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Reduction on Nonlinear Distortion in Loudspeakers with Digital Motional Feedback

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A good bass response in audio sets with small loudspeakers is often problematic. To compensate the small size of the vibrating surface these loudspeakers must have a large-cone displacement. A direct consequence is high nonlinear distortions. A digital motional feedback, together with a compensation technique based on nonlinear inverse dynamics, has been implemented on a DSP using an accelerometer attached to the cone.

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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=6412

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