play_sample (3) - Linux Man Pages
play_sample: Plays a sample. Allegro game programming library.
NAMEplay_sample - Plays a sample. Allegro game programming library.
DESCRIPTIONTriggers a sample at the specified volume, pan position, and frequency. The parameters `vol' and `pan' range from 0 (min/left) to 255 (max/right). Frequency is relative rather than absolute: 1000 represents the frequency that the sample was recorded at, 2000 is twice this, etc. If `loop' is not zero, the sample will repeat until you call stop_sample(), and can be manipulated while it is playing by calling adjust_sample(). Example:
/* Scream from the left speaker, twice the freq. */ int sound = play_sample(scream, 255, 0, 2000, 0);