| Download | - View accepted manuscript: Evaluating signal-to-noise ratios, loudness, and related measures as indicators of airborne sound insulation (PDF, 739 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1121/1.3192347 |
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| Author | Search for: Park, H. K.1; Search for: Bradley, J. S.1 |
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| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
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| Format | Text, Article |
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| Subject | responses to sounds; signal processing; regression analysis; covariance and correlation; room acoustics; sound transmission class; speech sounds; acoustic nois; speech communication; speech intelligibility |
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| Abstract | 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 (Rw) and variations of these measures [H. K. Park and J. S. Bradley, J. Acoust. Soc. Am. 126, 208–219 (2009)]. 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 addition of new spectrum adaptation terms to Rw values were found to be the most practical approach for achieving more accurate predictions of subjective ratings of transmitted speech and music sounds. |
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| Publication date | 2009-09-09 |
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| Publisher | Acoustical Society of America |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 53567
NRC-IRC-21239 |
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| NPARC number | 20329228 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 36e1a11c-2223-4721-9ce4-6a3297a3bc0d |
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| Record created | 2012-07-18 |
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| Record modified | 2020-06-04 |
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