0
votes
0answers
7 views

ALSA upmixing/processing conditionally from different numbers of input channels

After a lot of research and experimentation, I was able to get ALSA to upmix stereo to 5.1 surround sound the way I want it. However, my problem is now that I can't properly play mono sources (the ...
0
votes
1answer
40 views

How to create fake sound card on Ubuntu Server 12.04

I want to run 'blender --background --python script.py' on my Ubuntu Server which does not physically have any sound equipment. It turns out that blender requires sound card. I see following error ...
0
votes
0answers
10 views

ALSA from output to input

I need to translate sound from my VLC player right into my microphone input. Maybe I should create some virtual device and.. I don't know what to do.. and my english is not good so it's a real problem ...
1
vote
0answers
16 views

Sound does not work on X-server, works in TTY, Arch Linux w/ALSA

My sound system isn't working when I use the X server. When I use it in a TTY, it works fine. In a TTY, the output of aplay -l: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA ...
1
vote
1answer
32 views

How to use synchronous endpoint of USB audio device?

I want to play the same sound over several USB audio devices in sync. Last time I tried something like this was about 2001 and it was successful -- and the pair of Griffin iMics I used back then still ...
0
votes
0answers
205 views

After updating archlinux, the maximum volume is far too low

I booted my Archlinux PC today and opened Mumble, and found that I couldn't hear anyone, so I opened some music and I couldn't hear that. After turning my volume to the maximum possible level in ...
0
votes
0answers
60 views

Using 5.1 surround to play back 3 independent stereo streams

I built a small home server recently. It runs Ubuntu Server 12.04 and has a sound card (Via VT1708) with 3 audio jacks - which I want to use as 3 independent stereo outputs to play back (potentially ...
0
votes
0answers
19 views

Temporarily disable ALSA soundcard (mic)

I have a Linux application where I'd like to temporarily disable audio input from a specific device. Is this possible to do somehow? The system is running Alsa & pulseaudio. Ideally it I'd like ...
0
votes
1answer
27 views

Automatically switch on speakers when there are Alsa clients

I want to connect a relay to one of the GPIOs of my Raspberry Pi. This relay supplies power to the speakers. I would like my speakers to be on only when there is sound activity. I am looking for ...
1
vote
2answers
126 views

Turning speaker beep off by alsamixer permanently

Debian 7, x64. I can turn off the beep by reducing Speaker bar volume in alsamixer to 0. However, after reboot speaker volume in alsamixer is set to 100% again. How can I turn off speker beep ...
0
votes
0answers
129 views

How can I use a virtual sound card without the hardware?

I'm trying to generate and stream audio+video via aconv to a remote location such as Youtube from a headless linux server, which will then be multicasted out to the internet at large. I have ...
0
votes
0answers
31 views

How can I set setup an audiodelay for the complete audio output in linux?

Can someone tell me how I can setup a delay (0.1s - 0.5s) on the complete audio output on my raspberry pi? I am running the Raspyfi Distro and it's using the alsa sound driver. Thank you very much!
0
votes
0answers
20 views

on pin configuration in ALSA

I seek explanation for a strange behavior: as my codec dump can testify, I have speakers on pin 0x14 and HP on 0x15 (and, possibly, ext MIC at 0x18 and int MIC at 0x19), then why does the command ...
1
vote
0answers
31 views

Java Exclusive MIDI usage workaround?

I'm using a java applet, Jalmus to be specific, that implements MIDI usage. Whenever Jalmus is running, MIDI Input works (Midi Out doesn't but I don't need that) however, when attempting to connect ...
0
votes
1answer
99 views

No sound from headphones. Ubuntu on iMac

I have a fresh ubuntu on iMac. I have managed to set up the sound from the native speakers, however, there is still no sound from the headphones. I have disabled automute in alsamixer, but this didn't ...
1
vote
1answer
185 views

linux mint VIA sound issue

So I installed linux Mint 15 "Olivia" 64 bit on my Mecer W550EU laptop I have HD Audio with a VIA chipset charles-W55xEU charles # lsmod | grep snd snd_hda_codec_hdmi 36913 1 snd_hda_codec_via ...
0
votes
0answers
87 views

What's the proper way to forward audio from i386 executables that use ALSA to an x64 pulse server?

I'm running Kubuntu Raring x64, and I had a program that I was unable to compile under my 64-bit environment but there was an already compiled version (32-bit) available for download (specifically ...
1
vote
1answer
118 views

Set up a virtual capture device using ALSA

I am looking to set up a radio stream on my local network using a Linux box with ALSA. My first idea was to just have it capture the sound output, but this can be annoying for several reasons. (For ...
1
vote
1answer
172 views

Using loopbacks and null-sink cause extreme distortion after 20-30s during ffmpeg recording

I'm trying to record both video, speaker sounds and microphone sounds at the same time. To deal with the audio, I set up two loopbacks (one for microphone, one for speakers): pactl load-module ...
3
votes
1answer
411 views

Microphone not working on Apple Macbook Air 1,1 (Early 2008; A1237) under Linux

I'm running Linux on the MBA. I can't make the microphone work. I test using alsamixer and arecord -Dhw -fdat -vv mic.wav together with aplay -Dhw -vv mic.wav It seems there is a problem with Linux ...
1
vote
1answer
680 views

Alsamixer won't work with bluetooth device

I'm running Debian unstable. My .asoundrc looks like this: pcm.btheadset { type plug slave { pcm { type bluetooth device 5A:5A:5A:A6:08:09 profile ...
0
votes
0answers
58 views

Create a virtual input for ALSA applications using PulseAdio

I need to run an application using Wine. But Wine uses ALSA by default, it still doesn't support PulseAudio. Now: I need to create a virtual sound source for this application, but I have no idea how ...
2
votes
0answers
263 views

Linux noob trying to get headset to work

I am trying to get my headset (Logitech H390) to work on a new linux installation (centos 6.4). Unfortunately I am unable to hear anything from the headset. I have tried several options from the sound ...
1
vote
2answers
2k views

How to make Alsa pick a preferred sound device automatically?

I bought an USB sound card. I'd like to set up my Linux desktop so that it prefers the USB device, if it is plugged in and automatically switches as the device is (un)plugged. Is it possible, and how? ...
1
vote
0answers
79 views

Record line-in audio from two applications using Alsa

Im currently working on an small application which runs on a cubieboard (ARMv7, rasp-pi-like). What I really need to do is, accessing and recording the line-in audio-signal from two different ...
2
votes
1answer
113 views

Reconfigure line-in as analog-out

I am trying to reconfigure my "line in" as another "analog out" and use it alongside with the default analog out port. I am using an onboard realtek sound card. It is very simple to do this in ...
1
vote
3answers
7k views

linux arecord: capture sound card output rather than microphone input

I am trying to capture sound card output and encode it in Vorbis ogg format using the following command: arecord -f cd -t raw | oggenc - -r -o file.ogg However, the computer's microphone input is ...
6
votes
1answer
1k views

Prevent applications to control master volume on Linux

Whenever I change the volume in VLC, Rhythmbox, or a video on YouTube, it change the master volume, i.e. the system volume. How can I prevent this from happening? I'm running Debian 7.0.0 (wheezy) ...
1
vote
3answers
413 views

How do I get a volume OSD just like the one in OSX?

I'm using a Dell Studio laptop which has volume up/down hotkeys. On pressing these, I want a volume OSD to popup to show my current volume status just like in OSX; that is, just like: Anybody know ...
1
vote
3answers
1k views

ALSA - no surround playback with mplayer

When I run: speaker-test -c6 ...everything is fine. I get 5.1 playback. However, when I run: mplayer -channels 6 "some video with 5.1 audio" no audio plays. Here is what appears in the ...
12
votes
1answer
733 views

Linux - Creating Virtual Audio Device

My question here is rather simple. How does one create a purely virtual audio device in ALSA that would be capable of: being used as an audio output destination, being used as an audio input source, ...
1
vote
0answers
211 views

Wine screws up Pulseaudio and USB audio card when already playing ALSA stream

My setup is a Thinkpad T420 with Creative X-Fi USB audio card. Everything usually works fine, I can play multiple streams and arbitrarily move streams from one audio card to another. One use case ...
1
vote
1answer
1k views

Set device when using gst-launch alsasrc

As part of my Sphinx setup, I listen to my input device like this: gst-launch alsasrc (Well, the actual command is this: alsasrc ! audioconvert ! audioresample ! vader name=vad auto-threshold=true ...
0
votes
2answers
434 views

Alsa/PulseAudio mixing output from multiple processes

I wonder is it possible to rig alsa or/and pulseaudio so that audio output to left stereo channel will come form one process and to the right channel from another process?
0
votes
0answers
117 views

MPD fails to start the next song

I am running Arch Linux (e17) on x86_64; with mpd 0.17.3 and ALSA 10.0.26. One update ~three months ago mpd started acting strange. It would not start playing the next song, and it would appear as if ...
0
votes
1answer
142 views

weird alsa problems losing permissions when I plug/unplug usb headset

I have a /etc/udev/rules.d/00-local.rules KERNEL=="pcmC[D0-9cp]*", ACTION=="add", PROGRAM="/bin/sh -c 'K=%k; K=$${K#pcmC}; K=$${K%%D*}; echo defaults.ctl.card $$K > /etc/asound.conf; echo ...
0
votes
1answer
685 views

Getting an ALSA program (ChucK) to work with Pulseaudio?

Moving a previous answer to this topic; formulated as a question, it would be: I'm using ChucK, in particular chuck.alsa, to implement a Command line multitrack audio looper for Linux. ...
2
votes
1answer
141 views

V4L2 and ALSA: Kernel SPI or User API?

I'm trying to understand what Video for linux and ALSA are (exactly), and I can't discern whether they're APIs for Linux application to use (the userspace) or if they are backend services that are ...
-1
votes
2answers
845 views

Raspberry Pi sound

I am trying to configure the linux software festival which converts text to voice on a Raspberry Pi. Before and after the sound is played there is glitch sound that is heard. Does anyone know what ...
1
vote
1answer
2k views

How to address an alsa “mixer_device” in mpd config for a second sound card?

I run mpd on a system with a built in sound card and a second card that I plugged in via USB. Adressing the second sound card in the mpd.conf was easy: change: device "hw:0:0" to device "hw:1" ...
2
votes
1answer
554 views

Debian Bluetooth headphones not working [closed]

Hardware Headphones Bluetooth dongle Maybe not exactly these models. Setup I tried to follow some guides, here's what I've done so far: Install software: sudo apt-get install bluez-utils ...
2
votes
0answers
274 views

How do I use wine's new multi-channel audio support?

Wine supposedly added Multi-channel support to the ALSA driver in a recent release. However, I haven't found any documentation about it or any reports of anyone successfully using it. I have 5.1 ...
2
votes
0answers
770 views

AC3 & DTS Output Produces Buzzing/Noise Using a52 ALSA Plugin in Pulseaudio

Note: I hope this is the right site to ask it on, as I'm using ubuntu 12.04 64bit but assumably this is a general linux/alsa configuration question. I've followed the guide at ...
0
votes
1answer
847 views

List all ALSA devices

I'm using PulseAudio on my system, and I followed the instructions for adding a monitor device as per the PulseAudio wiki. The monitor device itself works and registers/functions properly in apps like ...
1
vote
2answers
1k views

Why can't I play audio from two or more sources?

When I installed on my desktop mpd and mpc, I found that I can't hear other sources (like Amarok, Flash player etc.) at the time when mpc or other client is playing music. If I try to start an audio ...
3
votes
1answer
3k views

How to listen to microphone output on Linux?

I would like to hear the microphone output during Skype calls. I have tried fiddling with alsamixer settings and made sure that the mike is unmuted but still cannot get to hear the mike in either ...
1
vote
0answers
143 views

Amplify alsa capture beyond 100%?

I'm using ALSA. The volume of my mic is so low that even 100% of capture volume is not enough in a skype conversation. Is there any way to amplify the capture volume beyond 100%? I cannot use ...
1
vote
1answer
873 views

How to mix S/PDIF input and PCM Out (to hear PCM and S/PDIF simultaneously) in Linux?

In alsamixer I can select either PCM Out or IEC958 In (that's my S/PDIF input) but not both. Is there a solution? Note: I need stereo sound, so selecting IEC958 In for one channel, and PCM Out for ...
3
votes
3answers
2k views

Pipe System sound to another computer

i have no speakers in my PC(Cent-OS 5.5) but there is a stereo speaker connected to the computer next to my Computer(Cent-OS 5.5). Both computers are networked. Is there any way to pipe my system ...
7
votes
1answer
13k views

How to disable Auto-Mute Mode?

In alsamixer, there is an option called "Auto-Mute Mode", and it's enabled by default. But now I want to disable it. I've tried different keys but failed. Any idea? 0_0