Title: Speech Quality Evaluation: A New Application of
Abstract:Speech quality evaluation is an important research topic. The traditional way for speech quality evaluation is using subjective tests. They are reliable, but very expensive, time con- suming, and cann...Speech quality evaluation is an important research topic. The traditional way for speech quality evaluation is using subjective tests. They are reliable, but very expensive, time con- suming, and cannot be used in certain applications such as online monitoring. Objective models, based on human perception, were developed to predict the results of subjective tests. The existing ob- jective methods require either the original speech or complicated computation model, which makes some applications of quality evaluation impossible. In this paper, we propose a novel speech quality evaluation method using digital watermarking. Our algorithm evaluates the speech quality without the need of reference speech or any compu- tational model. The watermark is embedded in the discrete wavelet domain or temporal domain of a speech signal by using quanti- zation technique. This algorithm can evaluate perceptual quality of speech that is distorted by Gaussian noise, MP3 compression, low-pass filtering, and packet loss. The experimental results show that the method yields accurate quality scores which are very close to the results of the perceptual evaluation of speech quality. Index Terms—Mean opinion score (MOS), perceptual evalua- tion of speech quality (PESQ), speech quality evaluation, water- marking.Read More
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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