MEMS DIGITAL-TO-ACOUSTIC TRANSDUCER WITH ERROR CANCELLATION
An acoustic transducer comprising a substrate; and a diaphragm formed by depositing a micromachined membrane onto the substrate. The diaphragm is formed as a single silicon chip using a CMOS MEMS (microelectromechanical systems) semiconductor fabrication process. The curling of the diaphragm during...
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creator | LOEB, WAYNE, A GABRIEL, KAIGHAM, J NEUMANN, JOHN J. JR |
description | An acoustic transducer comprising a substrate; and a diaphragm formed by depositing a micromachined membrane onto the substrate. The diaphragm is formed as a single silicon chip using a CMOS MEMS (microelectromechanical systems) semiconductor fabrication process. The curling of the diaphragm during fabrication is reduced by depositing the micromachined membrane for the diaphragm in a serpentine-spring configuration with alternating longer and shorter arms. As a microspeaker, the acoustic transducer of the present invention converts a digital audio input signal directly into a sound wave, resulting in a very high quality sound reproduction at a lower cost of production in comparison to conventional acoustic transducers. The micromachined diaphragm may also be used in microphone applications. |
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JR</creatorcontrib><description>An acoustic transducer comprising a substrate; and a diaphragm formed by depositing a micromachined membrane onto the substrate. The diaphragm is formed as a single silicon chip using a CMOS MEMS (microelectromechanical systems) semiconductor fabrication process. The curling of the diaphragm during fabrication is reduced by depositing the micromachined membrane for the diaphragm in a serpentine-spring configuration with alternating longer and shorter arms. As a microspeaker, the acoustic transducer of the present invention converts a digital audio input signal directly into a sound wave, resulting in a very high quality sound reproduction at a lower cost of production in comparison to conventional acoustic transducers. The micromachined diaphragm may also be used in microphone applications.</description><language>eng ; fre ; ger</language><subject>DEAF-AID SETS ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS ; MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICALDEVICES ; MICROSTRUCTURAL TECHNOLOGY ; PERFORMING OPERATIONS ; PUBLIC ADDRESS SYSTEMS ; TRANSPORTING</subject><creationdate>2008</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080813&DB=EPODOC&CC=EP&NR=1216602B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20080813&DB=EPODOC&CC=EP&NR=1216602B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LOEB, WAYNE, A</creatorcontrib><creatorcontrib>GABRIEL, KAIGHAM, J</creatorcontrib><creatorcontrib>NEUMANN, JOHN J. 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The micromachined diaphragm may also be used in microphone applications.</description><subject>DEAF-AID SETS</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS</subject><subject>MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICALDEVICES</subject><subject>MICROSTRUCTURAL TECHNOLOGY</subject><subject>PERFORMING OPERATIONS</subject><subject>PUBLIC ADDRESS SYSTEMS</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2008</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLD2dfUNVnDxdPcMcfTRDfHXdXT2Dw0O8XRWCAly9At2CXV2DVII9wzxUHANCvIPUnB29HN29fFxDPH09-NhYE1LzClO5YXS3AwKbq4hzh66qQX58anFBYnJqXmpJfGuAYZGhmZmBkZOhsZEKAEAn-wpBg</recordid><startdate>20080813</startdate><enddate>20080813</enddate><creator>LOEB, WAYNE, A</creator><creator>GABRIEL, KAIGHAM, J</creator><creator>NEUMANN, JOHN J. 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JR</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>LOEB, WAYNE, A</au><au>GABRIEL, KAIGHAM, J</au><au>NEUMANN, JOHN J. JR</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>MEMS DIGITAL-TO-ACOUSTIC TRANSDUCER WITH ERROR CANCELLATION</title><date>2008-08-13</date><risdate>2008</risdate><abstract>An acoustic transducer comprising a substrate; and a diaphragm formed by depositing a micromachined membrane onto the substrate. The diaphragm is formed as a single silicon chip using a CMOS MEMS (microelectromechanical systems) semiconductor fabrication process. The curling of the diaphragm during fabrication is reduced by depositing the micromachined membrane for the diaphragm in a serpentine-spring configuration with alternating longer and shorter arms. As a microspeaker, the acoustic transducer of the present invention converts a digital audio input signal directly into a sound wave, resulting in a very high quality sound reproduction at a lower cost of production in comparison to conventional acoustic transducers. The micromachined diaphragm may also be used in microphone applications.</abstract><oa>free_for_read</oa></addata></record> |
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subjects | DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICALDEVICES MICROSTRUCTURAL TECHNOLOGY PERFORMING OPERATIONS PUBLIC ADDRESS SYSTEMS TRANSPORTING |
title | MEMS DIGITAL-TO-ACOUSTIC TRANSDUCER WITH ERROR CANCELLATION |
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