Abstract
In a public address system, due to the amplification system, the source and loudspeaker signals are correlated. Acoustic feedback cancellation methods based on the Wiener theory present a bias in the estimate of the feedback path if no decorrelation algorithm is used. This work presents a new approach based on cepstral analysis to identify and cancel the feedback path. The only known previous cepstrum based formulations are taken in consideration and reviewed, and the process is now completely derived. A new method is proposed and simulation results showed that it is able to present an improvement in the estimation of the feedback path when compared to the state-of-art method.
| Original language | English |
|---|---|
| Title of host publication | 2013 Signal processing |
| Subtitle of host publication | algorithms, architectures, arrangements, and applications (SPA) |
| Publisher | IEEE Canada |
| Pages | 205-209 |
| Number of pages | 5 |
| ISBN (Electronic) | 9788362065172 |
| Publication status | Published - 2013 |
| Externally published | Yes |
| Event | 2013 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) - Poznán, Poland Duration: 26 Sept 2013 → 28 Sept 2013 |
Conference
| Conference | 2013 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) |
|---|---|
| Country/Territory | Poland |
| City | Poznán |
| Period | 26/09/13 → 28/09/13 |
Keywords
- Public address system
- Acoustic feedback cancellation
- Cepstral analysis