Classified vector quantizer technique for image coding employing the linear phase paraunitary M‐band filter bank

1996 ◽  
Vol 35 (8) ◽  
pp. 2266 ◽  
Author(s):  
Chang Woo Lee
Keyword(s):  
Image Coding ◽  
Filter Bank ◽  
Linear Phase ◽  
Vector Quantizer ◽  
Band Filter

scholarly journals Efficient uniform digital filter bank with linear phase and FRM technique for hearing aids

2018 ◽  
Vol 7 (1.9) ◽  
pp. 69 ◽  
Author(s):  
G Parameshappa ◽  
D Jayadevapp
Keyword(s):  
Digital Filter ◽  
Hearing Aids ◽  
Filter Bank ◽  
Fir Filter ◽  
Linear Phase ◽  
Iir Filters ◽  
Iir Filter ◽  
Band Filter ◽  
Frequency Response Masking ◽  
Digital Filter Bank

This paper attempts to present an uniform digital filter bank based on linear phase FIR and IIR filters applied for Frequency Response Masking (FRM) technique in hearing aid applications.In the proposed filter bank, nine uniformly spaced sub-bands are formed with the help of half band filters and masking filters. These nine channel FIR filter bank is realized using an interpolated half band linear phase FIR filter and an appropriate number of masking FIR filters. The nine channel IIR filter bank is realized using an interpolated half band approximately linear phase IIR filter and an appropriate number of masking filters. The proposed approximately linear phase IIR half band filter bank is compared with filter bank based on linear phase FIR half band filters in terms of area, power, memory and number of gates needed for implementation. The experiment was carried on various hearing loss cases and the results obtained from these tests proves that, the proposed filter bank achieved the required matching between audiograms and magnitude response of the filter bank at very reasonable range with less computational complexity.

Expansion of a Frequency Range in the WR-4 Band Filter Bank

2019 ◽  
Vol 139 (11) ◽  
pp. 551-557 ◽  
Author(s):  
Takashi Kawamura ◽  
Masaaki Fuse ◽  
Shigenori Mattori
Keyword(s):  
Filter Bank ◽  
Frequency Range ◽  
Band Filter

scholarly journals Analysis of half-band approximately linear phase IIR filter realization structure in MATLAB

2015 ◽  
Vol 28 (4) ◽  
pp. 611-623 ◽  
Author(s):  
Aleksandar Radonjic ◽  
Jelena Certic
Keyword(s):  
Fixed Point ◽  
Detailed Analysis ◽  
Filter Design ◽  
Linear Phase ◽  
Parallel Connection ◽  
Iir Filter ◽  
Filter Structure ◽  
Band Filter ◽  
Design Algorithms

In this paper a detailed analysis of an atypical filter structure in MATLAB Filter Design and Analysis (FDA) Tool is presented. As an example of atypical filter structure, the IIR half-band filter with approximately linear phase realized as a parallel connection of two all-pass branches was examined. We compare two types of those filters obtained by two different design algorithms. FDA tool was used for the experiment because different effects of the fixed point implementation can be simulated easily. One of the goals of this paper was to compare results obtained by two different design algorithms. In addition, different realizations of the filter structure based on the parallel connection of two all-pass branches were examined.

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