I have a ubuntu install with pulseaudio default installed. When pulseaudio is running this works: aplay -D hw:2,7 /usr/share/xbmc/sounds/Bursting\ Bubbles/nav.wav But when no pulseaudio daemon is ...

I have a custom layer in project. This gets shared with colleagues. My distro (poky) it uses a older version of alsa. This gets downloaded on initial setup of the build area. I would like to 'rep...

While building my Android source code I get this error cannot find alsa/asoundlib.h I have already installed libasound2-dev. asoundlib.h is present in usr/include/alsa/ folder but still the bu...

I am using ALSA API snd_pcm_drop() to clear the buffers. But when I continue audio later with snd_pcm_prepare(), I can hear part of previous audio which was supposed to be cleared. This happens whe...

Summary of what I am trying to achieve: I'm currently doing some work on a Discord bot. I'm trying to join a voice channel, which is the easy part, and then use the combined audio of the speakers i...

When adding host device (--device /dev/snd) to a Docker container, I sometimes encounter Device or resource busy errors. Example I have reproduced the issue with a minimal example involving audio...

I'm running Ubuntu 12.04 studio on a HP Pavilion dm1 4200sg netbook. It's pretty much a fresh install. I try to start jackd server by running jackd -R -d alsa and it fails with output: JACK se...

I am trying out a solution to an accepted question that demonstrates how to create a beep with PyAudio. Strangely I see quite a lot of errors. Unfortunately I've never sent any audio data programat...

I wrote a little php script to control the volume of my local machine with alsa: <?php # for simplicity and testing it really just executes the command: echo exec('amixer set Master 5%+') . " \...

I would like to modify Android OS (official image from AOSP) to add preprocessing to a normal phone call playback sound. I've already achieved this filtering for app audio playback (by modifying HA...

I use ALSA. I want to prevent PC to suspend while a sound is played. I use this bash code to run a screen locker and a suspend command: # Run a screen locker. #xautolock -time 5 -locker slimlock &...

How can I get the current audio input level of a microphone via a shell command under Ubuntu 12.04 LTS? I checked out amixer to set the volume but could not find a way to get the audio input level...

Here is the minimal C program to reproduce: #include <alsa/asoundlib.h> #include <sys/time.h> int main( void ) { } This will compile with gcc -c -o timealsa.o timealsa.c, but if you...

My sound card is Audigy SE [SB0570]. I want to play the same stereo stream not only on speakers but on headphones too, simultaneously. I try this config on my empty ~/.asoundrc pcm.quad { type ...

I'm attempting to use AudioRecord with AudioSource.VOICE_DOWNLINK on Nexus 5X, Android 7.1 (my own build from AOSP). I'm already past the permissions stage - moved my APK to privileged apps, made ...

There are several "hi-res" timestamping functions in ALSA: snd_pcm_status_get_trigger_htstamp snd_pcm_status_get_audio_htstamp snd_pcm_status_get_driver_htstamp snd_pcm_status_get_htstamp I woul...

This doesn't seem to work at all: cat /dev/urandom > /dev/dsp #from wikipedia.org Is it because of pulseaudio? or I need to do some settings?

I've made custom distribution using buildroot, with hard-flow for ARMv7 processor. Everything is working except.... # arecord -D hw:0,0 -fdat -d 5 test.wav This makes multiple files. Thousands ...

How do you programmatically change volume in Gnome on Ubuntu, either from the command line or an API (Python preferrably)? The only answers I found to similar questions use amixer, which seems to ...

So I'm trying to make my linux server play music sent from my Android phone using bluetooth (the linux machine is the A2DP sink and the phone is the source). What I have done so far is to: instal...

I'm trying to dockerize a text to speech application for sharing the code with other developers, however the issue I am having right now is the docker container cannot find the sound card on my hos...

I have two different streams of PCM samples. Is it possible to somehow mix them and play with ALSA on the same output device? I read it may be possible using the mixer but I'm finding it difficult...

I have written a small Java application for testing purposes that captures sound from a mixer on ubuntu 12.04. The code works fine, I can capture sound from all applications except for anything r...

I purchased a the "Sound Blaster Play! 2" soundcard for my raspberry pi 3. The OS is raspbian jessie. The audio on my raspberry pi works when I run $ aplay /usr/share/sounds/alsa/Front_Center.w...

I'm currently working on a project that requires me to do some sampling with Alsa. I'm trying to configure correctly everything but I'm stuck on how to correctly size my reading. There are two pri...