Title :
High quality harmonic excitation linear predictive speech coding at 2 kb/s
Author :
Bao, Changchun ; Lukaside, J. ; Ritz, Chritian
Author_Institution :
Speech & Audio Signal Process. Lab, Beijing Univ. of Technol., China
Abstract :
The paper presents a high quality harmonic excitation linear predictive (HE-LPC) speech coder operating at 2 kb/s based on a harmonic excitation model with two bands. The system incorporates novel features such as: combined pitch detection; residual harmonic matching voicing determination; extraction and interpolation of residual harmonic magnitudes. Subjective listening tests indicate that this coder has the same quality as that of the Federal Standard MELP (mixed excitation linear prediction) coder at 2.4 kb/s, whether the training database is from Chinese or English.
Keywords :
harmonics; interpolation; linear predictive coding; speech coding; 2 kbit/s; Federal Standard MELP coder; LPC; combined pitch detection; frequency domain techniques; harmonic excitation linear predictive speech coding; residual harmonic magnitude extraction; residual harmonic magnitude interpolation; residual harmonic matching voicing determination; time domain techniques; Delay estimation; Frequency domain analysis; Interpolation; Linear predictive coding; Performance analysis; Quantization; Speech analysis; Speech coding; Speech processing; Vocoders;
Conference_Titel :
Chinese Spoken Language Processing, 2004 International Symposium on
Print_ISBN :
0-7803-8678-7
DOI :
10.1109/CHINSL.2004.1409608
