A Novel Octave Filter Bank Design Method Based upon Cascaded Filters

Xue Hai Ren; Fang Qi Yu

doi:10.4028/www.scientific.net/AMR.834-836.1122

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 834-836A Novel Octave Filter Bank Design Method Based...

A Novel Octave Filter Bank Design Method Based upon Cascaded Filters

Abstract:

A novel octave or fractional octave filter design method is presented here. In this method, a cascaded IIR filter is applied to overcome the Finite Word-Length Effect. Compared with the traditional octave filter bank, this method does not require 1/2 extraction or a corresponding anti-aliasing filter. The filter frequency response is improved. Filter attenuation values conform to the standard IEC1260-1995 defined class 0 filters. Simulation and experimental studies shows that the filter bank obtains a more accurate result than does the traditional method, especially in the low-frequency part. The 1/3 octave filter bank can analyze speech signals effectively.

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Periodical:

Advanced Materials Research (Volumes 834-836)

Pages:

1122-1127

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.834-836.1122

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Online since:

October 2013

Authors:

Xue Hai Ren, Fang Qi Yu

Keywords:

Digital Signal Process, Filter Bank, Finite Word-Length Effect, Octave Band Analysis

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