Questions about audio hardware and software in Linux and other UNIX operating systems.
2
votes
1answer
693 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) ...
1
vote
1answer
271 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
0answers
3k views
No sound with Mint 12 and Realtek ALC892
Installed Mint 11 last week and I've got no sound. I've read around, went through the trouble shooters. Poked and prodded. Still no sound. It worked right out of the install with this hard ware in ...
2
votes
1answer
151 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
votes
0answers
152 views
Music Server for WLAN-Speakers
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
votes
1answer
101 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
votes
1answer
180 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)?
0
votes
0answers
616 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 ...
3
votes
3answers
2k views
What and how is the encoding of a raw (headerless) audio file?
I have done this:
me@riverbrain:~/sgf$ echo "test" | text2wave -otype raw -F 16000 >> test.raw
which produced a headerless audio file. The wonderful thing about this file is that it can be ...
6
votes
2answers
761 views
Volume up/down function keys limited to gnome-volume-control “Unamplified 100%” level
Using GUI gnome-volume-control:
Sound Preferences
----------------------------------------------------------------------------
Output Volume: [--------------+ ]
...
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 {
...
2
votes
2answers
488 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.
5
votes
2answers
886 views
How can I create a direct 8khz audio pipe in Ubuntu?
I'm interested in creating musical programs like these:
http://www.youtube.com/watch?v=GtQdIYUtAHg&feature=player_embedded
Essentially these programs just generate sequences of integers, which ...
2
votes
1answer
516 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 ...
1
vote
0answers
299 views
VLC surround to stereo problem
I noticed a problem with certain video files where speech volume component is just too low. I googled a bit and it seems that the problem is that it tries to play surround sound on stereo speakers and ...
2
votes
1answer
166 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?
3
votes
1answer
246 views
Audio file as an audio input device
I want to play an audio file over VoIP in order that people can listen to it with a phone call. One way to do this would be to set up the audio file as an audio device where the audio starts playing ...
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 ...
3
votes
1answer
561 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
1k 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.
5
votes
2answers
381 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 ...
0
votes
0answers
451 views
Newly installed Debian Squeeze doesn't have sound [closed]
I have pulseaudio installed,.but no sound on a newly installed Debian Squeeze.
Kindly throw some light.
10
votes
2answers
3k 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 ...
3
votes
2answers
3k 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
456 views
Output sound by writing to /dev/dsp
I know that it is possible to write arbitrary data into /dev/dsp and a noise will come up from the speakers. But whatever data I pass to this file the noise is the same. I wonder is it possible to ...
4
votes
1answer
186 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 ...
1
vote
1answer
2k 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 ...
6
votes
2answers
473 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.
4
votes
1answer
718 views
Mathematica makes no sound under Ubuntu 11.04
After waiting for days for my license I now got the opportunity to install Wolfram Mathematica 8 at home. However, neither the Play nor the Speak functions are doing anything as it seems that ...
1
vote
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
vote
1answer
72 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
207 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 ...
-1
votes
1answer
545 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 ...
5
votes
1answer
888 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
681 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 ...
5
votes
1answer
2k views
Sound input issue with skype, selecting a microphone?
Ok, Skype yet again has issues with sound. This time, it is unable to record audio. The system is using PulseAudio and I am using a web cam as a microphone. Actually, I tried another web cam and ...
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
0answers
216 views
System beep not working in TigerVNC
I just upgraded my Gentoo Linux computer (where I'm running Xvnc from TigerVNC 1.0.90 (1.1 beta 1) compiled myself against xorg-server 1.9.5), and I'm no longer getting any bell sounds, just silence. ...
2
votes
0answers
192 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 ...
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
...
0
votes
0answers
375 views
Ubuntu no sound [closed]
I just installed Ubuntu 10.10 and I've no sound. I tried few method suggested in ubuntu forums like reinstall alsa but nothing works? My PC is old and my audio card is Realtek's AC'97. Any suggestions ...
3
votes
1answer
966 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 ...
2
votes
0answers
659 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
679 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
388 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 ...
4
votes
3answers
454 views
Is there a good command line tool for converting to and from FLAC audio format?
Ideally, I want to convert from MP3 to FLAC and back. I also need to be able to script this.
12
votes
4answers
6k views
How can I play a sound when script execution is ready?
I am executing every now and then some python scripts which take quite long to execute.
I execute them like this:
$ time python MyScript.py
How can I play a sound as soon as the execution of the ...
