Acoustic feedback limits the maximum stable gain of sound reinforcement systems. Acoustic feedback cancellation methods that use the traditional gradient-based or least-squares-based adaptive filtering algorithms present a bias in the feedback path estimate if no decorrelation algorithm is used. This work evaluates the recently proposed AFC-CE method, which estimates the feedback path impulse response from the cepstrum of the error signal, in a situation of short acoustic paths such as the ones that occur in hearing aid applications. Simulation results showed that the AFC-CE method is able to increase the maximum stable gain by 251 dB while keeping a good sound quality.
|Title of host publication
|2016 12th IEEE International Conference on Industry Applications, INDUSCON 2016
|Institute of Electrical and Electronics Engineers Inc.
|Number of pages
|Published - 8 Mar 2017
|12th IEEE International Conference on Industry Applications, INDUSCON 2016 - Curitiba, Brazil
Duration: 20 Nov 2016 → 23 Nov 2016
|12th IEEE International Conference on Industry Applications, INDUSCON 2016
|20/11/16 → 23/11/16