Propagation characteristics of amplitude-modulated bone-conducted ultrasound presented to the neck, trunk and arms
Bone-conducted ultrasound (BCU) is perceived even by the profoundly hearing impaired and a novel hearing aid has been developed. In the BCU hearing aid, the ultrasonic carrier is amplitude-modulated by speech signals and presented to the mastoid process of the temporal bone by a vibrator. However, B...
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| Veröffentlicht in: | Japanese Journal of Applied Physics 2019-07, Vol.58 (SG), p.SGGE18 |
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| container_title | Japanese Journal of Applied Physics |
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| creator | Nakagawa, Seiji Doi, Koichiro Ogino, Riki Otsuka, Sho |
| description | Bone-conducted ultrasound (BCU) is perceived even by the profoundly hearing impaired and a novel hearing aid has been developed. In the BCU hearing aid, the ultrasonic carrier is amplitude-modulated by speech signals and presented to the mastoid process of the temporal bone by a vibrator. However, BCU presented to parts of the body distant from the head can be perceived. In this study, vibration at the external auditory meatus was measured when amplitude-modulated BCU was presented to distal parts of the body. The results showed spectrum peaks corresponding to the carrier frequency (30 kHz) and the modulation frequency. The peak level of the carrier frequency tended to decrease depending on the distance between the external auditory meatus and the stimulation part basically. On the other hand, the peak level of the modulation frequency did not change with the distance between the external auditory meatus and the stimulation part, whereas the effect of modulation frequency was significant. |
| doi_str_mv | 10.7567/1347-4065/ab1fdb |
| format | Article |
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In the BCU hearing aid, the ultrasonic carrier is amplitude-modulated by speech signals and presented to the mastoid process of the temporal bone by a vibrator. However, BCU presented to parts of the body distant from the head can be perceived. In this study, vibration at the external auditory meatus was measured when amplitude-modulated BCU was presented to distal parts of the body. The results showed spectrum peaks corresponding to the carrier frequency (30 kHz) and the modulation frequency. The peak level of the carrier frequency tended to decrease depending on the distance between the external auditory meatus and the stimulation part basically. On the other hand, the peak level of the modulation frequency did not change with the distance between the external auditory meatus and the stimulation part, whereas the effect of modulation frequency was significant.</description><identifier>ISSN: 0021-4922</identifier><identifier>EISSN: 1347-4065</identifier><identifier>DOI: 10.7567/1347-4065/ab1fdb</identifier><identifier>CODEN: JJAPB6</identifier><language>eng</language><publisher>Tokyo: IOP Publishing</publisher><subject>Amplitudes ; Carrier frequencies ; Hearing aids ; Modulation ; Sensory stimulation ; Signal processing ; Ultrasonic imaging ; Ultrasound ; Vibration measurement ; Vibration perception</subject><ispartof>Japanese Journal of Applied Physics, 2019-07, Vol.58 (SG), p.SGGE18</ispartof><rights>2019 The Japan Society of Applied Physics</rights><rights>Copyright Japanese Journal of Applied Physics Jul 1, 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c408t-5c1428509171a2fff4321605c869ec76d141fcb0c830b440bb2b500351f9b353</citedby><cites>FETCH-LOGICAL-c408t-5c1428509171a2fff4321605c869ec76d141fcb0c830b440bb2b500351f9b353</cites><orcidid>0000-0002-9957-325X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.7567/1347-4065/ab1fdb/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,776,780,27901,27902,53821,53868</link.rule.ids></links><search><creatorcontrib>Nakagawa, Seiji</creatorcontrib><creatorcontrib>Doi, Koichiro</creatorcontrib><creatorcontrib>Ogino, Riki</creatorcontrib><creatorcontrib>Otsuka, Sho</creatorcontrib><title>Propagation characteristics of amplitude-modulated bone-conducted ultrasound presented to the neck, trunk and arms</title><title>Japanese Journal of Applied Physics</title><addtitle>Jpn. 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On the other hand, the peak level of the modulation frequency did not change with the distance between the external auditory meatus and the stimulation part, whereas the effect of modulation frequency was significant.</description><subject>Amplitudes</subject><subject>Carrier frequencies</subject><subject>Hearing aids</subject><subject>Modulation</subject><subject>Sensory stimulation</subject><subject>Signal processing</subject><subject>Ultrasonic imaging</subject><subject>Ultrasound</subject><subject>Vibration measurement</subject><subject>Vibration perception</subject><issn>0021-4922</issn><issn>1347-4065</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLxDAUhYMoOI7uXQZcCdZJ0qSPpQzjKAwoOPuQpInTTtvUPBb-e1squhHhwuUevnMuHACuMbrPWZavcErzhKKMrYTEppInYPEjnYIFQgQntCTkHFx434xnxiheAPfq7CDeRahtD9VBOKGCdrUPtfLQGii6oa1DrHTS2Sq2IugKStvrRNm-imo6Yxuc8Db2FRyc9rqfxGBhOGjYa3W8g8HF_gjFCAjX-UtwZkTr9dX3XoL942a_fkp2L9vn9cMuURQVIWEKU1IwVOIcC2KMoSnBGWKqyEqt8qzCFBslkSpSJClFUhLJEEoZNqVMWboEN3Ps4OxH1D7wxkbXjx85IRnCRUrRRKGZUs5677Thg6s74T45Rnwqlk8t8qlFPhc7Wu5mS22H38x_8Ns_8KYRA2cFf9uOs93ggg-VSb8AnK6KJA</recordid><startdate>20190701</startdate><enddate>20190701</enddate><creator>Nakagawa, Seiji</creator><creator>Doi, Koichiro</creator><creator>Ogino, Riki</creator><creator>Otsuka, Sho</creator><general>IOP Publishing</general><general>Japanese Journal of Applied Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-9957-325X</orcidid></search><sort><creationdate>20190701</creationdate><title>Propagation characteristics of amplitude-modulated bone-conducted ultrasound presented to the neck, trunk and arms</title><author>Nakagawa, Seiji ; Doi, Koichiro ; Ogino, Riki ; Otsuka, Sho</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c408t-5c1428509171a2fff4321605c869ec76d141fcb0c830b440bb2b500351f9b353</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Amplitudes</topic><topic>Carrier frequencies</topic><topic>Hearing aids</topic><topic>Modulation</topic><topic>Sensory stimulation</topic><topic>Signal processing</topic><topic>Ultrasonic imaging</topic><topic>Ultrasound</topic><topic>Vibration measurement</topic><topic>Vibration perception</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nakagawa, Seiji</creatorcontrib><creatorcontrib>Doi, Koichiro</creatorcontrib><creatorcontrib>Ogino, Riki</creatorcontrib><creatorcontrib>Otsuka, Sho</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Japanese Journal of Applied Physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nakagawa, Seiji</au><au>Doi, Koichiro</au><au>Ogino, Riki</au><au>Otsuka, Sho</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Propagation characteristics of amplitude-modulated bone-conducted ultrasound presented to the neck, trunk and arms</atitle><jtitle>Japanese Journal of Applied Physics</jtitle><addtitle>Jpn. J. Appl. Phys</addtitle><date>2019-07-01</date><risdate>2019</risdate><volume>58</volume><issue>SG</issue><spage>SGGE18</spage><pages>SGGE18-</pages><issn>0021-4922</issn><eissn>1347-4065</eissn><coden>JJAPB6</coden><abstract>Bone-conducted ultrasound (BCU) is perceived even by the profoundly hearing impaired and a novel hearing aid has been developed. In the BCU hearing aid, the ultrasonic carrier is amplitude-modulated by speech signals and presented to the mastoid process of the temporal bone by a vibrator. However, BCU presented to parts of the body distant from the head can be perceived. In this study, vibration at the external auditory meatus was measured when amplitude-modulated BCU was presented to distal parts of the body. The results showed spectrum peaks corresponding to the carrier frequency (30 kHz) and the modulation frequency. The peak level of the carrier frequency tended to decrease depending on the distance between the external auditory meatus and the stimulation part basically. On the other hand, the peak level of the modulation frequency did not change with the distance between the external auditory meatus and the stimulation part, whereas the effect of modulation frequency was significant.</abstract><cop>Tokyo</cop><pub>IOP Publishing</pub><doi>10.7567/1347-4065/ab1fdb</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-9957-325X</orcidid></addata></record> |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Amplitudes Carrier frequencies Hearing aids Modulation Sensory stimulation Signal processing Ultrasonic imaging Ultrasound Vibration measurement Vibration perception |
| title | Propagation characteristics of amplitude-modulated bone-conducted ultrasound presented to the neck, trunk and arms |
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