Natural speech statistics shift phoneme categorization
Natural speech statistics shift phoneme categorization
复制标题
自然语音统计改变音素分类
DOI:
10.3758/s13414-018-01659-3
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Ashley A. Assgari
中科院分区:
文献类型:
--
作者:
Christian E. Stilp;Ashley A. Assgari
All perception takes place in context. Recognition of a given speech sound is influenced by the acoustic properties of surrounding sounds. When the spectral composition of earlier (context) sounds (e.g., more energy at lower first formant [F1] frequencies) differs from that of a later (target) sound (e.g., vowel with intermediate F1), the auditory system magnifies this difference, biasing target categorization (e.g., towards higher-F1 /ɛ/). Historically, these studies used filters to force context sounds to possess desired spectral compositions. This approach is agnostic to the natural signal statistics of speech (inherent spectral compositions without any additional manipulations). The auditory system is thought to be attuned to such stimulus statistics, but this has gone untested. Here, vowel categorization was measured following unfiltered (already possessing the desired spectral composition) or filtered sentences (to match spectral characteristics of unfiltered sentences). Vowel categorization was biased in both cases, with larger biases as the spectral prominences in context sentences increased. This confirms sensitivity to natural signal statistics, extending spectral context effects in speech perception to more naturalistic listening conditions. Importantly, categorization biases were smaller and more variable following unfiltered sentences, raising important questions about how faithfully experiments using filtered contexts model everyday speech perception.
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影响因子:
5.4
作者:
McMurray, Bob;Jongman, Allard
通讯作者:
Jongman, Allard
DOI:
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发表时间:
2015-10
期刊:
--
影响因子:
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作者:
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通讯作者:
Douglas M. Bates;M. Maechler;Ben Bolker;Steven C. Walker
DOI:
10.1121/1.3647264
发表时间:
2011
期刊:
The Journal of the Acoustical Society of America
影响因子:
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作者:
Stilp,ChristianE;Kluender,KeithR
通讯作者:
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DOI:
10.1037//0278-7393.22.5.1166
发表时间:
1996-09
期刊:
Journal of experimental psychology. Learning, memory, and cognition
影响因子:
--
作者:
S. Goldinger
通讯作者:
S. Goldinger
DOI:
10.1121/1.4908308
发表时间:
2015
期刊:
The Journal of the Acoustical Society of America
影响因子:
--
作者:
Winn,MatthewB;Litovsky,RuthY
通讯作者:
Litovsky,RuthY