NDLI: Objective estimation of speech quality degradation due to transmission error

Content Provider	IEEE Xplore Digital Library
Author	Yamazaki, T. Irii, H.
Copyright Year	1992
Description	Author affiliation: NTT Telecommun. Networks Labs., Tokyo, Japan (Yamazaki, T.; Irii, H.)
Abstract	The possibility of using objective methods to evaluate speech-quality degradation due to transmission errors is discussed. The authors review objective methods used for quantizing distortion and describe a preliminary attempt to objectively estimate the degradation due to random code errors. Several typical aspects of evaluation for the discrete distortion raised in a future network are described based on subjective measurements. Code errors were classified as random bit-errors or as burst-errors. The subjective evaluation scores of coded speech with various bit error rates (BERs) are shown. Evaluation criteria were in five categories. For each sentence-length ten different error patterns at the same error rate were evaluated. Scores changed according to the sentence duration. Higher scores were given when the sentence duration was not long enough for the BER. The effects of errored bit positions unevenly distributed in a sentence are evaluated. The worse score was given to an error placed on the latter part of a sentence.<>
Starting Page	66
Ending Page	70
File Size	385719
Page Count	5
File Format	PDF
ISBN	078030599X
DOI	10.1109/ICC.1992.268288
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-06-14
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Degradation Bit error rate Distortion measurement Speech analysis Propagation losses Error analysis Estimation error Laboratories Speech enhancement Analog-digital conversion
Content Type	Text
Resource Type	Article

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