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Vibratory-coded directional analysis: Evaluation of a three-microphone/four-vibrator DSP system
Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Institutet för handikappvetenskap (IHV). Linköpings universitet, Institutionen för beteendevetenskap och lärande, Handikappvetenskap.ORCID-id: 0000-0001-7311-9959
Orebro Med Ctr Hosp, Ahlsen Res Inst, S-70185 Orebro, Sweden Karolinska Inst, Dept Physiol & Pharmacol, S-17177 Stockholm, Sweden Linkoping Univ, Dept Behav Sci, S-58183 Linkoping, Sweden Hitech Dev AB Aldermansvagen, S-17148 Solna, Sweden.
2001 (Engelska)Ingår i: Journal of rehabilitation research and development, ISSN 0748-7711, E-ISSN 1938-1352, Vol. 38, nr 2, s. 257-263Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A sound localization aid based on eyeglasses with three microphones and four vibrators was tested in a sound-treated acoustic test room and in an ordinary office. A digital signal-processing algorithm provided a determination of the source angle, which was transformed into eight vibrator codes each corresponding to a 45 degrees sector. The instrument was tested on nine deaf and three deaf-blind individuals. The results show an average hit rate of about 80% in a sound-treated room with 100% for the front 135 degrees sector. The results in a realistic communication situation in an ordinary office room were 70% correct based on single presentations and 95% correct when more realistic criteria for an adequate reaction were used. Ten of the twelve subjects were interested in participating in field tests using a planned miniaturized version.

Ort, förlag, år, upplaga, sidor
2001. Vol. 38, nr 2, s. 257-263
Nyckelord [en]
digital signal processing, directional aid, sound localization
Nationell ämneskategori
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Identifikatorer
URN: urn:nbn:se:liu:diva-49253OAI: oai:DiVA.org:liu-49253DiVA, id: diva2:270149
Tillgänglig från: 2009-10-11 Skapad: 2009-10-11 Senast uppdaterad: 2021-12-28

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Rönnberg, Jerker

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Filosofiska fakultetenInstitutet för handikappvetenskap (IHV)Handikappvetenskap
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Journal of rehabilitation research and development
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