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

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2
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1answer
1k views

Why would alsa sound pop, crackle and be generally too distorted to listen to?

I've been having a weird issue with Alsa recently. For some reason all sounds are really distorted and no matter what application I use, I won't get anything clear out of it. I've tried Tomahawk, ...
2
votes
1answer
2k views

Why beep does not work in Ubuntu?

I've tried the below shell, but nothing happened. #! /bin/sh beep -f 500 -l 700 beep -f 480 -l 400 beep -f 470 -l 250 beep -f 530 -l 300 -D 100 beep -f 500 -l 300 -D 100 beep -f 500 -l 300 ...
1
vote
1answer
146 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 ...
0
votes
1answer
2k 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 ...
1
vote
1answer
104 views

soundblast live on linx mint: fatal: module snd-emu10k1 not found

I'm trying to get my soundblast live 5.1 emu10k1 (rev 7) working. It is listed in my xconf settings but the onboard sound processor is the standard (i have tried to make de soundblaster standard, but ...
2
votes
0answers
446 views

Internal microphone not working.. again (Fedora 20, KDE, HP 8460p)

Unfortunately I have yet another "adventure" with my internal microphone. Everything is un-muted in alsamixer, as well as in pavucontrol. It is not the first time it stopped working, but now - for ...
2
votes
0answers
568 views

Microphone not working on Centos 6.5

I have installed CentOS 6.5 on a Dell Insperion with an Intel chip. I first noticed that my microphone is not working on Skype on CentOS although it was working fine with Windows 7 on the same box. ...
2
votes
0answers
99 views

Debian: pulseaudio sink volumes syncing?

Running Debian jessie with pulseaudio, sometimes I would use pavucontrol to adjust volumes of different applications at varying levels. Then when I would forget about it and adjust the volume using ...
3
votes
2answers
411 views

Somehow managed to mute mplayer and can't figure out how to restore sound

I was randomly/experimentally pressing buttons while playing a video with mplayer. Something I did caused the video to mute. I then exited the video and tried a different one, but that one was muted ...
1
vote
1answer
3k views

Elementary os no sound after alsa update

I am new to Linux but really love Elementary for its simplicity. After noticing that my sound was quite poor in Elementary, compared to Windows 8.1, I have tried updating the sound drivers. I ended up ...
2
votes
1answer
178 views

Play a sound file slower or faster

How can you play a sound slower or faster? That would be useful for listening carefully one audio passage or to listen fast forward to find a concrete passage. Is there something with the play sox ...
1
vote
1answer
86 views

Play last few seconds of mp3

Is there any way to play last N seconds of an mp3 file on bash commandline?
10
votes
1answer
1k views

Creating a virtual microphone

I run a CentOS Server with VNC enabled and some services require a microphone to work properly, but it doesn't have to be used for recording, just a microphone device available. So I was wondering if ...
1
vote
1answer
286 views

Bluetooth headset profile not working with recent kernel

I have a Plantronics 590 bluetooth headset (the type probably does not matter, but I have no alternative to test). Using the old 3.02 I was able to use this via pulseaudio. With the current ...
3
votes
1answer
655 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. ...
6
votes
1answer
719 views

Ssh audio redirection

I have DVB-T USB dongle plugged into my Linux server (GUI-less). It works correctly, but I want to stream TV programs from server to my PC. For this I use Kaffeine that way: ssh -X -p 666 -i ...
0
votes
1answer
774 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
1answer
392 views

Nvidia HDMI audio not visible on system

I recently installed Arch Linux on my pc. I'm using a Nvidia GTX 660 Ti connected to a receiver over HDMI. I can't get audio to work over this HDMI connection. Next to my video card I have an onboard ...
5
votes
5answers
2k views

recording audio from web-based audio player using ALSA loop device

I am trying to save voicemail messages from Verizon Fios phone in best quality possible. The voicemail messages are available online, but for playing only (Java based player), no saving. Officially, ...
1
vote
0answers
429 views

Audio (speaker) jack detection with debian

How to find out whether speaker jack is connected or not in my motherboard Tried out some reference from : Detecting headphone connection/disconnection in Linux pasted my amixer output.Need ...
0
votes
1answer
131 views

How can I record the sound from multible sources with gtk-recordMyDesktop?

I am having problems with sound when I am trying to capture a video. It captures my sound from my mic, but it dosent record the game sounds, skype sounds, vlc sounds, firefox sounds and everything ...
1
vote
0answers
112 views

Xfce sound level applet works wrong

I have installed Xfce4 on Debian testing. I'm using ALSA for sound driver. If I decrease volume level by using sound control applet in Xfce panel, there is no problem till "zero level". If I decrease ...
2
votes
1answer
177 views

Which Linux distro supports h264/avc, aac and mp3 out of the box?

That is, after installing (or live boot) I want to be able to access h264-aac videos and mp3 audio that I have saved, WITHOUT INTERNET connection, that is installing after OS-install from a repo on ...
2
votes
2answers
1k views

Muting and unmuting sound with mutebutton

I'm running the testing branch of debian with codename Jessie and xfce as desktop environment on a Lenovo ThinkPad T410. When I press the mute-button, it mutes pulse-audio and alsa, but when I press ...
1
vote
1answer
119 views

how to fix default sound device for a user

when I "play" (with SoX) a .wav file using my own account on Debian it plays fine: jcomeau@aspire:~$ play ~petalumarentals/7077809525.1396808357.711.wav ...
5
votes
3answers
1k views

how to understand list of soundcards; meaning of MID, HDMI, PCH

Command aplay -l produces a list of "all soundcards and digital audio devices". On my brand-new Fujitsu Esprimo desktop, I get: **** List of PLAYBACK Hardware Devices **** card 0: MID [HDA Intel ...
1
vote
0answers
337 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 ...
0
votes
1answer
300 views

Generate .asoundrc

Is there any way to generate .asoundrc? I know that by default this file does not exist and system generates one on the go like Xorg does. But is there any way to see how the content will look like?
2
votes
0answers
590 views

Extremely loud crack and mangled sound over S/PDIF using ALSA

Sometimes it seems ALSA on my machine goes completely haywire: Flash audio on Spotify doesn't produce any sound. SMplayer plays audio just fine, or doesn't play at all (I've observed the latter ...
0
votes
0answers
87 views

My computer beeps while copying files

Whenever I create disk activity on my memory stick, my headphones create very annoying beeps at various notes. It doesn't happen with my in built speakers, and it hasn't happened before. I'm on Ubuntu ...
2
votes
0answers
72 views

Trying to record from the default audio source

I am trying to record the sound output, but this looks more complicated than expected. I expected that arecord -f cd -t wav --max-file-time 3600 --use-strftime %Y/%m/%d/listen-%H-%M-%v.wav would ...
3
votes
1answer
280 views

What is the modern equivalent of reading `/dev/audio`?

Recently my trusty home PC died after 10 years. The ensuing upgrade (from SuSE 10 to OpenSuSE 12.3) was something of a culture shock for me - none of the convenient shortcuts and utilities I had ...
0
votes
0answers
313 views

Delay in playing(recording?) real time raw audio. [OpenWrt, Debian]

I'm developing OpenWrt device which sends audio data to network but I have issues in the early beginning. I'm trying to find which cause delay in playing (or maybe recording, but more probably ...
1
vote
1answer
364 views

Audio cuts in and out after upgrading from Ubuntu 12.10 -> 13.10

So my audio was working perfectly fine (XBMC, VLC, Flash in Chrome, etc) before the upgrade. Now that I've upgraded, I can still play audio, but it plays for a second or two at a time before cutting ...
2
votes
2answers
164 views

How can I run setfacl -m group:group2:rwx /dev/video0 /dev/snd/* on login?

Q: How do I grant permissions to /dev/video* and /dev/snd/* to a second user, user2 when logged in interactively as user1? I have written a wrapper for sudo that clones the XAuthority settings, and ...
1
vote
0answers
41 views

How can I send data from sound input to output (e.g. linear input/output)? Preferably with pulseaudio

Need to get data from audio input, make some changes (a pulseaudio module for this conversion is available), and send data for output. How I can make do this? "Redirect" raises questions but I can't ...
1
vote
0answers
195 views

Debian jessie Logitech G35 microphone not working

I'm on Debian jessie with KDE. I have a Logitech G35 headset and even managed to enable surround sound. Now I noticed that the microphone isn't muted. I'm pretty sure that it is not muted and set as ...
3
votes
2answers
138 views

Where do sound drivers live? [closed]

A little while ago I searched for a good driver for my sound card (with surround sound support) and didn't find any. So it seems there is none. I thought I could try (even though I think nothing ...
0
votes
1answer
94 views

Opening ALSA Microphone in two programs?

I'm using a raspberry pi to capture some audio, but I only want it to do it when the noise level goes above a certain level, and then the device will record until two seconds after it falls below that ...
2
votes
2answers
172 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
426 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
2answers
187 views

free video editing software for Linux with audio tracks auto matching

I have a few video files which basically cover the same action from different perspectives. I would like to merge them into one "split-screen" kind of video (two or four panes). The problem is videos ...
36
votes
1answer
4k 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 ...
2
votes
3answers
5k views

How to remote Linux desktop with audio support

I have a Debian PC (Server) and I would like to remote this machine from one client (Windows, Ubuntu,..) and be able to hear the sound from the server. I tried some tools (Radmin, RealVNC, but I ...
2
votes
1answer
225 views

Setting maximum volume

I usually work in a WM (i.e., i3wm) and use alsamixer to adjust sound volume. The recent Linux installation on a Dell t5500 machine gives a very loud sound when set the maximum volume in alsamixer. ...
0
votes
0answers
555 views

Auto-detect headphone jack

I am using ALSA on Arch Linux on a MacBook Air 5,2 (mid 2012). This is my first time using alsa by itself (without any tools that come with gnome), so I may have not configured something in order to ...
1
vote
2answers
1k 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 ...
8
votes
3answers
6k views

Microphone - static background noise suppression on Linux

My soundcard is Realtek ALC 892. On Windows 7 I use official Realtek drivers, on Linux I use PulseAudio (on Ubuntu 13.10). On both Windows and Linux, when I enable microphone boost +30db (required ...
1
vote
1answer
33 views

Utility to tag regions of audio files

For example, say I have a recording with lots of noise and people speaking, I'd like to tag areas where people are speaking with a 1, and by default everywhere else is 0. Then save this file ...
0
votes
1answer
123 views

Digital audio between Intel Atom E640 and ADAU1445

Background information: I have a ADAU1445 DSP from Analog Devices connected to multiple audio sources through the Serial Input pairs. One of these sources is an Intel Atom E640 processor running ...