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

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6
votes
0answers
220 views

Auto-switching PulseAudio profiles based on input(s) channel count

I'm running audio over HDMI to my receiver, which has a full 7.1 setup connected to it. However, most of the stuff that I listen to has far fewer channels—some is mono, most is stereo, a bit is 5.1. ...
4
votes
0answers
53 views

Default input device sox

I'm trying to configure sox to use a webcam that I just ordered. I've confirmed that the mic works through the GUI. I ran arecord -l and found that the card, device numbers are 1 and 0, respectively. ...
4
votes
0answers
144 views

Restricting sound control

I need to restrict users so that they cannot output sound from built-in speakers. They should plug their headphones to hear any sound. They should be able to control headphone volume level, but not ...
3
votes
0answers
82 views

Multiple (combine) USB sound cards with Alsa + Jack + Pure Data

I'm a musician and I'm new to PI/Raspbian/Linux. I'm using a Raspberry PI 2 with Pure Data (PD) for a multichannel audio installation. I have one 5.1 USB soundcard (6 channels) but for my installation ...
3
votes
0answers
56 views

Linux: can't open /dev/dsp

I am getting an error while running festival on my system: linux: can,t open /dev/dsp I was searching for this error on the Internet and found this instruction: To solve this problem just write ...
3
votes
0answers
28 views

Directing sound output for specific applications

I'm trying to direct the sound from Youtube running in Opera to my sound card's HDMI output (to a TV), but still have all other OS sounds go to my PC's "Built-in Audio Analog Stereo" playback device. ...
3
votes
0answers
42 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 ...
3
votes
0answers
133 views

Sound output not working properly in chroot

So I have a 64-bit Linux Mint 17 system and I am trying to set up a chroot environment with a 64-bit Ubuntu 12.04-based system (actually something called Vinux, an Ubuntu remix). The problem is that ...
3
votes
0answers
74 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.
3
votes
0answers
44 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 ...
3
votes
0answers
241 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 ...
3
votes
0answers
246 views

Change output voice frequency

My friend can not hear all voice frequencies. I need software that brings all frequency spectrums to a specific band. Is there any software to help me do this? I mean change all output sound ...
3
votes
0answers
110 views

How can I have pulseaudio always load a USB soundcard as the same sink every time I boot?

I have 9 identical soundcards connected via USB to a PC running various audio rendering servers. Each card is loaded in /etc/pulse/default.pa by disabling module-udev-dectect and manually loading ...
3
votes
0answers
119 views

How to stream audio from /dev/dsp?

What is the best way to stream audio from /dev/dsp (I'm using OSS on Debian). I would prefer HTTP streaming, but if there is a way on another protocol, I can deal with that.
3
votes
0answers
589 views

How do you redirect audio output in FreeRDP?

I have trouble redirecting audio during my rdp connection with freerdp. When I use this command: xfreerdp /v:ServerName /u:User /p:Password /d:Domain /audio I get this error: Warning ...
3
votes
0answers
95 views

Cannot “resume” music

I've had the following issue across multiple music players and multiple distro's. Currently I am experiencing it in Rhythmbox on Arch Linux. Whenever I play music and then pause a track I am unable ...
3
votes
0answers
165 views

Play sound when suspending and resuming

I'm trying to get my sound theme all working how I want it. Reading the sound naming spec by freedesktop, it has an entry "suspend-start" and "suspend-end", which is supposed to fire when the ...
3
votes
0answers
673 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. ...
3
votes
0answers
756 views

How to set up AMD Cayman/Antilles HDMI Audio (Radeon HD 6900 series)?

I've got an AMD Radeon HD 6950 card: $ lspci | grep AMD 03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cayman PRO [Radeon HD 6950] 03:00.1 Audio device: Advanced Micro ...
3
votes
0answers
757 views

Why does skype not pick up my microphone?

I've got skype running (32 bit mode) on Slackware64 — the sound is fine but my mic is not able to be detected. KMIX shows that my mic is enabled, and I can hear myself when I test it. Some ...
3
votes
0answers
131 views

Allow audio from only one application

I'd like to only allow audio from a certain application. That is, I'd like to have audio turned off by default for new programs. I'm aware that in PulseAudio one can mute programs, but the problem ...
3
votes
0answers
778 views

Using Creative Sound Blaster on Ubuntu Server

I just got a Creative Sound Blaster for playing audio wirelessly. I connected it to a virtual version of Ubuntu desktop and just had to go into the sound settings and switch it to the USB and the ...
3
votes
0answers
956 views

No sound in webex player in wine

I am using Fedora Core 10. I have installed wine with both wine-alsa and wine-oss sound drivers. I am able to hear test sounds by running winecfg, but when I run the webex player there is no sound, ...
2
votes
0answers
16 views

Microphone noise reduction

I installed Ubuntu 14.04 with dualboot. But i have problem with microphone noise. I can not find any noise reduction in Ubuntu. Sound quality is for me quite important, because i am talking with ...
2
votes
0answers
39 views

alsa sound module snd_aloop

I am having some trouble wrapping my head around the snd_aloop module. I am trying to route all my audio through alsa without using pulseaudio. If I start jackd there's not sound from non alsa apps ...
2
votes
0answers
46 views

Linux USB audio volume problem

I have a dual boot Linux/Windows 8 system with a pair of KEF X300A speakers connected to the machine via a USB port. After each reboot from Windows the maximum volume obtainable from the speakers in ...
2
votes
0answers
32 views

Background service to play CDs without being logged in

Before I reinvent wheel, is there currently a background service that can detect when a CD is inserted and if it is an audio CD, mount it and execute a command to play it without being logged in. ...
2
votes
0answers
120 views

Linux sound: play back audio from input only on specific output device

I currently have a shairport (AirPlay) server which receives audio data and outputs it over optical SP/DIF (Toslink) via a USB-to-Toslink adapter. This digital signal goes through an equalizer, and ...
2
votes
0answers
142 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
27 views

possible to adjust volume on my laptop up or down without having to log in?

Is there any way to adjust the output volume of my speakers with the physical buttons on the keyboard without having to log in ? If my screen is locked and an annoying song starts to play, I need ...
2
votes
0answers
76 views

Choppy audio playback

I experience choppy audio playback just like when one hits an old CD player while it's playing back a CD. The audio skips back maybe about 200-500ms. I experience this behavior using any sources like ...
2
votes
0answers
32 views

How to dynamically control the audio volume based on current decibels

Since the Internet videos have different sound volume levels I am wondering is there a way to dynamically decrease the audio volume if it's above certain decibels to a normal value. Could someone ...
2
votes
0answers
246 views

Sound Problem in ubuntu startup

When Ubuntu boots first time, no sound comes out of speakers. But when I insert any headphone the sound is OK. also when I insert headphone first time and eject it from laptop then sound comes fine ...
2
votes
0answers
115 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
0answers
31 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 ...
2
votes
0answers
141 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 ...
2
votes
0answers
455 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.
2
votes
0answers
142 views

Is there simple applet mixer for pulseaudio

With new openSUSE 13.2 I find huge problem with sound -- with ALSA I lost the line out, and besides the sound was too quiet in general (today max out, is yesterday half). With help of pulseaudio ...
2
votes
0answers
77 views

PC speaker device missing

I've just connected a small internal PC speaker to my motherboard. The beep command is producing sounds correctly. The pcspkr is loaded but there is no /dev/pcsp, so I cannot send audio to it. How ...
2
votes
0answers
348 views

Why don't I hear audio playing from my CentOS 6.5 Vagrant box?

I want to play a wave file from my CentOS 6.5 Vagrant box using aplay and of course I want to hear the sound. This is what I do: > aplay sine.wav Playing WAVE 'sine.wav' : Signed 16 bit Little ...
2
votes
0answers
323 views

Disable HDMI Audio Output if it is not plugged in

I am using Fedora 20 on a Dell Precision M3800. When i'm in the office, i wanna use my Bluetooth Headphones. When i'm at home, i'm using often my Sony TV as my second Display(via HDMI). When i'm at ...
2
votes
0answers
441 views

Android w/ Glibc stack, how can I set-up audio w/ nvlc? Is it possible with ALSA(Debian)?

With the help of the book "Embedded Android" by Karim Yaghmour I managed to learn enough about Android's build process last fall. With enough fiddling around and Google'ing I learned a sufficient ...
2
votes
0answers
135 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 ...
2
votes
0answers
479 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 ...
2
votes
0answers
723 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 ...
2
votes
0answers
92 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 ...
2
votes
0answers
2k views

CentOS 6.5 sound permissions

I am trying to configure ALSA for a CentOS 6.5 minimal install, my problem is non-root users do not have permission to access the sound devices in /dev/snd because the files are missing access control ...
2
votes
0answers
253 views

Lock all devices when adjusting pulseaudio volume in kmix

My problem is that kmix adjusts the volumes of not all devices locked together. Adjusting built-in analog stereo also adjusts application's equalized stream and ALSA plugin. But webcam and event ...
2
votes
0answers
204 views

Switching output sink/moving audio streams - but some apps still use the old sink!

I'd like to easily switch between a usb-connected amplifier/dac and my onboard audio. I'm using a fully updated Arch Linux x64 with PulseAudio 4.0-2. Another thread on this board is about switching ...
2
votes
0answers
2k views

Problems with sound in Linux Mint 15 on video

Problem: I think you'll enjoy this fun problem. I set-up a dev/media server. Steps to reproduce: Start up any video file (with Banshee or VLC or xfce player - doesn't matter) -- all is well. Sound ...