Reduction of Low Frequency Loudspeaker Distortion Using an Adaptive, Driver Independent Digital Signal Processing System
نویسنده
چکیده
An adaptive digital filtering system is developed for low-frequency audio transducers to reduce nonlinear transducer responses in an effort to eliminate audible harmonic distortion. A Spectrum PC/C5X digital signal processing (DSP) board is used to implement the filtering algorithm , and a piezoelectric accelerometer is used to measure the transducer's movement. The filter is based on the least-mean-square adaptive algorithm. MATLAB simulation shows at least 90% reduction in distortion, but processor speed limits the overall effectiveness of the system. Abstract Abstract TABLE OF CONTENTS
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