Reverberation Enhancement Systems with Time-Varying Mixing Matrices

Schlecht S, Habets EAP. Reverberation Enhancement Systems with Time-Varying Mixing Matrices. In: AES Conference: 59th International Conference: Sound Reinforcement Engineering and Technology. Audio Engineering Society; 2015. Paper 3-2. Available from: https://aes.org/publications/elibrary-page/?id=17831

@inproceedings{Schlecht2015_17831,
  author = {Schlecht, Sebastian and Habets, Emanuël A.P.},
  title = {{Reverberation Enhancement Systems with Time-Varying Mixing Matrices}},
  booktitle = {AES Conference: 59th International Conference: Sound Reinforcement Engineering and Technology},
  note = {Paper 3-2},
  year = {2015},
  month = jul,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17831}
}

TY  - CPAPER
TI  - Reverberation Enhancement Systems with Time-Varying Mixing Matrices
AU  - Schlecht, Sebastian
AU  - Habets, Emanuël A.P.
T2  - AES Conference: 59th International Conference: Sound Reinforcement Engineering and Technology
M1  - Paper 3-2
PY  - 2015
DA  - 2015/07/06
UR  - https://aes.org/publications/elibrary-page/?id=17831
PB  - Audio Engineering Society
LA  - en
AB  - This paper presents a technique to increase the stability of a reverberation enhancement system (RES) via time-variation. RESs are installed in rooms to extend the physical reverberation time via electroacoustic feedback. By introducing variations in the feedback path, the probability that energy builds-up is reduced, and therefore the gain before instability is increased. Time-varying mixing of the feedback paths by unitary matrices is guaranteed to be energy-conserving and introduces variations of the added reverberation generated by a feedback delay network. The theory of time-varying matrices is reviewed and a practical demonstration is given.
ER  -