ALSA (Advanced Linux Sound Architecture ) is an API of audio functions for the linux platform.
2
votes
1answer
174 views
Renaming alsa controls
Is it possible to rename alsa controls?
My front panel is controlled using "Speaker" and my the back plugs are "PCM". Since this isn't very descriptive I would like to rename them to something more ...
6
votes
1answer
3k views
How to check why sound over HDMI doesn't work
I installed Gentoo clean on my system, except my /home but I deleted all hidden folders that might have an impact on sound (.mplayer .pulse* .config .esd_auth and more) and with a fresh user adduser ...
2
votes
1answer
236 views
Getting more details in ALSA volume
I've bought some new speakers, and they play much louder than my old ones. It's so much that I most of the time keep them at 1% to 3% in alsamixer, which is -103dB to -84dB.
This obviously leaves ...
9
votes
3answers
5k views
Generating random noise for fun in /dev/snd/
Recently I have been exploring the enchanted /dev folder. I want to write some random data to an audio device in order to generate some noise.
I am using ALSA.
So I instruct cat to pipe some random ...
2
votes
1answer
687 views
Recording audio output
I've been following these instructions for recording the output of a program I wrote (that uses rtaudio to synthesize music) ...
0
votes
0answers
613 views
How to make front audio jack work again after waking up from suspend?
Sometimes, after I wake up from suspend (using pm-suspend), the front audio jack stops working (no sound) after I wake up my laptop. Only after a full reboot I get it to work again.
My laptop is an ...
1
vote
0answers
353 views
Why is this ALSA configuration file preventing aplay and arecord from listing PCM devices?
In my embedded system I have this configuration file in /etc/asound.conf:
pcm_slave.sl2 {
pcm "hw:0,0"
rate 48000
channels 2
format S16_LE
}
pcm.rate_convert {
...
4
votes
1answer
392 views
How to get Debian's volume control working with Pulse
I finally configured Pulse to work with every application, however using the volume control on my keyboard still controls the default ALSA selected device. How do I change it so it adjusts the current ...
5
votes
1answer
5k views
How to use command line to change volume?
I am trying to control the volume using my programming script. How can I do the following in Fedora 15, Ubuntu linux?
Mute/ Unmute
Volume up and volume down
Note: Please note that I use a web USB ...
5
votes
1answer
886 views
Changing default audio device in Pulseaudio
I would like to use HDMI on my graphic card for audio output. ALSA shows it as a card with 4 devices and I can get sound through one of them (the other three are different channels, perhaps? I have ...
1
vote
1answer
217 views
Easy way to use hardware mixing?
My sound card supports hardware mixing. What's the easiest way to use this feature (rather than on an app-by-app basis, hopefully)?
2
votes
1answer
330 views
Sometimes no sound in flash videos after boot?
Sometimes after I boot up the machine, I get no sound in flash videos. First I didn't know why it was happening, but as I read a few articles here and there, I found out it was because of my USB ...
1
vote
0answers
304 views
alsa and 5.1 surround through three front stereo jacks on the Dell Studio XPS 13
I know this is not a tech support forum, but I am not etting an answer from alsa people and have tried much, if not everything.
I can upload the alsa-info output if needed, but here is the info ...
1
vote
2answers
2k views
“lsmod |grep audio” doesn't return anything?
I am running Debian Squeeze. I installed and removed Gnome3 and reinstalled Gnome2.x (epic fail and stupidity) and in the process I have lost audio, lspci returns following
# lspci | grep Audio
...
3
votes
1answer
965 views
5.1 speakers on soundblaster x-fi 'extreme audio'
The rear and center channels on my 5.1 speakers don't work.
I've checked the connections a few time, and turned up volume sliders in alsamixer
“System information” in alsamixer correctly identifies ...
5
votes
2answers
645 views
Microphone always picks up sound and routes it to speakers
I've started running into a kind of strange problem on my laptop, and Google hasn't proved to be very helpful so far.
Essentially, at seemingly random times, my microphone will start sending output ...
2
votes
1answer
892 views
Trying to improve sound quality with ALSA
I'm trying to make ALSA 1.0.23 to use different resampling algorithm. I did some research on the Internet and found that putting the line defaults.pcm.rate_converter "<library>" into either ...
