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1. WO2006132136 - AUDIO DEVICE AND AUDIO BEAM CONTROL METHOD

Publication Number WO/2006/132136
Publication Date 14.12.2006
International Application No. PCT/JP2006/311059
International Filing Date 02.06.2006
IPC
H04S 5/02 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS
5Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
02of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals
H04B 1/16 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
06Receivers
16Circuits
H04R 1/28 2006.1
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
22for obtaining desired frequency characteristic only
28Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 1/40 2006.1
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
H04S 7/00 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS
7Indicating arrangements; Control arrangements, e.g. balance control
CPC
H04R 1/403
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
32for obtaining desired directional characteristic only
40by combining a number of identical transducers
403loud-speakers
H04R 27/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
27Public address systems
H04R 29/002
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
29Monitoring arrangements; Testing arrangements
001for loudspeakers
002Loudspeaker arrays
H04R 5/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
5Stereophonic arrangements
02Spatial or constructional arrangements of loudspeakers
Applicants
  • ヤマハ株式会社 YAMAHA CORPORATION [JP]/[JP] (AllExceptUS)
  • 澤米 進 TAKUMAI, Susumu [JP]/[JP] (UsOnly)
Inventors
  • 澤米 進 TAKUMAI, Susumu
Agents
  • 志賀 正武 SHIGA, Masatake
Priority Data
2005-16623006.06.2005JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) AUDIO DEVICE AND AUDIO BEAM CONTROL METHOD
(FR) DISPOSITIF AUDIO ET MÉTHODE DE CONTRÔLE DE FAISCEAU AUDIO
(JA) オーディオ装置及び音声ビーム制御方法
Abstract
(EN)
An audio device includes a speaker array device having a plurality of speaker units arranged. By emitting an audio beam in a main beam direction toward a particular person, it is possible to listen to an audio content with a constant sound quality. Moreover, since the other persons listen to the audio content at an off beam position, a leak audio by the side lobe of the audio beam is transmitted for the intermediate and the low sound range and it is possible to listen to the audio with an appropriate audio volume. On the other hand, sharp beam control is performed for the high sound range. Accordingly, the sound volume of the intermediate volume or above is superposed on the audio beam and the high sound range component is emitted without directivity.
(FR)
Le dispositif audio selon l'invention comprend un dispositif de matrice de haut-parleurs comportant une pluralité d’unités de haut-parleur. En émettant un faisceau audio dans une direction principale de faisceau vers une personne en particulier, il devient possible d’écouter un contenu audio avec une qualité sonore constante. En outre, étant donné que d’autres personnes écoutent le contenu audio en position hors faisceau, de l’audio de fuite par le lobe latéral du faisceau audio est transmis pour la plage des sons médiums et graves et il est possible d’écouter le son avec un volume audio approprié. D’autre part un contrôle serré du faisceau est exercé sur la plage des sons aigus. Ainsi, le volume sonore des médiums et supérieurs est superposé au faisceau audio et la composante aiguë est émise de façon non directionnelle.
(JA)
 複数のスピーカユニットを配列したスピーカアレイ装置を具備するオーディオ装置において、特定者に対してメインビーム方向で音声ビームを放射することにより、一定の音質でオーディオコンテンツを聴取できるようにする。また、他の人はオフビーム位置でオーディオコンテンツを聴取するため、中音域及び低音域については音声ビームのサイドローブによる漏れ音声が伝達されることとなり、適度な音量にて音声を聴取することができる。一方、高音域は鋭くビーム制御されるため、中音量以上の音量については、上記音声ビームに重畳して高音域成分を無指向性で放射する。
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