Title :
The Optimum Design of Multistage Multirate FIR Filter for Audio Signal Sampling Rate Conversion via a Genetic Algorithm Approach
Author :
Huang, Der-Feng ; Hung, Shau-Ren
Author_Institution :
Dept. of Electr. Eng., Lung-Hwa Univ. of Sci. & Technol., Taoyuan, Taiwan
Abstract :
In audio signal processing, there are three major sampling rates, 32 KHz, 44.1 KHz, and 48 KHz used in the audio signal processing. It is important to employ multirate signal processing techniques to remove imaging and/or aliasing in modern digital signal processing system with different input-output sampling rate. The application of equivalent multistage multirate sampling rate technologies can reduce the total storage requirement (TSR) and the number of multiplications per second (MPS), respectively. The choice of number of stages and the design of the order of FIR filters are the parameters to be determined. A two-phase algorithm combining the genetic algorithm and integer adjustment for parameter combination approach is proposed to determine these parameters. With different sampling rate conversions, several design examples are illustrated in this paper.
Keywords :
FIR filters; audio signal processing; genetic algorithms; signal sampling; audio signal processing; audio signal sampling rate conversion; frequency 32 kHz; frequency 44.1 kHz; frequency 48 kHz; genetic algorithm; input-output sampling rate; multiplications per second; multistage multirate FIR filter; optimum design; parameter combination approach; total storage requirement; Algorithm design and analysis; Digital signal processing; Finite impulse response filter; Frequency; Genetic algorithms; Interpolation; Sampling methods; Signal design; Signal processing algorithms; Signal sampling;
Conference_Titel :
Image and Signal Processing, 2009. CISP '09. 2nd International Congress on
Conference_Location :
Tianjin
Print_ISBN :
978-1-4244-4129-7
Electronic_ISBN :
978-1-4244-4131-0
DOI :
10.1109/CISP.2009.5301331
