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Audio.

Contents

Sound in Debian.

Test speaker and microphone.

To configure audio devices:

$ alsamixer
$ pavucontrol

To hier voice from mic in speaker:

$ arecord | aplay
$ arecord -f cd | aplay -f cd

To list of available devices:

$ aplay -l
$ aplay -L
$ arecord -l
$ arecord -L

$ pactl list

Play simple sounds.

$ sudo apt-get install sox
$ play -n synth sin 440 vol -40dB
$ play -n synth 10 square 100-10000 synth sin fmod 100 vol -40dB

Check HDA params.

$ sudo apt-get install alsa-tools-gui
$ hdajackretask

See also:

http://www.alsa-project.org/main/index.php/HDA_Analyzer
provides a graphical interface to access the raw HD-audio control

Suitable convertors?

$ sudo apt-get install ffmpeg

or:

$ sudo apt-get install sox

List of sox supported format: See sox(1).

List of ffmpeg supported format:

$ ffmpeg -formats

How convert amr to ogg/mp3?

TODO

How easy convert between mp3/wav/ogg?

$ sox in.mp3 out.ogg
$ sox in.ogg out.wav
... etc

How convert flac to mp3?

$ flac -c -d $file.flac | lame -m j -q 0 -V 0 -s 44.1 - $file.mp3

How convert wma to mp3?

$ mplayer -vo null -vc dummy -af resample=44100 -ao pcm:waveheader $file.wma
$ lame -m s audiodump.wav -o "$file.mp3
$ rm audiodump.wav

How convert m4a to mp3?

$ faad -o - $file.m4a | lame -V 0 - $file.mp3

How split mp3/ogg files?

Split mp3 and ogg files:

$ mp3splt

See:

http://mp3splt.sourceforge.net/mp3splt_page/home.php
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