Title :
On the use of asymmetric windows for reducing the time delay in real-time spectral analysis
Author :
Florencio, Dinei A F
Author_Institution :
Dept. of Electr. Eng., Brasilia Univ., Brazil
Abstract :
The idea of asymmetric windowing as a way of reducing time delay in spectral analysis is explored. Traditional windows are analyzed in relation to time delay. Some asymmetric windows are introduced and a comparative analysis with traditional windows is made. It is shown that it is possible to reduce the time delay up to about 25% of the analysis window size. Application to linear predictive speech coding is analyzed, and the experimental results of using an asymmetric window on a standard LPC vocoder are presented
Keywords :
encoding; signal processing; spectral analysis; speech analysis and processing; vocoders; LPC vocoder; asymmetric windows; linear predictive speech coding; real-time spectral analysis; time-delay reduction; Bandwidth; Delay effects; Digital signal processing; Hardware; Leak detection; Linear predictive coding; Spectral analysis; Speech analysis; Speech coding; Vocoders;
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.1991.150149