Title :
A 2400 bps improved MBELP vocoder
Author :
Zhang, Xinyi ; Jiang, Taihui ; Zhong, Ming
Author_Institution :
Res. Inst. of Inf. Sci., WuYi Univ., Guangdong, China
Abstract :
This paper presents an improved multi-band excitation linear predictive (IMBELP) vocoder at 2.4 kb/s. Compared with a simple MBELP vocoder, this vocoder has some improvements on pitch estimation and unvoiced/voiced (U/V) decision. The synthesized speech of IMBELP vocoder is also better than that of simple MBELP vocoder. After an introduction, the IMBELP vocoder is discussed in detail. The results of pitch estimation and U/V decision based on the IMBELP are compared with those based on simple MBELP
Keywords :
linear predictive coding; parameter estimation; speech synthesis; vocoders; 2.4 kbit/s; IMBELP vocoder; multi-band excitation linear predictive vocoder; pitch estimation; synthesized speech; unvoiced/voiced decision; Amplitude estimation; Decoding; Frequency estimation; Information science; Least squares approximation; Parameter estimation; Speech coding; Speech enhancement; Speech synthesis; Vocoders;
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.2000.891607
