Evaluating airborne sound insulation in terms of speech intelligibility

Park, H. K.; Bradley, John S.; Gover, Bradford N.

doi:10.1121/1.2831736

Cited by 22 publications

(35 citation statements)

References 11 publications

(20 reference statements)

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“…The correlations with the speech intelligibility scores, 7,8 from the previous study, have a narrower range of maximum values, which extends from about 250 to 2000 Hz. These differences indicate that annoyance and loudness ratings of speech sounds are influenced by a wider range of frequencies than were speech intelligibility scores.…”

Section: A More Important Frequencies For Tl Datamentioning

confidence: 99%

“…7,8 As in Fig. 1, the standard deviations of the TL values are also plotted to make possible further comparisons.…”

Section: A More Important Frequencies For Tl Datamentioning

confidence: 99%

“…An earlier investigation evaluated speech intelligibility scores of transmitted speech sounds as ratings of the airborne sound insulation of walls. 7,8 Measures intended to relate to speech intelligibility scores were found to be quite successful predictors of sound insulation, when rated in terms of the intelligibility of the transmitted speech. These measures included the articulation index ͑AI͒, 9 the speech intelligibility index ͑SII͒, 10 and the articulation class ͑AC͒, 11 as well as a number of related quantities.…”

Section: Introductionmentioning

confidence: 99%

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Evaluating signal-to-noise ratios, loudness, and related measures as indicators of airborne sound insulation

Park

Bradley

2009

The Journal of the Acoustical Society of America

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1121/1.3192347Journal of the Acoustical Society of America, 126, 3, pp. 1219America, 126, 3, pp. -1230America, 126, 3, pp. , 2009 Evaluating signal-to-noise ratios, loudness, and related measures as indicators of airborne sound insulation Park, H. K.; Bradley, J. S. The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. For more information visit http://laws.justice.gc.ca/en/showtdm/cs/C-42Les renseignements dans ce document sont protégés par la Loi sur le droit d'auteur, par les lois, les politiques et les règlements du Canada et des accords internationaux. Ces dispositions permettent d'identifier la source de l'information et, dans certains cas, d'interdire la copie de documents sans permission écrite. Pour obtenir de plus amples renseignements : http://lois.justice.gc.ca/fr/showtdm/cs/C-42Evaluating signal-to-noise ratios, loudness, and related measures as indicators of airborne sound insulation Subjective ratings of the audibility, annoyance, and loudness of music and speech sounds transmitted through 20 different simulated walls were used to identify better single number ratings of airborne sound insulation. The first part of this research considered standard measures such as the sound transmission class the weighted sound reduction index ͑R w ͒ and variations of these measures ͓H. K. Park and J. S. Bradley, J. Acoust. Soc. Am. 126, 208-219 ͑2009͔͒. This paper considers a number of other measures including signal-to-noise ratios related to the intelligibility of speech and measures related to the loudness of sounds. An exploration of the importance of the included frequencies showed that the optimum ranges of included frequencies were different for speech and music sounds. Measures related to speech intelligibility were useful indicators of responses to speech sounds but were not as successful for music sounds. A-weighted level differences, signal-to-noise ratios and an A-weighted sound transmission loss measure were good predictors of responses when the included frequencies were optimized for each type of sound. The additio...

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Section: A More Important Frequencies For Tl Datamentioning

confidence: 99%

“…7,8 As in Fig. 1, the standard deviations of the TL values are also plotted to make possible further comparisons.…”

Section: A More Important Frequencies For Tl Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluating signal-to-noise ratios, loudness, and related measures as indicators of airborne sound insulation

Park

Bradley

2009

The Journal of the Acoustical Society of America

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“…As Rasmussen has periodically documented 8 , even within "unified Europe" this has led to a bewildering array of national criteria, and many non-European countries have added further variants. One could make a strong case for the benefit of continuing recent research efforts in this area 9,10 , especially to assess the most suitable ratings to handle low frequency sound and special sources such as footsteps and building services (ventilation, plumbing, etc.) to establish a credible foundation for improved consensus standards.…”

Section: B Ratings and Subjective Criteriamentioning

confidence: 99%

Controlling air-borne and structure-borne sound in buildings

Quirt

2011

noise news int

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/npsi/ctrl?action=rtdoc&an=20374271&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=20374271&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. For more information visit http://laws.justice.gc.ca/en/showtdm/cs/C-42Les renseignements dans ce document sont protégés par la Loi sur le droit d'auteur, par les lois, les politiques et les règlements du Canada et des accords internationaux. Ces dispositions permettent d'identifier la source de l'information et, dans certains cas, d'interdire la copie de documents sans permission écrite. Pour obtenir de plus amples renseignements : http://lois.justice.gc.ca/fr/showtdm/cs/C-42 ABSTRACTIn recent years, the science and engineering for controlling sound transmission in buildings have shifted from a focus on individual assemblies such as walls or floors, to a focus on performance of the complete system. Standardized frameworks for calculating the overall transmission including structure-borne flanking, combined with standardized measurements to characterize sub-assemblies, have advanced these issues from research concepts to engineering practice in many countries. From studies of relatively homogeneous and isotropic constructions of concrete and masonry in the 1990's, the technology is now expanding to include the more complicated behavior of lightweight framed constructions. These advances in measurement-based calculations offer the potential for better design based on comprehensive prediction of sound transmission between units in multifamily buildings. To realize that potential, we still must overcome several challenges. First, the acoustical prediction tools must be suitable for designers who integrate the many aspects of building performance. Second, the acoustical metrics must properly reflect how occupants respond to transmitted sound from both typical airborne sources and impact sources such as footsteps. These concerns pose major challenges for the next decade -both for research and for implementation.

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“…Recent research (Gover, Bradley, 2004) had shown the intelligibility of speech from meeting rooms to be well related to frequency weighted signal to noise ratio suggesting possible new wall transmission loss ratings. The two most accurate predictors of the intelligibility of transmitted speech were an arithmetic average transmission loss over the frequencies from 200 Hz to 2.5 kHz and addition of a new spectrum weighting term to R w that included frequencies from 400 Hz to 2.5 kHz (Park et al, 2008a). An STC measure without an 8-dB rule and an R w rating with a new spectrum adaptation term were better predictors of annoyance and loudness ratings of speech sounds (Park, Bradley, 2009).…”

Section: Introductionmentioning

confidence: 99%

Technical Notes: Practical Concerns Associated with Single-Number Ratings in Measuring Sound Transmission Loss Properties of Partition Panels

Garg¹,

Kumar²,

Maji³

2013

Archives of Acoustics

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The paper presents an extensive review investigating the practical aspects related to the use of singlenumber ratings used in describing the sound insulation performance of partition wall panels and practical complications encountered in precise measurements in extensive frequency range from 50 Hz to 5 kHz. SWOT analysis of various single number ratings is described. A laboratory investigation on a double wall partition panel combination revealed the significant dependence of STC rating on transmission loss at 125 Hz attributed to 8 dB rule. An investigation conducted on devising alternative spectrums of aircraft noise, traffic noise, vehicular horn noise and elevated metro train noise as an extension to ISO 717-1 Ctr for ascertaining the sound insulation properties of materials exclusively towards these noise sources revealed that the single-number rating Rw + Ctr calculated using ISO 717-1 Ctr gives the minimum sound insulation, when compared with Rw + Cx calculated using the alternative spectrums of aircraft noise, traffic noise, etc., which means that material provides a higher sound insulation to the other noise sources. It is also observed that spectrum adaptation term Cx calculated using the spectrum of noise sources having high sound pressure levels in lower frequencies decreases as compared to ISO 717-1 Ctr owing to significant dependence of Ctr at lower frequencies.

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Evaluating airborne sound insulation in terms of speech intelligibility

Cited by 22 publications

References 11 publications

Evaluating signal-to-noise ratios, loudness, and related measures as indicators of airborne sound insulation

Evaluating signal-to-noise ratios, loudness, and related measures as indicators of airborne sound insulation

Controlling air-borne and structure-borne sound in buildings

Technical Notes: Practical Concerns Associated with Single-Number Ratings in Measuring Sound Transmission Loss Properties of Partition Panels

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