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Implement authentic TR-808/909 synthesis based on DSP research#28

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feat/dsp-drum-synthesis-5317477939335790594
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Implement authentic TR-808/909 synthesis based on DSP research#28
Pitrat-wav wants to merge 1 commit intomainfrom
feat/dsp-drum-synthesis-5317477939335790594

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@Pitrat-wav
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Refactored the drum machine synthesis logic to strictly follow analog emulation principles from the provided DSP analysis. Key changes include:

  • TR-808 Kick: Bridged-T emulation with 2.5x pitch sweep.
  • TR-909 Kick: Triangle body with 4.7x pitch sweep and tanh soft-clipping.
  • TR-808 Snare: Dual resonance modes at 238Hz and 476Hz.
  • TR-909 Snare: Dual triangle oscillators with pitch sweep and Tone-controlled LPF.
  • TR-808 Hi-Hats: Exact 6-oscillator Schmitt trigger matrix with dual BPF.
  • Master Bus: Introduced a centralized Compressor and research-derived tanh WaveShaper for 'glue' effect.

PR created automatically by Jules for task 5317477939335790594 started by @Pitrat-wav

- Refactored TR-808/909 Kick, Snare, and Hi-Hat synthesis to follow DSP research.
- Implemented exact frequency ratios and pitch sweep curves.
- Added master bus compression and tanh-based soft-clipping 'glue' effect.
- Optimized performance by pre-calculating distortion curves and noise buffers.

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