al_fill_silence - Man Page

#include <allegro5/allegro_audio.h>

void al_fill_silence(void *buf, unsigned int samples,
   ALLEGRO_AUDIO_DEPTH depth, ALLEGRO_CHANNEL_CONF chan_conf)

Fill a buffer with silence, for the given format and channel configuration. The buffer must have enough space for the given number of samples, and be properly aligned.

5.1.8