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Enhance Analog Drum Synthesis DSP#32

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enhance-drum-synthesis-dsp-143199552663027311
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Enhance Analog Drum Synthesis DSP#32
Pitrat-wav wants to merge 1 commit intomainfrom
enhance-drum-synthesis-dsp-143199552663027311

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@Pitrat-wav
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This PR enhances the drum machine's procedural synthesis to better emulate analog hardware (TR-808/909) as per the provided research. It introduces non-linear saturation on the master bus, micro-randomization (analog drift) for every hit, and refined synthesis parameters (e.g., pitch sweeps and filter cutoffs). It also improves routing flexibility for hi-hats.


PR created automatically by Jules for task 143199552663027311 started by @Pitrat-wav

… research

- Added master bus compression and soft-clipping saturation (WaveShaper) to `DrumMachine`.
- Implemented micro-randomization (analog drift) for all drum instruments:
  - Pitch drift (+/- 1-2 Hz) and random oscillator phase.
  - Filter cutoff variance (+/- 2%) and decay time variance (+/- 2%).
- Adjusted TR-909 Snare pitch sweep to 30ms for better authenticity.
- Enabled independent volume control for Open Hi-Hats by routing to a dedicated gain node.
- Ensured proper node disposal and Web Audio API best practices (minimum ramp values of 0.001).

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