Title :
Regular FFT-related transform kernels for DCT/DST-based polyphase filter banks
Author_Institution :
AG Digitale Signalverarbeitung, Ruhr Univ., Bochum, Germany
Abstract :
A realization for the discrete cosine and sine transforms (DCT and DST) is proposed which is based on an FFT (fast Fourier transform) optimized for DSP (digital signal processor) use. Besides its regular structure, even the theoretically interesting total number of required operations is about the same as needed by the most regular direct approach and only slightly higher than the minimum number yet published. Compared to a similar approach published recently by N. Ramamurthy and M.N.S. Swamy (1990), it is even more efficient
Keywords :
fast Fourier transforms; filtering and prediction theory; signal processing; DCT/DST-based polyphase filter banks; digital signal processor; discrete cosine transform; discrete sine transform; regular FFT-related transform kernels; Arithmetic; Channel bank filters; Digital signal processing; Discrete cosine transforms; Discrete transforms; Frequency; Kernel; Low pass filters; Signal processing; Signal processing algorithms;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150852
