Graduate School and Research Center In communication systems

New models for characterizing mobile terminal loudspeaker distortions

Mossi, Moctar; Yemdji, Christelle; Evans, Nicholas W D; Hergoltz, C; Beaugeant, Christophe; Degry, P

IWAENC 2010, International Workshop on Acoustic Echo and Noise Control, August 30-September 2nd, 2010, Tel Aviv, Israel

            This paper presents two new approaches to model nonlinear   distortions which commonly arise in small loudspeakers used   in mobile terminals. One is based upon a new, quantized frequency   domain approach and another upon a parallelized polynomial filter   approach. Both models are derived from practical studies of the inputoutput   characteristics of real mobile terminal loudspeaker and artificial   sinusoidal signals. The models are then used to predict the nonlinear   distortions in real speech signals. Comparisons to ground-truth   distortions are performed to validate the models and confirm that both   produce reliable predictions of non-linear distortions. In contrast to   existing approaches, the new models are computationally efficient and   are suitable for the real-time compensation of non-linear distortions.

Document Bibtex

Type:Conference
Language:English
City:Tel Aviv
Country:ISRAEL
Date:
Department:Multimedia Communications
Eurecom ref:3158
Copyright: Copyright VDE Verlag. Personal use of this material is permitted. The definitive version of this paper was published in IWAENC 2010, International Workshop on Acoustic Echo and Noise Control, August 30-September 2nd, 2010, Tel Aviv, Israel and is available at :
Bibtex: @inproceedings{EURECOM+3158, year = {2010}, title = {{N}ew models for characterizing mobile terminal loudspeaker distortions}, author = {{M}ossi, {M}octar and {Y}emdji, {C}hristelle and {E}vans, {N}icholas {W} {D} and {H}ergoltz, {C} and {B}eaugeant, {C}hristophe and {D}egry, {P}}, booktitle = {{IWAENC} 2010, {I}nternational {W}orkshop on {A}coustic {E}cho and {N}oise {C}ontrol, {A}ugust 30-{S}eptember 2nd, 2010, {T}el {A}viv, {I}srael}, address = {{T}el {A}viv, {ISRAEL}}, month = {08}, url = {http://www.eurecom.fr/publication/3158} }
See also: