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  • 1
    In: Nature Neuroscience, Springer Science and Business Media LLC, Vol. 22, No. 8 ( 2019-8), p. 1223-1234
    Type of Medium: Online Resource
    ISSN: 1097-6256 , 1546-1726
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2019
    detail.hit.zdb_id: 1494955-6
    SSG: 12
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  • 2
    Online Resource
    Online Resource
    Wissenschaftliche Verlagsgesellschaft mbH ; 2018
    In:  Acta Acustica united with Acustica Vol. 104, No. 5 ( 2018-09-01), p. 821-824
    In: Acta Acustica united with Acustica, Wissenschaftliche Verlagsgesellschaft mbH, Vol. 104, No. 5 ( 2018-09-01), p. 821-824
    Type of Medium: Online Resource
    ISSN: 1610-1928
    Language: English
    Publisher: Wissenschaftliche Verlagsgesellschaft mbH
    Publication Date: 2018
    detail.hit.zdb_id: 119-3
    detail.hit.zdb_id: 2078656-6
    SSG: 7,11
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  • 3
    Online Resource
    Online Resource
    Elsevier BV ; 2007
    In:  Speech Communication Vol. 49, No. 12 ( 2007-12), p. 892-904
    In: Speech Communication, Elsevier BV, Vol. 49, No. 12 ( 2007-12), p. 892-904
    Type of Medium: Online Resource
    ISSN: 0167-6393
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2007
    detail.hit.zdb_id: 625711-2
    detail.hit.zdb_id: 1460279-9
    SSG: 7,11
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  • 4
    Online Resource
    Online Resource
    Acoustical Society of America (ASA) ; 2008
    In:  The Journal of the Acoustical Society of America Vol. 123, No. 5_Supplement ( 2008-05-01), p. 3295-3295
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 123, No. 5_Supplement ( 2008-05-01), p. 3295-3295
    Abstract: When masking speech is present, pre-presentation of early part of nonsense target speech improves recognition of the rest of target speech, indicating a content and/or voice priming effect (Freyman et al., 2004; Yang et al., 2007). Here, we examined both the prime-length effect and the prime-position effect on recognition of nonsense target speech with twelve syllables and three keywords. Target speech started 1 sec. after the onset of two-talker masking speech. The results show that a longer prime with 10 syllables (including the 1st and 2nd keywords) significantly improved recognition of the last (3rd) keyword in target speech. However, when the 1st four syllables (including the 1st keyword) were pre-presented, recognition of either the 2nd or 3rd keyword was not improved. Interestingly, when the 2nd four syllables (including the 2nd keyword) were pre-presented, recognition of the 1st but not the 3rd keyword was significantly improved. Thus under speech-on-speech masking conditions, both the prime length and the prime position in the sentence influence the priming effect on recognition of target speech, and listeners contribute more attentional resource to the initial part of target speech. Supported by the National Natural Science Foundation of China.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    RVK:
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2008
    detail.hit.zdb_id: 1461063-2
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  • 5
    Online Resource
    Online Resource
    Acoustical Society of America (ASA) ; 2006
    In:  The Journal of the Acoustical Society of America Vol. 120, No. 5_Supplement ( 2006-11-01), p. 3341-3342
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 120, No. 5_Supplement ( 2006-11-01), p. 3341-3342
    Abstract: Before an English speech sentence is presented, hearing or reading the sentence without the last key word improves recognition of the last key word if the full-length speech sentence is presented under speech masking but not under noise masking. This phenomenon suggests a content priming effect on releasing speech from informational masking. To determine whether the priming effect extends to tonal Chinese speech, and, in particular, whether it can be induced by the target talkers voice, in the present study, listeners were presented with either same-voice/different-sentence primes or same-voice/same-sentence primes before hearing the target sentence in either two-talker-speech masking or noise masking. Under speech masking, each of the two prime types significantly improved recognition of the last key word in the full-length target sentence, but the content priming is stronger than the voice priming. Under noise masking, same-voice/same-sentence primes had a weak but significant priming effect, but same-voice/different-sentence primes had only a negligible priming effect. These results suggest that both content and voice cues can be used by listeners to release Chinese speech from informational masking, but only content cues are useful for releasing Chinese speech from energetic masking. [Work supported by China NSF and Canadian IHR.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    RVK:
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2006
    detail.hit.zdb_id: 1461063-2
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  • 6
    In: Information Sciences, Elsevier BV, Vol. 530 ( 2020-08), p. 167-179
    Type of Medium: Online Resource
    ISSN: 0020-0255
    RVK:
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2020
    detail.hit.zdb_id: 218760-7
    detail.hit.zdb_id: 1478990-5
    SSG: 24,1
    SSG: 7,11
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  • 7
    Online Resource
    Online Resource
    Acoustical Society of America (ASA) ; 2019
    In:  The Journal of the Acoustical Society of America Vol. 146, No. 1 ( 2019-07-01), p. 445-457
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 146, No. 1 ( 2019-07-01), p. 445-457
    Abstract: Speech material influences the relative contributions of different frequency regions to intelligibility for English. In the current study, whether a similar effect of speech material is present for Mandarin Chinese was investigated. Speech recognition was measured using three speech materials in Mandarin, including disyllabic words, nonsense sentences, and meaningful sentences. These materials differed from one another in terms of the amount of contextual information and word frequency. The band importance function (BIF), as defined under the Speech Intelligibility Index (SII) framework, was used to quantify the contributions across frequency regions. The BIFs for the three speech materials were estimated from 16 adults who were native speakers of Mandarin. A Bayesian adaptive procedure was used to efficiently estimate the octave-frequency BIFs for the three materials for each listener. As the amount of contextual information increased, low-frequency bands (e.g., 250 and 500 Hz) became more important for speech recognition, consistent with English. The BIF was flatter for Mandarin than for comparable English speech materials. Introducing the language- and material-specific BIFs to the SII model led to improved predictions of Mandarin speech-recognition performance. Results suggested the necessity of developing material-specific BIFs for Mandarin.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    RVK:
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2019
    detail.hit.zdb_id: 1461063-2
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  • 8
    Online Resource
    Online Resource
    Acoustical Society of America (ASA) ; 2017
    In:  The Journal of the Acoustical Society of America Vol. 141, No. 5_Supplement ( 2017-05-01), p. 4032-4033
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 141, No. 5_Supplement ( 2017-05-01), p. 4032-4033
    Abstract: To study the role of F0 contour on speech intelligibility for Mandarin Chinese, speech reception thresholds (SRTs) of mono-tone speech and multi-tone speech were measured both in steady speech-spectrum noise (SSN) and in two-talkers’ speech (TTS). The effect of informational masking (IM) in TTS masking was also examined. The mono-tone speech was produced by mono-tone sentences, which only consisted of syllables with tone 1 or tone 0. All sentences used in this study were grammatically correct but semantically anomalous to avoid the effect of sentence context. The type of TTS maskers was also manipulated as mono-tone or multi-tone. The results revealed: 1) For SSN masking, there was no significant difference between the mono-tone speech and the multi-tone speech (-7.8 dB vs. -7.3 dB on SRTs), indicating a weak effect of altering F0 contour at the sentence level. 2) However, for TTS masking, the intelligibility of multi-tone speech in multi-tone masking was significantly difficult (2 dB increase for SRT) than other conditions, indicating an important role of F0 contour in IM. These results were different from the corresponding reports for English speech, and the characteristics of F0 contour and language were analyzed and discussed. [supported by a NSFC grant 61473008.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    RVK:
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2017
    detail.hit.zdb_id: 1461063-2
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  • 9
    Online Resource
    Online Resource
    Acoustical Society of America (ASA) ; 2006
    In:  The Journal of the Acoustical Society of America Vol. 120, No. 5_Supplement ( 2006-11-01), p. 3127-3127
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 120, No. 5_Supplement ( 2006-11-01), p. 3127-3127
    Abstract: In this study, speech targets were nonsense sentences spoken by a Chinese female, and speech maskers were nonsense sentences spoken by other one, two, three, or four Chinese females. All stimuli were presented by two spatially separated loudspeakers. Using the precedence effect, manipulation of the delay between the two loudspeakers for the masker determined whether the target and masker were perceived as coming from the same or different locations. The results show that the one-talker masker produced the lowest masking effect on Chinese speech. When the number of masking talkers increased progressively to 2, 3, and 4, even though informational masking progressively decreased, energetic masking progressively increased, leading to an increased total masking effect on targets. A new form of calculation of the speech intelligibility index confirmed an increase of energetic masking as the masking-talker number increased, even when the long-term average signal-to-noise ratio was unchanged. Some differences between Chinese speech masking and English speech masking were revealed by this study. [Work supported by China NSF and Canadian IHR.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    RVK:
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2006
    detail.hit.zdb_id: 1461063-2
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  • 10
    Online Resource
    Online Resource
    Acoustical Society of America (ASA) ; 2005
    In:  The Journal of the Acoustical Society of America Vol. 117, No. 4_Supplement ( 2005-04-01), p. 2537-2538
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 117, No. 4_Supplement ( 2005-04-01), p. 2537-2538
    Abstract: Physical or perceived spatial signal/masker separation unmasks speech more when maskers are informational than when energetic. However, it is unclear how beneficial the separations are to cochlear-implant listeners, because signal transductions applied in cochlear implant degrade signals spectrally, and spectrally degraded speech is more vulnerable to maskers. Here, spectrums of both target speech (nonsense sentence) and masker (steady speech-spectrum noise, speech modulated speech C-spectrum noise, or speech) were filtered into 15 frequency bands. For both target and masking speech, the center-frequency pure tone of each band was modulated by the extracted envelope from the band. The target speech was composed by the sum of the 8 odd-band tones, and the masker was either same-band (with the 8 odd-band tones) or different-band (with the 7 even-band tones). The results show that physical but not perceived spatial separation unmasked target speech in naive normal-hearing listeners. However, following pre-presentations of both degraded and normal correspondent speech to listeners for a period of time or the introduction of phase information into modulated tones, perceived spatial separation reduced the influence of different-band speech masking but not that of same-band speech masking. These results are useful for improving cochlear-implant programs at both behavioral and technical levels.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    RVK:
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2005
    detail.hit.zdb_id: 1461063-2
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