alsa-utils/README.md

alsa-utils

Advanced Linux Sound Architecture - Utilities

This package contains the command line utilities for the ALSA project. The package can be compiled only with the installed ALSA driver and the ALSA C library (alsa-lib).

Utility	Description
alsaconf	the ALSA driver configurator script
alsa-info	a script to gather information about ALSA subsystem
alsactl	an utility for soundcard settings management
aplay/arecord	an utility for the playback / capture of .wav,.voc,.au files
axfer	an utility to transfer audio data frame (enhancement of aplay)
amixer	a command line mixer
alsamixer	a ncurses mixer
amidi	a utility to send/receive sysex dumps or other MIDI data
iecset	a utility to show/set the IEC958 status bits
speaker-test	a speaker test utility
alsaloop	a software loopback for PCM devices
alsaucm	Use Case Manager utility
alsabat	a sound tester for ALSA sound card driver
alsatplg	ALSA topology compiler

You may give a look for more information about the ALSA project to URL http://www.alsa-project.org.