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TR-808/909 Drum Synthesis DSP Refinement#49

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drum-synthesis-dsp-refinement-10274829256770557649
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TR-808/909 Drum Synthesis DSP Refinement#49
Pitrat-wav wants to merge 1 commit intomainfrom
drum-synthesis-dsp-refinement-10274829256770557649

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@Pitrat-wav
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This PR implements an authentic procedural drum synthesis engine for TR-808 and TR-909 models, following deep DSP analysis of the original analog circuits. Key enhancements include accurate frequency mappings, non-linear saturation, pitch envelope refinements, and full velocity sensitivity for all drum instruments. Default patterns were also updated to provide a musically standard starting point.


PR created automatically by Jules for task 10274829256770557649 started by @Pitrat-wav

- Refined TR-909 Kick with LowPass smoothing filter and variable pitch envelope decay
- Updated TR-808 Snare with average resonance frequencies (180Hz/330Hz)
- Added saturation (tanh) to TR-909 Snare tonal body
- Implemented velocity scaling across all TR-808 and TR-909 drum models
- Configured professional default Euclidean patterns for a 'drum party' experience
- Unified drum machine trigger logic to handle dynamic velocity
- Fixed redundant scaling and initialization issues identified in code review
- Verified via TypeScript compilation and frontend visual checks

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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