Subjective SNR measure for quality assessment of speech coders A cross language study

• Published in: Journal of the Acoustical Society of Japan (E) Vol. 15; no. 6; pp. 377 - 381
• Main Authors: Nakatsui, Mamoru, Noda, Hideki
• Format: Journal Article
• Language: English
• Published: Tokyo Acoustical Society of Japan 1994
• Subjects: Applied sciences; Biological and medical sciences; Cross language study; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; Information, signal and communications theory; Language; Pair-comparison test; Production and perception of spoken language; Psychology. Psychoanalysis. Psychiatry; Psychology. Psychophysiology; Signal processing; Speech coder; Speech processing; Subjective quality; Telecommunications and information theory; Paired comparison; Reproducibility; Coding circuit; Psychometrics; Forced choice; Speech processing; Signal to noise ratio
• ISSN: 0388-2861; 2185-3509
• DOI: 10.1250/ast.15.377

The subjective speech-to-noise-ratio (SNR), derived from the forced-choice pair-comparisontest using the psychometric analysis procedure, has well represented overallspeech quality of speech coders in a single dimension. No significant speaker andlistener variation has been found for a wide range of waveform coders at the tests conductedin two separate sessions 14 months apart using different groups of Englishspeakers and listeners. The purpose of this study is to investigate reproducibility of themeasure conducting the same framework test using Japanese speakers and listeners.The test result shows the subjective SNR measure gives quite reliable scores evaluated in different laboratories with different language backgrounds.