{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T14:11:16Z","timestamp":1784815876023,"version":"3.55.0"},"reference-count":49,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T00:00:00Z","timestamp":1784678400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Hum. Neurosci."],"abstract":"<jats:p>This report summarizes data collected over the span of more than a decade from four laboratories on the sound quality of cochlear implants. Sixteen projects (ten published and six unpublished) are summarized; two video and eleven audio files accompany the summaries. Fourteen of the projects used single sided deaf patients (SSD) fit with an implant (CI) as listeners; one project used SSD-CI patients with preserved hearing (HP) in their implanted ear; one project used conventional CI patients. Approximately a third of the SSD-CI patients could create close matches to CI sound quality. The matches varied as a function of electrode length. Patients fit with shorter electrode arrays used upshifted formant frequencies and\/or voice pitch and spectral smearing to match sound quality. Approximately half of the patients with longer electrode arrays used low- or band-pass filtering, spectral smearing and\/or pitch contour flattening to match sound quality. Other patients chose very few modifications \u2013 these signals were relatively clean. For the SSD-CI\/HP patients, stimulation directed to both the CI and acoustic hearing was characterized, relative to stimulation directed only to the CI, by one or more of the following: (i) a lower F0, (ii) a less flattened F0 contour, (iii) less upshift in formant frequencies, (iv) less smear, and (v) fewer instances of high-pass filtering. The final project established that muffled sound quality could be reduced by including an input gain for mid frequencies.<\/jats:p>","DOI":"10.3389\/fnhum.2026.1818601","type":"journal-article","created":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T14:00:09Z","timestamp":1784815209000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Ten years of research on the sound quality of cochlear implants"],"prefix":"10.3389","volume":"20","author":[{"given":"Michael F.","family":"Dorman","sequence":"first","affiliation":[{"name":"Arizona State University, College of Health Solutions","place":["Tempe, AZ, United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah C.","family":"Natale","sequence":"additional","affiliation":[{"name":"Arizona State University, College of Health Solutions","place":["Tempe, AZ, United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joshua S.","family":"Stohl","sequence":"additional","affiliation":[{"name":"MED-EL North American Research Laboratory","place":["Durham, NC, United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,7,22]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"1119","DOI":"10.3389\/fnins.2019.01119","article-title":"Pitch matching in cochlear implant users with single-sided deafness: effects of electrode position and acoustic stimulus type","volume":"13","author":"Adel","year":"2019","journal-title":"Front. 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