SynthSnare — Snare Drum Engine

Files

static/js/synth/engines/snare.js

Signal Path

                        ┌──→ sine ──→ slamGain ──→ noteGain ──┐
body mix ──→ waveDefs ──┼──→ triangle ──→ slamGain ──→ noteGain ──┤
                        └──→ saw ──→ slamGain ──→ noteGain ──→ chain.input
                                                                     │
snareMix ──→ noiseBuf ──→ bandpass ──→ ng ──→ noteGain ─────────────┤
                                                                     │
crack ──→ noiseBuf ──→ cg ──→ noteGain ─────────────────────────────┘
                                                                     │
                                               filter → distortion → EQ → compressor → clarity → limiter → masterGain

Modules

ID	Type	Description
Pitch	source	Body frequency + slam envelope
Transient	source	Snare noise + crack parameters
Filter	processor	Low-pass (bypassed at 20000)
Distortion	distortion	Waveshaper pipeline
EQ	source	3-band (skipped by backward loop)
Compressor	processor	Dynamics compressor
Clarity	processor	Mud/air reduction
Volume	master	ADSR envelope (handled by engine.js schedule)
Normalize	builtin	Peak normalization

Parameters

Param	Range	Default	Description
bodyFreq	100–400 Hz	220 Hz	Body oscillator start frequency
bodySlam	0–1	0.5	Frequency slam amount
bodyDecay	0.03–0.5	0.15	Body decay time
bodyMix	0–1	0.7	Body level mix
sineLevel	0–1	0.4	Sine oscillator level
triangleLevel	0–1	0.3	Triangle oscillator level
sawtoothLevel	0–1	0	Sawtooth oscillator level
snareMix	0–1	0.5	Snare buzz level
snareDecay	0.01–0.5	0.15	Snare buzz decay
crackAmount	0–1	0.2	Crack noise amount
crackDecay	0.003–0.08	0.03	Crack decay time
buzzFreq	2000–8000 Hz	3500 Hz	Bandpass centre for snare buzz
buzzQ	0.5–20	1	Bandpass resonance
buzzSweep	0–1	0.3	Frequency sweep amount
filterCut	200–20000 Hz	20000	Low-pass filter cutoff
clarity*	—	—	See clarity module docs
compThreshold	–60–0 dB	–24 dB	Compressor threshold
compRatio	1–20	4	Compressor ratio
volAttack	0.001–0.1 s	0.002	Volume attack
volDecay	0.05–0.8 s	0.3	Volume decay
volSustain	0–0.5	0.05	Volume sustain level
volRelease	0.005–0.5 s	0.05	Volume release

buildLiveChain

Uses the unified backward loop. Processors are wired automatically from the modules array. chain.input is the first processor's input — trigger() connects per-note sources here.

trigger

Creates per-note noteGain with AD envelope, then creates: - Body oscillator(s) with frequency slam curve - Snare noise through bandpass filter with frequency sweep - Crack noise burst

All sources connect to noteGain which feeds chain.input.