Interframe differential coding of line spectrum frequencies
Author
Erzin, E.
Çetin, A. E.
Date
1994Source Title
IEEE Transactions on Speech and Audio Processing
Print ISSN
1063-6676
Publisher
IEEE
Volume
2
Issue
2
Pages
350 - 352
Language
English
Type
ArticleItem Usage Stats
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Show full item recordAbstract
Line spectrum frequencies (LSF's) uniquely represent the linear predictive coding (LPC) filter of a speech frame. In many vocoders LSF's are used to encode the LPC parameters. In this paper, an inter-frame differential coding scheme is presented for the LSF's. The LSF's of the current speech frame are predicted by using both the LSF's of the previous frame and some of the LSF's of the current frame. Then, the difference resulting from prediction is quantized.
Keywords
Acoustic signal processingPredictive control systems
Signal encoding
Signal filtering and prediction
Speech analysis
Speech coding
Speech synthesis
Vocoders