Acid Bass (TBD-03)

A TB-303-style acid bass voice with slide, accent and the squelchy resonant filter that defines the genre.

Available on: Track 7
Built on: Braids macro-oscillator + CTAG diode-ladder filter — 303-style acid voice.

Character

A Braids macro-oscillator provides the tonal source (saw, square, and many other models), driven through a choice of analog-modelled diode-ladder filter variants. A dedicated filter envelope, slide circuit and 303-style accent circuit brighten and punch louder steps.

Parameters

Oscillator

Parameter What it does
shape Braids oscillator model
param_0 / param_1 Model-specific TIMBRE / COLOR controls
p0_amt / p1_amt Envelope modulation into TIMBRE / COLOR
q_scale (see Mono Synth) Pitch-quantize scale

Filter

Parameter What it does
filter_type Selects one of five diode-ladder filter variants
cutoff Filter cutoff frequency
resonance Filter resonance — crank for squelch
envelope Filter-envelope amount
decay_vcf Filter envelope decay
saturation Pre-filter saturation
drive Overdrive into the filter

Amplifier / Performance

Parameter What it does
decay_vca Amplitude envelope decay
slide Portamento between notes
accent Per-step accent on/off
accent_level How much accent brightens / boosts the voice

Program slides using step ties and set accent locks on specific steps to get classic 303 funk. Try each filter_type — they sound noticeably different.

See also

Origin & credits

CTAG’s TBD-03 engine. Combines Mutable Instruments Braids macro-oscillator (Émilie Gillet, MIT) with CTAG’s own analog diode-ladder filter models (filters/ctagDiodeLadderFilter*.hpp) and a 303-style envelope + accent engine by Robert Manzke (GPL 3.0).