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Recordings of speech in quiet and in noise were made with Knowles Electronic Manikin for Acoustic Research wearing bilateral in-the-ear hearing aids with microphones having adjustable directivity (omnidirectional, cardioid, hypercardioid, supercardioid). Signals were generated from 16 locations in a circular array. Sound direction identification performance of eight normal hearing listeners and eight hearing-impaired listeners revealed that directional microphones did not degrade localization performance and actually reduced the front\u2013back and lateral localization errors made when listening through omnidirectional microphones. The summed rms speech level for the signals entering the two ears appear to serve as a cue for making front\u2013back discriminations when using directional microphones in the experimental setting. The results of this study show that the use of matched directional microphones when worn bilaterally do not have a negative effect on the ability to localize speech in the horizontal plane and may thus be useful in HPD design.<\/jats:p>","DOI":"10.1121\/1.2883744","type":"journal-article","created":{"date-parts":[[2008,4,8]],"date-time":"2008-04-08T00:11:56Z","timestamp":1207613516000},"page":"2264-2275","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":14,"title":["Effects of in-the-ear microphone directionality on sound direction identification"],"prefix":"10.1121","volume":"123","author":[{"given":"King","family":"Chung","sequence":"first","affiliation":[{"name":"Lexington Center for the Deaf , Flushing, New York 11370"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arlene C.","family":"Neuman","sequence":"additional","affiliation":[{"name":"City University of New York The Graduate Center, , New York, New York 10036"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Higgins","sequence":"additional","affiliation":[{"name":"City University of New York The Graduate Center, , New York, New York 10036"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","reference":[{"key":"2023080303242045700_c1","first-page":"357","article-title":"Sound localization with hearing protectors","volume":"22","year":"1993","journal-title":"J. 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