Paper Info
Title
Linearization of Loudspeaker Systems Using a Subband Parallel Cascade Volterra Filter
Abstract
In this paper, we propose a low complexity realization method for compensating for nonlinear distortion. Generally, nonlinear distortion is compensated for by a linearization system using a Volterra kernel. However, this method has a problem of requiring a huge computational complexity for the convolution needed between an input signal and the 2nd-order Volterra kernel. The Simplified Volterra Filter (SVF), which removes the lines along the main diagonal of the 2nd-order Volterra kernel, has been previously proposed as a way to reduce the computational complexity while maintaining the compensation performance for the nonlinear distortion. However, this method cannot greatly reduce the computational complexity. Hence, we propose a subband linearization system which consists of a subband parallel cascade realization method for the 2nd-order Volterra kernel and subband linear inverse filter. Experimental results show that this proposed linearization system can produce the same compensation ability as the conventional method while reducing the computational complexity.
Year
DOI
Venue
2007
10.1093/ietfec/e90-a.8.1616
IEICE Transactions
Keywords
Field
DocType
loudspeaker systems,simplified volterra filter,parallel cascade volterra filter,conventional method,volterra kernel,huge computational complexity,subband linear inverse filter,nonlinear distortion,proposed linearization system,computational complexity,linearization system,low complexity realization method
Kernel (linear algebra),Control theory,Convolution,Cascade,Nonlinear distortion,Inverse filter,Linearization,Mathematics,Main diagonal,Computational complexity theory
Journal
Volume
Issue
ISSN
E90-A
8
0916-8508
Citations 
PageRank 
References 
5
0.95
3
Authors
3
Name
Order
Citations
PageRank
Hideyuki Furuhashi150.95
Yoshinobu Kajikawa29334.15
Yasuo Nomura34711.75