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Implement high-fidelity drum synthesis based on DSP research#41

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drum-synthesis-refinement-14983045413872599948
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Implement high-fidelity drum synthesis based on DSP research#41
Pitrat-wav wants to merge 1 commit intomainfrom
drum-synthesis-refinement-14983045413872599948

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@Pitrat-wav
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I have implemented a comprehensive refinement of the drum synthesis engine based on the provided DSP research.

Key improvements include:

  1. Procedural Refinement: Updated TR-808 and TR-909 models (Kick, Snare, Hi-Hat, Clap) to include micro-randomization on every hit, simulating analog drift (pitch, phase, filter cutoff, and decay duration).
  2. Velocity Scaling: All synthesized models now respond to velocity, scaling both tonal and noise components.
  3. Master 'Glue' Routing: Connected individual drum outputs to a centralized Compressor and WaveShaper chain in the DrumMachine to achieve the cohesive, saturated sound characteristic of classic hardware.
  4. Research Alignment: Adjusted pitch sweep ratios and durations (e.g., 2.5x for 808 Kick, 4.7x for 909 Kick, and 2.0x for 909 Snare over 30ms) to match the physical circuit analysis.
  5. Immediate Playability: Updated the default store state to feature a 'drum party' Euclidean configuration using the 909 kit.

All changes have been verified for architectural integrity and type-safety.


PR created automatically by Jules for task 14983045413872599948 started by @Pitrat-wav

- Refine TR-808 and TR-909 drum models with micro-randomization (pitch drift, filter variance, decay jitter) and velocity scaling.
- Implement master compressor/waveshaper 'glue' routing in DrumMachine for analog-style saturation.
- Configure default Euclidean patterns (Kick 16/4, Snare 16/2 rot 4, Hi-Hat 16/12) and set TR-909 as the default kit for an immediate high-quality experience.
- Ensure DSP accuracy with 0.001 exponential ramp floors and research-backed pitch sweep durations (e.g., 30ms for 909 Snare).

Co-authored-by: Pitrat-wav <255843145+Pitrat-wav@users.noreply.github.com>
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