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Procedural Drum Synthesis & DSP Refinement#113

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procedural-drums-dsp-refinement-5111040857412909891
Open

Procedural Drum Synthesis & DSP Refinement#113
Pitrat-wav wants to merge 1 commit into
mainfrom
procedural-drums-dsp-refinement-5111040857412909891

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@Pitrat-wav

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This PR implements a deep refinement of the procedural drum machine based on virtual analog synthesis research.

Key technical highlights:

  1. TR-808 Kick Refinement: Implemented a non-linear amplitude envelope that simulates the "diode damping" effect of the original bridged-T network, featuring a rapid 20ms initial decay for enhanced transient punch.
  2. TR-909 Snare Upgrade: Replaced standard white noise with a custom 15-bit Linear Feedback Shift Register (LFSR) noise generator to match the vintage digital texture of the hardware.
  3. Engine Synchronization: Added a syncInternalParams method to the DrumMachine to ensure all internal audio parameters (saturation, kit selection, individual drum settings, and volumes) are perfectly aligned with the React/Zustand store state upon initialization.
  4. Techno Optimization: Updated default Euclidean patterns and added a randomization feature specifically tuned for techno rhythms (e.g., 16/4 Kick, 16/12 Hi-Hats) with Telegram haptic feedback integration.
  5. DSP Utilities: Centralized common synthesis logic in DrumUtils.ts, including soft-clipping saturation and micro-randomization (analog drift).

PR created automatically by Jules for task 5111040857412909891 started by @Pitrat-wav

- Enhanced TR-808 Kick with two-stage amplitude envelope for diode damping emulation.
- Upgraded TR-909 Snare with authentic 15-bit LFSR pseudo-random noise.
- Added `generateLFSRNoise` to DSP utilities.
- Implemented bulk parameter synchronization between UI stores and the audio engine.
- Set default Euclidean patterns to optimized techno values.
- Added 'Randomize Techno' feature with haptic feedback support.
- Standardized volume channel keys for engine-UI parity.

Co-authored-by: Pitrat-wav <255843145+Pitrat-wav@users.noreply.github.com>
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👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

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