Name
Title | ||
|---|---|---|
Measurement of the effects of nonlinearities on the network-based linear acoustic echo cancellation |
Abstract | ||
|---|---|---|
It is well known that an over-driven loudspeaker would produce a nonlinearity that limits the performance of an acoustic echo canceler (AEC). In contrast, only a handful of studies have been documented on the effect of speech coding nonlinearity on the AEC. This paper investigates the com- bined effect of both types of nonlinearities in the network- based AEC framework as opposed to when the AEC is per- formed at the source of echo such as a cellular handset. The simulation results show that while a mild saturation- type loudspeaker nonlinearity causes the echo return loss en- hancement (ERLE) to go down significantly, it is the non- linear speech coding distortion on the acoustic echo signal that ultimately reduces the achievable ERLE. The results also point to the fact that a low bit-rate speech codec is capable of synthesizing a perceptually acceptable speech signal but does it in a way that is untractable by traditional linear AEC algorithms. |
Year | Venue | Keywords |
|---|---|---|
2006 | EUSIPCO | cellular radio,echo suppression,loudspeakers,speech coding,acoustic echo canceler,acoustic echo signal,cellular handset,echo return loss enhancement,loudspeaker,network-based linear acoustic echo cancellation,nonlinear speech coding distortion,speech codec |
Field | DocType | ISSN |
Return loss,Speech coding,Nonlinear system,Computer science,Speech recognition,Acoustics,Handset,Loudspeaker,Distortion | Conference | 2219-5491 |
Citations | PageRank | References |
0 | 0.34 | 2 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ted S. Wada | 1 | 37 | 6.37 |
| Biing-Hwang Juang | 2 | 3388 | 699.72 |
| Rafid A. Sukkar | 3 | 0 | 0.34 |