Title :
A Novel Approach to Calculation of Line Spectral Frequencies Based on Inter-Frame Ordering Property
Author_Institution :
Delta S.P.E., Kiev
Abstract :
A problem of calculation of line spectral frequencies (LSF) is considered. The investigation of mutual LSF location on adjacent quasi-stationary frames is performed. It was found that in majority of cases LSF inter-frame ordering property takes place. On this basis a new approach to LSF calculation is proposed. The LSF localization is mainly reduced to verification of inter-frame ordering property. The computational expenses are reduced in 3.4 times in comparison with widely used Kabal´s method. Besides, the maximum number of operations is lower than the minimum expenses of accelerated Kabal´s method. The method was implemented on fixed-point DSP and showed stable performance
Keywords :
speech processing; fixed-point DSP; inter-frame ordering property; line spectral frequencies; quasi-stationary frames; speech signal; Acceleration; Delay; Digital signal processing; Equations; Filters; Frequency; Quantization; Spectrogram; Speech coding; Speech processing;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1660843
