Questions about audio hardware and software in Linux and other UNIX operating systems.

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1answer
1k views

What app can I use to change sound levels in GNOME 3 (fallback)?

With GNOME 2, I use my the volume control applet to change loudness levels. It doesn't load on GNOME 3 (fallback) applet, so I wonder what other UI can I use for this, preferably a GNOME one.
6
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3answers
20k views

How do I display the name of my audio card driver from the command line in Lubuntu 11.10?

I am running Lubuntu 11.10 and I want to display my Audio / Sound Card Driver from the command line.
0
votes
1answer
1k views

G722 in gstreamer is not available or its need to be activated? How do i do that?

Gstreamer how to use G.722 enc and dec? Is this not available or missing in there implementation? $ gst-inspect | grep ffmpeg ffmpeg: ffaudioresample: FFMPEG Audio resampling element ffmpeg: ...
1
vote
1answer
520 views

How to demux audio and know what type it is?

How to demuxed audio and know what type it is? When muxing an audio into a video, ffmpeg, mencoder, etc require to know what the audio's encoding is. The encoder typically uses the file name's ...
2
votes
1answer
193 views

How do I run Gnome 3 sound control from KDE?

Skype is using pulse audio, which is part of Gnome and the main place I found to configure microphones was in the standard Gnome sound control. How can I configure the microphones from KDE?
2
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0answers
212 views

Music Server for WLAN-Speakers [closed]

There are several systems with WLAN-Speakers for sale. Most of them consist of several Boxes with WLAN-Recievers and a WLAN-Router/Storage-Device to spread the sound information. The WLAN-Speakers ...
0
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1answer
127 views

Applying an IO redirection&audio device example in Fedora

Here is an example I saw in a webpage which uses IO redirection to make the audio device make sound. less sound.wav > /dev/audio But I cannot do it in Fedora. It outputs the input data format is ...
2
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1answer
351 views

Extract pitch information from audio file

Is there a command-line utility which would allow me to extract pitch information from an audio file and store it in a numerical form (i.e. as a list of comma-separated values)?
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0answers
1k 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 ...
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0answers
790 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 { ...
3
votes
2answers
1k views

Is there a linux distro that uses Jack audio server all the time?

By this I mean a distro that does not use pulse audio at all. So when you are runing programs like miro or mumbles you do not lose audio playback becuase Jack took over the audio stack.
3
votes
1answer
1k views

How to remotely turn “up” sounds?

So I have to Skype with someone, but he is not...well let's just say not a "geek", so I have to log in via SSH to his Fedora machine, and turn on sound [because he can't hear me when using Skype, but ...
2
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1answer
179 views

How can the log-in screen sound of linux mint 11 be changed?

How can I customize the sound that occurs when the log-in screen pops up on linux mint 11?
4
votes
1answer
892 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 ...
4
votes
1answer
689 views

Why is vlc not syncing audio and video correctly?

max@linux-vwzy:~> vlc --version VLC media player 1.1.11 The Luggage (revision exported) VLC version 1.1.11 The Luggage (exported) Compiled by abuild on messiah (Aug 17 2011 15:23:16) Compiler: gcc ...
2
votes
1answer
2k views

How to turn microphone jack to headphones jack?

I've picked out my headphones jack. Can i change my microphone jack to headphones jack only by soundsystem configuration? My soundcard is Intel82801I (ICH9 Family) HD.
6
votes
2answers
1k views

Automatic Volume settings?

When I watch a Movie on my Desktop PC - Fedora 14 - In many times the Movie is too quiet to hear, but sometimes....it's too loud - Because there's suddenly music, or an explosion, that's really ...
11
votes
2answers
5k views

How to record my full screen with audio?

If I want to record my desktop, I use: ffmpeg -f x11grab -s `xdpyinfo | grep -i dimensions: | sed 's/[^0-9]*pixels.*(.*).*//' | sed 's/[^0-9x]*//'` -r 25 -i :0.0 -sameq valami.avi But it doesn't ...
4
votes
2answers
7k views

Flash using wrong audio output with Pulseaudio

I'm using Arch Linux x86_64 with Gnome and PulseAudio. I have USB speakers, which work for the sounds in system menus and most other applications. But whenever I play Flash videos, they output their ...
4
votes
1answer
291 views

Audio frequency spectrum of a video at a given time

Is there a simple way to get the audio frequency spectrum at a given time of a video? My motivation is the following: I was wondering if it is possible to "measure" the Doppler shift from YouTube ...
2
votes
1answer
6k views

Play RTMP stream from command-line

I've managed to get flvstreamer to read a radio station's RTMP stream with the options --live -r [url], and it outputs what I guess is the raw audio data + stream info to stdout. Can I make it play ...
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2answers
834 views

How to disable system beep for non-privileged user

How to disable system beep on Linux? I don't have superuser powers so I cannot recompile kernel/unload module.
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1answer
3k views

Fedora 15 - Audio Configuration

I have a Macbook Pro 6,1 that I have dual booting OSX and now Fedora 15. I'm working on getting the audio working. In System Settings > Sound > Output there are two options for audio devices: High ...
1
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1answer
78 views

Shift every mode by a constant factor of an audio signal

Is there any tool for linux which can shift every frequency of the spectrum of a sound signal by a constant factor and output the resulting sound? Especially I am looking for a way to simulate the ...
5
votes
2answers
367 views

Is it possible to record audio directly to a computer's optical drive?

There's a question over at audio.SE at the moment and I thought it may attract some answers here. I asked the user and he's happy to have it posted here to see if anyone has some ideas. Here it is ...
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1answer
992 views

MP3 to Audio converter under Fedora

I have a folder that has ~10 mp3 files. How can I convert them to "Audio format"? - I have an older CD player that doesn't handles MP3 files, only "Audio".... I need a simple, GUI app for it (extra ...
8
votes
1answer
2k 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 ...
2
votes
1answer
1k views

I don't have a /dev/dsa yet I have audio!

I was hacking around and hoping to direct some random data using pipes at /dev/dsa as follows cat random.file > /dev/dsa ...to get some random noise, but I can't manage to find an audio ...
1
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1answer
225 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
403 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 ...
2
votes
0answers
313 views

Mouse click sound on fedora

I have a USB touch screen system with Fedora 14 installed. I couldn't get to play sound on any mouse click (on touch). Is there anyway to play a click sound, either by changing some configuration or ...
2
votes
2answers
5k 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
1k 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 ...
4
votes
0answers
972 views

No sound in webex player in wine

I am using Fedora Core 10. I have installed wine with both wine-alsa and wine-oss sound drivers. I am able to hear test sounds by running winecfg, but when I run the webex player there is no sound, ...
1
vote
1answer
1k views

Reading audio stream data from internet radio and pushing it to temporary file

I'm in the process of setting up an audio processor on my remotely hosted CentOS box. The audio processor itself is command line based, and after speaking with the author he explained to me that it ...
3
votes
1answer
516 views

Ubuntu 10.0 sound muted automatically on ThinkPad

My laptop is ThinkPad T61, with Ubuntu 10.10 installed. The sound works all well, until I plugged the Creative XiFi Go USB sound card. After I reboot my computer, the internal speaker is muted ...
2
votes
1answer
4k views

ffmpeg and libmp3lame produces bad audio quality?

when I get a flash video from YouTube, why is the quality of the audio much worse than the origin video on YouTube? When I downloaded the flash movie, I convert it to avi like this: ffmpeg -i ...
3
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2answers
2k views
0
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1answer
711 views

Do the “play” utility in Linux really have a “delay” to stop it's process with really small files?

I have a wav file, Duration: 00:00:00.17 (less than a second!) When I call play to execute it, play executes it fine, but my terminal becomes idle for ~4s until play process is done. Is this by ...
2
votes
2answers
643 views

Flash running in Chromium and FF at once, why no sound in the second browser?

I work as a student assistant Linux admin and I just packaged up Adobe's "Square" plugin to get 64bit FF running flash pretty well (first time I've seen it work this well), but there's one little ...
1
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2answers
283 views

How come I suddenly don't have any audio?

Just a few minutes ago my sound was working, and then it stopped! I suspect it was caused by me checking out some video editors. How do I go about troubleshooting this? What I've so far tried: I ...
1
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2answers
116 views

Is there a tool that lets me exaggerate audio levels?

It often happens that a movie I'm watching has audio loudness levels set too low. Since I use a typical laptop, I can't just go raise the volume level of my speakers. I've raised all knobs offered by ...
6
votes
2answers
1k 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 ...
7
votes
1answer
461 views

Prevent mplayer from changing system volume

When I change the volume in mplayer it also changes for other applications. How can I configure mplayer to only change its own volume? Or is this a problem with the rest of the audio stack? I am using ...
1
vote
1answer
254 views

No sound from cli apps or from zsnes

Some programs don't have sound, in particular ZSNES and anything I run from the command line. So my question has two parts: How can I diagnose this problem? (I'm thinking of a command like lspci ...
1
vote
1answer
124 views

Sending music directly from MIC to LS

How can I tell linux to send directly from my microphone to my loudspeaker?
1
vote
1answer
1k views

Sound card not found anymore

I started my ubuntu today and Audio card was not working. Card is not even listed with lshw. No device with description like physical id: 1b (I remember the old device settings). Any ideas?
4
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2answers
463 views

Audio recording does not work — how to diagnose?

I used KRec to record some audio, but when I played it back I got nothing. What are the things I need to do to figure out where the problem is? My computer is a Dell OptiPlex DX620, Intel Pentium 4 ...