don fisher wrote:
I am quite familiar with connecting arbitrarily complex audio systems. I
have been trying to understand how the sections of the linux audio plug
together.
For sources I have a microphone, audio and video CDs, and MP3s. For
output I have an audio jack, a bluetooth transmitter.
Is there a mux (or preamp equivalent) that allows one to select and
input and output path? Perhaps also set the gain, balance, base, treble
and loudness.
Pulseaudio has interface controls to handle nearly anything you want to do with
a stream. You need to find and install all the pulse tools like paman,
pavumeter, pavucontrol, and padevchooser.
Is there a document that describes haw to turn on, and then access the
various input and and output channels.
As mentioned in other email, docs on gstreamer, alsa, or pulseaudio are where
you want to look really. There are other sound subsystems but these are where
the real forward movement is in linux audio.
I'm no expert either, but generally applications implement calls to the
gstreamer libraries, the alsa sound subsystem is either used above that (i.e.
pulseaudio is not being used and alsa configuration is all there is), or
pulseaudio is used in combination with alsa with PA being the top-level
interface/system. F9+ use pulseaudio running as a user daemon, interfacing with
alsa controlling the hardware devices, with applications streaming sound in
through gstreamer or direct alsa channels.
--
Andrew Farris <lordmorgul@xxxxxxxxx> www.lordmorgul.net
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