Provided by: allegro5-doc_5.2.3.0-1_all 

NAME
al_create_mixer - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro_audio.h> ALLEGRO_MIXER *al_create_mixer(unsigned int freq, ALLEGRO_AUDIO_DEPTH depth, ALLEGRO_CHANNEL_CONF chan_conf)
DESCRIPTION
Creates a mixer to attach sample instances, audio streams, or other mixers to. It will mix into a buffer at the requested frequency (in Hz) and channel count. The only supported audio depths are ALLEGRO_AUDIO_DEPTH_FLOAT32 and ALLEGRO_AUDIO_DEPTH_INT16 (not yet complete). To actually produce any output, the mixer will have to be attached to a voice. Returns true on success, false on error.
SEE ALSO
al_destroy_mixer(3alleg5), ALLEGRO_AUDIO_DEPTH(3alleg5), ALLEGRO_CHANNEL_CONF(3alleg5)