Authentic DSP Drum Synthesis & Randomization#127
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- Added 15-bit LFSR noise generator in DrumUtils for TR-909 digital crunch. - Updated TR909Snare to use authentic LFSR noise. - Implemented state synchronization between UI and Audio Engine. - Added musical Euclidean pattern randomization for a "Drum Party" experience. - Refined Web Audio node disposal in Hi-Hat and Cowbell to prevent memory leaks. - Integrated randomization UI with Telegram Haptic Feedback. Co-authored-by: Pitrat-wav <255843145+Pitrat-wav@users.noreply.github.com>
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| kick: { ...state.kick, pulses: 3 + Math.floor(Math.random() * 3), rotate: Math.floor(Math.random() * 4) }, | ||
| snare: { ...state.snare, pulses: 2 + Math.floor(Math.random() * 4), rotate: 4 + Math.floor(Math.random() * 4) }, |
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When the new dice action assigns nonzero rotate values here, playback and the drum visualizer use those rotations (SequencerLoop.tsx builds patterns with rotateArray(...)), but MIDI export in App.tsx still serializes each drum with plain bjorklund(...) and ignores rotate. After a user randomizes, especially when the kick rotation becomes 1–3, the exported MIDI drum hits no longer match what they heard in the app.
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I have implemented several key refinements to the drum synthesis engine based on the provided DSP research.
Key changes include:
DrumUtils.tsand integrated it into theTR909Snareto provide its characteristic digital crunch.randomizeDrumsfeature ininstrumentStore.tsthat generates musical Techno-focused Euclidean patterns.DrumsViewto trigger randomization, complete with Telegram Haptic Feedback.syncInternalParamsto theDrumMachineto ensure the audio engine's initial state and randomized updates perfectly match the application state.TR808HiHatandTR808Cowbellusing anonstopcallback and asetTimeoutsafety net to ensure all Web Audio nodes are properly disposed of, preventing memory leaks.All changes have been verified with a full production build and visual testing using Playwright.
PR created automatically by Jules for task 6326423011696977954 started by @Pitrat-wav