Multiple source MOS evaluation of a flexible low-rate vocoder

This paper describes the design and MOS (mean opinion score) performance of a family of low rate, low complexity speech coding algorithms known as time domain voicing cutoff (TDVC). TDVC is a predictive coding algorithm that employs a single transition frequency dividing voiced and unvoiced excitati...

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Bibliographic Details
Main Authors: Zinser, R.L., Grabb, M.L., Koch, S.R.
Format: Conference Proceeding
Language:English
Subjects:
Autocorrelation
Cutoff frequency
Decoding
Filter bank
Frequency domain analysis
Quantization
Satellites
Speech coding
Speech synthesis
Synthesizers
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Summary:This paper describes the design and MOS (mean opinion score) performance of a family of low rate, low complexity speech coding algorithms known as time domain voicing cutoff (TDVC). TDVC is a predictive coding algorithm that employs a single transition frequency dividing voiced and unvoiced excitation. It provides the voicing flexibility of a frequency domain algorithm with lower complexity and rate overhead. A number of algorithm variants were MOS tested using three distinct sets of source material. The results are discussed in terms of performance for each of the three sources, and demonstrate that choice of source material has a great impact on both vocoder scoring and ranking.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.1998.674482