Title :
An efficient method to compute LSFs from LPC coefficients
Author :
Mei, Xiao-Dan ; Sun, Sheng-he
Author_Institution :
Dept. of Autom. Test & Control, Harbin Inst. of Technol., China
Abstract :
Line spectrum frequencies (LSFs) as one kind of important linear predictive coding parameters have been widely used in speech coding and speech recognition systems. This paper describes an efficient method to simplify the procedure for computing LSFs further. This method computes the intervals containing one root of P(x) and one root of Q(x) by successive bisections and interpolations, and then calculates LSFs also by successive bisections and interpolations. The simulation results show that this method can reduce the computation greatly
Keywords :
interpolation; linear predictive coding; spectral analysis; speech coding; speech recognition; LPC coefficients; LSF computation; interpolation; line spectrum frequencies; linear predictive coding; simulation results; speech coding; speech recognition; successive bisections; Chebyshev approximation; Filters; Frequency; Information filtering; Interpolation; Linear predictive coding; Polynomials; Speech coding; Speech recognition; Speech synthesis;
Conference_Titel :
Signal Processing Proceedings, 2000. WCCC-ICSP 2000. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-5747-7
DOI :
10.1109/ICOSP.2000.891597
