Abstract
Deriving invariance by integrating cues computed relative to expectations
The Journal of the Acoustical Society of America, Vol.130(4), pp.2375-2375
10/2011
DOI: 10.1121/1.3654519
Abstract
Invariance and variability are notions that have stimulated much research on the acoustics and perception of speech. While some invariance must exist to explain how listeners generally derive the same message from spoken input, the question remains at which level invariance occurs. The theory of acoustic invariance explicitly states that the invariance is found in the acoustic signal. While some phonemic distinctions do seem to be represented by invariant acoustic properties, it is clear that many acoustic cues are context-dependent. Normalization or compensation processes for coping with specific sources of variability have been proposed as solutions to this context-dependency. We examined acoustic properties for a large corpus of American English fricatives. We argue that the lack of invariance is not a major obstacle and demonstrate that it can be overcome by the use of multiple acoustic cues and a relatively simple compensation scheme by which cues are recoded relative to expectations derived from context (vowel quality and speaker). A comparison of this approach (C-CuRE, Computing Cues Relative to Expectations) [McMurray and Jongman, Psych. Rev. 118, 219–246 (2011)] to acoustic invariance and exemplar approaches suggests that only C-CuRE achieved a similar accuracy to listeners and showed the same effects of context.
Details
- Title: Subtitle
- Deriving invariance by integrating cues computed relative to expectations
- Creators
- Allard JongmanBob McMurray
- Resource Type
- Abstract
- Publication Details
- The Journal of the Acoustical Society of America, Vol.130(4), pp.2375-2375
- DOI
- 10.1121/1.3654519
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Language
- English
- Date published
- 10/2011
- Academic Unit
- Communication Sciences and Disorders; Psychological and Brain Sciences; Linguistics; Iowa Neuroscience Institute; Otolaryngology
- Record Identifier
- 9984071662502771
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