Two-microphone spatial filtering provides speech reception benefits for cochlear implant users in difficult acoustic environments
This article introduces and provides an assessment of a spatial-filtering algorithm based on two closely-spaced (∼1 cm) microphones in a behind-the-ear shell. The evaluated spatial-filtering algorithm used fast (∼10 ms) temporal-spectral analysis to determine the location of incoming sounds and to e...
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| Format: | Article |
| Language: | en_US |
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Acoustical Society of America (ASA)
2015
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| Online Access: | http://hdl.handle.net/1721.1/99892 https://orcid.org/0000-0002-8431-4730 https://orcid.org/0000-0003-2538-9991 https://orcid.org/0000-0003-2673-3889 |
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| author | Goldsworthy, Raymond L. Delhorne, Lorraine A. Desloge, Joseph G. Braida, Louis D. |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Goldsworthy, Raymond L. Delhorne, Lorraine A. Desloge, Joseph G. Braida, Louis D. |
| author_sort | Goldsworthy, Raymond L. |
| collection | MIT |
| description | This article introduces and provides an assessment of a spatial-filtering algorithm based on two closely-spaced (∼1 cm) microphones in a behind-the-ear shell. The evaluated spatial-filtering algorithm used fast (∼10 ms) temporal-spectral analysis to determine the location of incoming sounds and to enhance sounds arriving from straight ahead of the listener. Speech reception thresholds (SRTs) were measured for eight cochlear implant (CI) users using consonant and vowel materials under three processing conditions: An omni-directional response, a dipole-directional response, and the spatial-filtering algorithm. The background noise condition used three simultaneous time-reversed speech signals as interferers located at 90°, 180°, and 270°. Results indicated that the spatial-filtering algorithm can provide speech reception benefits of 5.8 to 10.7 dB SRT compared to an omni-directional response in a reverberant room with multiple noise sources. Given the observed SRT benefits, coupled with an efficient design, the proposed algorithm is promising as a CI noise-reduction solution. |
| first_indexed | 2024-09-23T09:30:07Z |
| format | Article |
| id | mit-1721.1/99892 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:30:07Z |
| publishDate | 2015 |
| publisher | Acoustical Society of America (ASA) |
| record_format | dspace |
| spelling | mit-1721.1/998922022-09-30T14:49:43Z Two-microphone spatial filtering provides speech reception benefits for cochlear implant users in difficult acoustic environments Goldsworthy, Raymond L. Delhorne, Lorraine A. Desloge, Joseph G. Braida, Louis D. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Research Laboratory of Electronics Delhorne, Lorraine A. Desloge, Joseph G. Braida, Louis D. This article introduces and provides an assessment of a spatial-filtering algorithm based on two closely-spaced (∼1 cm) microphones in a behind-the-ear shell. The evaluated spatial-filtering algorithm used fast (∼10 ms) temporal-spectral analysis to determine the location of incoming sounds and to enhance sounds arriving from straight ahead of the listener. Speech reception thresholds (SRTs) were measured for eight cochlear implant (CI) users using consonant and vowel materials under three processing conditions: An omni-directional response, a dipole-directional response, and the spatial-filtering algorithm. The background noise condition used three simultaneous time-reversed speech signals as interferers located at 90°, 180°, and 270°. Results indicated that the spatial-filtering algorithm can provide speech reception benefits of 5.8 to 10.7 dB SRT compared to an omni-directional response in a reverberant room with multiple noise sources. Given the observed SRT benefits, coupled with an efficient design, the proposed algorithm is promising as a CI noise-reduction solution. National Institutes of Health (U.S.) (Grant R01 DC 000117) National Institutes of Health (U.S.) (Grant R01 DC DC7152) National Institutes of Health (U.S.) (Grant 2R44DC010524-02) 2015-11-10T18:44:07Z 2015-11-10T18:44:07Z 2014-08 2014-06 Article http://purl.org/eprint/type/JournalArticle 0001-4966 http://hdl.handle.net/1721.1/99892 Goldsworthy, Raymond L., Lorraine A. Delhorne, Joseph G. Desloge, and Louis D. Braida. “Two-Microphone Spatial Filtering Provides Speech Reception Benefits for Cochlear Implant Users in Difficult Acoustic Environments.” J. Acoust. Soc. Am. 136, no. 2 (August 2014): 867–876. © 2014 Acoustical Society of America https://orcid.org/0000-0002-8431-4730 https://orcid.org/0000-0003-2538-9991 https://orcid.org/0000-0003-2673-3889 en_US http://dx.doi.org/10.1121/1.4887453 The Journal of the Acoustical Society of America Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Acoustical Society of America (ASA) Acoustical Society of America |
| spellingShingle | Goldsworthy, Raymond L. Delhorne, Lorraine A. Desloge, Joseph G. Braida, Louis D. Two-microphone spatial filtering provides speech reception benefits for cochlear implant users in difficult acoustic environments |
| title | Two-microphone spatial filtering provides speech reception benefits for cochlear implant users in difficult acoustic environments |
| title_full | Two-microphone spatial filtering provides speech reception benefits for cochlear implant users in difficult acoustic environments |
| title_fullStr | Two-microphone spatial filtering provides speech reception benefits for cochlear implant users in difficult acoustic environments |
| title_full_unstemmed | Two-microphone spatial filtering provides speech reception benefits for cochlear implant users in difficult acoustic environments |
| title_short | Two-microphone spatial filtering provides speech reception benefits for cochlear implant users in difficult acoustic environments |
| title_sort | two microphone spatial filtering provides speech reception benefits for cochlear implant users in difficult acoustic environments |
| url | http://hdl.handle.net/1721.1/99892 https://orcid.org/0000-0002-8431-4730 https://orcid.org/0000-0003-2538-9991 https://orcid.org/0000-0003-2673-3889 |
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