Contributions of talker characteristics and spatial location to auditory streaming
| Autor: | David Alais, Simon Carlile, Kachina Allen |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Adult
Male Masking (art) Speech Reception Threshold Test Acoustics and Ultrasonics Computer science Speech recognition Acoustics Spatial Behavior Auditory Threshold Intelligibility (communication) Speech processing Arts and Humanities (miscellaneous) Space Perception Humans Speech Female Psychoacoustics Speech reception threshold Perceptual Masking |
| Zdroj: | The Journal of the Acoustical Society of America. 123:1562-1570 |
| ISSN: | 0001-4966 |
| Popis: | To examine whether auditory streaming contributes to unmasking, intelligibility of target sentences against two competing talkers was measured using the coordinate response measure (CRM) [Bolia et al., J. Acoust. Soc. Am. 107, 1065-1066 (2007)] corpus. In the control condition, the speech reception threshold (50% correct) was measured when the target and two maskers were collocated straight ahead. Separating maskers from the target by +/-30 degrees resulted in spatial release from masking of 12 dB. CRM sentences involve an identifier in the first part and two target words in the second part. In experimental conditions, masking talkers started spatially separated at +/-30 degrees but became collocated with the target before the scoring words. In one experiment, one target and two different maskers were randomly selected from a mixed-sex corpus. Significant unmasking of 4 dB remained despite the absence of persistent location cues. When same-sex talkers were used as maskers and target, unmasking was reduced. These data suggest that initial separation may permit confident identification and streaming of the target and masker speech where significant differences between target and masker voice characteristics exist, but where target and masker characteristics are similar, listeners must rely more heavily on continuing spatial cues. |
| Databáze: | OpenAIRE |
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