Abstract—This paper presents an optimized design of uniform-band and octave-band tree-structured filter banks (FBs). These filter banks make use of finite impulse response (FIR) low pass prototype filter in both analysis and synthesis sections and provide near-perfect reconstruction by allowing small amount of distortion at the output. The minimum value of distortion is obtained by optimizing the prototype filter coefficients by varying its cut-off frequency. The Blackman window family and with simple optimization algorithm, filter banks are designed with high efficiency. Several design examples are included to show improved performances of designed filter banks over existing methods.

 

Index Terms—tree-structure, filter bank, uniform-band, octave-band, optimization

Cite: Sandhya Shakya and Jyotsna V. Ogale, "Design and Analysis of Uniform-Band and Octave-Band Tree-Structured Filter Bank," International Journal of Signal Processing Systems, Vol. 4, No. 2, pp. 162-167, April 2016. doi: 10.12720/ijsps.4.2.162-167