{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,7]],"date-time":"2026-02-07T04:39:49Z","timestamp":1770439189625,"version":"3.49.0"},"reference-count":39,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[1994,1,1]],"date-time":"1994-01-01T00:00:00Z","timestamp":757382400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Otolaryngol.--head neck surg."],"published-print":{"date-parts":[[1994,1]]},"abstract":"<jats:p>Two experiments were conducted to examine the intelligibility of 72 passages of connected discourse prepared by Cox and McDaniel<jats:sup>1,2<\/jats:sup> in their development of the Speech Intelligibility Rating (SIR) test. Intelligibility was assessed with a method\u2010of\u2010adjustment (MOA) procedure in which listeners adjusted the level of a multi\u2010talker babble until they could just understand 50% of a passage; the measure of intelligibility was the signal\u2010to\u2010babble ratio, dB S\/B. The objective was to develop a Revised Speech Intelligibility Rating (RSIR) test that would comprise a large number of equivalent passages that produce reliable intelligibility measures. In experiment 1, the S\/B ratio was based on the overall root\u2010mean\u2010square (rms) levels of speech and babble, as represented by the average level of frequent peaks observed on a VU meter. Across all 72 passages, mean intelligibility was \u22121.43\u00a0dB S\/B, and the measure of intelligibility for 42 passages was within \u00b10.5\u00a0dB of the overall mean for all 72 passages. In experiment 2, the S\/B ratio was based on long\u2010term rms levels of speech and babble measured in 16 one\u2010third\u2010octave bands, with center frequencies from 160 to 5000\u00a0Hz. In an effort to achieve greater equivalence in intelligibility among passages, the overall rms level of each passage was attenuated by the difference between SB<jats:sub>16\u2010band<\/jats:sub> for an individual passage and S\/B<jats:sub>16\u2010band<\/jats:sub> for a reference passage. Mean intelligibility across all 72 passages was \u2014 8.06\u00a0dB, and the measure of intelligibility was within \u00b10.5\u00a0dB of the overall mean for 64 of the 72 passages. For those 64 passages, the 95% critical difference for five MOAs was 0.72\u00a0dB, which corresponds to an estimated percentage critical difference Of 10.8%.<\/jats:p>","DOI":"10.1177\/019459989411000109","type":"journal-article","created":{"date-parts":[[2015,11,25]],"date-time":"2015-11-25T06:51:26Z","timestamp":1448434286000},"page":"75-83","source":"Crossref","is-referenced-by-count":6,"title":["A revised speech intelligibility rating (rsir) test: Listeners with normal hearing"],"prefix":"10.1002","volume":"110","author":[{"given":"Charles","family":"Speaks","sequence":"first","affiliation":[{"name":"Department of Communication Disorders University of Minnesota Minneapolis Minnesota"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Timothy D.","family":"Trine","sequence":"additional","affiliation":[{"name":"Department of Communication Disorders University of Minnesota Minneapolis Minnesota"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas 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