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

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Ubuntu Studio problem with WINEASIO: Press play - Nothing happens

I have managed to install WINEASIO on my ubuntu-studio 14 , it finally appeared under the ASIO list in both Reaper and Ableton 9, running on play on linux. Both are 32bit. qjackctl seems to be running ...
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8 views

Playing sound through /dev/dsp?

I have a USB soundcard attached to my Raspberry Pi. I used the command: sudo modprobe snd_pcm_oss which created /dev/dsp and /dev/dsp1. /dsp corresponds to the internal soundcard whereas /dsp1 ...
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1answer
37 views

How to detect peaks in audio file?

Given a several minute Wave file with short clicking sounds at semi regular intervals, how would I go about getting millisecond timestamps for each of the clicks? I'm trying to verify the accuracy of ...
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22 views

Sound output changing automatically

I'm trying to solve this problem for days. When I'm listening loud(around 100%) music, system is changing output device from Analog Output to Headphones output. Headphones output is not even available ...
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1answer
12 views

How to create the spectrogram of many audio files efficiently with Sox?

I have a bunch of audio files and I would like to create the spectrogram for each individual file using Sox. Usually, for a single file, I do this: sox audiofile.flac -n spectrogram However I don't ...
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1answer
15 views

How to burn lossless music to a CD?

I have a bunch of lossless files (.flac and .ape) that I would like to burn on a CD to listen to on any standard CD player (in my old car's for example), but I am unsure how to do it. Specifically I ...
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11 views

Left channel sound level very low compared to Right one

I am using the front analog audio jack from the NUC (microphone in/headphone out/speaker out) with a standard jack and standard speakers or headphones (which work well on another computer). I tried ...
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13 views

How to switch off my laptop speaker when headphones is plugged

I've Kubutu 15.04 then KDE Plasma 5 and my laptop speaker doesn't switch off when headphones is plugged. Here my alsamixer snaptshot: My laptop is a ASUS N550L My sound card I found with lspci: ...
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1answer
29 views

Disable beep/chime in Secure Shell in Chrome OS

How do I disable the beep/bell sound that is emitted in Secure Shell in Chrome OS? When certain commands fail, such as pressing backspace on an empty command line or on a failing tab autocompletion, I ...
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17 views

What are XRuns?

I have read about them several times and encounter them myself when setting the buffer size too low in jack or quitting audio applications. Nobody ever explains though what XRuns are. Can someone ...
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0answers
8 views

amixer: Mixer hw:0 load error: Invalid argument

Everytime i start my debian7, the error message pop out: amixer: Mixer hw:0 load error: Invalid argument root@localhost:~# lspci |grep -i audio 00:1b.0 Audio device: Intel Corporation NM10/ICH7 ...
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15 views

urxvt- play mp3 instead of beep

Does anyone know how to make urxvt play a mp3 file in replacement of a system beep? My PC does not have a pc speaker so I need a way to make terminal notifications go through sound card.
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30 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 ...
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8 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 ...
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1answer
36 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 ...
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10 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 ...
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1answer
38 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) ...
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22 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 ...
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15 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 ...
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1answer
20 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 ...
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1answer
45 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. ...
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0answers
25 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 ...
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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 ...
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27 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 ...
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1answer
39 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, ...
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1answer
70 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 ...
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67 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 ...
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103 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 ...
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1answer
70 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 ...
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34 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 ...
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1answer
27 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 ...
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1answer
59 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 ...
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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 ...
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0answers
24 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 ...
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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 ...
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52 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 ...
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2answers
79 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 ...
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0answers
59 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 ...
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1answer
49 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 ...
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1answer
34 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 ...
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2answers
98 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, ...
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0answers
41 views

Unable to connect debian to android via bluetooth

I want to connect my android phone to my debian computer. And to be able to play audio from my phone through the laptops speakers. I have been able to do so in the past on Ubuntu and ElementaryOS ...
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0answers
73 views

PULSEAUDIO does not list my ALSA capture device as a capture source

First of all, Hello everybody! My name is Przemek Gajos and this is my first post here. I have recently written an ALSA driver for my audio capture card and I have problems with PULSEAUDIO ...
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1answer
25 views

How do i start a sound file without displaying the window of the player ?

Whenever I type xdg-open filename or vlc filename, a window opens and start playing the filename. How can I achieve to play the sound file without displaying a corresponding window in the command line ...
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2answers
244 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 ...
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1answer
193 views

Trim audio file using start and stop times

I have an FFmpeg command to trim audio: ffmpeg -ss 01:43:46 -t 00:00:44.30 -i input.mp3 output.mp3 The problem I have with this command is that option -t requires a duration (in seconds) from ...
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2answers
83 views

Change of voice via ffmpeg or other application [closed]

I have a set of audio files containing voice recordings, I need to alter the voice signal so the speaker cannot be recognised in an automated way... Do you know some application?
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1answer
389 views

Audio not working on Arch Linux [solved-ish]--see #UPDATE

I've installed the alsa-utils package. Running amixer sset Master unmute returns the error amixer: Unable to find simple control 'Master',0. Executing alsamixer gives me the alsamixer application in ...
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2answers
378 views

FreeBSD 10.1 sound not working

I am new to BSD and I am experimenting with getting an old(ish) Packard Bell desktop machine out of mothballs. The basic installation of FreeBSD 10.1-RELEASE for amd64 seems to have gone fine, but I ...
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1answer
443 views

mpd fails to open ALSA device where aplay succeeds

I am trying to set up an Raspberry Pi / Raspbian wheezy audio player using the onboard sound hardware via ALSA LADSPA plugins to stereo downmix and compress the audio. aplay, sox, mpg123, moc (cd ...