Anti-Feedback +3Hz Shield • 5 Window Profiles • 10-Metric Laboratory Matrix
| # & Quality Dimension | Pre-Filter (Mic In) | Post-Filter (Output) | Measured Delta ($\Delta$) | Acoustic Element Removed / Transformed |
|---|---|---|---|---|
| 1. Spectral Centroid Shift | 0 Hz | 0 Hz | 0 Hz | Center-of-mass tonal brightness. Shows downward shift to sub-bass drone. |
| 2. High-Frequency Ratio (>3.5kHz) | 0.0% | 0.0% | 0.0% | Vocal air and sibilance energy loss stripped by Sinc stopband. |
| 3. Crest Factor (Dynamics) | 0.0 dB | 0.0 dB | 0.0 dB | Transient smearing. Convolves speech spikes into rectangular sustained blocks. |
| 4. Transfer Function Mag (|H(f)|) | 0.0 dB | -0.0 dB | -0.0 dB | Average passband-to-stopband attenuation depth of moving average. |
| 5. Spectral Flatness (SFM) | 0.000 | 0.000 | 0.000 | Tonality vs. Noise (0=pure tonal spike, 1=white noise). Shows drone focus. |
| 6. Acoustic Clean-Up Score | Raw Input | 0 / 100 | +0 pts | Quantifies removal of 60Hz hum, sub-thumps, DC drift, and ambient hiss. |
| 7. Ambient Transformation Index | 0 (Dry) | 0 / 100 | +0 pts | Temporal diffusion: 0=Speech, 45=Reverb Wash, 85=Cosmic Abyss. |
| 8. Estimated THD+N Density | 0.1% | 0.0% | +0.0% | Harmonic density injected by Shimmer (+12st) and Tanh Saturation. |
| 9. Log-Spectral Distance (LSD) | 0.0 dB | 0.0 dB | 0.0 dB | Logarithmic envelope deformation distance between input and output spectra. |
| 10. Active Group Delay Latency | 0.0 ms | 0.0 ms | +0.0 ms | Linear phase physical group delay through (N-1)/2 convolution buffers. |