On Loudspeaker Linearization Using Pre-Distortion
2004 (English)In: European DSP Education & Research Symposium (EDERS), 2004Conference paper (Refereed)
In this paper we present a system for linearizing the combined output of a stereo ampliﬁer and loudspeaker through pre-distortion. Removal of room cancellation effects is also discussed. The system uses white noise to estimate an FIR model with the Recursive Least Squares algorithm and experiments show that this can signiﬁcantly improve the linearity of the sound system. We show that the system can be extended with a nonlinear model and that this indeed can be implemented on a TexasInstruments TMS320C6701 DSP with excellent performance.
Place, publisher, year, edition, pages
pre-distortion, FIR model, linearity, nonlinear model, noise cancellation
IdentifiersURN: urn:nbn:se:kth:diva-96550OAI: oai:DiVA.org:kth-96550DiVA: diva2:531252
European DSP Education & Research Symposium (EDERS)
QC 201306202012-06-062012-06-062013-06-20Bibliographically approved