Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the Linux operating system.
0
votes
2answers
51 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 ...
5
votes
1answer
106 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) ...
0
votes
0answers
33 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. ...
1
vote
2answers
25 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 ...
1
vote
1answer
61 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 ...
0
votes
3answers
74 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 ...
1
vote
0answers
130 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 ...
1
vote
1answer
93 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 ...
2
votes
0answers
56 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 ...
0
votes
2answers
44 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 ...
8
votes
1answer
258 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, ...
1
vote
0answers
39 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 ...
1
vote
0answers
14 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 ...
1
vote
0answers
96 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 ...
0
votes
1answer
16 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 ...
0
votes
0answers
49 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 ...
0
votes
1answer
147 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 ...
0
votes
2answers
161 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?
0
votes
0answers
44 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 ...
0
votes
0answers
183 views
Getting Logitech USB headset to work on Debian
I am attempting to get a Logitech USB headset to work on my Debian Squeeze computer. However, no matter what I do, there is no sound. I've already tried everything I could find on Google with no luck.
...
0
votes
1answer
53 views
weird alsa problems losing permissions when I plug/unplug usb headset
I have a /etc/udev/rules.d/00-local.rules
KERNEL=="pcmC[D0-9cp]*", ACTION=="add", PROGRAM="/bin/sh -c 'K=%k; K=$${K#pcmC}; K=$${K%%D*}; echo defaults.ctl.card $$K > /etc/asound.conf; echo ...
0
votes
0answers
124 views
HDA Intel: Front Mic boost gets enabled whenever I try to make a Skype call?
I got a problem using my microphone on Skype, I googl'd around a bit and found a solution that seemed to work but the sound gets messed up when calling someone on skype.
The solution I've tried is ...
0
votes
1answer
124 views
Getting an ALSA program (ChucK) to work with Pulseaudio?
Moving a previous answer to this topic; formulated as a question, it would be:
I'm using ChucK, in particular chuck.alsa, to implement a Command line multitrack audio looper for Linux.
...
2
votes
1answer
61 views
Compiling OpenJDK 7 with Arch Linux complains about ALSA
I downloaded icedtea2.3.3 and installed alsa-lib alsa-firmware,
./configure doesn't give any error, but make complains that ALSA 0.9.8 or higher is needed.
Actually, ALSA 1.0.25 is installed.
What ...
1
vote
0answers
112 views
Strange sound behavior
First of all, sorry for the tittle. English isn't my native language, and I can't find a word to describe the strange behavior I'm getting here.
In the most simple explanation, is like sound keeps ...
1
vote
0answers
205 views
Volume control bar available, not functional - Ubuntu 12.04
I am installed mumble because of which I got the package pulseaudio.
The alsamixer was not found anylonger.
I restored back alsamixer using this link. However, I could not restore back the controls ...
1
vote
2answers
170 views
How Video4Linux and ALSA work with Codecs
My understanding is that a codec is both a decoder and a specification for decoding. So some group writes a codec which explains how to decode from their format back into the raw bitstream, and they ...
2
votes
1answer
62 views
V4L2 and ALSA: Kernel SPI or User API?
I'm trying to understand what Video for linux and ALSA are (exactly), and I can't discern whether they're APIs for Linux application to use (the userspace) or if they are backend services that are ...
-1
votes
2answers
623 views
Raspberry Pi sound
I am trying to configure the linux software festival which converts text to voice on a Raspberry Pi.
Before and after the sound is played there is glitch sound that is heard.
Does anyone know what ...
1
vote
1answer
400 views
How to address an alsa “mixer_device” in mpd config for a second sound card?
I run mpd on a system with a built in sound card and a second card that I plugged in via USB.
Adressing the second sound card in the mpd.conf was easy:
change: device "hw:0:0" to device "hw:1"
...
1
vote
0answers
225 views
no sound with an USB Microphone and pulseaudio
I connected my USB Microphone to my Computer, but i cant get it to work.
Pulseaudio recognizes the device, and i can see and edit it with pavucontrol in the Input Devices section. I also can select ...
0
votes
1answer
328 views
ALSA-OSS installed , no dev/dsp found
I'm using Fedora 16 - sound works fine.
I've tried to execute Pocketsphinx for some tests with voice recognition, but it depends on OSS to work. It crashes with the message:
ad_oss.c(103): Failed to ...
2
votes
1answer
256 views
Debian Bluetooth headphones not working [closed]
Hardware
Headphones
Bluetooth dongle
Maybe not exactly these models.
Setup
I tried to follow some guides, here's what I've done so far:
Install software:
sudo apt-get install bluez-utils ...
1
vote
1answer
2k views
How to run OSS dependent application? “/dev/dsp”
I'm using ubuntu 12.04 LTS - sound works fine.
I've tried to execute pocketsphinx for some tests with voice recognition, but it depends on OSS to work.
It crashes with the message:
ad_oss.c(103): ...
2
votes
0answers
151 views
How do I use wine's new multi-channel audio support?
Wine supposedly added Multi-channel support to the ALSA driver in a recent release. However, I haven't found any documentation about it or any reports of anyone successfully using it. I have 5.1 ...
1
vote
1answer
391 views
ALSA does not find sound devices as user but can as root after kernel upgrade
Using Archlinux with x86_64 after kernel upgrade to 3.5.3-1, there is no sound, and ALSA run as user shows no sound devices. The proper kernel modules are loaded, and both dmesg.log and lspci show ...
2
votes
0answers
526 views
AC3 & DTS Output Produces Buzzing/Noise Using a52 ALSA Plugin in Pulseaudio
Note: I hope this is the right site to ask it on, as I'm using ubuntu 12.04 64bit but assumably this is a general linux/alsa configuration question.
I've followed the guide at ...
0
votes
1answer
353 views
List all ALSA devices
I'm using PulseAudio on my system, and I followed the instructions for adding a monitor device as per the PulseAudio wiki. The monitor device itself works and registers/functions properly in apps like ...
1
vote
2answers
406 views
Why can't I play audio from two or more sources?
When I installed on my desktop mpd and mpc, I found that I can't hear other sources (like Amarok, Flash player etc.) at the time when mpc or other client is playing music. If I try to start an audio ...
1
vote
1answer
1k views
How to listen to microphone output on Linux?
I would like to hear the microphone output during Skype calls. I have tried fiddling with alsamixer settings and made sure that the mike is unmuted but still cannot get to hear the mike in either ...
1
vote
0answers
99 views
Amplify alsa capture beyond 100%?
I'm using ALSA. The volume of my mic is so low that even 100% of capture volume is not enough in a skype conversation. Is there any way to amplify the capture volume beyond 100%?
I cannot use ...
0
votes
0answers
116 views
Alsamixer/amixer behavior changed after installing pulseaudio
Alsamixer and amixer were able to control a lot of things, Master, Headphone, PCM, Speaker, etc. After installing pulseaudio, there is only Master in alsamixer, 'Master',0 and 'Capture',0 in amixer.
...
1
vote
1answer
210 views
How to launch a command-line application without having to type the command?
I'm trying to write a python script that will launch alsamixer. alsamixer is a command-line application, that you typically launch by:
Opening up a Terminal.
Typing alsamixer.
I'm trying to make ...
1
vote
1answer
652 views
How to mix S/PDIF input and PCM Out (to hear PCM and S/PDIF simultaneously) in Linux?
In alsamixer I can select either PCM Out or IEC958 In (that's my S/PDIF input) but not both. Is there a solution?
Note: I need stereo sound, so selecting IEC958 In for one channel, and PCM Out for ...
0
votes
0answers
188 views
How can I make Teamspeak work with my soundcard?
I have an issue with teamspeak. The microphone works, but the speakers don't - when I tell teamspeak to test playback, it prints the error "device not registered/known". It does recognize I have ALSA ...
0
votes
2answers
416 views
Debian no lib32asound2-plugins=1.0.25
I compiled git wine 1.5.6 and the sound is not working correctly.
winecfg gives a message:
ALSA lib ../../pulse/pcm_pulse.c:995:(_snd_pcm_pulse_open) Unknown field handle_underrun
...
3
votes
3answers
1k views
Pipe System sound to another computer
i have no speakers in my PC(Cent-OS 5.5) but there is a stereo speaker connected to the computer next to my Computer(Cent-OS 5.5). Both computers are networked. Is there any way to pipe my system ...
3
votes
1answer
4k views
How to disable Auto-Mute Mode?
In alsamixer, there is an option called "Auto-Mute Mode", and it's enabled by default.
But now I want to disable it. I've tried different keys but failed.
Any idea? 0_0
3
votes
1answer
446 views
Change volume from bash
I got this far (from .bashrc):
alias i="amixer -c 0 -- sset Master playback +1dB"
alias d="amixer -c 0 -- sset Master playback -1dB"
alias v4="amixer -c 0 -- sset Master playback 40%"
alias ...
0
votes
0answers
256 views
ALSA - Intel HD Audio (IDT92HD81) Microfone: no capture controls?
I just set Alsa on Debian 6. Playback works fine, but i can't get my mic to work.
Here's some info: http://www.alsa-project.org/db/?f=c4a7d77a2ff986a7b68297a35c486709e828ccbb
Audio codec: IDT92HD81
...
