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

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2
votes
1answer
2k views

Using FFMPEG to stream to Twitch.tv with desktop audio?

I've been trying for the last hour or so to stream to Twitch.tv with desktop audio in the stream. Currently, I'm able to use this to get a video to display on Twitch: #! /bin/bash INRES="1280x800" ...
4
votes
0answers
95 views

Auto-switching PulseAudio profiles based on input(s) channel count

I'm running audio over HDMI to my receiver, which has a full 7.1 setup connected to it. However, most of the stuff that I listen to has far fewer channels—some is mono, most is stereo, a bit is 5.1. ...
0
votes
1answer
175 views

KDE: temporarily changing sound system

A little time ago, I reported a bug related to Phonon/pulseaudio. For debugging purposes I was told to disable pulseaudio so phonon can use the hardware directly. So I searched about how to disable ...
0
votes
1answer
2k views

Unable to control audio volume in BackTrack5 R2

I have Backtrack5 R2, one of the several problems I have is the audio works but I cannot control the volume, it is always the same and it's very annoying. What can I do to fix this?
2
votes
1answer
454 views

Disable ATI HDMI sound device - Fedora with PulseAudio

I want to disable the ATI HDMI sound device. I have nothing connected to it and for some reason, although it isn't the default sound device, it sometimes kicks in and grabs my sound, leaving the ...
0
votes
1answer
83 views

Unwanted 32 bits audio sample type with default codecs

I'm running a fresh Debian sid / KDE with Pulseaudio and the VLC/Phonon backend (default). When I play a (16 bits) mp3 file with most of my players (VLC/cVLC, SMplayer, Juk, etc), the Pulseaudio ...
1
vote
1answer
272 views

motherboard beep

I need help. I am using a Debian machine, ARK-3360F, and I need to make it beep like it does when it starts-up. Unfortunately, there is not any other speaker than this on the machine, so the below ...
2
votes
1answer
2k views

Live noise cancellation of microphone audio with JACK, ALSA, Audacity?

Audacity has a very nice noise cancellation filter. Is it possible, using JACK with ALSA, to pipe live audio through Audacity's noise cancellation filter?
0
votes
0answers
26 views

avconv with negative audio quality value

Is it possible to set the -q:a parameter to a negative value? For example, the value of -1 is a valid quality level for the Vorbis codec.
5
votes
3answers
2k views

Command line audio player that exits immediately after file finished playing back?

I am experimenting with audio players in the command line, and noticed something weird: if the sound is very short, most players will take up to a second or two after playback has finished, before ...
2
votes
0answers
1k views

CentOS 6.5 sound permissions

I am trying to configure ALSA for a CentOS 6.5 minimal install, my problem is non-root users do not have permission to access the sound devices in /dev/snd because the files are missing access control ...
1
vote
1answer
142 views

why has /dev/dsp vanished from SUSE

I used to test my sound settings with the command dd if=/dev/urandom of=/dev/dsp This will play random sound over your default sound device (using OSS). I am using SUSE Linux. Now in the newer ...
3
votes
2answers
1k views

Where can I find the Linux driver for headphones in the kernel tree?

I have headphones with three buttons on them which allow me to control my music player with my phone. I want to write a driver for my headphones to make it control my music player on my pc (Ubuntu ...
0
votes
0answers
470 views

No sound in Ubuntu minimal + xbmc. Possible bug?

I'm running Ubuntu 12.04 minimal+XBMC with no gnome interface. lspci | grep -i audio 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03) aplay -l **** List of ...
5
votes
1answer
328 views

How do I get sound to work outside lightdm

If for whatever reason I sudo stop lightdm running on mint and just use a simple xinit session with mutter, is there some way I can get sound to work? Whenever I do that, it seems there's no sound.
1
vote
1answer
58 views

WMA conversion for playitslowly

I need to transcribe some audio files. The original format is .WMA. I've tried using both: ffmpeg -i some.WMA some.wav and pacpl -to wav some.WMA some.wav as well as exporting with Audacity ...
0
votes
0answers
48 views

How to set gstreamer backend to JACK

How do I set the gstreamer backend for versions 0.10 as well as 1.0 to JACK instead of pulse (or the autoaudiosink). I have tried the gstreamer-properties method, however that has failed for me.
15
votes
3answers
7k views

Change PulseAudio Input/Output from Shell?

I have a set of nice wireless headphones which I use from time to time, in addition to my speakers and normal microphone. I'd like to write a script to switch between one input and output source and ...
1
vote
0answers
64 views

Two “Audio codecs” have 100% power usage in PowerTOP - what does this mean?

Should I be worried? My battery power doesn't last long (~1hr), could this be the reason? How can I fix this (if it has to be fixed at all)?
3
votes
1answer
1k views

How do I resolve the garbled sound in Debian?

I just recently installed Debian 7 Wheezy with KDE and once I turn on the computer, the start-up sound is garbled. The closest description I can think of is that the sound coming out is somehow ...
0
votes
0answers
40 views

LMMS instruments don't play full notes

Here is an image of the piano01.ogg instrument in LMMS. As you can see by the wave graph, holding down the key will play a nice note that starts out loud and smoothly decreases in volume. ...
0
votes
1answer
88 views

Audiowerk 8 drivers for Linux

Does a driver exist for the old Audiowerk 8 sound card from now defunct Emagic? I have a system running Ubuntu 13.10 and would like to utilize one of these old sound cards.
2
votes
1answer
624 views

How to disable a usb sound device with udev

How can I disable USB device by Vendor ID? So I have: [root@piotr ~]# lsusb Bus 001 Device 002: ID 058f:9254 Alcor Micro Corp. Hub Bus 001 Device 003: ID 0d8c:000c C-Media Electronics, Inc. Audio ...
2
votes
1answer
130 views

Every few minutes sound is reset

I'm running Debian testing and I have a script that sets the volume of speakers on startup that looks like this: amixer -c 0 set Surround 50% > /dev/null & amixer -c 0 set Center 100% > ...
0
votes
0answers
329 views

How do I make Wheezy see my sound card?

I'm working on a relatively clean install of Wheezy - relatively as I installed it today and have been installing packages for quite some time. I previously had Ubuntu which played sounds, so it's not ...
3
votes
3answers
5k views

amixer - How to change recording channel?

So fat, I am setting up microphone settings : $ amixer set 'Rear Mic' 90% mute cap $ amixer set 'Rear Mic Boost' 80% But, after some sys. update, my default recoding chanell changed to 'Front Mic' ...
1
vote
1answer
308 views

How to handle live audio input, process, and redirect to audio output

I'm wondering how I can get audio input from a jack, process it sample by sample, then send the processed sample to an audio output jack. My plan is to run this on a raspberry pi with a USB soundcard ...
2
votes
2answers
147 views

Library for audio effects and modulation?

I'm building a site which will have multiple audio lectures uploaded, as it's mainly a feed for a certain person's lectures. What's annoying is that there are many things which can go wrong during ...
2
votes
3answers
424 views

Fastest way to convert a large amount of FLACs to MP3s

I'm looking for something that can take advantage of my GPU or at the very least, multiple cores of my CPU to convert a few terabytes of FLAC to mp3 (VBR v0) very quickly while preserving all of the ...
2
votes
1answer
987 views

No sound on Debian VM

I installed Debian+XFCE using VMware and this YouTube video. Everything runs OK, but I have no sound in the VM. What's wrong?
2
votes
0answers
166 views

Lock all devices when adjusting pulseaudio volume in kmix

My problem is that kmix adjusts the volumes of not all devices locked together. Adjusting built-in analog stereo also adjusts application's equalized stream and ALSA plugin. But webcam and event ...
2
votes
1answer
3k views

How to troubleshoot No Sound on CentOS 6.4 w/ USB headset?

Have a new Dell machine with a fresh install of CentOS 6.4. I have a headset hooked up via USB, but no sound. I'm not sure CentOS is recognizing my sound card -- or maybe it's not recognizing the ...
3
votes
1answer
1k views

Get the current volume level in OS X Terminal CLI?

I would like to check the current volume level from the CLI on my Mac. I know I can set it like this: osascript -e 'set volume <N>' But that doesn't seem to work when trying to get the ...
2
votes
0answers
296 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. ...
1
vote
0answers
47 views

Headset not working in OpenSUSE

When I plugin my headset into my computer, running OpenSUSE, I do not get any audio. The regular speakers work fine. The reason this is happening, I think, is because it still tries to output through ...
0
votes
0answers
974 views

headphone/Microphone is not workingLinux mint 15

I was using windows and my headphone and speaker was working fine there. Recently I moved to linux mint and having problem to get sound on headphone. Speaker still working fine. I have tried several ...
3
votes
3answers
2k views

Sound Problems with pulseaudio

The overall question that my whole problem is kind of based on is regarding sound in linux. Should I be using alsa or pulse or what? I'm using pulse at the moment and this is my problem: I was in the ...
2
votes
1answer
567 views

timidity: No instrument mapped to tone bank 0, no idea which one is missing

I am trying to play this midi file downloaded from here, but I get: $ timidity --verbose marivonnig1\ \(1\).mid Requested buffer size 32768, fragment size 8192 ALSA pcm 'default' set buffer size ...
0
votes
1answer
79 views

No sound since I first pressed “mute” on my keyboard

I have a problem with sound. I once pressed the mute button on my keyboard and since then I couldn't do anything to get the sound back on my headphones (obviously, including pressing mute again). I ...
2
votes
1answer
89 views

How to use OSLEC with Alsa as default, not with Pulseaudio or other thirdparty package involved?

Oslec Echo canceller I have seen some packages used OSLEC and there echo cancle was very well. So for a test simulation, how could i install the OSLEC only with Alsa (i do not use PulseAudio at all, ...
1
vote
1answer
556 views

How to turn off internal laptop speakers when external speakers / headphones are connected in Elementary OS?

In the eOS settings I see no option to make internal speakers turn off when the external jack is connected.
4
votes
3answers
1k views

Extract audio from video in Linux with a GUI program?

When I use Thunar I like adding to custom actions command lines like those presented here, here and here to extract audio from videos. I mean without transcoding/altering the sound, just putting it ...
1
vote
0answers
115 views

Switching output sink/moving audio streams - but some apps still use the old sink!

I'd like to easily switch between a usb-connected amplifier/dac and my onboard audio. I'm using a fully updated Arch Linux x64 with PulseAudio 4.0-2. Another thread on this board is about switching ...
2
votes
1answer
942 views

Disable Cinnamon volume applet's sound when changing volume

I recently updated my Linux Mint Debian Edition to update pack 7. Since then, every time I change the volume by scrolling on the volume applet that is on my panel, an annoying beep is played. Similar ...
3
votes
1answer
256 views

How can I disable the shutter sound of gnome-screenshot?

After a recent update of my LMDE, the gnome-screenshot tool started making an annoying camera shutter noise every time a screenshot is taken. This is both annoying and startling (especially if you ...
2
votes
1answer
1k views

convert arecord output to flac

I'm trying to convert arecord wav output to flac and it does work in part: pi@raspberrypi /tmp $ arecord -d4 -f dat -t wav -r 48000 -c 2 |flac -f -o message.flac - --channels=1 --sample-rate=16000 ...
1
vote
0answers
82 views

Reassigning input connectors for HDA ATI SB (Intel HDA / Realtek ALC883) soundcard

My soundcard has three input connectors at the back: green, orange and black. Usually I have them connected with my front, read and subwoofer speakers. Sometimes though I want to reassign them to be ...
5
votes
1answer
248 views

Using OGG/Vorbis, is there a way to continue to record to an existing audio file?

I am using Vorbis/ogg to record audio (using arecord and then pipping to oggenc). I have downloaded oggvideotools, which gave me oggCat, which will let me join two previously recorded audio files into ...
0
votes
1answer
446 views

Alsaaudio module, recording for specific amount of time

The below code records the audio for some time (I don't know how much) How to calculate the total time of its recording? For example, if I want to record for just one minute then how would I limit ...
1
vote
1answer
728 views

audio recording - record two sources simultaneously, merge into a single 2-track recording

How can I record two audio sources at the same time and create a file where one source is the left channel and the other source is the right channel of a lossless stereo audio recording? My distro ...