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c - Playing PCM audio (wav) on LInux - Stack Overflow
https://stackoverflow.com/questions/68414260/playing-pcm-audio-wav-on-linux
To read the PCM audio from a wav file, it is best to use a library to decode the audio data from file. As your code didn't decode the audio data, the wav file's data sounds buzzy ! gtkIOStream uses libsox to decode many different types of audio files.
linux - how to play PCM sound file in Ubuntu? - Stack …
https://stackoverflow.com/questions/20314739/how-to-play-pcm-sound-file-in-ubuntu
To use ffplay with signed 16-bit little endian raw PCM, specify -f s16le: ffplay -f s16le -ar 16k -ac 1 snake.raw For a stereo, 32-bit floating-point, 48,000 file specify: ffplay -f f32le -ar 48000 -ac 2 snake.raw For a list of supported formats for the -f option, use ffplay -formats. -ar is the sample rate and -ac is the number of channels.
Dynamic PCM — The Linux Kernel documentation
https://www.kernel.org/doc/html/v4.16/sound/soc/dpcm.html
Dynamic PCM allows an ALSA PCM device to digitally route its PCM audio to various digital endpoints during the PCM stream runtime. e.g. PCM0 can route digital audio to I2S DAI0, I2S DAI1 or PDM DAI2. This is useful for on SoC DSP drivers that expose several ALSA PCMs and can route to multiple DAIs. The DPCM runtime routing is determined by the ALSA mixer settings in the …
Chapter 18. Sound in Linux - University of Cambridge
https://www-uxsup.csx.cam.ac.uk/pub/doc/suse/suse9.0/userguide-9.0/ch18.html
Basic ALSA PCM Types. As of version 0.9 of the Advanced Linux Sound Architecture (ALSA), the concept for PCM devices was substantially modified and expanded. The user can now influence the way ALSA addresses the sound card by selecting a specific PCM type. The main PCM types are hw and plughw.
PCM Audio - COMPLETE GUIDE AND REFERENCE
https://planethifi.com/pcm-audio/
PCM Audio and Home Cinema. PCM audio is used in CD, DVD, Blu-ray, and other digital audio applications. When used in surround sound applications, it is often referred to as Linear PCM audio or Linear Pulse Code Modulation (LPCM). PCM audio produces a series of numbers or digits, and hence this process is called digital. Each one of these digits, though in …
pcm.h - include/sound/pcm.h - Linux source code (v5.16.1 ...
https://elixir.bootlin.com/linux/latest/source/include/sound/pcm.h
Elixir Cross Referencer - Explore source code in your browser - Particularly useful for the Linux kernel and other low-level projects in C/C++ (bootloaders, C libraries...) Linux preempt-rt. Check our new training course. Real-Time Linux with PREEMPT_RT. ... GPL-2.0-or-later */ #ifndef __SOUND_PCM_H #define __SOUND_PCM_H /* * Digital Audio ...
(Sound) what is PCM? what's the difference between …
https://www.linuxquestions.org/questions/linux-general-1/sound-what-is-pcm-what%27s-the-difference-between-pcm-volume-and-master-volume-682409/
Linux - General This Linux ... PCM is for "Pulse Code Modulation"....sound files, essentially. If you turn up Master volume, everything gets louder...headphones, CD, etc. PCM turns up the volume just for sound files, but CD volume would remain the same. Useful if you'd like MP3's to be louder than audio CD's.
ASoC Digital Audio Interface (DAI) — The Linux Kernel ...
https://www.kernel.org/doc/html/v4.14/sound/soc/dai.html
ASoC Digital Audio Interface (DAI) — The Linux Kernel documentation ASoC Digital Audio Interface (DAI) ASoC currently supports the three main Digital Audio Interfaces (DAI) found on SoC controllers and portable audio CODECs today, namely AC97, I2S and PCM. AC97 AC97 is a five wire interface commonly found on many PC sound cards.
What is PCM? [SOLVED] / Newbie Corner / Arch Linux Forums
https://bbs.archlinux.org/viewtopic.php?id=102663
PCM is what comes from the soundcard, it's the P ulse C ode M odulation. For best results, set all channels to 0 dB gain with alsamixer, and use master or speaker dial to adjust volume. Other useful channels: Headphone: usually external speaker. CD: some cd drives have a headphone jack. Line: Line in volume.
Advanced Linux Sound Architecture - ArchWiki
https://wiki.archlinux.org/title/Advanced_Linux_Sound_Architecture
The Advanced Linux Sound Architecture (ALSA) provides kernel driven sound card drivers. It replaces the original Open Sound System (OSS). It replaces the original Open Sound System (OSS). Besides the sound device drivers, ALSA also bundles a user space driven library for application developers.
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