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

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1
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4answers
445 views

Consistent (physical) volume on set of files (volume normalization)

If I have, say, 20 music videos (.flv and .mp4), is there a way to play them in mplayer (mplayer2) without having to change the volume for each video, instead specifying a desired general volume, and ...
2
votes
2answers
161 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 ...
1
vote
0answers
321 views

Sound doesn't work in x, but does in virtual terminal

I've just installed Fedora 19, bringing over my home directory. I've disabled graphical boot, instead I get dumped to a virtual terminal. I use xmonad instead of gnome3. weird phenomenon #1 In a ...
1
vote
1answer
257 views

Java application locks up after playing sound

Our Java application plays short notification sounds periodically (in response to user actions). On some hardward, our application will lock up after the 3rd or 4th short sound. We have to pkill java ...
2
votes
1answer
2k views

how to pipe audio output to mic input

I've looked all over the internet for a clean way to reroute the audio output of my computer (i.e. what I'd hear from the speaker) to my microphone's input. Possibly, I'd like to do this at low level ...
3
votes
2answers
925 views

Stereo “tone-generator” for linux?

Is there something like a stereo (separate left-and right-channel) tone-generator for Linux? Where you can set volume and tone/pitch for each channel, and preferably also set the wave-form (sine, ...
3
votes
1answer
385 views

How can I find the correct name for my microphone and sound output using aplay or pacmd or something else, to apply in asound.conf?

I need to write a default mic and default speaker output in the asound.conf config file. But I don't know exactly how I can find my external sound card or microphone device's name, so that on reboot ...
0
votes
0answers
187 views

Jitsi crashes sound every time

No matter which version of the software I download and install from jitsi.org, running Jitsi causes the sound on my OpenSUSE 12.3 machine to be replaced by a low hissing noise. This persists even if I ...
1
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0answers
65 views

Xubuntu Media plays at triple+ speed

Out of the blue today, I just booted my PC and Raspberry Pi like normal, with my PC running Xubuntu and my RPI running Raspbian, and on my PC at least ALL media is running at triple or higher speed. ...
1
vote
1answer
79 views

Mute sound from specific virtual display

I'm using Linux, precisely Mint 13 Maya, which is based on Ubuntu Precise. I was wondering if there was any way to mute sound coming from other virtual displays, or to only have sound playing from ...
8
votes
3answers
3k views

End sox recording once silence is detected

I'm writing a script that uses sox to record me talking. Now I need sox to wait until it detects sound before it begins recording, and I do have that figured out. But I also need sox to exit once ...
17
votes
4answers
10k 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 ...
3
votes
1answer
402 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 ...
2
votes
0answers
220 views

How to send HDMI sound to OTHER HDMI port?

I am running XBMC on a Debian Testing system on my HTPC. I want to switch between my monitor for browsing and my tv for XBMC. This is no problem. But the sound only seems to reach my television when ...
5
votes
3answers
1k 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.
3
votes
1answer
232 views

Batch conversion of Module files with XMP

I have the following script to convert a big bunch of .MOD and .XM files into Wave format: #!/bin/bash for f in ./XM.* ./MOD.* do xmp $f -d wav -o - | ffmpeg -i - -acodec libmp3lame -ab 320k ...
1
vote
0answers
441 views

Linux Mint 15 no audio with NVidia MCP51

I updated from Linux Mint 14 to 15 recently, and since then my audio driver seems to be gone or nonfunctional. I don't have a ton of experience with drivers under Linux (grew up a Windows guy), but ...
1
vote
1answer
551 views

Is there a command line tool for analyzing audio frequency

I am planning to analyze audio via linux command line. There are a lot of analyzers out there which have a graphical interface, but since I want to make an automated input/output of this information I ...
1
vote
2answers
117 views

adding additional tracks using sox and the command line

I'm trying to add additional tracks using sox using the command line Example: I have several different stereo tracks a drum track, vocal track, effects track, etc. Can I add additional stereo tracks ...
0
votes
1answer
81 views

Making a Icecast Playlist from the Console

I got HP 6G RAM laptop that use as a home server, and a netbook that i use as my everyday console. I recently installed icecast server on the server as playing audio files on the netbook halts my ...
5
votes
2answers
231 views

Can I query which processes (if any) are currently accessing the microphone?

I'm running Debian (technically Raspbian), trying to get a Star-Trek style voice-command system. I've got it mostly up and running, but in the interests of privacy and all that jazz, I don't want my ...
2
votes
0answers
58 views

VST plugin integration into ALSA?

I have "headless" (e.g. no graphical front-end) VST plugin that I would like to embed into my ALSA setup to continuously filter my sound. I remember that there used to be a LADSPA plugin which itself ...
4
votes
4answers
4k views

My audio device not working

I have been setting up a new CrunchBang Linux and my sound doesn't work. When I type lspci -v command and alplay -l command in command prompt I can see that my sound card is connected and detected. ...
3
votes
1answer
615 views

Pulseaudio, Phonon, KDE and forwarding sound to headset

Some days ago I bought headet (Jabra BT2045) and I want to use it in Skype voicechat and for example to forward to it another sound streams from my KDE. I've successfully paired and setup as headset ...
2
votes
1answer
803 views

asound.conf file is corrupted does not allow the play with the correct sound card as a result it keeps failing

I have this following asound.conf file, but when i play $ speaker-test it fails. How can you tell asound.conf that each and every time on restart of pc also use this sound card only? "card 2: PCH ...
2
votes
0answers
43 views

Configuring Enlightened Sound Daemon

I have a single audio source specified in ALSA as plughw:1,0 (a USB microphone) and I'd like several other processes to be able to access the source simultaneously. For various reasons, each process ...
3
votes
1answer
139 views

Creating multiple devices from one device?

Specifically taking a USB device, which normally allows only one process to open it for reading, and clone/duplicate/replicate it so that multiple processes can open and read the input. Something ...
1
vote
0answers
207 views

Native Instruments Audio Kontrol 1 - crackling sound

I am very new user to the Linux world. I istalled newest Ubuntu on my old ASUS A7CC laptop. I would like to use also my older external sound interface Native Instruments Audio Kontrol 1. I am able to ...
2
votes
1answer
5k views

How do I convert FLAC files to AAC (preferrably VBR 320k+)?

I back my CDs up to FLAC and then transcode to AAC (.m4a) files for portability on my android phone and the wife's iPhone. I had been using XLD on Mac and it does a great job but I'd rather not steal ...
2
votes
2answers
870 views

Playing a remote movie on the remote computer

I have two computers (a desktop and a laptop) running linux connected to my local area network. I like to ssh from my laptop over to my desktop and run programs there, and sometimes listen to music on ...
5
votes
1answer
1k views

Linux newbie: How do I use Jack? How does Linux sound work? [closed]

I am a Linux newbie. I know my way around the command-line enough to where it doesn't get in the way of my day job (I develop web applications in Python). This involves some piping, grep, awk, and ...
0
votes
0answers
439 views

ffmpeg: problems when copying the audio

When I run this ffmpeg -i video.mp4 -codec copy video.avi I get a broken audio: a crackling like a stuck LP. The input-audio is aac When I re-encode the audio like this ffmpeg -i video.mp4 -codec:v:0 ...
0
votes
2answers
439 views

Unexpectedly lost speaker output. Headphone output works fine

Yesterday when I opened my laptop I noticed that I no longer had sound from the built-in speakers. I carefully checked settings in Sound Preferences, and then dropped to shell and looked in ...
1
vote
0answers
26 views

Starting jackd after using other audio

I know this is probably a common question. When I start jackd after first booting, everything works fine. If I use another audio (such as Banshee or Youtube, etc) jack won't start. From what I ...
1
vote
1answer
210 views

sox segmentation fault

My attempt to record sound with sox on Raspberry PI fails: pi@raspberrypi ~/tmp $ rec new.wav Segmentation fault And so does play: pi@raspberrypi ~/tmp $ play test.wav Segmentation fault Yet it ...
1
vote
0answers
179 views

VLC - gapless cue support

Most of my music is ripped flac's with cue's. I listen to albums with cue mainly because of last.fm scrobbling, but I want the same experience of gapless playback as listening to whole flac using VLC ...
1
vote
0answers
136 views

Choppy sound with flashpayer

After a number of updates, including upgrading to flashplayer 11 and kernel 3.8.2 sound from flashplayer and skype has become choppy. Setup In my setup I have .ascoundrc set up to use pulseaudio ...
3
votes
3answers
368 views

No Audio Output with X11

I have a queer issue with my Arch-Linux System. I am unable to get any Sound Output when playing audio, AFTER starting X Server. The issue is not with Volume Controls or Sound Card Drivers because, ...
1
vote
0answers
387 views

How to make CD-quality WAV files using avconv?

I want to make a CD using the audio tracks of some video clips. I was thinking of using avconv to convert the files. As far as the other steps go, I found some instructions on the Arch Wiki. This is ...
1
vote
1answer
198 views

Backtrack mp3 problem

I've installed Backtrack but I can't figure out how to play mp3files. I've installed ubuntu-restricted-extras,lame, libmp3lame but still won't work(I have Rhythmbox player, I've also tried Amarok). ...
1
vote
0answers
112 views

Sound messed up in Starcraft. What's the deal?

I'm trying to run Starcraft through Wine. The sound is all distorted, as if it were playing underwater. Then, about 10 minutes into the game the sound is perfect for 1-2 seconds. Then, there's no ...
3
votes
0answers
83 views

Allow audio from only one application

I'd like to only allow audio from a certain application. That is, I'd like to have audio turned off by default for new programs. I'm aware that in PulseAudio one can mute programs, but the problem ...
1
vote
4answers
5k views

Updated Fedora 18 - no sound devices, just dummy output

So, yesterday I updated the recently released Fedora 18, this has been done: Packages Altered: Updated grubby-8.20-1.fc18.x86_64 @?fedora Update 8.22-1.fc18.x86_64 ...
2
votes
0answers
178 views

How to configure buildroot to add a sound device?

I've used a given board configuration to reconfigure it for my individual board. My board has a CS4270 sound device of Cirrus Logic. My uImage is booting successfully on my target hardware, but an ...
1
vote
1answer
222 views

Pulseaudio rapidly switches ouputs at high volumes

I'm using Pulseaudio. The image is of the Output Devices tab and shows the Port set to Analog Output. This is fine and works great. There's another option called Headphones but if you try and set the ...
3
votes
1answer
254 views

Playing sound in a user X session

I am running Linux Mint 14 and can play sound when I start my x session through mdm. however, when I start my X session using startx in user space, I am unable to get any sound play. What could be ...
22
votes
3answers
21k views

Set volume from terminal

Is it possible to set the audio volume using the terminal?, instead of clicking the speaker icon in the topbar, the reason I want need to do this is because my keyboard does not have a volume ...
3
votes
3answers
2k views

Speakers make popping sound when on battery power. What should I do?

I am running Linux Mint 11 on my notebook, which is basically a variation of Ubuntu. I have been hearing a popping noise in the speakers ever since I installed the OS, but just now realizing that the ...
1
vote
0answers
197 views

How to setup an audio/sound output monitor/listener?

I am working with an Arduino and am trying to get it to respond to sound when it is played on my computer. I'm communicating with it over a serial port. I need to know if there are any audio/sound ...
5
votes
1answer
534 views

ALSA dummy device - how to configure?

I am working on an audio stream between two virtual servers. For that, I have set up a dummy soundcard (as the vservers don't have a hw card) using modprobe snd-dummy. That seems to work fine - I am ...