diff --git a/synth/config.go b/synth/config.go
index 7636102..ca2c003 100644
--- a/synth/config.go
+++ b/synth/config.go
@@ -6,8 +6,6 @@ const (
 	SampleRate       = 44100                              // D-13: CD quality
 	WindowMs         = 500                                // matches aggregate.DefaultWindowMs
 	SamplesPerWindow = SampleRate * WindowMs / 1000       // 22050
-	NumLayers        = 14
-	GainPerLayer     = 1.0 / float64(NumLayers)           // D-10: ~0.0714
 	WhisperFloor     = 0.03                               // D-08/D-09: 3% of max amplitude
 )