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  • 1
    Online Resource
    Online Resource
    Auditory inspired machine learning techniques can improve speech intelligibility and quality for hearing-impaired listeners
    Acoustical Society of America (ASA) ; 2017
    In:  The Journal of the Acoustical Society of America Vol. 141, No. 3 ( 2017-03-01), p. 1985-1998
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 141, No. 3 ( 2017-03-01), p. 1985-1998
    Abstract: Machine-learning based approaches to speech enhancement have recently shown great promise for improving speech intelligibility for hearing-impaired listeners. Here, the performance of three machine-learning algorithms and one classical algorithm, Wiener filtering, was compared. Two algorithms based on neural networks were examined, one using a previously reported feature set and one using a feature set derived from an auditory model. The third machine-learning approach was a dictionary-based sparse-coding algorithm. Speech intelligibility and quality scores were obtained for participants with mild-to-moderate hearing impairments listening to sentences in speech-shaped noise and multi-talker babble following processing with the algorithms. Intelligibility and quality scores were significantly improved by each of the three machine-learning approaches, but not by the classical approach. The largest improvements for both speech intelligibility and quality were found by implementing a neural network using the feature set based on auditory modeling. Furthermore, neural network based techniques appeared more promising than dictionary-based, sparse coding in terms of performance and ease of implementation.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4977197
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2017
    detail.hit.zdb_id: 1461063-2
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  • 2
    Online Resource
    Online Resource
    The effect of tone hyperarticulation in Cantonese infant-directed speech on toddlers’ word recognition in the second year of life
    SAGE Publications ; 2022
    In:  First Language Vol. 42, No. 5 ( 2022-10), p. 670-692
    Details
    In: First Language, SAGE Publications, Vol. 42, No. 5 ( 2022-10), p. 670-692
    Abstract: The acoustic properties of infant-directed speech (IDS) have been widely studied, but whether and how young learners’ language development benefits from individual properties remains to be confirmed. This study investigated whether toddlers’ word processing was affected by tone hyperarticulation in the IDS of a tone language. Nineteen- and 23-month-old Cantonese-learning toddlers completed a familiar word recognition task and were tested (a) in the hyperarticulated-tone (HT) condition in which the tonal distances were exaggerated, and (b) in the non-hyperarticulated-tone (NT) condition with smaller tonal distances that resembled those in adult-directed speech. The 19-month-old toddlers performed significantly better in the HT condition than in the NT condition, while the 23-month-olds performed comparably well in both conditions. These findings suggest that tone language learners’ word recognition can be facilitated by tone hyperarticulation in IDS, in the middle of the second year of life; as their language development proceeds, this facilitatory effect appears to largely diminish by the end of the second year of life.
    Type of Medium: Online Resource
    ISSN: 0142-7237 , 1740-2344
    URL: Article
    DOI: 10.1177/01427237221109342
    RVK:
    EQ 1000
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2124155-7
    SSG: 7,11
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  • 3
    Online Resource
    Online Resource
    The form and function processing of lexical tone and intonation in tone-language-speaking children with autism spectrum disorder
    Acoustical Society of America (ASA) ; 2023
    In:  The Journal of the Acoustical Society of America Vol. 154, No. 1 ( 2023-07-01), p. 467-481
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 154, No. 1 ( 2023-07-01), p. 467-481
    Abstract: Studies on how the form versus function aspect of tone and intonation is processed by autistic individuals have mainly focused on speakers of non-tonal languages (e.g., English) with equivocal results. While the samples' heterogeneous cognitive abilities may be contributing factors, the phenotype of tone and intonation processing in autism may also vary with one's language background. Thirty-eight cognitively able autistic and 32 non-autistic Mandarin-speaking children completed tone and intonation perception tasks, each containing a function and form condition. Results suggested that the abilities to discriminate tone and intonation were not impaired at either the form or function level in these autistic children, and that these abilities were positively associated with one another in both autistic and non-autistic groups. The more severe the autism symptoms, the worse the form- and function-level of tone and intonation processing. While enhanced tone and intonation processing has been found in a subgroup of autistic children, it may not be a general characteristic of the autistic population with long-term tone language experience. These findings reveal typical tone and intonation processing at both the form and function levels in cognitively able Mandarin-speaking autistic children and provide evidence for associated tone and intonation processing abilities across levels.
    Type of Medium: Online Resource
    ISSN: 0001-4966
    URL: Article
    DOI: 10.1121/10.0020271
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2023
    detail.hit.zdb_id: 1461063-2
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  • 4
    Online Resource
    Online Resource
    Acoustic performance of a duct loaded with identical resonators
    Acoustical Society of America (ASA) ; 2012
    In:  The Journal of the Acoustical Society of America Vol. 131, No. 4 ( 2012-04-01), p. EL316-EL322
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 131, No. 4 ( 2012-04-01), p. EL316-EL322
    Abstract: This paper presents a theoretical study of a duct loaded with identical side-branch resonators. The Bloch wave theory and the transfer matrix method are used to investigate wave propagation in the duct. It is found that this duct-resonator system has a unique attenuation characteristic brought about by structural periodicity. Three types of stop-bands are discussed and their bandwidths are predicted. All of the results predicted by the theory fit well with a computer simulation using a three-dimensional finite element method. Compared to a single resonator, this structure may have a potential application in broadband noise control.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.3691826
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2012
    detail.hit.zdb_id: 1461063-2
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  • 5
    Online Resource
    Online Resource
    Looking Backward, Looking Forward: MLA Members Speak
    Modern Language Association (MLA) ; 2000
    In:  PMLA/Publications of the Modern Language Association of America Vol. 115, No. 7 ( 2000-12), p. 1986-2078
    Details
    In: PMLA/Publications of the Modern Language Association of America, Modern Language Association (MLA), Vol. 115, No. 7 ( 2000-12), p. 1986-2078
    Type of Medium: Online Resource
    ISSN: 0030-8129 , 1938-1530
    URL: Article
    DOI: 10.2307/463623
    RVK:
    EA 1000
    Language: English
    Publisher: Modern Language Association (MLA)
    Publication Date: 2000
    detail.hit.zdb_id: 2439580-8
    detail.hit.zdb_id: 209526-9
    detail.hit.zdb_id: 2066864-8
    SSG: 7,11
    SSG: 7,24
    SSG: 7,12
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  • 6
    Online Resource
    Online Resource
    Nonperturbative modal tomography inversion. Part II. Numerical simulation
    Acoustical Society of America (ASA) ; 1995
    In:  The Journal of the Acoustical Society of America Vol. 98, No. 1 ( 1995-07-01), p. 560-569
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 98, No. 1 ( 1995-07-01), p. 560-569
    Abstract: In a previous paper [Jones et al., J. Acoust. Soc. Am. 94, 2296–2302 (1993)], it has been shown that implementation of nonperturbative modal ocean acoustic tomography based on the Abel transform requires only to determine an integer Nm0 (equal to the number of convergence zones between the source and receiver) from modal travel time and modal phase difference measurements. This integer Nm0 can be estimated by using climatological data or by using a ‘‘dual point’’ measurement scheme for a range-independent case as proposed in this paper. Numerical simulations of inversions both for a range-independent (RI) case and a range-dependent (RD) case are presented. Finally, the error of the Abel transform inversion is discussed.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.413648
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1995
    detail.hit.zdb_id: 1461063-2
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  • 7
    Online Resource
    Online Resource
    Comparison of auralized and measured sound in moderately reverberant spaces.
    Acoustical Society of America (ASA) ; 2009
    In:  The Journal of the Acoustical Society of America Vol. 125, No. 4_Supplement ( 2009-04-01), p. 2585-2585
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 125, No. 4_Supplement ( 2009-04-01), p. 2585-2585
    Abstract: This research performs an in-depth comparison of sound from computer auralizations with measured binaural room impulse responses and recordings taken in actual spaces. Binaural measurements and recordings have been gathered in two church naves with midfrequency reverberation times of about 1.5 and 2.5 s. The results from these measurements are compared with auralizations from computer models of the spaces in two different room acoustic modeling programs. The source and receiver positions used for the auralizations are the same as those measured in the real spaces. One of the naves was previously investigated [R.C. Coffeen and G. Caunt, J. Acoust. Soc. Am. 105, 1174 (1999) (A)] with results from computer auralizations compared to measured binaural recordings in the space. As numerous advancements have been made to computer modeling programs since that time, this project revisits and expands the previous research using updated modeling and measurement techniques. The results of this research not only portray the developments in computer modeling that have occurred over the past decade, but also depict the relationship between current computer auralizations and actual sound in moderately reverberant spaces.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4783823
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2009
    detail.hit.zdb_id: 1461063-2
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  • 8
    Online Resource
    Online Resource
    Auralization of an orchestra with phase-shifted string sections
    Acoustical Society of America (ASA) ; 2008
    In:  The Journal of the Acoustical Society of America Vol. 123, No. 5_Supplement ( 2008-05-01), p. 3568-3568
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 123, No. 5_Supplement ( 2008-05-01), p. 3568-3568
    Abstract: Orchestra auralizations have been created in ODEON using multi-channel individual instrument anechoic recordings of two symphonies; however, only one or two string instruments were recorded to represent each string section. To simulate the chorus effect of an entire string section more accurately, the anechoic tracks of the single string instruments have been mixed with other versions of the same signal, each with some phase shift in time. Two groups of phase shifts were used: one with shorter delays of up to 23 ms, and one with longer delays of up to 47 ms. A maximum of seven differently phase-shifted signals were combined with the original to create a final anechoic recording for use in the auralizations, depending on the number of players each source represented. Using paired comparisons, test subjects were asked to identify the auralization that sounded most similar to the experience of listening to an orchestra in an actual concert hall: one having none, short or long phase-shifts. Results show that subjects have difficulty differentiating between these three types of auralizations, indicating that phase shifting may not be required for such multi-source multi-channel orchestra auralizations. [Work supported by the National Science Foundation.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.2934631
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2008
    detail.hit.zdb_id: 1461063-2
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  • 9
    Online Resource
    Online Resource
    Relations between acoustic quality and student achievement in K-12 classrooms
    Acoustical Society of America (ASA) ; 2017
    In:  The Journal of the Acoustical Society of America Vol. 141, No. 5_Supplement ( 2017-05-01), p. 3966-3966
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 141, No. 5_Supplement ( 2017-05-01), p. 3966-3966
    Abstract: Prior work by Ronsse and Wang (2013) found that, in elementary schools, higher unoccupied background noise levels do correlate to lower student achievement scores in reading comprehension, but that study did not include detailed logs of acoustic conditions taken during the school day nor did it investigate middle or high school classrooms. More recently, measurements of the indoor environmental conditions in 110 K-12 classrooms, logged over a period of two weekdays three times seasonally, were taken over the 2015-16 academic year. Assorted acoustic metrics have been calculated from the raw measurements and a confirmatory factor analysis has been conducted to statistically create a comprehensive construct of “acoustic quality” that includes three general components: room characteristics (including reverberation times), occupied noise levels, and unoccupied noise levels. Standardized test scores of students who learned in the measured classrooms that year have also been gathered as an indicator of student achievement. Results from a structural equation model are presented to show how the various components of the proposed acoustic quality construct relate to student achievement. [Work supported by the United States Environmental Protection Agency Grant Number R835633.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4989032
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2017
    detail.hit.zdb_id: 1461063-2
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  • 10
    Online Resource
    Online Resource
    Statistically defining the construct of “acoustic quality” in K-12 classrooms
    Acoustical Society of America (ASA) ; 2016
    In:  Journal of the Acoustical Society of America Vol. 140, No. 4_Supplement ( 2016-10-01), p. 2946-2946
    Details
    In: Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 140, No. 4_Supplement ( 2016-10-01), p. 2946-2946
    Abstract: This paper presents preliminary statistical analyses of acoustic measurements taken in over a hundred K-12 classrooms in Nebraska during the 2015-2016 academic year. Noise levels were continuously logged over two consecutive school days, three times seasonally. Other measurements included unoccupied background noise levels and room impulse responses. Equivalent sound pressure levels, percentile levels, reverberation times, and other assorted room acoustic metrics have been calculated from the measured data. Preliminary statistical analyses have been performed to investigate how each metric is related to each other and how the metrics are distributed across classrooms. These quantities have also been statistically analyzed to understand which are most pertinent to a comprehensive construct of “acoustic quality.” This “acoustic quality” construct will subsequently be used to investigate how its components are related to the academic performance of students, and its inter-relationships with other environmental conditions such as indoor air quality, thermal, and lighting conditions. [Work supported by the United States Environmental Protection Agency Grant Number R835633.]
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4969096
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2016
    detail.hit.zdb_id: 1461063-2
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