Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the Linux operating system.

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After updating archlinux, the maximum volume is far too low

I booted my Archlinux PC today and opened Mumble, and found that I couldn't hear anyone, so I opened some music and I couldn't hear that. After turning my volume to the maximum possible level in ...
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5 views

Default bluetooth device not allow to record from another device

I have already set the bluetooth device as default device for recording the audio. But I have add the another usb audio device for recording, the bluetooth device not allow the usb device to record ...
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11 views

ALSA access to multichannel audio card instead of jackd

I have a HDSP9652 multichannel audio card connected to two ferrofish A16 ADAT-to-analog audio breakout boxes, all this is running headless under Ubuntu 13.10, Linux kernel 3.11. Using jackd 0.122, I ...
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29 views

Using 5.1 surround to play back 3 independent stereo streams

I built a small home server recently. It runs Ubuntu Server 12.04 and has a sound card (Via VT1708) with 3 audio jacks - which I want to use as 3 independent stereo outputs to play back (potentially ...
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12 views

Temporarily disable ALSA soundcard (mic)

I have a Linux application where I'd like to temporarily disable audio input from a specific device. Is this possible to do somehow? The system is running Alsa & pulseaudio. Ideally it I'd like ...
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37 views

Gigabyte Brix TOSLINK/SPDIF with Archlinux

I tried setting up the combo analog/digital out on this little box with the help of this adapter, but I can't get it to output anything digital... aplay -l tells me that card 1 device 1 is "ALC269VC ...
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1answer
20 views

Automatically switch on speakers when there are Alsa clients

I want to connect a relay to one of the GPIOs of my Raspberry Pi. This relay supplies power to the speakers. I would like my speakers to be on only when there is sound activity. I am looking for ...
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2answers
59 views

Turning speaker beep off by alsamixer permanently

Debian 7, x64. I can turn off the beep by reducing Speaker bar volume in alsamixer to 0. However, after reboot speaker volume in alsamixer is set to 100% again. How can I turn off speker beep ...
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53 views

How can I use a virtual sound card without the hardware?

I'm trying to generate and stream audio+video via aconv to a remote location such as Youtube from a headless linux server, which will then be multicasted out to the internet at large. I have ...
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27 views

How can I set setup an audiodelay for the complete audio output in linux?

Can someone tell me how I can setup a delay (0.1s - 0.5s) on the complete audio output on my raspberry pi? I am running the Raspyfi Distro and it's using the alsa sound driver. Thank you very much!
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1answer
90 views

ALSA “dmix plugin supports only playback stream” error when using dmix on beagleboard

On a Beagleboard, I need it to play sound from several processes. The default /etc/asound.conf is empty, so I put this dmix example in. Now sund mixes fine, but when I'm trying to run a process that ...
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13 views

on pin configuration in ALSA

I seek explanation for a strange behavior: as my codec dump can testify, I have speakers on pin 0x14 and HP on 0x15 (and, possibly, ext MIC at 0x18 and int MIC at 0x19), then why does the command ...
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93 views

Record Audio From USB device using FFmpeg

I am trying to record an MP3 file from an audio device connected to the USB port using ffmpeg. I am on a Windows 7 machine, and I am trying to do this from a command line: ffmpeg -f alsa -i hw:0 -ac ...
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24 views

Java Exclusive MIDI usage workaround?

I'm using a java applet, Jalmus to be specific, that implements MIDI usage. Whenever Jalmus is running, MIDI Input works (Midi Out doesn't but I don't need that) however, when attempting to connect ...
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1answer
60 views

No sound from headphones. Ubuntu on iMac

I have a fresh ubuntu on iMac. I have managed to set up the sound from the native speakers, however, there is still no sound from the headphones. I have disabled automute in alsamixer, but this didn't ...
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144 views

Virtual ALSA Device for redirecting Output to physical input

I am trying this for over 10 days now, several hours a day. i have a ubuntu 12.04 server box, no x-server. on this machine runs a ruby application, and a C application, both bought from an external ...
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135 views

linux mint VIA sound issue

So I installed linux Mint 15 "Olivia" 64 bit on my Mecer W550EU laptop I have HD Audio with a VIA chipset charles-W55xEU charles # lsmod | grep snd snd_hda_codec_hdmi 36913 1 snd_hda_codec_via ...
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75 views

What's the proper way to forward audio from i386 executables that use ALSA to an x64 pulse server?

I'm running Kubuntu Raring x64, and I had a program that I was unable to compile under my 64-bit environment but there was an already compiled version (32-bit) available for download (specifically ...
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257 views

No sound output or hardware to choose from in gnome sound settings

There is no sound output when I try to play music or videos etc. When I run $ speaker-test I get speaker-test 1.0.25 Playback device is default Stream parameters are 48000Hz, S16_LE, 1 ...
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2answers
477 views

Playing mp3 in quodlibet displays “GStreamer output pipeline could not be initialized” error

I'm running Debian testing x64 with all updates. I install quodlibet 2.4 from the repository and added mp3's to my library. When I play them, however, I receive an output error: GStreamer output ...
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1answer
106 views

Set up a virtual capture device using ALSA

I am looking to set up a radio stream on my local network using a Linux box with ALSA. My first idea was to just have it capture the sound output, but this can be annoying for several reasons. (For ...
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1answer
149 views

Using loopbacks and null-sink cause extreme distortion after 20-30s during ffmpeg recording

I'm trying to record both video, speaker sounds and microphone sounds at the same time. To deal with the audio, I set up two loopbacks (one for microphone, one for speakers): pactl load-module ...
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1answer
364 views

Microphones not working on Apple Macbook Air 1,1 (Early 2008; A1237) under Linux

I'm running Linux on the MBA. I can't make the microphones (neither external nor internal) work. I test using alsamixer and arecord -Dhw -fdat -vv mic.wav together with aplay -Dhw -vv mic.wav It ...
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1answer
514 views

Alsamixer won't work with bluetooth device

I'm running Debian unstable. My .asoundrc looks like this: pcm.btheadset { type plug slave { pcm { type bluetooth device 5A:5A:5A:A6:08:09 profile ...
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55 views

Create a virtual input for ALSA applications using PulseAdio

I need to run an application using Wine. But Wine uses ALSA by default, it still doesn't support PulseAudio. Now: I need to create a virtual sound source for this application, but I have no idea how ...
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217 views

Linux noob trying to get headset to work

I am trying to get my headset (Logitech H390) to work on a new linux installation (centos 6.4). Unfortunately I am unable to hear anything from the headset. I have tried several options from the sound ...
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2answers
835 views

How to make Alsa pick a preferred sound device automatically?

I bought an USB sound card. I'd like to set up my Linux desktop so that it prefers the USB device, if it is plugged in and automatically switches as the device is (un)plugged. Is it possible, and how? ...
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49 views

Record line-in audio from two applications using Alsa

Im currently working on an small application which runs on a cubieboard (ARMv7, rasp-pi-like). What I really need to do is, accessing and recording the line-in audio-signal from two different ...
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1answer
735 views

No sound on Debian 7 stable

I have Debian 7.1. Today I have lost an ability to listening to music. I can hear sound played by speaker-test, mplayer and some applications sound (eg. Skype sound notifications). But I have problems ...
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44 views

ALSA - Codec Registration

My Codec is registered after SOC init is done. In SOC init, ALSA cannot find codec registered and hence defer the sound card registration. Later when I register codec, its entry is not registered in ...
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1answer
110 views

Reconfigure line-in as analog-out

I am trying to reconfigure my "line in" as another "analog out" and use it alongside with the default analog out port. I am using an onboard realtek sound card. It is very simple to do this in ...
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3answers
6k views

linux arecord: capture sound card output rather than microphone input

I am trying to capture sound card output and encode it in Vorbis ogg format using the following command: arecord -f cd -t raw | oggenc - -r -o file.ogg However, the computer's microphone input is ...
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1answer
924 views

Prevent applications to control master volume on Linux

Whenever I change the volume in VLC, Rhythmbox, or a video on YouTube, it change the master volume, i.e. the system volume. How can I prevent this from happening? I'm running Debian 7.0.0 (wheezy) ...
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1answer
170 views

Recording using arecord creates thousands of files

I was trying to use arecord to record a wav file, but instead of recording to one file, it created tens of thousands of files (around 60000). This happened after I had installed the alsaequal package. ...
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2answers
79 views

aoss is preventing file logging - logging argument commands

I am using an application which requires aoss. The results are required to be appended to a file. When I write these commands, the file is always empty: aoss multimon -a DTMF | tee test.txt aoss ...
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3answers
330 views

How do I get a volume OSD just like the one in OSX?

I'm using a Dell Studio laptop which has volume up/down hotkeys. On pressing these, I want a volume OSD to popup to show my current volume status just like in OSX; that is, just like: Anybody know ...
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3answers
935 views

ALSA - no surround playback with mplayer

When I run: speaker-test -c6 ...everything is fine. I get 5.1 playback. However, when I run: mplayer -channels 6 "some video with 5.1 audio" no audio plays. Here is what appears in the ...
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367 views

ALSA buffer xrun when recording with ffmpeg

Is there any way to increase the ALSA buffer size? When running this command: ffmpeg -f alsa -ac 2 -i hw:1 -ar 44100 -b 64k output.mp3 I get a "ALSA buffer xrun" before my system locks up Input ...
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1answer
389 views

ffmpeg udp audio livestream

Having trouble getting the following command to stream audio through udp, is there a parameter missing? ffmpeg -f alsa -ac 1 -i hw:1 -ar 44100 -f mpegts udp://10.255.255.255:10000?pkt_size=1316 The ...
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304 views

How is pulseaudio stitched together?

OK. Pre-post note; this became ugly long, - but the core of an problem is that I'm unable to find good articles or diagrams and explanations on this. There is a lot of "how too"s, but I'm having a ...
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2answers
268 views

alsa minimal configuration

I'm studying ALSA and I'm stuck with this alsa.conf file I need the most simplest conf file which can get my /dev/snd/controlC0 to work all my conf files (empty confs or some try with pcm.defaults ...
12
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1answer
667 views

Linux - Creating Virtual Audio Device

My question here is rather simple. How does one create a purely virtual audio device in ALSA that would be capable of: being used as an audio output destination, being used as an audio input source, ...
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217 views

alsaloop: What happens on a buffer underrun?

I am tuning my sound interface latency with alsaloop -C hw:1,0 -P hw:1,0 -t $LATENCY_US When I set $LATENCY_US to 30000, I get around 20% CPU usage. I can restart this a few times and make some ...
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0answers
22 views

ALSA sound cannot get below 18%

My in-ear earphones are very loud, and I want to get them to be quieter. alsamixer works until it gets to 18% or "-45 dB". Then when I want it get even quieter, it jumps all the way to zero. 5 or 6 ...
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190 views

Wine screws up Pulseaudio and USB audio card when already playing ALSA stream

My setup is a Thinkpad T420 with Creative X-Fi USB audio card. Everything usually works fine, I can play multiple streams and arbitrarily move streams from one audio card to another. One use case ...
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1answer
18 views

anyway to take a 'snapshot' of alsamixer?

my audio card has some issues under ubuntu. everytime i fiddle with the volume, it messes up microphone. i can't set the microphone at all under ubuntu GUI. it tries to assume things from the ...
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1answer
544 views

VLC through a custom ALSA device

How can I make VLC playing through some of my custom ALSA devices? I created several custom ALSA devices (for routing, amplifying, mixing and other purposes) and can use them with Mplayer without any ...
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1answer
899 views

Set device when using gst-launch alsasrc

As part of my Sphinx setup, I listen to my input device like this: gst-launch alsasrc (Well, the actual command is this: alsasrc ! audioconvert ! audioresample ! vader name=vad auto-threshold=true ...
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2answers
382 views

Alsa/PulseAudio mixing output from multiple processes

I wonder is it possible to rig alsa or/and pulseaudio so that audio output to left stereo channel will come form one process and to the right channel from another process?
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106 views

MPD fails to start the next song

I am running Arch Linux (e17) on x86_64; with mpd 0.17.3 and ALSA 10.0.26. One update ~three months ago mpd started acting strange. It would not start playing the next song, and it would appear as if ...