I am currently learning the audio domain of android OS with qualcomm chipsets. I have come across mixer_paths.xml file. I have been trying to understand the convention of writing and modifying the ...

I installed Android on Virtualbox, I'm using Android x86 downloaded from http://www.android-x86.org/download I chose version 2.3 the eeepc version (android-x86-2.3-RC1-eeepc.iso). The problem is t...

I'm looking for some help in configuring the audio on a Raspberry Pi as all my Googling efforts have fallen short so far! My setup: Raspberry PI 3 (running Debian Jessie) USB WebCam (Logitech) w...

I'm doing a program using portaudio, but once i run it i get these problems (the program compiles and run, but I suspect it doesn't behave the way it should because of these problems). Any ideas ho...

i am working on speech recognition . for this i am using "alsa-utils" but when i try to use this script #!/bin/bash echo “Recording… Press Ctrl+C to Stop.” arecord -D plughw:1,0 -q -f cd -t wav...

I'm planning to implement a "DSP-like" signal processor in Python. It should capture small fragments of audio via ALSA, process them, then play them back via ALSA. To get things started, I wrote t...

I'm running PyAudio under Python 2.6.6 and would like it to use ALSA and not JACK. In [1]: import pyaudio In [2]: pa = pyaudio.pa In [3]: pa.initialize() Cannot connect to server socket err = No...

I have already some time a problem with audio in Arch Linux. Here it goes: When I plug my headphones in at boot Arch will play all audio through my headphones, when I plug them out there is just n...

I am New to audio programming.I want to create small application which is capable of playing and gives volume control . I am using alsa-lib. I want to know what is the purpose of switch (ex.Maste...

I have a working PCM output with good sounding audio on a Raspberry Pi compute module ( Linux ) using the rpi dac. The 'aplay -l' command output shows the following: >> aplay -l **** List of...

I'm trying to implement audio capturing on a SoC using ALSA library. I've a precompiled libasound.so.2.0.0 a asoundlib.h together with other headers. now I have int returnCode; snd_pcm_t *pcm_Han...

I am attempting to include specific header files in a yocto build that are found in dev packages. The packages are boost and alsa. I have included the bitbake recipe files into my image recipe whi...

I need to send audio from a radio to a secondary system using an embedded linux system. The secondary system needs to set up a communication channel which takes a few seconds. So if I don't want ...

I am attempting to transfer some old Video 8 tapes to my computer, though an EasyCap USB stick and the motherboard's sound line-in, on Ubuntu. I believe the arguments are correctly laid out below t...

I have 2 Raspberry Pis and 1 of them transmits UDP frames of Audio data to the other Raspberry Pi. The UDP Packets received are 160 Bytes each. The transmitting Raspberry Pi is sending 8KHz 8-bit M...

I'm trying to set one device for playback and another one for capture, my nano /etc/asound.conf has this: pcm.!default { type asym playback.pcm "plughw:1,1" capture.pcm "plughw:1,0" } ctl.!def...

Good day, I have been debating some details with a colleague about ALSA vs PulseAudio, and need some help coming to a conclusion with it. It's to my understanding that ALSA is relatively low-level...

Trying to learn the ALSA audio layers to eventually write an ALSA device driver for the Raspberry Pi platform. Starting simple, I glued together various samples from the ALSA project site and other...

I'm writing a program that reads from two mono ALSA devices and writes them to one stereo ALSA device. I use three threads and ping-pong buffer to manage them. Two reading threads and one writing ...

Can someone explain how snd_pcm_writei snd_pcm_sframes_t snd_pcm_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size) works? I have used it like so: for (int i = 0; i < 1; i+...

I've been trying to look into using the OpenSL ES library that is available for doing native audio with android 2.3, but it appears that the header files and the 600 page pdf of the spec are the on...

I'm using ALSA for and audio application on Linux, I found great docs explain how to use it : 1 and this one. although I have some issues to understand this part of the setup : /* Set number of ...

In latest Android releases, the AOSP release typically comes with tinyALSA and tinyCompress. In this question, Simon has mentioned that all Nexus devices shall support tinyALSA. My question is why...

I installed ChucK in my Ubuntu 12.0.4 VirtualBox. When I started the miniAudicle Virtual Machine, I got a pop up error message "The Virtual Machine appears to be hanging.......Abort the current s...

I'm using the Java sound API and Java 1.7. I am having difficulty reading from a TargetDataLine quickly enough to keep up with what is being recorded when I run my application on Linux (java versio...