Effect of modulation rate on masking release for speech
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| Format: | Artículo científico |
| Langue: | en |
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Academia Brasileira de Audiologia
2013
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| _version_ | 1876471735873699840 |
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| author | Karina Paes Advíncula |
| author_facet | Karina Paes Advíncula |
| contents | Effect of modulation rate on masking release for speech Karina Paes Advíncula Denise Costa Menezes Fernando Augusto Pacífico Silvana Maria Sobral Griz Salud Noise Hearing Speech perception Perceptual masking Speech discrimination tests Purpose: To investigate the effect of modulation rate on masking release for speech. Methods: Fifteen normal hearing subjects participated in the study. They were tested on speech perception in noise using the sentences of the HINT-Brazil. Speech recognition thresholds were obtained in the presence of steady masking and amplitude modulated masking at rates of 4, 8, 16, 32 and 64 Hz. The magnitude of masking release was obtained for each modulation rate, and results were compared. Results: Data showed significantly lower speech thresholds when the masking noise was amplitude modulated at rates of 4, 8, 16 and 32 Hz, when compared to thresholds obtained in steady noise or noise modulated at 64 Hz. Speech-to-masker ratios (SMR) were higher in steady masking noise, followed by modulated noise at 64 Hz, and lower for modulated rates of 32, 16, 8 and 4 Hz, respectively. Conclusion: The magnitude of masking release for speech does not seem to differ significantly among modulation rates of 4 to 32 Hz. However, for a modulation rate of 64 Hz the magnitude of masking release is significantly reduced. 2013 artículo científico 2317-6431 https://www.redalyc.org/articulo.oa?id=391544056003 en http://www.redalyc.org/revista.oa?id=3915 Audiology - Communication Research application/pdf Academia Brasileira de Audiologia Audiology - Communication Research (Brasil) Num.4 Vol.18 |
| format | Artículo científico |
| id | redalyc_391544056003 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Academia Brasileira de Audiologia |
| spellingShingle | Effect of modulation rate on masking release for speech Karina Paes Advíncula Salud Noise Hearing Speech perception Perceptual masking Speech discrimination tests Effect of modulation rate on masking release for speech Karina Paes Advíncula Denise Costa Menezes Fernando Augusto Pacífico Silvana Maria Sobral Griz Salud Noise Hearing Speech perception Perceptual masking Speech discrimination tests Purpose: To investigate the effect of modulation rate on masking release for speech. Methods: Fifteen normal hearing subjects participated in the study. They were tested on speech perception in noise using the sentences of the HINT-Brazil. Speech recognition thresholds were obtained in the presence of steady masking and amplitude modulated masking at rates of 4, 8, 16, 32 and 64 Hz. The magnitude of masking release was obtained for each modulation rate, and results were compared. Results: Data showed significantly lower speech thresholds when the masking noise was amplitude modulated at rates of 4, 8, 16 and 32 Hz, when compared to thresholds obtained in steady noise or noise modulated at 64 Hz. Speech-to-masker ratios (SMR) were higher in steady masking noise, followed by modulated noise at 64 Hz, and lower for modulated rates of 32, 16, 8 and 4 Hz, respectively. Conclusion: The magnitude of masking release for speech does not seem to differ significantly among modulation rates of 4 to 32 Hz. However, for a modulation rate of 64 Hz the magnitude of masking release is significantly reduced. 2013 artículo científico 2317-6431 https://www.redalyc.org/articulo.oa?id=391544056003 en http://www.redalyc.org/revista.oa?id=3915 Audiology - Communication Research application/pdf Academia Brasileira de Audiologia Audiology - Communication Research (Brasil) Num.4 Vol.18 |
| title | Effect of modulation rate on masking release for speech |
| topic | Salud Noise Hearing Speech perception Perceptual masking Speech discrimination tests |
| url | https://www.redalyc.org/articulo.oa?id=391544056003 |