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Upgrade Drum Synthesis to Authentic DSP Models#121

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feat/dsp-drum-synthesis-upgrade-188708286604609330
Open

Upgrade Drum Synthesis to Authentic DSP Models#121
Pitrat-wav wants to merge 1 commit into
mainfrom
feat/dsp-drum-synthesis-upgrade-188708286604609330

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@Pitrat-wav

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This PR upgrades the drum synthesis engine to strictly adhere to the provided DSP research.

Key changes:

  • Shared DSP Utilities: Added generateLFSRNoise (15-bit) and updated applyPitchDrift to use musical cents.
  • 808 Kick: Implemented two-stage amplitude and frequency envelopes to emulate diode damping and membrane hit transients.
  • 909 Snare: Integrated LFSR noise for authentic 'Snappy' texture.
  • Polyphony & Disposal: Added activeVoices tracking for Hi-Hat and Cowbell to ensure proper node disposal and prevent memory leaks.
  • UI/UX: Added a 'Randomize Techno' button to the Drums view and synchronized haptic feedback for downbeats and UI actions.
  • Refactoring: Renamed inconsistent cow volume keys to cowbell and added initial state synchronization in the audio store.

PR created automatically by Jules for task 188708286604609330 started by @Pitrat-wav

- Implemented authentic 15-bit LFSR noise for TR-909 Snare.
- Updated TR-808 Kick with two-stage envelopes for damping and 'tonk' articulation.
- Refactored pitch drift to use cent-based logarithmic frequency deviation.
- Implemented robust `activeVoices` tracking and disposal for metallic instruments.
- Standardized volume keys (cow -> cowbell) across the application.
- Added 'Randomize Techno' feature with haptic feedback.
- Updated default Euclidean patterns to techno foundation.

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

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👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

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