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Real-time DSP Implementation of Audio Crosstalk Cancellation using Mixed Uniform Partitioned Convolution
SreenivasaRao Chunduri, NVK Mahalakshmi, Dhulipalla VenkataRao
Pages - 118 - 127     |    Revised - 15-09-2012     |    Published - 24-10-2012
Volume - 6   Issue - 4    |    Publication Date - October 2012  Table of Contents
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KEYWORDS
Convolution, Crosstalk Cancellation, Partitioned Convolution, Mixed filtering, FFT, Overlap Save Method
ABSTRACT
For high fidelity sound reproduction, it is necessary to use long filter coefficients in audio crosstalk cancellation. To implement these long filters on real-time DSP processors, conventional overlap save technique suffers from more computational power as well as processing delay. To overcome these technical problems, mixed uniform partitioned convolution technique is proposed. This method is derived by combining uniform partitioned convolution with mixed filtering technique. With the proposed method, it is possible to perform audio crosstalk cancellation even at the order of ten thousand filter taps with less computations and short processing delay. The proposed technique was implemented on 32-bit floating point DSP processor and design was provided with efficient memory management to achieve optimization in computational complexity. The computational comparison of this method with conventional methods shows that the proposed technique is very efficient for long filters
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Mr. SreenivasaRao Chunduri
KLUniversity - India
chsrinivas19800305@rediffmail.com
Mr. NVK Mahalakshmi
SRK Institute of Technology - India
Dr. Dhulipalla VenkataRao
Narasaraopet Institute of Technology - India