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The standardization of high-quality speech coding has intensified. In parallel, a number of novel applications are placing new demands on transmission efficiency and quality. In response to such challenges, standardization bodies have begun the definition of requirements for the next generation of very low-rate speech coding. Taking a lead in these(More)
It has often been suggested that digital voice coder performance may depend on the type of listening set used in listener opinion assessments. In this letter, the quantitative impact of using headphones and telephone handsets is presented for single-stimulus MOS assessments. From this analysis, it is derived that there are significant numerical differences(More)
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