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- Title
Monaural performance intensity functions of average esophageal speech.
- Authors
Trimmis N; Papadopoulos S
- Abstract
Aim of the study The aim of the present study was to compare performance-intensity functions of average esophageal and normal speech in quiet and at various signal-to-noise ratios. Methods The individuals who participated in this investigation included twenty native Modern Greek adult listeners (10 males and 10 females). All subjects had pure tone thresholds of </= 15 dB HL at all octave frequencies ranging from 250 Hz to 8000 Hz. with no known history of auditory dysfunction or neurological disorder. The speech stimuli used for both conditions in this experiment were four 50-bisyllabic-word lists. For the esophageal speech stimuli, all 200 words were recorded in an Industrial Acoustic Company booth meeting ANSI S3.1 standards, by one male esophageal speaker. Each word was produced several times and two judges (speech pathologists) rated the repetitions of each word for perceived quality of production, and the best production of each word was selected. Testing was conducted in a sound isolated booth with all stimuli presented monaurally (right ear). Each list was presented monaurally starting at 0 dB HL and ascending in 5 dB HL steps to minimize nonauditory factors such as memory effects. In addition, the order of the presentation of words within each list was randomised for each subject and for each intensity level. Word recognition scores were assessed in quiet and under 5 different signal-to-noise ratios. These repeated measures were analysed by mixed models with random effects and using pseudo variables. Results- Conclusions Our results indicated that listeners performed significantly better in quiet than in noise, however, word recognition scores for the esophageal speech stimuli were poorer for both conditions.
- Publication
Archives: The International Journal of Medicine, 2009, Vol 2, Issue 4, p299
- ISSN
1791-4000
- Publication type
Journal Article