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Alsa Opensrc Org - Independent ALSA and linux audio ...
https://alsa.opensrc.org/HowTo_access_a_mixer_control
We will use the high-level control API. First we need to open an hctl and load its data: Now we need to initialise a snd_ctl_elem_id_t structure which alsa can use to find the control we want. or the name of the control. With this initialised we can use it to get a snd_hctl_elem_t object and a snd_ctl_elem_value_t object.
Audio/Alsamixer - Ubuntu Wiki
https://wiki.ubuntu.com/Audio/Alsamixer
Audio/Alsamixer - Ubuntu Wiki. PulseAudio controls underlying ALSA-level volume controls. To change the ALSA-level volume controls directly, you can do the following: Open a terminal. (The quickest way is the Ctrl-Alt-T shortcut.) Enter "alsamixer" and press the Enter key. You will now see a user interface.
Basics of Alsamixer Audio Control for Linux
https://www.bristolwatch.com/debian/alsamixer.htm
ALSA (Advanced Linux Sound Architecture) is the main Linux sound system. Pulse Audio and Jack operate over ALSA. Alsamixer is a terminal based sound mixer control. It comes with the system and is useful for trouble shooting or checking sound operation. I use it as another low-resource Linux program.
Alsa Opensrc Org - Independent ALSA and linux audio ...
https://alsa.opensrc.org/Mixer
An ALSA mixer is a device that controls the sound inputs and sound outputs on a soundcard. A mixer requires both hardware and software components. The hardware mixer is part of the electronics inside a soundcard. A software mixer is some software which provides a user interface for controlling the hardware mixer.
Alsa Opensrc Org - Independent ALSA and linux audio ...
https://alsa.opensrc.org/Mapping_oss_mixer_controls_to_alsa_mixer
ALSA's OSSEmulation layer (module snd-mixer-oss) is able to map OSS mixer controls to the native ALSA mixer. For example, by default, the OSS mixer's VOLUME control is mapped to the ALSA mixer element called Master, OSS's PCM mixer control is mapped to ALSA's PCM and so on. Unfortunately, this static mapping fails for some cards.
Sound configuration on Raspberry Pi with ALSA
http://blog.scphillips.com/posts/2013/01/sound-configuration-on-raspberry-pi-with-alsa/
Here are my findings on how to control the ALSA system from the command line. All I am focussed on here is getting control of the sound output by the 3.5mm stereo socket. If you want to control the output over the HDMI socket or an external USB sound card then you’ll need to do some of your own investigation.
audio - Alsa volume control without amixer - Raspberry Pi ...
https://raspberrypi.stackexchange.com/questions/68044/alsa-volume-control-without-amixer
While with MPD 5 can control volume for what is played within MPD but it doesn't affect volume if its played outside it, from other sources, such as spotify-connect lib, which uses Alsa mixer to control volume. Is there a way to it (or direct audio signal to MPD)?
ALSA and KXStudio [Linux-Sound] - Linux Audio
https://wiki.linuxaudio.org/wiki/alsa_and_kxstudio
Here we see the main kmix mixer window. kmix displays the controls for each ALSA device on its own separate tab. In this screenshot the 'HDA Intel' onboard audio device is selected. The 'UAC3553B' tab displays controls for a USB audio device whilst 'Playback Streams' can be ignored unless you are using PulseAudio.
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