Frequency-Response Masking Filters Based on Serial Masking Schemes

Abstract

In this paper, computationally efficient filter structures based on the frequency-response masking (FRM) technique are proposed for the synthesis of arbitrary bandwidth sharp finite impulse response (FIR) filters. A serial masking scheme is introduced in the new structures to perform the masking task in two stages, which reduces the complexity of the masking filters. Compared to the original FRM and interpolated FIR-FRM (IFIR-FRM) structures, the proposed structures achieve additional savings in terms of numbers of arithmetic operations.

Two-Rate Based Structures for Computationally Efficient Wide- Band FIR Systems

“…Specifically, by realizing F(z) as an FRM filter, see [3][4][5][6][7][8][9][10], we can express the transfer function as…”

“…For frequency-selective wide-band FIR filters, the frequency-response masking (FRM) technique can be employed for complexity reductions due to its use of sparse (namely periodic) subfilters, see [3][4][5][6][7][8][9][10]. For other functions, the FRM technique cannot be used directly, and one therefore has to seek other methods to reduce the complexity.…”

Adaptive window method of FIR filter design

“…The implemented filter has low computational complexity and narrow transition width [7]. Ying Wei et al are focused on computational efficient filter structures based on frequency response masking technique for the synthesis of arbitrary bandwidth sharp finite impulse response filters [8]. Ya Jun Yu et al are implemented a technique that is capable of designing long filters optimizes filter coefficients in prespecified sub expression spaces.…”

Study the Characteristics of FIR filter Based on Modified Kaiser Window

“…A high quality frequency domain applied in analog speech scrambler is reconstructed [13]. An efficient filter design based on FIR structure is implemented [14]. An optimized filter design technique is achieved [15].…”