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1
Mandatory dichotic integration of second-formant information: Contralateral sine bleats have predictable effects on consonant place judgments
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2
Informational masking and the effects of differences in fundamental frequency and fundamental-frequency contour on phonetic integration in a formant ensemble
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3
Across-formant integration and speech intelligibility:effects of acoustic source properties in the presence and absence of a contralateral interferer
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4
Acoustic source characteristics, across-formant integration, and speech intelligibility under competitive conditions
Abstract: An important aspect of speech perception is the ability to group or select formants using cues in the acoustic source characteristics-for example, fundamental frequency (F0) differences between formants promote their segregation. This study explored the role of more radical differences in source characteristics. Three-formant (F1+F2+F3) synthetic speech analogues were derived from natural sentences. In Experiment 1, F1+F3 were generated by passing a harmonic glottal source (F0 = 140 Hz) through second-order resonators (H1+H3); in Experiment 2, F1+F3 were tonal (sine-wave) analogues (T1+T3). F2 could take either form (H2 or T2). In some conditions, the target formants were presented alone, either monaurally or dichotically (left ear = F1+F3; right ear = F2). In others, they were accompanied by a competitor for F2 (F1+F2C+F3; F2), which listeners must reject to optimize recognition. Competitors (H2C or T2C) were created using the time-reversed frequency and amplitude contours of F2. Dichotic presentation of F2 and F2C ensured that the impact of the competitor arose primarily through informational masking. In the absence of F2C, the effect of a source mismatch between F1+F3 and F2 was relatively modest. When F2C was present, intelligibility was lowest when F2 was tonal and F2C was harmonic, irrespective of which type matched F1+F3. This finding suggests that source type and context, rather than similarity, govern the phonetic contribution of a formant. It is proposed that wideband harmonic analogues are more effective informational maskers than narrowband tonal analogues, and so become dominant in across-frequency integration of phonetic information when placed in competition.
URL: https://publications.aston.ac.uk/id/eprint/25859/
https://publications.aston.ac.uk/id/eprint/25859/1/Acoustic_source_characteristics_across_formant_integration_and_speech_intelligibility_under_competitive_conditions.pdf
https://doi.org/10.1037/xhp0000038
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5
Acoustic Source Characteristics, Across-Formant Integration, and Speech Intelligibility Under Competitive Conditions
Roberts, Brian; Summers, Robert J.; Bailey, Peter J.. - : American Psychological Association, 2015
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6
Formant-Frequency Variation and Informational Masking of Speech by Extraneous Formants: Evidence Against Dynamic and Speech-Specific Acoustical Constraints
Roberts, Brian; Summers, Robert J.; Bailey, Peter J.. - : American Psychological Association, 2014
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7
Formant-frequency variation and its effects on across-formant grouping in speech perception
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8
The intelligibility of noise-vocoded speech:spectral information available from across-channel comparison of amplitude envelopes
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9
Effects of the Rate of Formant-Frequency Variation on the Grouping of Formants in Speech Perception
Summers, Robert J.; Bailey, Peter J.; Roberts, Brian. - : Springer-Verlag, 2011
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10
The intelligibility of noise-vocoded speech: spectral information available from across-channel comparison of amplitude envelopes
Roberts, Brian; Summers, Robert J.; Bailey, Peter J.. - : The Royal Society, 2011
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11
Dissociations between serial position and number of letters effects in lateralised visual word recognition
In: Journal of research in reading. - Leeds : Wiley-Blackwell 28 (2005) 3, 258-273
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12
Hearing - Articles and Reports - Auditory Temporal Order Discrimination and Backward Recognition Masking in Adults With Dyslexia
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 46 (2003) 6, 1352-1366
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13
Auditory temporal order discrimination and backward recognition masking in adults with dyslexia
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 46 (2003) 6, 1352-1366
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14
Handedness, measures of hemispheric asymmetry, and lateralised lexical decision
In: Laterality. - Abingdon : Routledge, Taylor & Francis Group 8 (2003) 4, 347-360
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15
Auditory processing and the development of language and literacy
Bailey, Peter J; Snowling, Margaret J. - : Oxford University Press, 2002
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16
Rapid auditory processing and phonological ability in normal readers and readers with dyslexia
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 44 (2001) 4, 925-940
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17
Language - Articles and Reports - Rapid Auditory Processing and Phonological Ability in Normal Readers and Readers With Dyslexia
In: Journal of speech, language, and hearing research. - Rockville, Md. : American Speech-Language-Hearing Association 44 (2001) 4, 925
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18
Auditory spatial attention using interaural time differences
In: Journal of experimental psychology. Human perception and performance. - Washington, DC [u.a.] : Assoc. 26 (2000) 2, 717-729
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19
Frequency acuity and binaural masking release in dyslexic listeners
In: Acoustical Society of America. The journal of the Acoustical Society of America. - Melville, NY : AIP 106 (1999) 6, L53-L58
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20
Remediating a speech perception deficit in an aphasic patient
In: Aphasiology. - London [u.a.] : Routledge, Taylor & Francis Group 10 (1996) 2, 137-158
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