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

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2
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0answers
10 views

How to make Alsa Loopback device to work in Puredata

I'm trying to route an audio signal from an Airplay source (with Shairport-sync) to Puredata. To do so, I created a Loopback Device in Alsa. Then I set this virtual device as Shairport's output like ...
1
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0answers
7 views

Can I create a buffer file with arecord?

I need to record some sounds from my audiocard to make a stream(Nothing special in this just trying new things), but I can't make the arecord play direct on it, so can I create a buffer file where the ...
3
votes
2answers
25k views

Getting sound working on Linux mint 13 Mate

I have just installed linux mint 13 and I haven't used linux before so I apologise upfront if this question seems basic. I am unable to hear any form of audio on file which I try to play in any ...
2
votes
1answer
30 views

Embedded Linux USB Audio Issue

I have a Corewind WiFiG25 board based on the AT91SAMG25 400 MHz following Arm processor running Linux 3.6.9 built using Buildroot. I am attempting to play mp3 files using mpg123 connected to an ALSA ...
3
votes
1answer
2k views

Sound volume control does not work in Ubuntu

My sound volume control does not work when I'm logged in with my regular user, though the sound works correctly. What's weirder is that the sound control works when I'm logged in as guest. With my ...
0
votes
1answer
32 views

Sound problem (chipset ALC280 and kernel 3.2.0-4-amd64)

I recently installed Debian Wheezy and sound doesn't work (glitches/distortions). Output of lspci -v | grep -A 6 Audio: 00:1b.0 Audio device: Intel Corporation Wellsburg HD Audio Controller (rev 05) ...
0
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0answers
7 views

Why does qjackctl come up with gray windows, no GUI?

I ran qjackctl a while ago. The window came up gray, no GUI controls. I tried killing it, and using xkill. It went away, but ps still shows qjackctl. About fifteen of them! For I had attempted to ...
0
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0answers
14 views

No sound with audio jack

I am using a Debian wheezy on Netbook eeepc 1001px After last kernel update When I plug the audio jack, I can here the electric charge but no sound when I remove it the internal speaker works ...
0
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0answers
13 views

Debian ARM on SG2 no audio

I started using Debian Linux Deploy on my Android. Communicates via VNC. I have a problem when running audio file with mplayer. Got the following error: roott@localhost:/home# mplayer ...
1
vote
1answer
15 views

Plug dmix into JACK

There are several guides of how to use JACK with ALSA dmix plugin, like this and this. All of them suggest to route the JACK output through dmix, which causes a latency to the jackified programs. To ...
0
votes
1answer
668 views

My Ubuntu 14.04 LTS doesn't have sound

I installed Ubuntu 14.04 on VMware workstation version 10.0.0 on my Windows 7 machine. After installing I figured out that it doesn't have any sound so I checked the sound settings. All items seem to ...
2
votes
2answers
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" ...
2
votes
2answers
586 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
2k views

Splitting WavPack files when the .cue file and .wv file have different names?

If a directory contains an album encoded as one large .wv file and a .cue file, splitting the entire album into individual .flac tracks is a simple task: $ cuebreakpoints foo.cue | shnsplit -o flac ...
0
votes
2answers
822 views

How to get sound intensity of an audio input through terminal?

I want to know the intensity of the sound being heard by an audio in source like a mic or Line-in through Command line. Kinda like the progressbar under the mouse but in CLI. audiointensity mic0 10 ...
1
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0answers
49 views

Is there any sound enhancer/equalizer for Linuxes that are not Ubuntu?

I am looking for a systemwide audio equalizer for Debian, Gentoo or Red Hat Enterprise Linux, i.e. an audio equalizer that filters the entire signal that is sent to the audio chipset, something ...
1
vote
1answer
33 views

How can I use ALSA dmix and multi plugins together?

I'm playing with a console sound visualiser which wants its own ALSA device to listen on. I'm editing ~/.asoundrc. I know I'll need the multi plugin to split the sound data onto separate devices. ...
3
votes
0answers
19 views

End recording once silence is detected

I've been using something like this up to now: End sox recording once silence is detected But now I'd like for the audio source and recording mechanism to be separate. I can get the source as an ...
1
vote
1answer
35 views

how do applications communicate via sockets

On my computer audio works sometimes and sometimes not. I want to troubleshoot this. First I verified I am using pulseaudio. I did this by strace'ing the pulseaudio process: [pid 2289] send(28, ...
1
vote
1answer
17 views

Alsamixer has extra things that won't go away

While trying to put a "pre-amp" slider into Alsamixer, using /etc/asound.conf, I managed to get it wrong several times. Each time I changed something in /etc/asound.conf and restarting ALSA, I wound ...
1
vote
0answers
20 views

Share alsa capture device with alsaloop

I'm trying to 'share' the microphone input such that programs can have access to it. Initial naive attempt. In one terminal: alsaloop -C hw:1,0 -P hw:0,0 -t 500 -c1 -A 5 -T-1 --resample -v In ...
0
votes
1answer
1k views

Ubuntu sound not working after sleep/suspend

Whenever I sleep my laptop I mean if I down the flap sound doesn't work, every time i have to restart my laptop for sound to make working. Fo instance right now sound is not working(since I closed ...
3
votes
1answer
712 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 ...
3
votes
1answer
711 views

how to merge two audio input source using avconv

I try to make screencast using avconv and I facing a problem. I finally succeed to record both pc output and microphone input , the problem is that they're not merged in the output file. (I saw ...
1
vote
1answer
50 views

Issues with arecord command

I'm having some mixed results with the arecord command in the terminal. The hardware I'm using consists of the Cirrus Audio Card for the Raspberry Pi. I'm trying to record a 24-bit 192kHz sound (from ...
3
votes
2answers
2k views

volume hot keys in Crunchbang don't work

I've spent 2 hours on this and still can't figure this out. It's driving me insane. Please save my sanity. When I press mute, the pnmixer control in the top right shows that I've pressed mute, but ...
0
votes
2answers
925 views

How do I capture audio from interactive webpages using VLC?

I'm trying to capture an audio video feed (screen-cast) from my web browser and all screen-casting options I tried have the same issue: No sound is captured Platform I'm using a near default ...
0
votes
2answers
1k views

Alienware M14x - No sound in linux Mint 14 (Nadia)

I have done a fresh install of Linux Mint 14.1 x64 on my Alienware M14x. Everything was working fine after installed. Unfortunately the sound is lost after sometime. Theres no sound when playing video ...
4
votes
3answers
7k 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 ...
1
vote
0answers
50 views

How to use sox or ffmpeg to detect silence intervals in a long audio file and replace them by zeros (aka suppress background noise)?

I have a long audio file that was created by concatenating many short files. I would like to detect silence between the speech segments (just a threshold is enough for my purposes) and replace them by ...
0
votes
0answers
84 views

Sound is not working in Ubuntu 14.04: suddenly stopped

The sound suddenly stopped working in my Ubuntu, so I googled and followed this link but it doesn’t work to me. Output of aplay -l: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA ...
0
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0answers
27 views

Fedora - Integrated microphone not working

I just installed a fresh Fedora 21, my system is now up to date. Now, my problem is that my integrated microphone is not working. I tried several different fixes that doesn't work (install and ...
4
votes
1answer
673 views

Linux support for RTP-MIDI?

I have been spoiled by the ease with which I can connect my iPad up to MIDI applications on my Macbook using the native support for midi-over-the-network (apparently RTP-MIDI) provided by the CoreMIDI ...
0
votes
1answer
23 views

Change audio volume on the right device

I'm trying to change the master output volume of my USB DAC (PCM 2704). When doing aplay -L I get: null Discard all samples (playback) or generate zero samples (capture) default:CARD=ALSA ...
1
vote
1answer
426 views

No on-board sound on Dell Optiplex SX-280 post Linux Mint Petra Install

Not sure this fits in here.. We recently installed Linux Mint Petra on this small-form-factor dell desktop. The weird thing is, the sound does not work on board, but works on a speaker connected to ...
1
vote
1answer
706 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.
1
vote
1answer
49 views

How do I set the output port on my audio card?

My audio card has two ports, for clarity I'll call them the 'speaker' and 'headphone' port. In windows, the audio control sees two separate ports, and I can switch back and forth between speaker and ...
1
vote
0answers
12 views

Raspbmc audio Scarlett 8i6 I/O

I am trying to get RaspBMC to play audio through a Focusrite Scarlett 8i6 soundcard but so far I cannot play any music through the default interface. I have tried checking the external audio ...
0
votes
0answers
21 views

JACK pitch shifting

I like to play along with songs coming from firefox on my MIDI keyboard, so I have Pulseaudio routed through JACK as detailed here. But a lot of the time, especially in older recordings, the pitch ...
1
vote
0answers
14 views

Why do CUE sheet files have to have a blank line at the very end?

I was trying to split a .flac file using its CUE sheet and the command cuebreakpoints audiofile.cue | shnplit -o flac audiofile.flac, but kept getting some error. Checking with other CUE sheets I have ...
1
vote
0answers
44 views

Playback and simultaneous recording through external USB sound card

I've an external USB sound card (in my case it's a TerraTec Aureon 7.1 USB). I've looped the earphone-out to the line-in using a 3.5mm jack cable. I'm interested in starting the playback of a MP2 ...
0
votes
2answers
62 views

How to convert WavPack to FLAC?

I need to convert a bunch of .wv files to .flac but I can't seem to find a program to do it. Does anybody know how I can do this? P.S.: I was wondering why Audacity does not support the importing .wv ...
3
votes
0answers
53 views

Set maximum volume in Arch Linux

Recently, I purchased new over-ear headphones that have some really powerful speakers. I usually have to listen at ~4% volume to use them comfortably. Each time I restart my computer, they move back ...
0
votes
1answer
43 views

Sound doesn't work on a Centos 6.5 VPS

I installed GNOME Desktop Environment on Centos 6 on my VPS, then I installed Firefox, Flashplayer and VLC. Everything work well but I can't hear the sound. I searched for a solution on the Internet ...
15
votes
5answers
12k views

Sending audio through network

This is a rather crazy idea. I am planing to set up a configuration that would send audio being played on my laptop to my home server via local network so that the sound is played on the server ...
0
votes
2answers
67 views

Alsa mixer unmute problem on Thinkpad laptop

After updating my Debian jessie laptop yesterday, the mute/unmute button stopped working. The volume up/down buttons work and I can mute the sound but when I press the mute button again to un-mute, ...
1
vote
4answers
635 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 ...
3
votes
1answer
585 views

Record audio from multiple devices with ALSA and Pulseaudio

I want to record audio from multiple input devices using ALSA and Pulseaudio. More precisely, I want to play UltraStar Deluxe. It is a game using SDL. As far as I can tell, it supports ALSA only. ...
0
votes
2answers
234 views

YAD and Zenity - Input Start/Stop Times to Trim Video

I have a bash script and a php script that function in concert to trim audio/video files using start/stop times. PHP script: <?php // Create datetime objcects $dt1 = new DateTime($argv[1]); $dt2 ...
1
vote
1answer
32 views

Is there any app that records notes with synchronized Audio?

Is there any application that it records audio and you take notes. After recording you can play the audio that was recorded when a specific text was written. There are apps that does this for other OS ...