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1. WO2011010426 - SOUND PICK-UP DEVICE AND METHOD

Publication Number WO/2011/010426
Publication Date 27.01.2011
International Application No. PCT/JP2010/004170
International Filing Date 23.06.2010
IPC
H04R 5/027 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
5Stereophonic arrangements
027Spatial or constructional arrangements of microphones, e.g. in dummy heads
H04M 3/56 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
MTELEPHONIC COMMUNICATION
3Automatic or semi-automatic exchanges
42Systems providing special services or facilities to subscribers
56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
H04R 1/40 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
32for obtaining desired directional characteristic only
40by combining a number of identical transducers
H04R 3/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers
CPC
H04M 3/568
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
MTELEPHONIC COMMUNICATION
3Automatic or semi-automatic exchanges
42Systems providing special services or facilities to subscribers
56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
568audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
H04N 21/42203
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
41Structure of client; Structure of client peripherals
422Input-only peripherals ; , i.e. input devices connected to specially adapted client devices; , e.g. global positioning system [GPS]
42203sound input device, e.g. microphone
H04N 21/4788
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
47End-user applications
478Supplemental services, e.g. displaying phone caller identification, shopping application
4788communicating with other users, e.g. chatting
H04N 7/142
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
14Systems for two-way working
141between two video terminals, e.g. videophone
142Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
H04N 7/15
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
14Systems for two-way working
15Conference systems
H04R 3/005
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers ; , loudspeakers or microphones
005for combining the signals of two or more microphones
Applicants
  • パナソニック株式会社 PANASONIC CORPORATION [JP]/[JP] (AllExceptUS)
  • 杠慎一 YUZURIHA, Shinichi (UsOnly)
Inventors
  • 杠慎一 YUZURIHA, Shinichi
Agents
  • 新居広守 NII, Hiromori
Priority Data
2009-17373424.07.2009JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SOUND PICK-UP DEVICE AND METHOD
(FR) DISPOSITIF ET PROCÉDÉ DE PRISE DE SON
(JA) 収音装置及び収音方法
Abstract
(EN)
Provided is a sound pick-up device whereby the degree of freedom in positioning a microphone is improved and clear stereo pick-up of sound from a sound source is enabled without using information relating to the microphone's current location. The sound pick-up device is provided with: a microphone (110) which is provided with at least four sound pick-up units (110a-110d) positioned so that the directions of the main axes of directivity thereof are different from each other, and which is provided at a position where sound output from a speaker can be picked up; a level calculation unit (112) which calculates the signal level of the sound output by the speaker for each output signal of the at least four sound pick-up units (110a-110d); a mixing ratio calculation unit (113) which, using the calculated signal levels, calculates the mixing coefficients suited for the directions of the main axes of directivity of the at least four sound pick-up units; and a signal synthesis unit (115) which, using the calculated mixing coefficients, generate a stereo signal by synthesizing the output signals of the at least four sound pick-up units.
(FR)
L'invention porte sur un dispositif de prise de son par lequel le degré de liberté dans le positionnement d'un microphone est amélioré et une prise stéréophonique claire du son provenant d'une source sonore est rendue possible sans utilisation d'informations relatives à l'emplacement courant du microphone. Le dispositif de prise de son comprend : un microphone (110) qui comprend au moins quatre unités de prise de son (110a-110d) positionnées de telle façon que les directions de leurs axes principaux de directivité sont différentes l'une de l'autre, et qui est placé en une position où une sortie sonore d'un haut-parleur peut être captée ; une unité de calcul de niveau (112) qui calcule le niveau de signal du son émis par le haut-parleur pour chaque signal de sortie des au moins quatre unités de prise de son (110a-110d) ; une unité de calcul de proportions de mélange (113) qui, à l'aide des niveaux de signal calculés, calcule les coefficients de mélange appropriés pour les directions des axes principaux de directivité des au moins quatre unités de prise de son ; et une unité de combinaison de signaux (115) qui, à l'aide des coefficients de mélange calculés, combine les signaux de sortie des au moins quatre unités de prise de son pour générer ainsi un signal stéréophonique.
(JA)
 マイクロホンの設置の自由度を高めるとともに、マイクロホンの現在位置の情報を用いずに、音源からの音を明瞭にステレオ収音することができる収音装置を提供する。 指向性の主軸方向が互いに異なるように配置された4以上の収音ユニット(110a~110d)を備え、スピーカから出力された音を収音可能な位置に設置されるマイクロホン(110)と、4以上の収音ユニット(110a~110d)の出力信号ごとに、スピーカから出力された音の信号レベルを算出するレベル算出部(112)と、算出された信号レベルを用いて、4以上の収音ユニットの指向性の主軸方向に適応するミキシング係数を算出するミキシング比算出部(113)と、算出されたミキシング係数を用いて、4以上の収音ユニットの出力信号を合成することにより、ステレオ信号を生成する信号合成部(115)とを備える。
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