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

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2
votes
2answers
129 views

How to autoplay ogg stream at startup of Debian

I am programming a Rasberry to Pi to become a radio player. It is meant to be used to play the local college radio in the student union hangout. INPUT: Power is turn on. OUTPUT: Audio is played ...
1
vote
1answer
302 views

ALSAEQUAL runs, but sliders do not seem to affect audio

I want to have an equalizer that lets me easily adjust sound for listening to music on my laptop with headphones. I'm trying to install ALSAEQUAL since it seems that this is the preferred tool for ...
1
vote
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 ...
4
votes
1answer
166 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 ...
4
votes
4answers
2k 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 ...
3
votes
1answer
498 views

Change default port for PulseAudio (line out, not headphones)

When I boot, PulseAudio defaults to sending output to Headphones. I'd like it to default to sending output to Line Out. How do I do that? I can manually change where the output is current sent as ...
23
votes
3answers
18k views

How can I record the sound output with gtk-recordmydesktop?

I am using gtk-recordmydesktop to record the video output to my desktop. However, the videos have no sound. All the tutorials I found regarding this involved getting sound recorded from a microphone, ...
1
vote
0answers
282 views

Bluetooth (A2DP) Audio input device

I use my Ubuntu (13.10) laptop as an A2DP (Bluetooth audio) sink for my Android phones. The music I play on my phones is sent to the laptop and is heard through laptop speakers. Now I'm trying to ...
1
vote
2answers
75 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?
0
votes
1answer
298 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 ...
4
votes
1answer
1k views

Fix Skype audio input in Mint 17 Cinnamon

Linux Mint 17 Cinnamon (Ubuntu 14.04) HDA Intel PCH The microphone works well (tested with VLC's capture mode), but Skype won't catch any sound. Only PulseAudio is listed in Skype's configuration as ...
1
vote
1answer
92 views

Lost sound with xmonad

I downloaded this config to set up xmonad. Hit volume up, down, works fine. Hit the volume mute hotkey, sound's gone. All good. Hit the mute key again, sound's still off. Hit volume up, nothing. ...
0
votes
1answer
361 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 ...
0
votes
0answers
208 views

Unable to use python speech_recognition lib Microphone class due to ALSA

I am attempting to write a speech recognition program for the raspberry pi, however I am facing some issues using python's speech_recognition library. From the error messages (posted below) I think ...
3
votes
1answer
3k views

How to enable both built-in audio output and HDMI audio output with PulseAudio?

I've been searching for this issue for days now and tried various solutions suggested, without any success. Basically, I have a laptop with built-in audio (the output goes either to the headphone ...
2
votes
0answers
46 views

arecord until sound level drops low enough

I am trying to implement constant voice recognition on my Pi at the moment, I am achieving this by having two threads running, one constantly recording (with arecord in a bash script) for X amount of ...
2
votes
1answer
1k 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 ...
2
votes
0answers
23 views

Linux sound lags while copying from USB key

Why did I experienced sound skipping while copying a big file from my USB key onto my computer's drive? I monitored the system during this I/O operation: music was playing from Internet on the ...
1
vote
0answers
23 views

Debian - System (audio) Settings breaking when starting/stopping LXC

I'm rather new to Linux, recently having to start using it to make something for work (controlling Linux Containers). I'm on debian: $ uname -a Linux debian 3.2.0-4-amd64 #1 SMP Debian ...
0
votes
0answers
269 views

Can't open audio device /dev/dsp: Device or resource busy

I am install Debian Jessie Beta2 on my laptop, and I just compiled mplayer on it. however when i use mplayer command to play some videos, i can't get the sound, the error shows as below: Can't open ...
0
votes
0answers
129 views

Simultaneous sound output to both hardware and virtual output device using PulseAudio

I would like to output all sounds from my computer through a virtual output (which is an UPnP/DLNA renderer) and at the same time through the hardware output device "Built-in Analog Stereo". The ...
2
votes
2answers
80 views

Unable to listen or use microphone in Skype

I installed Skype 4.3.0.37 on my machine (debian 7 64bits XFCE 4.10) and both incoming and outgoing audio is not woring. I tried the echo sound service of skype but to no success. Here my ...
1
vote
0answers
41 views

Linux mint sound problem

Suddenly my sound doesn't play from the headphone jack anymore, for no apparent reason. I use a NUC and have always switched manually between output devices, as needed. If I switch to "built-in audio ...
0
votes
1answer
506 views

BeatsAudio Driver for Linux using laptop model HP Envy M6

Back when I was on Windows 8, I installed the Beats Audio driver for Windows and everything sounded so clear and beautiful. I'm running Linux now (specifically Mint) but I wouldn't know how to install ...
1
vote
0answers
73 views

Real-time noise cancellation

I have a very noisy heater in my apartment producing a constant whining sound between 6230 and 6280 Hz. The frequency varies but seems to fall within this range. Other apartments in my building have ...
5
votes
3answers
9k 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 ...
0
votes
1answer
24 views

AmSynth 1.5.1 with jack and alsa (JACK init failed: error: could not open ALSA MIDI interface)

I built and compiled amSynth 1.5.1 from source. I then started qjackctl and ran amsynth from command line, but it produced the following error. JACK init failed: error: could not open ALSA MIDI ...
1
vote
0answers
78 views

How to troubleshoot jack detection in Pulseaudio

Pulseaudio apparently supports "jack detection", meaning auto-detection of whether anything is plugged into each jack (e.g., headphone jack, line out jack) or not. Unfortunately, Pulseaudio's jack ...
0
votes
0answers
159 views

Jabra BIZ 2400 USB HeadSet doesn't output sound

I'm trying to get my Jabra BIZ 2400 USB HeadSet working on my Debian Jessie install, but I get nothing from the headphones. I've installed Audacity to test things and it will record audio, but then ...
1
vote
0answers
26 views

Reason for interrupt in device driver

In my Audio driver I have Interrupt handlers for Download audio i.e., Audio playback and Upload i.e., Audio Record Sometimes when music is playing smoothly I am getting interrupt because of which i ...
2
votes
1answer
113 views

Mapping metadata with avconv does not work

The way I understand man avconv (version 9.16-6:9.16-0ubuntu0.14.04.1), the following command should convert input.ogg to output.mp3 and carry over metadata: avconv -i input.ogg -map_metadata 0 ...
1
vote
1answer
88 views

Send sound output to application and speaker

I'm using my Ubuntu 14.04 LTS Laptop toplay music at a party. I'm using Mixxx and is performs very well for that task. Now I'd like to add some light effects and plan to use Qlcplus for that. So I ...
0
votes
1answer
76 views

Is there a way to check the losslessness of a FLAC file in Linux?

Let me explain my question with greater detail: I know FLAC is a lossless audio format with respect to the original file; this is, any piece of audio encoded with FLAC will be preserved completely. ...
24
votes
5answers
18k views

How can I play a sound when script execution is ready?

I am executing every now and then some python scripts which take quite long to execute. I execute them like this: $ time python MyScript.py How can I play a sound as soon as the execution of the ...
5
votes
1answer
265 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 ...
3
votes
4answers
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 ...
1
vote
1answer
129 views

Audio CD source plugin for .wav files . Linux

I have a CD which contains a number of .wav files. When I try to open one I get: The playback of this movie requires a Audio CD source plugin which is not installed. Can someone please sent me ...
27
votes
5answers
10k views

How do I split a flac with a cue?

I've got a full album flac, and a cue file for it. How can I split this into a flac per track. I'm a KDE user, so I would prefer a KDE/QT way, I would like to see command line and other gui answer's ...
0
votes
0answers
1k views

No audio codecs on Fedora 21

I've been trying to listen to music in Fedora 21 but unfortunately I cannot. Here is what I tried: yum update yum install gstreamer gstreamer-plugins-good gstreamer-plugins-bad ...
4
votes
1answer
58 views

Make a copy of the audio output into a file

How to get the sound that I can hear in my headphones into a file or into a variable in my C/C++ program? I'd like something like the framebuffer for images. My main goal is sending sound to another ...
5
votes
2answers
1k views

How can I create a direct 8khz audio pipe in Ubuntu?

I'm interested in creating musical programs like these: http://www.youtube.com/watch?v=GtQdIYUtAHg&feature=player_embedded Essentially these programs just generate sequences of integers, which ...
3
votes
1answer
2k views

How to get recordmydesktop to record application's audio on Debian/Squeeze?

I'm on an amd64 Debian/Squeeze install on an Intel DX58SO motherboard. I want to use recordmydesktop to record application's audiovisual output. It's important any audio generated by the ...
3
votes
1answer
46 views

How to stop gnome from muting my music?

I use ArchLinux, and I recently installed Spotify which is working fine, except for one thing: Every time any program triggers a system sound, the player volume is automatically muted in the mixer. ...
0
votes
0answers
91 views

Sound is messed up when using GNU/Linux and headphones - (chanels seem mixed)

When I use headphones under Linux Mint sound doesn't seem right. (Music/effects are usually ok but voices tend to be extremely quiet.) I think channels might be mixed or something. Headphones work ...
36
votes
1answer
3k views

redirect sound (microphone) via ssh, how to telephone via ssh?

How can I redirect the microphone of one computer to listen to it on another computer via ssh? Which is the right device or which is the right command line? Some years ago it was easy and fun to ...
0
votes
0answers
51 views

Sound not working in my Ubuntu desktop after the sudden power cut

i googled in many articles but does't fix this problem i tried this but does't help me sudo apt-get remove --purge alsa-base pulseaudio sudo apt-get install alsa-base ...
1
vote
1answer
76 views

Why most apps try to use OSS if /dev/dsp is present?

So why most applications apparently try to use OSS if /dev/dsp is present on a system where more advanced audio servers (ALSA or PulseAudio) are also available? I experience this after installing ...
0
votes
0answers
364 views

No sound in arch linux with xfce4

I have installed Arch Linux with Xfce4, I installed alsa-firmware, utils and plugins. I haven't installed PulseAudio. I have no sounds in my laptop at all :/ I have unmuted in alsamixer my speakers. ...
2
votes
2answers
409 views

How can I automatically silence my computer at night?

I would like to set my Ubuntu computer such that I can't hear any audio between 9:59pm and 8:00am. How can I do that?
1
vote
1answer
136 views

Pulseaudio complains about a lack of “org.bluez” and does not play any sound. How to fix?

My pulseaudio (5.0) on arch (Linux 3.17.2-1-ARCH) does not play any sound. When running the daemon explicitly as pulseaudio -vvvv --log-target=stderr, I get the error message GetManagedObjects() ...