[특허]Microphone system for teleconferencing system

Microphone system for teleconferencing system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04R-003/00
출원번호	US-0761349 (1996-12-06)
발명자 / 주소	Chu Peter Lee Barton William F.
출원인 / 주소	PictureTel Corporation
대리인 / 주소	Fish & Richardson P.C.
인용정보	피인용 횟수 : 39 인용 특허 : 0

초록 ▼

A microphone system for use in an environment where an acoustic source emits energy from diverse and varying locations within the environment. The microphone system has at least two directional microphones, mixing circuitry, and control circuitry. The microphones are held each directed out from a center point. The mixing circuitry combines the electrical signals from the microphones in varying proportions to form a composite signal, the composite signal including contributions from at least two of the microphones. The control circuitry analyzes the electrical signals to determine an angular orientation of the acoustic signal relative to the central point, and substantially continuously adjusts the proportions in response to the determined orientation and provides the adjusted proportions to the mixing circuitry. The values of the proportions are selected so that the composite signal simulates a signal that would be generated by a single directional microphone pivoted about the central point to direct its maximum response at the acoustic signal as the acoustic signal moves about the environment.

대표청구항 ▼

[ What is claimed is:] [1.] A microphone system for use in a conference environment varying locations within the environment, comprising:at least two directional microphones held in a fixed arrangement about a center point, the respective response of each said microphone being directed radially away from said center point in a different direction, each said microphone able to receive an acoustic signal and produce an electrical signal in response;mixing circuitry to combine said electrical signals in varying proportions to form a composite signal, said composite signal including contributions from at least two of said microphones; and control circuitry configured to analyze said electrical signals to determine an angular orientation of the acoustic signal relative to said central point, and to substantially continuously adjust said proportions in response to said determined orientation and provide said adjusted proportions to said mixing circuitry,the values of said proportions selected so that said composite signal simulates a signal that would be generated by a virtual directional microphone pivoted about said central point to direct its maximum response at the acoustic signal as the acoustic signal moves about the environment.

이 특허를 인용한 특허 (39)

Malone, Michael F., Apparatus for voice assistant, location tagging, multi-media capture, transmission, speech to text conversion, photo/video image/object recognition, creation of searchable metatags/contextual tags, storage and search retrieval.
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Kirsch, James M.; Thomsen, Brant D., Audio enhancement via opportunistic use of microphones.
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Cutler, Ross G., Automatic gain and exposure control using region of interest detection.
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Cutler, Ross G., Capture device movement compensation for speaker indexing.
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Cutler, Ross G., Capture device movement compensation for speaker indexing.
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Pandey, Ashutosh; Thurston, Darrin T.; Lambert, David K.; Bathurst, Tracy A., Conferencing apparatus that combines a beamforming microphone array with an acoustic echo canceller.
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Morrill, Daniel Lawrence, Controlling microphones and speakers of a computing device.
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Morrill, Daniel Lawrence, Controlling microphones and speakers of a computing device.
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Hodges,Richard, Echo suppression and speech detection techniques for telephony applications.
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Jones, David K.; Payne, Jamie; Holstege, Cody Jay; Schneider, Mark Andrew, Floor power distribution system.
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Jones, David K.; Payne, Jamie; Holstege, Cody Jay; Schneider, Mark Andrew, Floor power distribution system.
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Oxford, William V., Forming beams with nulls directed at noise sources.
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Oxford, William V.; Varadarajan, Vijay, Hybrid beamforming.
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Hannah,Eric C., MEMS directional sensor system.
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Schüldt, Christian; Lindström, Fredric, Method and device for microphone selection.
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Schaaf, Klaus, Method and device for operating a microphone system, especially in a motor vehicle.
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Pandey, Ashutosh; Thurston, Darrin T.; Lambert, David K.; Bathurst, Tracy A., Methods and apparatuses for echo cancellation with beamforming microphone arrays.
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Oxford, William V., Microphone and speaker arrangement in speakerphone.
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Matsuo, Naoshi, Microphone array.
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Matsuo, Naoshi, Microphone array.
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Cutler, Ross G., Microphone array for a camera speakerphone.
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Matsuo,Naoshi, Microphone array system.
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Oxford, William V.; Kellar, Kevin Patrick, Microphone orientation and size in a speakerphone.
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Bathurst, Tracy A.; Lambert, David; Whiteley, Wayne; Owen, Carrie L., Multi-pod conference systems.
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Wilson, Scott Edward, Sound gathering system.
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Yuzuriha, Shinichi, Sound pickup apparatus and sound pickup method.
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Shen Albert, Spatial sound steering system.
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Oxford, William V., Speakerphone.
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Oxford, William V., Speakerphone self calibration and beam forming.
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Malone, Michael F.; Murphy, Frederick J., System for embedding searchable information, encryption, signing operation, transmission, storage and retrieval.
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Feng, Albert S.; Lockwood, Michael E.; Jones, Douglas L.; Bilger, legal representative, Carolyn J.; Lansing, Charissa R.; O'Brien, William D.; Wheeler, Bruce C.; Bilger, Robert C., Systems and methods for interference suppression with directional sensing patterns.
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Claesson, Leif Hakan, Techniques for improving audio clarity and intelligibility at reduced bit rates over a digital network.
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Hodges,Richard; Roberts,David; McMillen,Keith; Claesson,Leif; Reddy,Sreevathsa G. Sreenivasa; Edwards,Keith, Techniques for improving telephone audio quality.
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Faraci Philip ; Lang Philip, Teleconferencing device having acoustic transducers positioned to improve acoustic echo return loss.
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Oxford, William V., Tracking talkers using virtual broadside scan and directed beams.
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Oxford, William V., Updating modeling information based on offline calibration experiments.
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Oxford, William V., Updating modeling information based on online data gathering.
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Bathurst, Tracy A.; Lambert, David; Whiteley, Wayne; Owen, Carrie L., Virtual microphones in electronic conferencing systems.
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Bernard, Bruce V.; Kwok, Li Hing; Ren, Oliver; Ong, Pichet Thomas, Wireless multi-unit conference phone.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Microphone system for teleconferencing system 원문보기

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Microphone system for teleconferencing system 원문보기

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이 특허를 인용한 특허 (39)

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