Frieve Vinyl Explained – Microscopic stylus/groove physics simulation
2 days ago
- #audio_signal_processing
- #analog_audio_simulation
- #vinyl_groove_physics
- Simulates stylus-groove contact using Hertz/Winkler mechanics and rigid-body dynamics, checked against real-world performance metrics.
- Audio signal processing includes pink noise filtered through rumble and music LF shapers, RIAA pre-emphasis, and velocity integration for groove modulation.
- Models physical contact at 2g VTF with ~0.4 GPa pressure, averaging microscopic asperities in a ~5×7µm patch for accurate roughness representation.
- Derives treble loss and pinch-effect distortion from geometric stylus-radius scanning, not added formulas.
- Calibrates roughness to SNR 60.0 dB (9.7 effective bits) with dynamic range up to 72 dB at +12 dB peak.
- Noise sources include multi-scale groove roughness, physically modeled dust deposition, and electrically injected static pulses.