Interaction of speech coders and atypical speech II: effects on speech quality
| Autor: | Vijay Parsa, Moneca C. Price, James Till, Donald G. Jamieson |
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| Rok vydání: | 2002 |
| Předmět: |
Adult
Linguistics and Language Computer science Voice Quality Speech recognition media_common.quotation_subject Language and Linguistics Speech Disorders Loudness Speech and Hearing Judgment Speech Production Measurement Communication disorder medicine Humans Language disorder Quality (business) media_common Code-excited linear prediction Observer Variation Weight measurement scales Voice Disorders Speech quality medicine.disease Speech Perception Telecommunications Speech rate |
| Zdroj: | Journal of speech, language, and hearing research : JSLHR. 45(4) |
| ISSN: | 1092-4388 |
| Popis: | We investigated how standard speech coders, currently used in modern communication systems, affect the quality of the speech of persons who have common speech and voice disorders. Three standardized speech coders (GSM 6.10 RPELTP, FS1016 CELP, and FS1015 LPC) and two speech coders based on subband processing were evaluated for their performance. Coder effects were assessed by measuring the quality of speech samples both before and after processing by the speech coders. Speech quality was rated by 10 listeners with normal hearing on 28 different scales representing pitch and loudness changes, speech rate, laryngeal and resonatory dysfunction, and coder-induced distortions. Results showed that (a) nine scale items were consistently and reliably rated by the listeners; (b) all coders degraded speech quality on these nine scales, with the GSM and CELP coders providing the better quality speech; and (c) interactions between coders and individual voices did occur on several voice quality scales. |
| Databáze: | OpenAIRE |
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