| Frequency Domain Artificial
Reverberation using Spectral Magnitude Decay |
| Overview |
| Introduction |
| Reverberation |
| Existing Reverb Algorithms |
| Inspirations for this approach |
| Preview: Spectral Magnitude Decay |
| STFT & Phase Vocoder |
| Time-Freezing (Infinite Time Scaling) |
| Ongoing Parallel Time-Freeze |
| Problems with the
Parallel Time-Freeze Reverb |
| Optimizing the
Parallel Time-Freeze Reverb |
| Recursive Spectral Magnitude Decay |
| Frequency Domain Analogue of MoorerÕs Comb Filter |
| Frequency-Dependent Exponential Decay |
| Exponential Decay |
| Spectral Magnitude
Decay Impulse Response & EDC |
| The Phase Problem |
| Desired Phase Signal |
| Desired Phase Signal, cont. |
| Desired Phase Signal, cont. |
| The Auditory Sensation of Roughness |
| Roughness & Beating
— Why CanÕt We All Just Get Along? |
| Amplitude fluctuations resulting from phase incoherence |
| Phase Generation
Methods 1 - Propagation of Instantaneous Frequency |
| Phase Generation
Methods 2 - Phase Randomization |
| Phase Generation
Methods 3 - Partial Phase Randomization |
| Final Spectral Magnitude Decay Algorithm |
| Initial Observations |
| Decay Time Cross-Synthesis Effect |
| Advantages |
| Problems |
| Conclusion |
| Slide 34 |