super_tone_tx_state_t * super_tone_tx_init(super_tone_tx_state_t *s, super_tone_tx_step_t *tree)
Initialise a supervisory tone generator.
Definition: super_tone_tx.c:130
int super_tone_tx(super_tone_tx_state_t *s, int16_t amp[], int max_samples)
Generate a block of audio samples for a supervisory tone pattern.
Definition: super_tone_tx.c:163