[macOS 15.6.1 CoreAudio Ardour]

[lcoogan]

Sound is working for other things in Ardour, but not PluginCollider. I see the volume meter go up, but no sound.

Here's the SynthDef being used to produce the scsyndef:

(
// Generate a terrain table
~terrain = Buffer.alloc(s, 1024, 1);
~terrain.sine1([1, 0.3, 0.3, 0.2, 0.1], true);

SynthDef("fm_pulsar_terrain", {
	arg a, e, f, d;
	var t, overlap, carfreq, modfreq, mInd, vel, vel_, tblPos, sig;

	f = \freq.kr(100);

	vel = \kel.kr(0.5);
	vel_ = vel.clip(0,1.0).linlin( 0, 1, 2, 0.7);

	e = EnvGen.kr(
		Env.adsr(
			\att.kr(0.025) * vel_,
			\dec.kr(0.02) * vel_,
			\susl.kr(0.7),
			\rel.kr(4),
			curve: \curve.kr(-4)
		),
		gate: \gate.kr(1),
		doneAction:2
	) * vel;

	carfreq = f * \cf.kr(2) + LFNoise1.kr(3).range(0,50);
	modfreq = carfreq * \mf.kr(2) + LFNoise1.kr(3).range(0,100);

	t = Impulse.ar(f);

	mInd = e.pow(3.3); // use envelope shape to shift table pos
	overlap = 1.1 - e.pow(0.5);
	d = overlap / f;

	// convert modfreq to index between 0 and 1 for VOsc
	tblPos = modfreq.linlin(0, 8000, 0, 1).wrap(0, 1); // safer than clip for edge cases

	a = Mix([
		SinOsc.ar(f),
		// GrainBuf.ar(1, t, d, ~terrain, tblPos, carfreq, 0, 2)
		GrainBuf.ar(1, t, d, ~terrain, tblPos, carfreq);
		// GrainBuf.ar(numChannels:1, trigger:0, dur:1, ~terrain, rate:1, pos:0, interp:2)
	]);

	a = LeakDC.ar(a * e);

	a = FreeVerb.ar(a, 0.33, 1);

	Out.ar(\outBus.kr(0), a.dup * \gain.kr(0.1));

}).store;


// Synth(\fm_pulsar_terrain);
)

Here's the logs:

Server listening to port 8898
*************** SuperCollider booting ***************
SC_PLUGIN_PATH is ignored since PluginCollider is compiled with SC static plugins
Loading synthdefs from default path: /Users/lcoogan/Library/Application Support/SuperCollider/synthdefs
exception in GraphDef_Load: UGen 'AY' not installed.
while reading file: '/Users/lcoogan/Library/Application Support/SuperCollider/synthdefs/ay1.scsyndef'SC_AudioDriver: sample rate = 48000.000000, driver's block size = 1024
WorldOptions: BufLength(1024) MaxWireBufs(64) RealTimeMemorySize(8192) mNumInputBusChannels(2) mNumOutputBusChannels(2)
*************** SuperCollider boot success ***************
Rebuilding node tree
*************** SuperCollider booting ***************
SC_PLUGIN_PATH is ignored since PluginCollider is compiled with SC static plugins
Loading synthdefs from default path: /Users/lcoogan/Library/Application Support/SuperCollider/synthdefs
exception in GraphDef_Load: UGen 'AY' not installed.
while reading file: '/Users/lcoogan/Library/Application Support/SuperCollider/synthdefs/ay1.scsyndef'SC_AudioDriver: sample rate = 48000.000000, driver's block size = 1024
WorldOptions: BufLength(1024) MaxWireBufs(64) RealTimeMemorySize(8192) mNumInputBusChannels(0) mNumOutputBusChannels(0)
*************** SuperCollider boot success ***************
Rebuilding node tree
// After adding scsyndef
Rebuilding node tree

No errors after adding the scsyndef.

Going to try packaging for nixOS.

[lcoogan]

Where to start on debugging this?

[asb2m10]

You add the Synthdef as a FX node or a Midi node ? You are probably running your Synthdef as an FX and it generates a low 100hz freq by default, that's why you see the volume. If you see the synthdef parameters, you should be able to set the freq to 2000 ; now it will be audible.

[lcoogan]

You seem to be right, but then I don't know how I'm supposed to add it it in ardour.

PluginCollider doesn't show up as an instrument option. Only in the mix tab does it show up.

[asb2m10]

PluginCollider is not detected as a synth. You have to create an empty midi track, then add PluginCollider as an effect. The midi should be routed to the plugin (as we see the red line routing in your first screenshot). You might need to disable the "Strict IO"...