Check that incoming RTP packet are processed quickly (<5ms or environment variable ALERT_HANDLE_PACKET_DELAY_MS) to detect CPU overloads.
Small optimizations.
NOTE: when number of input frames changes, the software falsely reports timestamp errors.

1.1.16

(2020-09-28)
Better display on web interface for small devices.
Secure the process errors, to avoid rare floating-point compute errors locking the process, and directly recover the known-possible ones.

1.1.15

(2020-07-16)
When license is invalid, the process now goes to bypass instead of silence.

1.1.14

(2020-07-16)
Added json API, with HTTP get/post/put. For instance:
  • load a preset: http://localhost/json/load/Jazz Ligh
  • get preset list: http://localhost/json/get/presetlist
  • get all possible info: http://localhost/json/get
  • set agc attack to 15: http://localhost/json/set/preset/agc/attack/15

1.1.13

(2020-05-06)
Clean-up AWS_ACCESS vars from env by removing quotes, and extra char at end (CR,LF,TAB,SPC)

1.1.12

(2020-05-06)
Build-chain corrections only.

1.1.11

(2020-05-06)
Use S4_AWS_ACCESS_KEY_ID and S4_AWS_SECRET_ACCESS_KEY by default, to circumvent troubles in AWS environments.
Correct Jazz Light factory
Allow websocket cross-origin

1.1.10

(2020-05-05)
Improved band limiter and lookahead working mode.

1.1.8

(2020-02-12)
Uses RADIO_NAME environment var for licenses.
 

1.0

1.0.33

(2020-01-29)
Support hostnames in command-lines.

1.0.31

(2020-01-17)
Correct Audio format parsing from command-line.
Supported formats are: RTP_SAMPLE_FORMAT=S16_LE, S16_BE, S24_LE, S24_BE, S32_LE, S32_BE, F32_LE, F32_BE

1.0.30

(2020-01-16)
Added R128.

1.0.28

(2019-11-20)
Nice EQ setup in HTML. Many GUI improvements

1.0.5

(2019-11-08)
Improved Preset Import/Export
Lots of GUI improvement.
Sound processing corrections to be closer to card version.

1.0.0

(2019-07-12)
First beta release
 
 

Stream .CL libraries downloads

💡
Stream.CL extension supports only Live mode.

Librairies:

Release versions v1.1.5 - 2025-04-18:
Preview versions v1.1.6 - 2025-06-30:
Stream .CL Librairies version earlier versions
1.1.4
1.1.3
1.1.2
1.1.1
1.1.0
1.0.2
1.0.1
1.0.0
Stream .CL Librairies version changelog

1.1

💡
Linux compatibility : needs GLibC 2.31 and kernel 5.4

1.1.6

(Preview 2025-06-30)
  • Better lock-free processing, avoiding some spurious high CPU usage on some x86 processors
  • Security updates
  • Library:
    • Corrections in stopping plugins
    • Correct little memory leaks on exit

1.1.5

(Public 2025-04-18)
  • Security updates
  • Correct PresetManager_InformChange which was not working
  • Cleanup and improve documentation

1.1.4

(Public 2025-03-31)
  • Multiple fixes, notably on instances creation/destruction and storage errors, and log headers
  • Improve performances (lock-free real-time processing)
  • Library:
    • Add parameter STREAM_THREAD_PRIO to force streaming threads' priorities
    • Fix possible long initializing tasks running in processing's thread

1.1.3

(2024-12-28)
  • Library:
    • Better handling of all JSON errors in protocol

1.1.2

(2024-10-10)
  • HLS corrections
  • Various minor encoding fixes
  • Minor security update
  • Library: support for Darwin/arm64 (beta)

1.1.1

(2024-07-19)
  • Library: Reuse CA certificate configuration from main process for streamers.

1.1.0

(2024-06-07)
  • ARM64: support SVE2 optimisations
  • Correct possible crash with license proxy
 

1.0

1.0.2

(2024-04-26)
  • Licenses: correction to be more error resilient

1.0.1

(2024-04-05)
  • Optimize license retrieving (especially in file mode)
  • Library:
    • Correct possible data race error in multiple instances
    • Correct memory leak on license failure

1.0.0

(Preview - 2024-02-29)
  • MPEG-TS: send metadata in ID3 PES stream
  • Can set cut-off frequency for codecs which support it
  • MP3: can disable bit-reservoir
  • Licenses: dynamic refresh validity date
 

0.9

💡
Preliminary testing versions.
Linux compatibility : needs GLibC 2.19 and kernel 3.13

0.9.5

(Testing 2024-02-15)
  • Library:
    • Correction for loading extensions in a different folder

0.9.3

(Testing 2024-02-07)
  • Library:
    • File change watching is not possible in container's volumes : avoid crash

0.9.2

(Testing 2024-02-02)
  • Metadata TCP server : Correct metadata parsing when received by chunks in XML or JSON modes.

0.9.1

(Testing 2024-02-01)
  • Metadata TCP server : listen both IPv4 and IPv6 in Windows

0.9.0

(Testing 2024-01-25)
  • First version for testing
 
 

KANTAR .CL Libraries downloads

💡
KANTAR.CL can work only on :
  • Windows x86_64
  • Linux x86_64
  • Linux ARM64 (since 1.1.1)
It is using KANTAR libraries, which are compatible with Ubuntu 22.04 LTS (since 1.1.1) or Debian 9 (before 1.1.1).

Librairies:

Release versions v1.1.5 - 2025-04-18:
Preview versions v1.1.6 - 2025-06-30:
KANTAR .CL Libraries version earlier versions
1.1.4
1.1.3
1.1.2
1.1.1
1.1.0
1.0.10
1.0.9
1.0.8
1.0.7
1.0.6
1.0.4
1.0.3
1.0.2
1.0.1
1.0.0
KANTAR .CL Libraries version changelog

1.1

💡
Linux compatibility : needs GLibC 2.31 and kernel 5.4

1.1.6

(Preview 2025-06-30)
  • Security updates
  • Library:
    • Corrections in stopping plugins
    • Be sure to force Kantar threads affinity as process' thread

1.1.5

(Public 2025-04-18) (KANTAR CERTIFIED)
  • Security updates
  • Correct PresetManager_InformChange which was not working
  • Cleanup and improve documentation

1.1.4

(Public 2025-03-31)
  • Watermarking threads' priorities follows main process' priorities
  • Multiple fixes, notably on instances creation/destruction and storage errors
  • Improve performances (lock-free real-time processing)
  • Improvement of general delay when extension is not in service

1.1.3

(2024-12-18) (KANTAR CERTIFIED)
  • Library:
    • Better handling of all JSON errors in protocol

1.1.2

(2024-10-10)
  • Minor security update

1.1.1

(2024-07-19)
  • Update KANTAR library to version 9.0 (Ubuntu 22.04 LTS/glibc 2.35)
  • Correct protection when destroying/reconfiguring the watermarking

1.1.0

(2024-06-07) (KANTAR CERTIFIED)
  • Correct possible crash with license proxy
 

1.0

💡
Linux compatibility : needs GLibC 2.19 and kernel 3.13
 
1.0.11
(2024-04-26)
  • Licenses: correction to be more error resilient

1.0.10

(2024-04-05)
  • Optimize license retrieving (especially in file mode)
  • Library:
    • Correct possible data race error in multiple instances
    • Correct memory leak on license failure

1.0.9

(2024-03-15)
  • Avoid logging errors when watermark is off

1.0.8

(2024-03-08)
  • File mode only: do not allow running without proper license, if watermarking is on
  • Library:
    • Standardize distribution files across distributions

1.0.7

(Preview - 2024-02-29)
  • Licenses: dynamic refresh validity date

1.0.6

(Testing 2024-02-15)
  • Library:
    • Correction for loading extensions in a different folder

1.0.4

(Testing 2024-02-07)
  • Library:
    • File change watching is not possible in container's volumes : avoid crash

1.0.3

(Testing 2024-02-02)
  • If online license is used, check connection to KANTAR license server before calling SDK to avoid long timeouts.

1.0.2

(Testing 2024-02-01)
  • Default mode to Offline license (temporary fix for closed networks, if KANTAR_OfflineLicense is not set to 1)
  • Library mode:
    • Correct multiple library load/unload

1.0.1

(Testing 2024-01-25)
  • Various minor fixes on GUI display
  • Library mode:
    • Use parameters instead of metadata for initial setup
    • Various possible memory leaks corrected

1.0.0

(2023-11-02) (KANTAR CERTIFIED)
  • Support both online and offline licenses
  • Support Live and File modes
  • Update KANTAR library 8.2 (Debian 9/glibc 2.24/kernel 4.9)