Adaptive Equalizer for Acoustic Feedback Control

Favrot A, Faller C. Adaptive Equalizer for Acoustic Feedback Control. J Audio Eng Soc. 2013;61(12):1015-1021. Available from: https://aes.org/publications/elibrary-page/?id=17078

@article{Favrot2013_17078,
  author = {Favrot, Alexis and Faller, Christof},
  title = {{Adaptive Equalizer for Acoustic Feedback Control}},
  journal = {Journal of the Audio Engineering Society},
  volume = {61},
  number = {12},
  pages = {1015--1021},
  year = {2013},
  month = dec,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17078}
}

TY  - JOUR
TI  - Adaptive Equalizer for Acoustic Feedback Control
AU  - Favrot, Alexis
AU  - Faller, Christof
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 61
IS  - 12
SP  - 1015
EP  - 1021
PY  - 2013
DA  - 2013/12/06
UR  - https://aes.org/publications/elibrary-page/?id=17078
PB  - Audio Engineering Society
LA  - en
AB  - An adaptive equalizer can be used to reduce the possibility of acoustic feedback in audio applications involving amplified closed loop systems, such as in public address configurations. The equalizer decreases the gain at those frequencies where feedback is likely to occur. Using a computationally efficient algorithm based on a short-term Fourier transform, the equalization curve is determined by using information obtained from an adaptively estimated feedback path. Using the proposed scheme, feedback gain is reduced before ringing and howling artifacts become noticeable since the estimated feedback path provides rapid indication of the frequencies that are vulnerable to excessive feedback. A real time test illustrates the functionality of the algorithm.
ER  -