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On Loudspeaker Linearization Using Pre-Distortion
KTH, Superseded Departments, Signals, Sensors and Systems.
KTH, Superseded Departments, Signals, Sensors and Systems.
KTH, Superseded Departments, Signals, Sensors and Systems.
KTH, Superseded Departments, Signals, Sensors and Systems.
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2004 (English)In: European DSP Education & Research Symposium (EDERS), 2004Conference paper, Published paper (Refereed)
Abstract [en]

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
2004.
Keyword [en]
pre-distortion, FIR model, linearity, nonlinear model, noise cancellation
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-96550OAI: oai:DiVA.org:kth-96550DiVA: diva2:531252
Conference
European DSP Education & Research Symposium (EDERS)
Note

QC 20130620

Available from: 2012-06-06 Created: 2012-06-06 Last updated: 2013-06-20Bibliographically approved

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Agevik, NiklasFransson, HenrikGrunell, HenrikJakiel, PatrickLundin, Henrik
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CiteExportLink to record
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