psyn/voice.h

#define VOICE_OSCILLATORS 4

struct voice_t
{
	bool     playing;
	uint8_t  note;
	uint32_t sample;
	uint32_t released;

	double velocity;
	struct osc_t osc[VOICE_OSCILLATORS];

	double last_l;
	double last_r;
};

void voice_run(struct voice_t *voice, uint32_t samples, float *left, float *right);