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

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8 views

Crackling audio, normal fixes not working

I recently installed Elementary OS on my system, but I now have terrible quality audio. Any sound (including the test speaker sound on the audio settings) is crackly to the point of being ...
1
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1answer
22 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 ...
0
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2answers
27 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
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0answers
16 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 ...
1
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0answers
49 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 ...
1
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1answer
23 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 ...
0
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2answers
168 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 ...
4
votes
1answer
108 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 ...
1
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2answers
56 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
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1answer
100 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 ...
0
votes
2answers
216 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 ...
0
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1answer
127 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 ...
1
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1answer
65 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
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0answers
103 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 ...
2
votes
0answers
38 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
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0answers
19 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
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0answers
15 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
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0answers
103 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
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0answers
65 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
43 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
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0answers
33 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
184 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
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0answers
43 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 ...
0
votes
1answer
19 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
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0answers
38 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
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0answers
110 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
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0answers
21 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
46 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 ...
0
votes
1answer
46 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. ...
3
votes
1answer
163 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 ...
1
vote
1answer
52 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
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0answers
702 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 ...
0
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0answers
33 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
60 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
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0answers
189 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. ...
1
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1answer
78 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() ...
4
votes
1answer
50 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 ...
0
votes
1answer
79 views

Why can I not split a .wv file?

I'm a Fedora 20 user and am trying to split a .wv file into separate .flac files. I used this command: cuebreakpoints file.cue | shnsplit -o flac file.wv but get the following output: 56: syntax ...
0
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0answers
32 views

Hissing at high sound levels

There is a hissing sound starts when I crank up the volume to 3/4 of the way (nothing is playing). I booted in Windows 7 and there is no such thing happening there. Is my sound setup wrong? (I use ...
2
votes
2answers
405 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
64 views

How to add ffmpeg/avconv command to Nemo actions?

I would like to have a command like this one ffmpeg -i video.mp4 -vn -acodec copy audio.m4a into a Nemo action (context menu). But that would mean using variables instead of real names of files. ...
0
votes
1answer
84 views

Set maximum volume in Ubuntu/Gnome

I have the following issue with my volume settings (Ubuntu 12.04, 3.2.0-49-generic, Gnome 3, Lenovo X220): When I set the volume to maximum using the hardware volume keys, I get to "100%" in the Audio ...
0
votes
1answer
109 views

Command to extract audio from video without conversion

I know that flv and mp4 files contain aac audio, while avivideo usually mp3 audio streams. What command (avconv, ffmpeg) would extract the audio without transcoding it?
2
votes
0answers
62 views

Recording loopback doesn't work with alsa

I want to record a sound from speakers, not a microphone in my Linux desktop. I'm using Centos 7. I searched this subject and found this thread but it only partially works. I edited my .asoundrc ...
0
votes
0answers
70 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 ...
5
votes
1answer
69 views

sound in firefox via ssh -X

I have a headless debian box with speakers. Suppose I'm at my laptop and I do $ ssh headless -X $ audacious then audacious' window pops up on my laptop's screen. If I open a file then it ...
1
vote
1answer
58 views

JACK can't play ardour along with any other media

I recently downloaded Ardour2, and it appears that JACK cannot run Ardour along with any other media (Rhythmbox, YouTube, Pandora, etc.). The symptoms are as follows: If Ardour is the first thing I ...
1
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0answers
76 views

How to display audio visualization in VLC while playing video?

I've tried enabling all of the entries in Audio → Visualizations, but they don't show up. Disabling the video track didn't help either. Running VLC 2.1.5 Rincewind on Awesome WM.
0
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0answers
44 views

Using PulseAudio to receive RTP audio stream

I'm trying to set up simple communication between my Ubuntu distro and my Rasbian distro on the raspberry pi. I'm more concerned about the rPi side of this project. I've been looking around the ...
3
votes
1answer
900 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 ...