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

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1answer
699 views

record audio on Linux - capture both sides of a VoIP conversation

I want to use Audacity (or similar) to record audio for podcasting. The podcasts will be interviews conducted via voice-over-IP (SIP) telephone. I came across an excellent tutorial here: ...
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" ...
1
vote
1answer
304 views

Applications grabing ALSA exlusively

So, my second question about linux audio on the site. The previous one generated quite a lot introductory information. I have ALSA and PulseAudio installed. Before installing PulseAudio, no audio ...
2
votes
1answer
324 views

Alsaequal volume gain, Pre-Amp like

I use alsaequal for equalize my audio, hitherto ok, but all know that after equalizer the volume is low, some equalizers have a control called "Pre-AMP" that solve this problem, but in Alsaequal ...
5
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3answers
8k views

How I can record stream radio in Linux?

How can I record a radio stream in Linux like the screamer in Windows? Does anyone have any idea or suggestion?
1
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1answer
423 views

How to preserve the logind session in Arch Linux?

I got audio working in Arch Linux without problems yesterday, but at some point it stopped working again: $ alsamixer cannot open mixer: No such file or directory $ vlc foo.mp4 ... [0x7f1388006be8] ...
5
votes
1answer
413 views

Linux sound: how does it work and why do I need to chain 3 architectures to use JACK?

Linux newbie: How do I use Jack? How does Linux sound work? I have an app that is trying to output sound through ALSA or JACK, but I am not hearing anything. Here are a couple of articles, from ...
1
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0answers
168 views

Cannot find Audio Hardware for my Workstation

Audio is NOT working in HP workstation xw 4600. I cannot find any hardware present at System-> Preferences -> Sound -> Hardware (Tab) The command lspci -v shows following output of Audio ...
10
votes
2answers
6k views

Add album-art cover to mp3/ogg file from command-line in batch mode?

I am looking for a software in Linux, that will add the album-art/cover to each of the selected files in batch-mode. The album art is a jpg/png stored in my computer. It will be awesome if it can ...
0
votes
1answer
225 views

Choppy sound when recording sound from my microphone

I've just installed a fresh copy of Linux Mint 15 and so far everything is working ok, but sound from my mic. While talking on skype or just recording the sound produced is very very choppy. I tried ...
1
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0answers
107 views

No microphone input - VIZIO CT15-A5 and 12.04 LTS (64)

I have the VIZIO CT15-A5 and 12.04 LTS (64) is running smoothly .. Only one issue.. I cannot record sound or use Skype due to lack of mic input. I have tried turning up the sound using the alsa ...
2
votes
0answers
533 views

Linux Mint SPDIF Out Not Working

I'm running Linux Mint 15 (Cinnamon) on a computer with a GA-Z68X-UD3H-B3 motherboard. The only issue that I have had is the sound. The analog outs work fine, but I cannot get any sound from the ...
1
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0answers
113 views

No USB 04b4:0307 microphone input after Ubuntu 10.04

I was very happily using VOIP SIP with Ubuntu 10.04. Since I upgraded to 12.04, not only has Ekiga become very buggy and inconvenient, but, the subject matter of this question: the microphone of my ...
1
vote
0answers
385 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 ...
2
votes
1answer
3k 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
1k 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, ...
0
votes
0answers
220 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
69 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
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1answer
91 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 ...
2
votes
0answers
253 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 ...
2
votes
3answers
425 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
926 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 ...
0
votes
1answer
106 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 ...
1
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2answers
188 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 ...
5
votes
2answers
292 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
64 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 ...
1
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0answers
461 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 ...
2
votes
1answer
1k 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
46 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
193 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 ...
5
votes
4answers
7k 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
200 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 ...
3
votes
2answers
1k 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
2k 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 ...
3
votes
1answer
526 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 ...
1
vote
1answer
350 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 ...
8
votes
2answers
202 views

Single key audio capture in Linux (save on key release)

I'd like to run a program that records audio only when the Right Control key is held down. On keyboard release the result would write to disk as, e.g. yy-mm-dd hh:mm.ogg. How might I do that? $ ...
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 ...
1
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0answers
28 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
4answers
5k views

Change sampling rate in ALSA

I'm a Computer Audiophile, I've used Windows (with ASIO4ALL)and OSX for Audio. Now I'm making Ubuntu 13 my HTPC/Stereo Audio. To begin with I disabled Pulse audio and using GooMusicplayer with ALSA. ...
1
vote
0answers
232 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 ...
1
vote
0answers
245 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
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0answers
157 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 ...
7
votes
1answer
2k views

Sending to two bluetooth speakers at once

Is it possible to send the same audio signal to two different Bluetooth speakers at once from a single source? I remember reading somewhere that it's possible to send audio to two different sinks ...
0
votes
2answers
502 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 ...
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 ...
1
vote
0answers
510 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 ...
2
votes
2answers
472 views

Why does Arch Linux keep Windows headphone mute

I have Windows 7 installed, and headphones work perfectly. Few days ago, I installed Arch Linux along with Win7. This issue appears with gnome/xfce4/openbox. Perhaps it is not related to desktop ...
1
vote
1answer
235 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
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0answers
136 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 ...