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c - Continuous recording in PortAudio (from mic or output ...
https://stackoverflow.com/questions/15690668/continuous-recording-in-portaudio-from-mic-or-output
ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream Active …
PortAudio - an Open-Source Cross-Platform Audio API
PortAudio is a free, cross-platform, open-source , audio I/O library. It lets you write simple audio programs in 'C' or C++ that will compile and run on many platforms including Windows, Macintosh OS X, and Unix (OSS/ALSA). It is intended to promote the exchange of audio software between developers on different platforms.
Dmix - Alsa Opensrc Org - Independent ALSA and linux …
https://alsa.opensrc.org/Dmix
The dmix plugin provides for direct mixing of multiple streams. NOTE: For ALSA 1.0.9rc2 and higher you don't need to setup dmix for analogue output. Dmix is enabled by default for soundcards which don't support hardware mixing. You still need to set it up for digital outputs. requires creation of a virtual slave device
Using PortAudio gives errors in precompilation while …
https://github.com/JuliaAudio/PortAudio.jl/issues/103
In the REPL, using PortAudio and creating a stream work just fine and also the available devices seem to have been recognized without problems: julia> using PortAudio julia> PortAudioStream(1, 0; eltype=Int16, samplerate=44100.0, latency...
What is the relation between ALSA and PulseAudio sound ...
https://askubuntu.com/questions/581128/what-is-the-relation-between-alsa-and-pulseaudio-sound-architecture
As far as I know, ALSA is a package of many sound card drivers, and PulseAudio is a audio application that operate the sound data like mixing or equalizer. But why there is a control bar called PCM in the panel of alsamixer. Does that actually change volume by controlling the chip on the sound card? If not, why it isn't PulseAudio'a job?
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