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ALSA Compress-Offload API — The Linux Kernel …
https://www.kernel.org/doc/html/latest/sound/designs/compress-offload.html
Rather than requiring a compatibility break with an API change of the ALSA PCM interface, a new ‘Compressed Data’ API is introduced to provide a control and data-streaming interface for …
ALSA's TinyCompress Audio Library Gets A Release ...
https://www.phoronix.com/forums/forum/software/general-linux-open-source/34600-alsa-s-tinycompress-audio-library-gets-a-release
Phoronix: ALSA's TinyCompress Audio Library Gets A Release Today marks the first tagged release of TinyCompress, a user-space library that takes advantage of ALSA Compressed APIs that were recently introduced in the mainline Linux kernel. This library allows for feeding compressed data like MP3 files directly to ALSA compressed audio devices.
GitHub - alsa-project/tinycompress: The Advanced Linux ...
https://github.com/alsa-project/tinycompress
WHAT tinycompress is a userspace library for anyone who wants to use the ALSA compressed APIs introduced in Linux 3.3 This library provides the APIs to open a ALSA compressed device and read/write compressed data like MP3 etc to it. This also includes a utility command line player (cplay) which demonstrates the usage of this API.
Alsa Opensrc Org - Independent ALSA and linux audio ...
https://alsa.opensrc.org/Ladspa_(plugin)
As you see, the sound is first "smoothed" by dysonCompress slowly (release time=1) then it is passed to fastLookaheadLimiter which pumps it with 20db and limits it to 0 db. If you feel that this filter is too strong, you may want to lower the input gain replacing controls [ 20 0 0.8 ] with controls [ 10 0 0.8 ] And so on, then play with mplayer:
Linux Kernel Documentation :: sound : alsa : compress ...
https://mjmwired.net/kernel/Documentation/sound/alsa/compress_offload.txt
Devices exposing a 205 compressed data interface will be considered as regular ALSA devices; 206 volume changes and routing information will be provided with regular 207 ALSA kcontrols. 208 209 - Embedded audio effects.
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