/* Ambient-friendly modulable buffer granulator */
SynthDef(\grainoo, { |buf, gate=1|
	var sig, env, trig, pos, rate;

	// nonzero attack
	env = EnvGen.ar(Env.asr(\attack.kr(0.05), 1.0, \release.kr(3.0)), gate, doneAction: 2);

	trig = Impulse.kr(\trig_rate.kr(18));

	// Smooth discontinuous control changes
	pos  = Lag.kr(\gpos.kr(0.2), \posLag.kr(0.25));
	rate = Lag.kr(\rate.kr(1.0), \rateLag.kr(0.25));

	sig = GrainBuf.ar(
		numChannels: 2,
		trigger: trig,
		dur: \gdur.kr(0.18),
		sndbuf: buf,
		rate: rate,
		pos: pos,
		pan: \gpan.kr(0)
	);

	sig = BLowPass4.ar(sig, \ff.kr(3800), \rq.kr(0.9));
	sig = LPF.ar(sig, \aircut.kr(6500));
	sig = HPF.ar(sig, 25);
	sig = LeakDC.ar(sig);

	sig = sig * env * \amp.kr(0.2);
	sig = Limiter.ar(sig, 0.98);

	Out.ar(\out.kr(0), sig);
}).add;