Acoustic-phonetic features for the automatic classification of fricatives

Ali, Ahmed; Spiegel, Jan Van der; Müeller, Paul

doi:10.1121/1.1357814

Cited by 46 publications

(2 citation statements)

References 41 publications

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“…COG can be used to distinguish sibilant fricatives with different places of articulation (/s z/ vs. /ʃ ʒ/); nonsibilants (/f v θ ð/) tend to have a broad and flat distribution of energy with overall higher spectral peaks relative to sibilants, but with COGs medial to the alveolar (/s z/) and postalveolar (/ʃ ʒ/) sibilants (e.g., Ali, Van der Spiegel, & Mueller, 2001;Forrest et al, 1988;Hughes & Halle, 1956;Jongman et al, 2000). Critically, the characteristic COG of a fricative can vary according to the phonetic context (e.g., the value for /s/ is lower before rounded vowels such as /u/ than before unrounded vowel such as /i/; Jongman et al, 2000;Soli, 1981;Yu, 2019), speech style (e.g., /s/ has a lower value in casual than in careful speech; Maniwa, Jongman, & Wade, 2009), talker gender (e.g., /s/ is lower on average for male than for female speakers of American English; Flipsen et al, 1999;Fuchs & Toda, 2010), and even across individual talkers of the same gender (e.g., Newman et al, 2001).…”

Section: Cue Calibrationmentioning

confidence: 99%

Acoustic–phonetic and auditory mechanisms of adaptation in the perception of sibilant fricatives

Chodroff

Wilson

2019

Atten Percept Psychophys

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Listeners are highly proficient at adapting to contextual variation when perceiving speech. In the present study, we examined the effects of brief speech and nonspeech contexts on the perception of sibilant fricatives. We explored three theoretically motivated accounts of contextual adaptation, based on phonetic cue calibration, phonetic covariation, and auditory contrast. Under the cue calibration account, listeners adapt by estimating a talker-specific average for each phonetic cue or dimension; under the cue covariation account, listeners adapt by exploiting consistencies in how the realization of speech sounds varies across talkers; under the auditory contrast account, adaptation results from (partial) masking of spectral components that are shared by adjacent stimuli. The spectral center of gravity, a phonetic cue to fricative identity, was manipulated for several types of context sound: /z/initial syllables, /v/-initial syllables, and white noise matched in long-term average spectrum (LTAS) to the /z/-initial stimuli. Listeners' perception of the /s/-/ʃ/ contrast was significantly influenced by /z/-initial syllables and LTAS-matched white noise stimuli, but not by /v/-initial syllables. No significant difference in adaptation was observed between exposure to /z/-initial syllables and matched white noise stimuli, and speech did not have a considerable advantage over noise when the two were presented consecutively within a context. The pattern of findings is most consistent with the auditory contrast account of shortterm perceptual adaptation. The cue covariation account makes accurate predictions for speech contexts, but not for nonspeech contexts or for the absence of a speech-versus-nonspeech difference.

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Section: Cue Calibrationmentioning

confidence: 99%

Acoustic–phonetic and auditory mechanisms of adaptation in the perception of sibilant fricatives

Chodroff

Wilson

2019

Atten Percept Psychophys

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show abstract

“…COG can be used to distinguish sibilant fricatives with different places of articulation (/s z/ vs. /ʃ ʒ/); nonsibilants (/f v θ ð/) tend to have a broad and flat distribution of energy with overall higher spectral peaks relative to sibilants, but with COGs medial to the alveolar (/s z/) and postalveolar (/ʃʒ/) sibilants (e.g., Ali, Van der Spiegel, & Mueller, 2001;Forrest et al, 1988;Hughes &Halle,1956;Jongman et al, 2000). Critically, the characteristic COG of a fricative can vary according to the phonetic context (e.g., the value for /s/ is lower before rounded vowels such as /u/ than before unrounded vowel such as /i/; Jongman et al, 2000;Soli, 1981;Y u,2019), speech style (e.g., /s/ has a lower value in casual than in careful speech; Maniwa, Jongman, & Wade, 2009), talker gender (e.g., /s/ is lower on average for male than for female speakers of American English; Flipsen et al, 1999;Fuchs & Toda, 2010), and even across individual talkers of the same gender (e.g., Newman et al, 2001).…”

Section: Cue Calibrationmentioning

confidence: 99%

Acoustic-phonetic and auditory mechanisms of adaptation in the perception of sibilant fricatives

Chodroff¹,

Wilson²

2019

Preprint

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Listeners are highly proficient at adapting to contextual variation when perceiving speech. The present study examined the effects of brief speech and non-speech contexts on the perception of sibilant fricatives. We explored three theoretically motivated accounts of contextual adaptation based on phonetic cue calibration, phonetic covariation, and auditory contrast. Under the cue calibration account, listeners adapt by estimating a talker-specific average for each phonetic cue or dimension; under the cue covariation account, listeners adapt by exploiting consistencies in how the realization of speech sounds vary across talkers; under the auditory contrast account, adaptation results from (partial) masking of spectral components that are shared by adjacent stimuli. The spectral center of gravity, a phonetic cue to fricative identity, was manipulated for several types of context sound: /z/-initial syllables, /v/-initial syllables, and white noise matched in long-term average spectrum (LTAS) to the /z/-initial stimuli. Listeners’ perception of the /s/–/ʃ/ contrast was significantly influenced by /z/-initial syllables and LTAS-matched white noise stimuli, but not by /v/-initial syllables. No significant difference in adaptation was observed between exposure to /z/-initial syllables and matched white noise stimuli, and speech did not have a considerable advantage over noise when the two were presented consecutively within a context. The pattern of findings is most consistent with the auditory contrast account of short-term perceptual adaptation. The cue covariation account makes accurate predictions for speech contexts, but not for non-speech contexts or the absence of a speech vs. non-speech difference.

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Diagnostic Evaluation of Phonetic Feature Extraction Engines: A Case Study with the Time Map Model

Aioanei

Carson-Berndsen

Kanokphara

2006

Advances in Applied Artificial Intelligence

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Acoustic-phonetic features for the automatic classification of fricatives

Cited by 46 publications

References 41 publications

Acoustic–phonetic and auditory mechanisms of adaptation in the perception of sibilant fricatives

Acoustic–phonetic and auditory mechanisms of adaptation in the perception of sibilant fricatives

Acoustic-phonetic and auditory mechanisms of adaptation in the perception of sibilant fricatives

Diagnostic Evaluation of Phonetic Feature Extraction Engines: A Case Study with the Time Map Model

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