[Alsa-user] Alsa virtual device

I am looking for a reference/example to do the following - I have a program with audio output that cannot be redirected/piped to another program from the command line. This program (Kodi) allows me to select the alsa device the sound stream is directed to. I wish to to split a stereo stream

[Alsa-user] Speaker-Test Tone Duration

I am using alsa speaker-test to set my channel gain levels with a spl meter and alsamixer one channel at a time. If I run the follow command line - speaker-test -Dhw:PCH -c 6 -s 1 everything works fine and I hear pink noise from the front left speaker, but the tone doesn't last long enough

[Alsa-user] Master Volume Control on Xonar Sound Cards

First, I have a Xonar D2 sound card. It does not have a separate master volume control in the alsamixer. If I use amixer with the 'Master' option the volume of each individual channel goes up or down depending on whether I execute amixer -c 1 sset Master 1+ & or amixer -c 1 sset Master 1- &

[Alsa-user] Using alsa loopback with surround sound

I am trying to capture surround sound with the alsa loopback device. I have configured the loopback device as sound card 0. I have no .asoundrc file. I am testing the loopback device with ecasound and kodi. I start ecasound (I do not know if this an ecasound or an alsa question) with the fo

[Alsa-user] Ladspa plugin documentation

I am looking for documentation of ladspa plugins to use with alsa. The site www.ladspa.org no longer exists. Could you suggest a link that documents all the plugins and the parameters required for each. I am especially interested in low-pass, high-pass, and band-pass plugins.

[Alsa-user] Understanding Audio Device Mappings

Running ubuntu 14.04. Attached is the output from "aplay -Ll" and "arecord -Ll" for my computer. If select loopback as the sound card and execute - ecasound -i alsahw,0,1,0 -o test.wav I can capture the audio output of a running application to the wave file. What is not clear is what device

[Alsa-user] Xonar D2 spdif input

I am running ubuntu 14.04. I have a Xonar D2 sound card. I wish to capture 5.1 digital input from this sound card. Can this be done in linux and if so which alsa device and options should I use? The device name of the card is 'D2'. My purpose is that I have a hdmi audio dembedder (toslink

[Alsa-user] Playing analog input with volume control

I am running Ubuntu 14.04. I am trying to play the output (amplified to line level) of a turntable through my computer with a volume control that works. The audio output of the computer is via an Nvidia hdmi to a surround sound preamp. The input is the analog line in connection of a Xonar D2

[Alsa-user] Capturing and playing dolby digital steam

I am trying to turn my computer into a surround sound preamp. I am running Ubuntu Studio 14.04. The only audio source that is external to my computer that I do not know how to handle is a tos link from my TiVo carrying a Dolby Digital stream. I have a sound card (Xonar D2) with a toslink inpu

Re: [Alsa-user] Analog line in output via IEC958?

Clemens Ladisch wrote: > Antony Gelberg wrote: > >> I have an onboard NVidia sound card using snd_hda_intel. Full info about my >> setup is at >> http://www.alsa-project.org/db/?f=f407c7aceb5abe36b68731ff50fd1d21f272fb98 >> >> I can output everything to a HT amp via the IEC958 optical out by me

Re: [Alsa-user] Pass through problem

Lee Revell wrote: > On Mon, Feb 23, 2009 at 8:09 AM, Alan Bromborsky wrote: > >> System: Asus M3N78 PRO (On board sound disabled) >> Sound Card: C-Media CMI8738 (Using ALSA mixer) >> OS: Ubuntu 8.10 amd64 (Upgraded 2/22/09) >> >> Problem: Using li

[Alsa-user] Pass through problem

System: Asus M3N78 PRO (On board sound disabled) Sound Card: C-Media CMI8738 (Using ALSA mixer) OS: Ubuntu 8.10 amd64 (Upgraded 2/22/09) Problem: Using line-in on sound card to capture sound from verizon set-top-box. Sound is passed through to sound output (speakers) unless I mute line-in on al