SoX
SoX - Sound eXchange is a cross platform command line tool for converting and editing audio files.
Installation
SoX is available in the termux repositories. To install it, just type
pkg install sox and press enter.
Configuration
To enable recording from the microphone or standard input add following line in $PREFIX/etc/pulse/default.pa
load-module module-sles-source
Usage
Conversion
sox input.wav output.mp3
Playback
play audio.wav
Recording
rec audio.wav trim 0 00:10
More examples
Normalize an audio file (adjust volume to the maximum peak level, without clipping):
sox --norm input\_audiofile output\_audiofile
Alternative:
sox input\_audiofile output\_audiofile norm
The standard bitrate for conversion to mp3 is 64 kbit per channel.