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ALSA - downmix to mono via .asoundrc. - Raspberry Pi Forums
https://forums.raspberrypi.com/viewtopic.php?t=33431
Re: ALSA - downmix to mono via .asoundrc. Sun Apr 21, 2013 7:56 pm If the original issue is still a problem, its been suggested to me that a post to uk.comp.os.linux or uk.rec.audio might elicit helpful info.
Downmixing 8 channel (7.1) audio to stereo with ALSA ...
https://bbs.archlinux.org/viewtopic.php?id=163041
Downmixing 8 channel (7.1) audio to stereo with ALSA. I have a USB DAC that only accepts 16 bit, 44.1kHz stereo audio. Consulting the Arch ALSA wiki page, my /etc/asound.conf is as so: defaults.pcm.rate_converter "samplerate_best" pcm.!surround51 { type vdownmix slave.pcm "default" } pcm.!surround40 { type vdownmix slave.pcm "default" }
audio - mpd fails to open ALSA device where aplay succeeds ...
https://unix.stackexchange.com/questions/180949/mpd-fails-to-open-alsa-device-where-aplay-succeeds
I am trying to set up an Raspberry Pi / Raspbian wheezy audio player using the onboard sound hardware via ALSA LADSPA plugins to stereo downmix and compress the audio. aplay, sox, mpg123, moc (cd ...
Introduction to Sound Programming with ALSA | Linux …
https://www.linuxjournal.com/article/6735
ALSA is a good choice if you are performing low-level audio functions for maximum control and performance or want to make use of special features not supported by other sound APIs. If you already have written an audio application, you may want to add native support for the ALSA sound drivers.
Audio channel downmix 6->2 works, 6->4 just discards ...
https://github.com/mpv-player/mpv/issues/77
The -channels option requests decoder downmix, so it depends entirely on the audio decoder (libavcodec) what happens. -channels 2 is a special case, and the only case that triggers actual mpv-specific downmix. Currently -af pan can be used to remix channels, but it's very "manual" and comes with a complicated command line syntax.. Note that -channels 4 will …
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