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

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1answer
412 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 ...
1
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1answer
2k views

ffmpeg -acodec copy does not copy all audio stream to the new container

I wish i can find ffmpeg help here at stackexchange. I'd been re-encoding old videos to libx264 to save up some storage space, as I thought it should be working based on documentation seems failing to ...
1
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3answers
668 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, ...
0
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0answers
33 views

How to play a beep/sound file from the u-boot for Panda-board?

I want to play a Beep/Sound file during the boot up from the u-boot on the speakers connected to panda-board. As this functionality is there in PC ,How to replicate the same on the embedded platform ...
3
votes
1answer
64 views

Why do Pidgin sounds change the volume of music for their duration?

I am running Debian 8 (Jessie). Pretty plain install except I'm running AwesomeWM, no desktop environment, and Gnome is pretty much nowhere to be seen. PulseAudio is setup with defaults. I use Pidgin ...
0
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1answer
100 views

use ffplay to play a list of audio files

There are many audio and video players but I would like to use one tool for many propose. So I would like to use ffplay as audio and video player. To play a one file the command is like this. ffplay ...
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0answers
42 views

Linux Mint - No Sound

I'm currently using Linux Mint 17.3 Rosa and when I installed it in the first place months ago the sound and everything worked fine. It still does in fact, the problem is that none of the system sound ...
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0answers
22 views

Sound doesn't work in user account but does in root

I have no sound under my user account but when I log into my root X account I do. pavucontrol works and the sound bar is moving when I play a sound but I have no sound. The port is named Digital ...
0
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2answers
159 views

Can't install xfce4-mixer

When I go to Synaptic and try to install xfce4-mixer it responds: xfce4-mixer: Depends: libgstreamer-plugins-base0.10-0 but it is not going to be installed Depends: libgstreamer0.10-0 but it is ...
5
votes
2answers
1k views

Output sound by writing to /dev/dsp

I know that it is possible to write arbitrary data into /dev/dsp and a noise will come up from the speakers. But whatever data I pass to this file the noise is the same. I wonder is it possible to ...
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2answers
104 views

sox in between two pipes

I'm trying to put the "sox" utility in a two pipes command to resample a mono 44kHz audio file to a 16kHz audio file. It works fine with a single pipe : $ speexdec toto.oga - | sox -V -t raw -b 16 -...
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0answers
59 views

Connect to two bluetooth audio sinks

I have two bluetooth audio receivers, one in the living room, and one in my bedroom. I connect to those from my laptop. Both receivers are visible from most places in my house. My plan is that I ...
3
votes
0answers
78 views

How can I create a two-way voice communication system that works over the local network?

I wish to create a simple two-way voice communication system between two Linux computers running Debian-based distros (probably two Raspberry Pi Zeroes). Each computer will have a microphone and ...
1
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3answers
109 views

How can convert characters into characters that'll produce beep noises?

I'm new to Linux and have recently started working on my very first (very simple) project - a morse code generator. I've been able to get the translation working, and now I want to take the next step. ...
2
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0answers
93 views

mplayer: Problem opening sound files, gnome-mplyaer works, why?

I'm new to this community and this is my first question. I am using Debian 8.3 Jessie and have two sound files a.mp3 and b.mp3 on my hard drive. I am using mplayer and gnome-mplayer to open these ...
1
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1answer
35 views

How to recover ALSA default configuration after reverting changes in .asoundrc?

I've done some changes via .asoundrc (created "softvol" volume controls). Now, I want to get rid of these changes. Nothing of the following helped so far: Deleted .asoundrc and rebooted system. ...
0
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0answers
7 views

Using wireless headphones with HP dc7800?

Can I use usb wireless headphones with HP Compaq dc7800 small form factor computer? I plugged in usb, and got green light on headphones, but no sound. Do I need newer computer (2011)? Any help ...
2
votes
2answers
2k 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 ...
1
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0answers
43 views

PulseAudio cannot change the sink for one specific program

I'm trying to play sound from Telegram through my headphones, which have an internal audio card. Here is the list of programs which produce audio output channels: $ pactl list sink-inputs Sink ...
1
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0answers
11 views

Mute audio but make it capturable for screenrecorder in linux

I can capture videos with audio for example with simplescreencapture. Usually this just captures what I see on the screen and what I hear from the speakers. If I mute the speakers, no audio is ...
42
votes
6answers
77k views

Set volume from terminal

Is it possible to set the audio volume using the terminal?, instead of clicking the speaker icon in the topbar, the reason I want need to do this is because my keyboard does not have a volume increase/...
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2answers
123 views

Linux Audio Spectrum Analyser

I'm an undergraduate student and I am looking for a spectrum analyzer(or at least a collection of functions), that will output the frequency range of a sound that is played, as an array.
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2answers
800 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 alsamixer....
2
votes
1answer
112 views

No sound in Debian 7

I've installed Debian 7 but there is no sound. The motherboard is H110M-D D3. Is there any way besides upgrading the kernel to make the audio work? I've tried the most common solutions (mute in ...
0
votes
1answer
749 views

Linux mint 17.3 without HDMI sound output

Well, tried everything: alsa, alsa-utils, alsamixer, pulseaudio, puvecontrol and a lot more. Even I changed from ubuntu to Linux mint, but I can't get sound from hdmi (laptop connected to led tv). I ...
0
votes
1answer
734 views

Audio support for Realtek Chip

I've build my own PC with ASUS Z97-P Motherboard with a Realtek Audio Chip. Everything works fine, but I can't get the audio working. I'm using KDE 5 and tried Phonon with VLC and GStreamer backend, ...
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0answers
56 views

Sound from radio to sound card's S/PDIF In isn't detected

When I had Linux Mint 17.1 KDE installed, I would capture music (using Ocenaudio – couldn't get Audacity to record) from an external Internet radio player / DAC to the computer's Xonar D2 sound card's ...
1
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1answer
172 views

Using aplay and choose which output on card to use

I have an xmos-200 board that is able to record 8 channels and push output through 8 channels. I'm going to focus on the output. For outputs, there are 4 3.5mm jacks with 2 channels each. The board ...
2
votes
1answer
206 views

Sound (Beats Audio) problem on HP m6-1035dx Linux Mint

Yesterday I installed Linux Mint (17.2) on my HP Pavilion m6-1035dx and I'm experiencing problems with my sound. The laptop has 2 speakers and a subwoofer (Beats audio). Only the right speaker works. ...
2
votes
0answers
108 views

jackd and SuperCollider headless problem

I am trying to boot an RPi autonomously to start jackd, SuperCollider and then play a SuperCollider patch. Jack launches and Supercomputer starts to compile but then something goes wrong. The script ...
12
votes
1answer
4k views

Cleaning voice recordings from command line?

I have used Audacity for removing noise from recordings before, however it has very limited command line usage. I have ~100 short lecture videos which I will be watching over the next few months and ...
0
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0answers
117 views

Bad sound quallty with Conexant CX20751/2

I have a Lenovo G50-80 with a sound card detected as Conexant CX20751/2 The sound under linux (Debian based) is very bad, with something like a metallic sound. I'm using this config at /etc/modprobe....
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0answers
137 views

Lenovo ThinkPad headphones trouble (combo jack)

Well... Sometimes ago I've bought a laptop Lenovo ThinkPad E555 with pre-installed Windows. I've removed Windows and installed Linux Mint 17.3. And now, sound through headphones does not work, only ...
0
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1answer
158 views

WiFi and Sound doesn't work on Kali Linux on Mac Mini late 2014

I installed Kali Linux on a Mac Mini, but I have problems with the WiFi card, and with sound. ~# lspci 00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 09)) 00:1b.0 ...
2
votes
1answer
108 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 ...
2
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0answers
23 views

ALSA skipping initially during playback

I have an ALSA configuration that provides the following at the moment: Take default audio and make it mono Pass through alsaequal Expand audio to 4 channels, all mono Split 4 channels between 2 ...
0
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0answers
71 views

arecord raw data to flac

I'm trying to record some raw samples with arecord and once finished convert them to flac format, but I'm only getting garbage. I need it to be first raw as I'm parsing the data to detect when there ...
0
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0answers
77 views

output sound in linphone choppy (while fine when recorded and played back)

I'm using Debian Jessie with pulseaudio. I can start phone calls with linphone and hear fine, the other side hears me fine, too. After some time of having the phone call established (~20min), the ...
0
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0answers
32 views

How to solve random HDMI (external screen) / audio output issues in Linux Debian 8?

About half of the times I start up my Debian 8 machine sometimes goes wrong in the boot sequence (particularly in auto starting apps set in "autostart" I would say). I can say that because after a ...
0
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0answers
18 views

Choppy sound on Asus Eee PC 1101HA using Fedora XFCE spin

I just installed the Fedora 23 XFCE spin on my Asus EeePC 1101HA. The sound is choppy with parts missing, skipping and doubling-up. This is the case for anything that I've tried, including speaker-...
0
votes
2answers
165 views

Debian 8 - choppy sound

I've installed both Debian 8 and Windows 7 on my pc. The thing is, Debian audio drivers produce really choppy sounds. Windows works fine. After trying some methods from google, I actually feel more ...
1
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0answers
41 views

3D sound based on window position

Okay, I know this sounds weird, but hear me out please. Assume the following: I've got a 4k screen here, maybe another one in the near future. I like to watch videos while doing boring stuff. This ...
0
votes
1answer
3k 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 ~/....
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0answers
23 views

Ubuntu Wily - HDA is not listed in lspci anymore (but works in Windows)

My laptop (Dell Latitude E6420) was used to have minor issues with the audio. Sometimes pulseaudio would stop playing and I had to do alsa force-reload and restart pulseaudio to get it back to work. ...
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0answers
81 views

External subwoofer “Sonic Master” on an Asus N750JV dosen't work

My config: Distro: Debian 8.3 jessie DE: Gnome 3.14.0 lspci -k | grep -i -A2 "multimedia\|audio" output: : 00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio ...
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0answers
23 views

Isolating all audio for a specific user account with Pulseaudio

I've done some Googling on this subject, and looked around on Stack Exchange, but I haven't yet found a question canonically similar to mine. If this is the wrong section of Stack Exchange to ask this ...
0
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0answers
196 views

Audio over HDMI (NVIDIA)

Hi Im using Linux Mint 17.3, my graphics cards are integrated intel and NVidia GT 650M (with HDMI output). Im using nvidia-352 driver. So the problem is that i cant get sound over hdmi working (works ...
0
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0answers
39 views

Multiple sound errors when running Pyo

I just tried to install the python module with pyo following this method: http://ajaxsoundstudio.com/pyodoc/compiling.html it returned this error: pyo version 0.7.8 (uses single precision) ALSA lib ...
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0answers
44 views

USB audio not working when plugged in during boot

I have a problem with the audio in my ThinkPad OneLink Pro Dock not working with Linux. I have had this problem with OpenSUSE 42.1, Tumbleweed and Fedora 23. I think I will have it with any other ...
1
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1answer
106 views

Deadbeef audio player does not retrieve online (freedb, CDDB) info about CD tracks

Many Linux players (like Audacious, Banshee, Amarok, Exaile) can easily access audio CDs tracks info (names and other metadata) but Deadbeef cannot, although it has a cdda plugin that should do just ...