JP5531669B2 - Communication device - Google Patents

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JP5531669B2
JP5531669B2 JP2010038296A JP2010038296A JP5531669B2 JP 5531669 B2 JP5531669 B2 JP 5531669B2 JP 2010038296 A JP2010038296 A JP 2010038296A JP 2010038296 A JP2010038296 A JP 2010038296A JP 5531669 B2 JP5531669 B2 JP 5531669B2
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communication device
instruction information
sound collection
sound
directivity
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誠 山田
英治 赤澤
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Yamaha Corp
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Description

本発明は、音響信号を授受する通信装置に関する。   The present invention relates to a communication device that transmits and receives an acoustic signal.

通信装置を利用した音声通話時の収音特性を可変に制御する技術が従来から提案されている。例えば特許文献１には、通信装置（携帯電話機）に設置された収音機器の指向方向と収音感度とを通話相手毎に設定する技術が開示されている。   Techniques for variably controlling sound collection characteristics during a voice call using a communication device have been proposed. For example, Patent Document 1 discloses a technique for setting the directivity direction and sound collection sensitivity of a sound collection device installed in a communication device (cellular phone) for each call partner.

特開２００８−１６７３２３号公報JP 2008-167323 A

しかし、特許文献１の技術では、通信装置に対する利用者からの操作に応じて通話相手毎の収音特性が設定されるから、通話相手が聴取し易い収音特性に調整されるとは限らず、例えば通信装置での収音の状態（例えば発声音の到来方向や到来距離）によっては、通話相手が却って聴取し難い収音特性となる可能性もある。自身が聴取し易い収音特性となるように相手に口頭で要求することも可能であるが、現実的には自身の要望を相手に要求し難い場合（例えば通話相手が目上の立場にある場合）もある。以上の事情を考慮して、本発明は、自身が聴取し易いように相手側の収音特性を制御することを目的とする。   However, in the technique of Patent Document 1, since the sound collection characteristic for each call partner is set according to the operation from the user to the communication device, the sound collection characteristic is not necessarily adjusted to be easily heard by the call partner. For example, depending on the state of sound collection in the communication device (for example, the direction and distance of arrival of the uttered sound), there is a possibility that the sound of the other party may be difficult to hear. Although it is possible to verbally request the other party so that the sound collection characteristic is easy to hear, it is practically difficult to request the other party's request (for example, the other party is in a superior position) In some cases. In view of the above circumstances, an object of the present invention is to control the sound collection characteristic of the other party so that the user can easily listen.

以上の課題を解決するために、本発明の通信装置は、利用者の操作に応じた指示情報を送信する相手側通信装置と通信する通信装置であって、可変の指向特性で収音された音響信号を生成する収音手段と、相手側通信装置から指示情報を受信する受信手段と、利用者が指示を入力する入力機器と、入力機器に対する利用者からの指示に応じて収音特性の調整の可否を設定し、調整を許可する場合には、受信手段が受信した指示情報に応じて収音手段の指向特性を制御する一方、調整を禁止する場合には指示情報を無視する制御手段と、収音手段が生成した音響信号を相手側通信装置に送信する送信手段とを具備する。以上の構成においては、相手側通信装置から送信された指示情報に応じて収音手段の指向特性が制御されるから、相手側通信装置の利用者は、自身が聴取し易いように通信装置の収音特性を調整できるという利点がある。
In order to solve the above problems, a communication device of the present invention is a communication device that communicates with a counterpart communication device that transmits instruction information according to a user's operation, and is picked up with variable directivity characteristics. Sound collecting means for generating an acoustic signal, receiving means for receiving instruction information from the counterpart communication device , an input device for a user to input an instruction, and a sound collection characteristic according to an instruction from the user to the input device Control means for setting whether or not adjustment is allowed and controlling the directivity characteristics of the sound collecting means according to the instruction information received by the receiving means , while ignoring the instruction information when adjustment is prohibited And a transmission means for transmitting the acoustic signal generated by the sound collection means to the counterpart communication device. In the above configuration, the directivity characteristics of the sound collecting means are controlled according to the instruction information transmitted from the counterpart communication device, so that the user of the counterpart communication device can easily listen to the communication device. There is an advantage that the sound collection characteristic can be adjusted.

本発明の好適な態様において、制御手段は、受信手段が受信した複数の指示情報を平均し、平均後の指示情報に応じて収音手段の指向特性を制御する。以上の態様においては、複数の指示情報を平均した指示情報が収音特性の制御に適用されるから、相手側通信装置の利用者が聴取し易い収音特性に調整される可能性が高い。したがって、相手側通信装置の利用者が通信装置の収音特性を調整する負担を軽減することが可能である。なお、以上の態様の具体例は例えば第２実施形態として後述される。   In a preferred aspect of the present invention, the control means averages the plurality of instruction information received by the receiving means, and controls the directivity characteristics of the sound collecting means according to the averaged instruction information. In the above aspect, since the instruction information obtained by averaging a plurality of instruction information is applied to the control of the sound collection characteristic, there is a high possibility that the sound collection characteristic can be easily adjusted by the user of the counterpart communication device. Therefore, it is possible to reduce the burden of the user of the counterpart communication device adjusting the sound collection characteristics of the communication device. In addition, the specific example of the above aspect is later mentioned as 2nd Embodiment, for example.

本発明の好適な態様に係る通信装置は、受信手段が受信した指示情報を相手側通信装置毎に記憶する記憶手段を具備し、制御手段は、相手側通信装置との通信時に、記憶手段が記憶する複数の指向特性のうち当該相手側通信装置に対応する指示情報に応じて収音手段の指向特性を制御する。以上の態様においては、相手側通信装置との通信時に、その相手側通信装置から過去に受信した指示情報に応じて収音手段の指向特性が制御されるから、各相手側通信装置の利用者にとって聴取し易い収音特性に調整される可能性が高い。したがって、各相手側通信装置の利用者が通信装置の収音特性を調整する負担を軽減することが可能である。なお、以上の態様の具体例は例えば第３実施形態として後述される。   The communication device according to a preferred aspect of the present invention comprises storage means for storing the instruction information received by the receiving means for each counterpart communication device, and the control means is configured such that the storage means is in communication with the counterpart communication device. The directivity characteristic of the sound collecting means is controlled in accordance with the instruction information corresponding to the counterpart communication device among the plurality of directivity characteristics to be stored. In the above aspect, during communication with the counterpart communication device, the directivity characteristics of the sound collection means are controlled according to the instruction information received from the counterpart communication device in the past. Therefore, there is a high possibility that the sound collection characteristic is easily adjusted for the listener. Therefore, it is possible to reduce the burden of the user of each counterpart communication device adjusting the sound collection characteristics of the communication device. In addition, the specific example of the above aspect is later mentioned as 3rd Embodiment, for example.

本発明の好適な態様に係る通信装置は、相異なる複数の指向特性を記憶する記憶手段を具備し、制御手段は、収音手段の指向特性を、記憶手段が記憶する複数の指向特性のうち指示情報に応じて選択した指向特性に制御する。以上の態様においては、記憶装置が記憶する複数の指向特性から指示情報に応じた指向特性が選択されるから、相手側通信装置の利用者は、複数の指向特性の何れかを指示すれば足りる。したがって、相手側通信装置の利用者の負担を軽減することが可能である。なお、以上の態様の具体例は例えば第４実施形態として後述される。   The communication apparatus according to a preferred aspect of the present invention includes storage means for storing a plurality of different directivity characteristics, and the control means includes the directivity characteristics of the sound collecting means among the directivity characteristics stored in the storage means. Control to the directivity selected according to the instruction information. In the above aspect, since the directional characteristic corresponding to the instruction information is selected from the plurality of directional characteristics stored in the storage device, it is sufficient for the user of the counterpart communication device to indicate any of the directional characteristics. . Therefore, it is possible to reduce the burden on the user of the counterpart communication device. In addition, the specific example of the above aspect is later mentioned as 4th Embodiment, for example.

本発明の好適な態様に係る通信装置は、受信手段が受信した指示情報に応じた指向特性の制御の実行を利用者に報知する報知手段を具備する。以上の態様においては、相手側通信装置から受信した指示情報に応じた指向特性の制御の実行が通信装置の利用者に報知されるから、例えば利用者が認識しない状況で自身の通信装置の指向特性が相手側通信装置の利用者によって調整される可能性を低減することが可能である。なお、以上の態様の具体例は例えば第５実施形態として後述される。   The communication apparatus according to a preferred aspect of the present invention includes notification means for notifying the user of execution of directivity control according to the instruction information received by the reception means. In the above aspect, since execution of directivity control according to the instruction information received from the counterpart communication device is notified to the user of the communication device, for example, the orientation of the own communication device in a situation that the user does not recognize. It is possible to reduce the possibility that the characteristics are adjusted by the user of the counterpart communication device. In addition, the specific example of the above aspect is later mentioned as 5th Embodiment, for example.

第１実施形態に係る通信システムのブロック図である。1 is a block diagram of a communication system according to a first embodiment. 通信装置のブロック図である。It is a block diagram of a communication apparatus. 信号処理部のブロック図である。It is a block diagram of a signal processing part. 第２実施形態における記憶装置の模式図である。It is a schematic diagram of the memory | storage device in 2nd Embodiment. 第３実施形態における記憶装置の模式図である。It is a schematic diagram of the memory | storage device in 3rd Embodiment. 第４実施形態における記憶装置の模式図である。It is a schematic diagram of the memory | storage device in 4th Embodiment. 第５実施形態における通信装置のブロック図である。It is a block diagram of the communication apparatus in 5th Embodiment.

＜Ａ：第１実施形態＞
図１は、本発明の第１実施形態に係る通信装置を利用した通信システムのブロック図である。図１に示すように、通信システム１００は、通信網２００と複数の通信装置Ｄ（Ｄ1，Ｄ2）とを含んで構成される。複数の通信装置Ｄの各々は、他の通信装置Ｄとの間で通信網２００を介した音声通話を実行する携帯電話機である。通信網（移動通信網）２００は、基地局や交換局を含む多数の中継装置で構成される。なお、相互に通信する２個の通信装置Ｄ（Ｄ1，Ｄ2）のみが図１では便宜的に図示されている。複数の通信装置Ｄのうち説明のうえで着目する１個の通信装置Ｄを以下では便宜的に「自装置」と表記し、自装置にとって通信の相手方となる他の通信装置Ｄを「相手側通信装置」と表記する場合がある。 <A: First Embodiment>
FIG. 1 is a block diagram of a communication system using a communication apparatus according to the first embodiment of the present invention. As shown in FIG. 1, the communication system 100 includes a communication network 200 and a plurality of communication devices D (D1, D2). Each of the plurality of communication devices D is a mobile phone that performs a voice call with another communication device D via the communication network 200. The communication network (mobile communication network) 200 includes a large number of relay devices including a base station and a switching station. Only two communication devices D (D1, D2) communicating with each other are shown in FIG. 1 for convenience. In the following description, one communication device D to be noted in the description among the plurality of communication devices D will be referred to as “own device” for the sake of convenience, and another communication device D that is the other party of communication for the own device will be referred to as “the other party” Sometimes referred to as “communication device”.

図２は、通信装置Ｄのブロック図である。図２では１個の通信装置Ｄのみを代表的に図示したが、通信システム１００内の各通信装置Ｄの構成は同様である。図２に示すように、通信装置Ｄは、演算処理装置１２と記憶装置１４と通信機器２０と入力機器３２と放音機器３４と収音機器４０とを具備する。演算処理装置１２は、記憶装置１４に記憶されたプログラムを実行することで、通信装置Ｄの各要素を制御するための複数の機能（信号処理部５２，指示生成部５４，制御部５６）を実現する。なお、演算処理装置１２の各機能を複数の集積回路に分散した構成や、専用の電子回路（ＤＳＰ）が各機能を実現する構成も採用され得る。記憶装置１４は、演算処理装置１２が実行するプログラムや演算処理装置１２が使用する各種のデータを記憶する。半導体記録媒体等の公知の記録媒体が記憶装置１４として任意に採用される。   FIG. 2 is a block diagram of the communication device D. In FIG. 2, only one communication device D is representatively illustrated, but the configuration of each communication device D in the communication system 100 is the same. As illustrated in FIG. 2, the communication device D includes an arithmetic processing device 12, a storage device 14, a communication device 20, an input device 32, a sound emission device 34, and a sound collection device 40. The arithmetic processing device 12 executes a program stored in the storage device 14 and thereby has a plurality of functions (signal processing unit 52, instruction generation unit 54, control unit 56) for controlling each element of the communication device D. Realize. A configuration in which each function of the arithmetic processing unit 12 is distributed over a plurality of integrated circuits, or a configuration in which a dedicated electronic circuit (DSP) realizes each function may be employed. The storage device 14 stores a program executed by the arithmetic processing device 12 and various data used by the arithmetic processing device 12. A known recording medium such as a semiconductor recording medium is arbitrarily employed as the storage device 14.

通信機器２０は、通信網２００を利用して相手側通信装置Ｄと通信する。例えば通信網２００との間で無線信号を授受する公知の無線通信器（アンテナおよび変復調回路）が通信機器２０として利用され得る。図２に示すように、通信機器２０は、受信部２２と送信部２４とを含んで構成される。受信部２２は、相手側通信装置Ｄが送信した信号を通信網２００から受信する。送信部２４は、相手側通信装置Ｄを送信先とする信号を通信網２００に送信する。例えば、受信部２２は、相手側通信装置Ｄの利用者（通話相手）の発声音を示す音響信号Ｖを受信および復調し、送信部２４は、自装置の利用者の発声音を示す音響信号Ｖを変調および送信する。   The communication device 20 communicates with the counterpart communication device D using the communication network 200. For example, a known wireless communication device (antenna and modulation / demodulation circuit) that exchanges wireless signals with the communication network 200 can be used as the communication device 20. As illustrated in FIG. 2, the communication device 20 includes a reception unit 22 and a transmission unit 24. The receiving unit 22 receives a signal transmitted from the counterpart communication device D from the communication network 200. The transmission unit 24 transmits a signal having the counterpart communication device D as a transmission destination to the communication network 200. For example, the receiving unit 22 receives and demodulates an acoustic signal V indicating the utterance sound of the user (calling party) of the counterpart communication device D, and the transmitting unit 24 is an acoustic signal indicating the utterance sound of the user of the own device. Modulate and transmit V.

入力機器３２は、通信装置Ｄに対する指示を利用者が入力するための機器であり、例えば利用者が操作する複数の操作子（図示略）を含んで構成される。放音機器３４（例えばスピーカやヘッドホン）は、受信部２２が受信した音響信号Ｖに応じた音波（すなわち通話相手の発声音）を放射する。   The input device 32 is a device for a user to input an instruction to the communication device D, and includes, for example, a plurality of operators (not shown) operated by the user. The sound emitting device 34 (for example, a speaker or headphones) emits a sound wave (that is, a voice of the other party) according to the acoustic signal V received by the receiving unit 22.

収音機器４０は、利用者の発声音を収音する。第１実施形態の収音機器４０は、相互に離間して直線状または平面状に配置された複数の収音体４２（マイクロホンアレイ）を含んで構成される。複数の収音体４２の各々は、周囲の音響を収音して音響信号ＸAを生成する無指向性のマイクロホンである。複数の収音体４２が生成した複数の音響信号ＸAは演算処理装置１２（信号処理部５２）に供給される。なお、各音響信号ＸAをアナログからデジタルに変換するＡ/Ｄ変換器の図示は便宜的に省略されている。   The sound collection device 40 collects a user's voice. The sound collection device 40 of the first embodiment is configured to include a plurality of sound collection bodies 42 (microphone arrays) arranged linearly or planarly apart from each other. Each of the plurality of sound collecting bodies 42 is an omnidirectional microphone that picks up surrounding sounds and generates an acoustic signal XA. The plurality of acoustic signals XA generated by the plurality of sound collectors 42 are supplied to the arithmetic processing unit 12 (signal processing unit 52). An A / D converter that converts each acoustic signal XA from analog to digital is not shown for convenience.

演算処理装置１２が実現する信号処理部５２は、利用者の発声音を特定の収音特性で収音した場合の音響信号Ｖを複数の音響信号ＸAから生成する。音響信号Ｖの収音特性は可変に制御される。すなわち、収音機器４０および信号処理部５２は、可変の収音特性（特に指向特性）で収音された音響信号Ｖを生成する要素（収音手段）として機能する。図３に示すように、第１実施形態の信号処理部５２は、指向処理部６２と感度調整部６４とを含んで構成される。なお、指向処理部６２と感度調整部６４との前後を逆転させた構成も採用され得る。   The signal processing unit 52 realized by the arithmetic processing device 12 generates an acoustic signal V from a plurality of acoustic signals XA when a user's uttered sound is collected with specific sound collection characteristics. The sound collection characteristic of the acoustic signal V is variably controlled. That is, the sound collection device 40 and the signal processing unit 52 function as elements (sound collection means) that generate the acoustic signal V collected with variable sound collection characteristics (particularly directivity characteristics). As shown in FIG. 3, the signal processing unit 52 of the first embodiment includes a directivity processing unit 62 and a sensitivity adjustment unit 64. A configuration in which the front and back of the directivity processing unit 62 and the sensitivity adjustment unit 64 are reversed can also be employed.

指向処理部６２は、音響信号Ｖの収音の指向方向を可変に制御する。具体的には、指向処理部６２は、収音機器４０に対して特定の指向方向から到来した成分を他方向の成分に対して強調（分離）した音響信号ＶXを複数の音響信号ＸAから生成する。具体的には、指向処理部６２は、指向方向に応じた方向ベクトル（ステアリングベクトル）を利用して収音のビーム（収音の感度が高い領域）を形成することで音響信号ＶXを生成する。例えば、指向方向に応じた遅延の付加後に各音響信号ＸAを加算することで指向方向のビームを形成する遅延加算型のビーム形成処理が、音響信号ＶXの生成に好適に採用され得る。他方、感度調整部６４は、音響信号Ｖの収音感度を可変に制御する。具体的には、感度調整部６４は、指向処理部６２が生成した音響信号ＶXを収音感度（後述の指示感度σz）に応じた可変の利得で増幅して音響信号Ｖを生成する。   The directivity processing unit 62 variably controls the directivity direction of sound collection of the acoustic signal V. Specifically, the directional processing unit 62 generates an acoustic signal VX in which a component arriving from a specific directional direction with respect to the sound collection device 40 is emphasized (separated) from a component in the other direction from the plurality of acoustic signals XA. To do. Specifically, the directivity processing unit 62 generates an acoustic signal VX by forming a sound collecting beam (an area where the sound collecting sensitivity is high) using a direction vector (steering vector) corresponding to the directing direction. . For example, a delay-and-add type beam forming process that forms a beam in the directional direction by adding each acoustic signal XA after adding a delay according to the directional direction can be suitably employed for generating the acoustic signal VX. On the other hand, the sensitivity adjustment unit 64 variably controls the sound collection sensitivity of the acoustic signal V. Specifically, the sensitivity adjustment unit 64 generates the acoustic signal V by amplifying the acoustic signal VX generated by the directivity processing unit 62 with a variable gain corresponding to the sound collection sensitivity (instruction sensitivity σz described later).

図２の指示生成部５４は、相手側通信装置Ｄでの収音特性（指向方向，収音感度）を指示する指示情報Ｚを、入力機器３２に対する利用者からの操作に応じて可変に生成する。具体的には、指示情報Ｚは、指向方向の指示値（以下「指示方向」という）θzと収音感度の指示値（以下「指示感度」という）σzとを含んで構成される。指示生成部５４が生成した指示情報Ｚは、通信機器２０の送信部２４から相手側通信装置Ｄに送信される。他方、受信部２２は、相手側通信装置Ｄの送信部２４が送信した指示情報Ｚ（すなわち通話相手が指示した収音方向および収音感度）を通信網２００から受信する。指示情報Ｚの伝送には、音響信号Ｖの伝送用の通話チャネルに多重化された制御チャネルが利用される。指示情報Ｚの送信は、通話チャネルの確立中（すなわち通話中）の任意の時点で、入力機器３２に対する操作を契機として随時に実行される。   The instruction generation unit 54 in FIG. 2 variably generates instruction information Z for instructing sound collection characteristics (directivity direction, sound collection sensitivity) in the counterpart communication device D according to an operation from the user to the input device 32. To do. Specifically, the instruction information Z includes an instruction value (hereinafter referred to as “instruction direction”) θz of a directivity direction and a sound collection sensitivity instruction value (hereinafter referred to as “instruction sensitivity”) σz. The instruction information Z generated by the instruction generation unit 54 is transmitted from the transmission unit 24 of the communication device 20 to the counterpart communication device D. On the other hand, the receiving unit 22 receives from the communication network 200 the instruction information Z (that is, the sound collection direction and sound collection sensitivity designated by the call partner) transmitted by the transmission unit 24 of the counterpart communication device D. For transmission of the instruction information Z, a control channel multiplexed with a speech channel for transmitting the acoustic signal V is used. The instruction information Z is transmitted at any time during establishment of a call channel (that is, during a call), triggered by an operation on the input device 32.

制御部５６は、信号処理部５２が生成する音響信号Ｖの収音特性（指向方向，収音感度）を、相手側通信装置Ｄから受信部２２が受信した指示情報Ｚ（指示方向θz，指示感度σz）に応じて可変に制御する。具体的には、制御部５６は、指示方向θzに応じた方向ベクトルを指向処理部６２に指示するとともに指示感度σzを感度調整部６４に指示する。したがって、信号処理部５２が生成する音響信号Ｖの指向方向は指示方向θzに更新され、音響信号Ｖの収音感度は指示感度σzに更新される。制御部５６による収音特性の制御は、受信部２２が指示情報Ｚを受信するたびに随時に実行される。なお、制御部５６による方向ベクトルの生成には、音源分離の公知の技術（例えば独立成分分析や適応型ビーム形成）が任意に採用される。   The control unit 56 indicates the sound collection characteristics (directivity direction, sound collection sensitivity) of the acoustic signal V generated by the signal processing unit 52 by using the instruction information Z (instruction direction θz, instruction) received by the receiving unit 22 from the counterpart communication device D. It is variably controlled according to the sensitivity (σz). Specifically, the control unit 56 instructs the direction processing unit 62 to designate a direction vector corresponding to the designated direction θz and instructs the sensitivity adjustment unit 64 to designate the instruction sensitivity σz. Therefore, the directivity direction of the acoustic signal V generated by the signal processing unit 52 is updated to the instruction direction θz, and the sound collection sensitivity of the acoustic signal V is updated to the instruction sensitivity σz. The control of the sound collection characteristic by the control unit 56 is executed as needed every time the receiving unit 22 receives the instruction information Z. For the generation of the direction vector by the control unit 56, a known technique of sound source separation (for example, independent component analysis or adaptive beam forming) is arbitrarily employed.

次に、通信装置Ｄ1の利用者Ｕ1と通信装置Ｄ2の利用者Ｕ2とが通話する図１の状況を想定して本実施形態の動作の具体例を説明する。放音機器３４から再生される利用者Ｕ1の発声音が聴取し難いと通話中に感じた通信装置Ｄ2の利用者Ｕ2は、自身の通信装置Ｄ2の入力機器３２を適宜に操作することで指示方向θzおよび指示感度σzを指定する。   Next, a specific example of the operation of the present embodiment will be described assuming the situation of FIG. 1 in which the user U1 of the communication device D1 and the user U2 of the communication device D2 talk. The user U2 of the communication device D2 who feels during a call that the utterance sound of the user U1 reproduced from the sound emitting device 34 is difficult to hear is instructed by appropriately operating the input device 32 of his communication device D2. Specify the direction θz and the indication sensitivity σz.

通信装置Ｄ2では、利用者Ｕ2から指示された指示方向θzおよび指示感度σzを含む指示情報Ｚが指示生成部５４にて生成されたうえで送信部２４から通信網２００に送信される。他方、通信装置Ｄ1では、通信装置Ｄ2から送信された指示情報Ｚを受信部２２が通信網２００から受信し、この指示情報Ｚで指示される収音特性（指向方向，収音感度）の音響信号Ｖが生成されるように制御部５６が信号処理部５２を制御する。指示情報Ｚに応じた更新後の収音特性の音響信号Ｖが信号処理部５２にて生成されたうえで通信装置Ｄ1の送信部２４から通信網２００に送信される。   In the communication device D2, the instruction information Z including the instruction direction θz and the instruction sensitivity σz instructed by the user U2 is generated by the instruction generator 54 and then transmitted from the transmitter 24 to the communication network 200. On the other hand, in the communication device D1, the receiving unit 22 receives the instruction information Z transmitted from the communication device D2 from the communication network 200, and the sound of the sound collection characteristics (directivity direction, sound collection sensitivity) indicated by the instruction information Z is received. The control unit 56 controls the signal processing unit 52 so that the signal V is generated. An acoustic signal V having an updated sound collection characteristic corresponding to the instruction information Z is generated by the signal processing unit 52 and then transmitted from the transmission unit 24 of the communication device D1 to the communication network 200.

通信装置Ｄ1から通信網２００に送信された音響信号Ｖは、通信装置Ｄ2の受信部２２にて受信されたうえで放音機器３４から再生される。利用者Ｕ2は、放音機器３４からの再生音（利用者Ｕ1の発声音）を確認しながら入力機器３２を適宜に操作することで、自身が聴取し易い特性となるように通信装置Ｄ1での収音特性を実時間的に調整することが可能である。なお、以上では利用者Ｕ2が通信装置Ｄ1での収音特性を指示する場合を例示したが、利用者Ｕ1の指示に応じた通信装置Ｄ2の収音特性の制御も同様の手順で実行される。   The acoustic signal V transmitted from the communication device D1 to the communication network 200 is received by the receiving unit 22 of the communication device D2, and then reproduced from the sound emitting device 34. The user U2 appropriately operates the input device 32 while confirming the reproduced sound from the sound emitting device 34 (speaking sound of the user U1), so that the user U2 can easily listen to the communication device D1. It is possible to adjust the sound collection characteristics of the real time. In addition, although the case where the user U2 instructed the sound collection characteristic in the communication apparatus D1 was illustrated above, the control of the sound collection characteristic of the communication apparatus D2 according to the instruction from the user U1 is executed in the same procedure. .

以上に説明したように、本実施形態においては、利用者が入力機器３２に付与した操作に応じて相手側通信装置Ｄの収音特性（指向方向，収音感度）が制御されるから、各通信装置Ｄの利用者は、通話相手に口頭で要求することなく、自身が聴取し易いように相手側通信装置Ｄでの収音特性を調整できるという利点がある。   As described above, in the present embodiment, the sound collection characteristics (direction direction, sound collection sensitivity) of the counterpart communication device D are controlled in accordance with the operation given to the input device 32 by the user. There is an advantage that the user of the communication device D can adjust the sound collection characteristics of the communication device D on the other side so that the user can easily listen without making a verbal request to the communication partner.

＜Ｂ：第２実施形態＞
次に、本発明の第２実施形態について説明する。なお、以下の各例示において作用や機能が第１実施形態と同等である要素については、以上と同じ符号を流用して各々の詳細な説明を適宜に省略する。 <B: Second Embodiment>
Next, a second embodiment of the present invention will be described. In addition, about the element in which an effect | action and a function are equivalent to 1st Embodiment in each following illustration, the same code | symbol as the above is diverted and each detailed description is abbreviate | omitted suitably.

図４は、第２実施形態に係る各通信装置Ｄの記憶装置１４の模式図である。図４に示すように、第２実施形態の通信装置Ｄの制御部５６は、受信部２２が過去に受信した複数の指示情報Ｚ（通話相手からの指示の履歴）を記憶装置１４に格納する。指示情報Ｚは、相手側通信装置Ｄとの通信毎に記憶装置１４に記憶される。相手側通信装置Ｄとの１回の通信中に複数の指示情報Ｚを受信した場合、制御部５６は、複数の指示情報Ｚのうち最後の指示情報Ｚ（すなわち、利用者が聴取し易いと最終的に判断した収音特性を示す指示情報Ｚ）を記憶装置１４に格納する。   FIG. 4 is a schematic diagram of the storage device 14 of each communication device D according to the second embodiment. As illustrated in FIG. 4, the control unit 56 of the communication device D according to the second embodiment stores, in the storage device 14, a plurality of instruction information Z (instruction history from the call partner) received by the receiving unit 22 in the past. . The instruction information Z is stored in the storage device 14 for each communication with the counterpart communication device D. When a plurality of instruction information Z is received during one communication with the counterpart communication device D, the control unit 56 determines that the last instruction information Z among the plurality of instruction information Z (that is, it is easy for the user to listen). The instruction information Z) indicating the finally determined sound collection characteristic is stored in the storage device 14.

制御部５６は、記憶装置１４に記憶された複数の指示情報Ｚを平均することで指示情報Ｚaveを生成して記憶装置１４に格納する。指示情報Ｚaveは、記憶装置１４に記憶された各指示情報Ｚの指示方向θzを平均した指示方向θaveと、各指示情報Ｚの指示感度σzを平均した指示感度σaveとを含んで構成される。制御部５６が指示情報Ｚaveを算定する時期は任意であるが、例えば、指示情報Ｚが記憶装置１４に追加された場合や利用者が入力機器３２を操作した場合に指示情報Ｚaveを算定する構成が採用され得る。   The control unit 56 generates the instruction information Zave by averaging the plurality of instruction information Z stored in the storage device 14 and stores the instruction information Zave in the storage device 14. The instruction information Zave includes an instruction direction θave obtained by averaging the instruction directions θz of the instruction information Z stored in the storage device 14 and an instruction sensitivity σave obtained by averaging the instruction sensitivities σz of the instruction information Z. For example, when the instruction information Z is added to the storage device 14 or when the user operates the input device 32, the control unit 56 calculates the instruction information Zave. Can be employed.

相手側通信装置Ｄとの通信を開始する場合、制御部５６は、信号処理部５２が生成する音響信号Ｖの収音特性（指向方向，収音感度）を、記憶装置１４に格納された指示情報Ｚave（指示方向θave，指示感度σave）に応じて可変に制御する。すなわち、音響信号Ｖの収音特性が初期化される。以後の通話中は、第１実施形態と同様に、相手側通信装置Ｄから受信した指示情報Ｚに応じて音響信号Ｖの収音特性が随時に調整され得る。   When starting communication with the counterpart communication device D, the control unit 56 indicates the sound collection characteristics (directivity direction, sound collection sensitivity) of the acoustic signal V generated by the signal processing unit 52 in the storage device 14. Control is variably performed according to information Zave (instruction direction θave, instruction sensitivity σave). That is, the sound collection characteristic of the acoustic signal V is initialized. During a subsequent call, the sound collection characteristic of the acoustic signal V can be adjusted as needed according to the instruction information Z received from the counterpart communication device D, as in the first embodiment.

以上に説明したように、本実施形態においては、通信装置Ｄが過去に受信した複数の指示情報Ｚを平均した指示情報Ｚaveが信号処理部５２の処理に適用されるから、指示情報Ｚaveを利用した制御後の収音特性は、通話相手が聴取し易い特性である可能性が高い。したがって、各通信装置Ｄの利用者が相手側通信装置Ｄの収音特性を調整する負担が軽減されるという利点がある。   As described above, in this embodiment, the instruction information Zave obtained by averaging the plurality of instruction information Z received by the communication device D in the past is applied to the processing of the signal processing unit 52, and thus the instruction information Zave is used. There is a high possibility that the collected sound characteristics after the control are easily heard by the other party. Therefore, there is an advantage that the burden of the user of each communication device D adjusting the sound collection characteristics of the counterpart communication device D is reduced.

＜Ｃ：第３実施形態＞
図５は、第３実施形態に係る各通信装置Ｄの記憶装置１４の模式図である。図５に示すように、第３実施形態の通信装置Ｄの記憶装置１４は、過去に通信した相手側通信装置Ｄ毎（通話相手毎）に指示情報Ｚ（Ｚa，Ｚb，……）を記憶する。例えば、前回の通話中に相手側通信装置Ｄから最後に受信した指示情報Ｚが、その相手側通信装置Ｄの指示情報Ｚとして記憶装置１４に記憶される。また、第２実施形態と同様に、１個の相手側通信装置Ｄから過去に受信した複数の指示情報Ｚの平均値（Ｚave）をその相手側通信装置Ｄの指示情報Ｚとして記憶装置１４に記憶する構成も採用され得る。 <C: Third Embodiment>
FIG. 5 is a schematic diagram of the storage device 14 of each communication device D according to the third embodiment. As shown in FIG. 5, the storage device 14 of the communication device D according to the third embodiment stores the instruction information Z (Za, Zb,...) For each partner communication device D that communicated in the past (each call partner). To do. For example, the instruction information Z last received from the counterpart communication device D during the previous call is stored in the storage device 14 as the instruction information Z of the counterpart communication device D. Similarly to the second embodiment, an average value (Zave) of a plurality of instruction information Z received in the past from one counterpart communication apparatus D is stored in the storage device 14 as instruction information Z of the counterpart communication apparatus D. A storage configuration may also be employed.

相手側通信装置Ｄとの通信の開始時に、制御部５６は、記憶装置１４に通信装置Ｄ毎に記憶された複数の指示情報Ｚのうち今回の相手側通信装置Ｄに対応する指示情報Ｚを選択し、その指示情報Ｚに応じて信号処理部５２（音響信号Ｖの収音特性）を制御する。すなわち、相手側通信装置Ｄに送信される音響信号Ｖの収音特性が、その相手側通信装置Ｄから過去に受信した指示情報Ｚに応じて初期化される。以後の通話中は、第１実施形態と同様に、相手側通信装置Ｄから受信した指示情報Ｚに応じて音響信号Ｖの収音特性が随時に調整され得る。なお、相手側通信装置Ｄについて指示情報Ｚが生成されていない場合（すなわち、相手側通信装置Ｄと初めて通信する場合）には所定の初期値が指示情報Ｚとして適用される。   At the start of communication with the counterpart communication device D, the control unit 56 displays the instruction information Z corresponding to the current counterpart communication device D among the plurality of instruction information Z stored for each communication device D in the storage device 14. The signal processing unit 52 (sound collecting characteristic of the acoustic signal V) is controlled according to the instruction information Z. That is, the sound collection characteristic of the acoustic signal V transmitted to the counterpart communication device D is initialized according to the instruction information Z received in the past from the counterpart communication device D. During a subsequent call, the sound collection characteristic of the acoustic signal V can be adjusted as needed according to the instruction information Z received from the counterpart communication device D, as in the first embodiment. Note that when the instruction information Z is not generated for the counterpart communication device D (that is, when communicating with the counterpart communication device D for the first time), a predetermined initial value is applied as the instruction information Z.

以上に説明したように、本実施形態においては、各相手側通信装置Ｄから過去に受信した指示情報Ｚが、その相手側通信装置Ｄとの通信時に信号処理部５２による処理に適用されるから、第２実施形態と同様に、通話相手にとって聴取し易い収音特性が実現される。したがって、各通信装置Ｄの利用者が相手側通信装置Ｄの収音特性を調整する負担が軽減されるという利点がある。また、相手側通信装置Ｄ毎に指示情報Ｚが記憶されるから、通信装置Ｄの利用者毎に最適な収音特性が相違する場合でも、相手側通信装置Ｄの収音特性を個々の利用者にとって適切な特性に調整できるという利点もある。   As described above, in the present embodiment, the instruction information Z received in the past from each counterpart communication device D is applied to the processing by the signal processing unit 52 when communicating with the counterpart communication device D. As in the second embodiment, a sound collection characteristic that is easy for the other party to hear is realized. Therefore, there is an advantage that the burden of the user of each communication device D adjusting the sound collection characteristics of the counterpart communication device D is reduced. In addition, since the instruction information Z is stored for each counterpart communication device D, even if the optimum sound collection characteristic is different for each user of the communication device D, the sound collection characteristics of the counterpart communication device D are used individually. There is also an advantage that it can be adjusted to an appropriate characteristic for a person.

＜Ｄ：第４実施形態＞
図６は、第４実施形態における通信装置Ｄのブロック図である。図６に示すように、第４実施形態の通信装置Ｄの記憶装置１４は複数の収音特性Ｆを記憶する。各収音特性Ｆは、指示方向θzと指示感度σzとを含んで構成される。指示方向θzおよび指示感度σzの双方または片方は、記憶装置１４に記憶された収音特性Ｆ毎に相違する。複数の収音特性Ｆの各々は、相異なる典型的な通話環境のもとで音響信号Ｖの収音特性が最適化されるように予め用意される。他方、指示生成部５４は、複数の収音特性Ｆの何れかを指定する指示情報Ｚを、入力機器３２に対する利用者からの操作に応じて生成する。すなわち、本実施形態の指示情報Ｚは、指示方向θzや指示感度σzを含まない。 <D: Fourth Embodiment>
FIG. 6 is a block diagram of the communication device D in the fourth embodiment. As illustrated in FIG. 6, the storage device 14 of the communication device D according to the fourth embodiment stores a plurality of sound collection characteristics F. Each sound collection characteristic F includes an instruction direction θz and an instruction sensitivity σz. Both or one of the instruction direction θz and the instruction sensitivity σz is different for each sound collection characteristic F stored in the storage device 14. Each of the plurality of sound collection characteristics F is prepared in advance so that the sound collection characteristics of the acoustic signal V are optimized under different typical call environments. On the other hand, the instruction generation unit 54 generates instruction information Z for designating any one of the plurality of sound collection characteristics F in accordance with an operation from the user on the input device 32. That is, the instruction information Z of the present embodiment does not include the instruction direction θz and the instruction sensitivity σz.

受信部２２が相手側通信装置Ｄから指示情報Ｚを受信すると、制御部５６は、記憶装置１４に記憶された複数の収音特性Ｆのうち受信部２２が受信した指示情報Ｚで指定される収音特性Ｆを選択し、その収音特性Ｆの指示方向θzおよび指示感度σzに応じて信号処理部５２（音響信号Ｖの収音特性）を制御する。以後の通話中にも、制御部５６は、相手側通信装置Ｄから受信した指示情報Ｚに応じた収音特性Ｆを選択的に信号処理部５２の制御に適用する。   When the receiving unit 22 receives the instruction information Z from the counterpart communication device D, the control unit 56 is specified by the instruction information Z received by the receiving unit 22 among the plurality of sound collection characteristics F stored in the storage device 14. The sound collection characteristic F is selected, and the signal processing unit 52 (the sound collection characteristic of the acoustic signal V) is controlled according to the instruction direction θz and the instruction sensitivity σz of the sound collection characteristic F. During the subsequent call, the control unit 56 selectively applies the sound collection characteristic F corresponding to the instruction information Z received from the counterpart communication device D to the control of the signal processing unit 52.

以上の形態においては、事前に用意された複数の収音特性Ｆの何れかが指示情報Ｚに応じて選択されるから、相手側通信装置Ｄの利用者が指示方向θzおよび指示感度σzの双方を指示する場合と比較して、各通信装置Ｄの利用者の負担を軽減することが可能である。   In the above embodiment, since any one of the plurality of sound collection characteristics F prepared in advance is selected according to the instruction information Z, the user of the counterpart communication device D can use both the instruction direction θz and the instruction sensitivity σz. It is possible to reduce the burden on the user of each communication device D as compared with the case of instructing.

＜Ｅ：第５実施形態＞
図７は、本発明の第５実施形態における通信装置Ｄのブロック図である。図７に示すように、第５実施形態の通信装置Ｄは、第１実施形態の要素に報知部３６を追加した構成である。報知部３６は、相手側通信装置Ｄから受信した指示情報Ｚに応じて自装置の収音特性が制御されていることを利用者に報知する。例えば、収音特性の制御中であることを示す画像を表示する表示機器や、収音特性の制御中であることを示す音声を放射する放音機器が報知部３６として採用され得る。なお、放音機器３４を報知部３６として流用した構成も好適である。相手側通信装置Ｄから受信した指示情報Ｚに応じて信号処理部５２を制御すると、制御部５６は、指示情報Ｚに応じた制御の実行中であることを報知部３６から利用者に報知する。 <E: Fifth Embodiment>
FIG. 7 is a block diagram of a communication device D according to the fifth embodiment of the present invention. As illustrated in FIG. 7, the communication device D of the fifth embodiment has a configuration in which a notification unit 36 is added to the elements of the first embodiment. The notification unit 36 notifies the user that the sound collection characteristic of the own device is controlled according to the instruction information Z received from the counterpart communication device D. For example, a display device that displays an image indicating that sound collection characteristics are being controlled and a sound emission device that emits sound indicating that sound collection characteristics are being controlled may be employed as the notification unit 36. A configuration in which the sound emitting device 34 is used as the notification unit 36 is also suitable. When the signal processing unit 52 is controlled according to the instruction information Z received from the counterpart communication device D, the control unit 56 notifies the user from the notification unit 36 that the control according to the instruction information Z is being executed. .

以上の形態においては、通話相手からの指示に応じて自装置の収音特性が調整されていることが報知部３６から報知されるため、自装置の収音特性が知らずに調整される事態を回避できるという利点がある。なお、以上の説明では第１実施形態を基礎として第５実施形態を説明したが、報知部３６を具備する第５実施形態の構成は、第２実施形態から第４実施形態にも同様に適用され得る。   In the above embodiment, since the notification unit 36 notifies that the sound collection characteristic of the own apparatus is adjusted according to an instruction from the other party, there is a situation in which the sound collection characteristic of the own apparatus is adjusted without knowing it. There is an advantage that it can be avoided. In the above description, the fifth embodiment has been described based on the first embodiment. However, the configuration of the fifth embodiment including the notification unit 36 is similarly applied to the second to fourth embodiments. Can be done.

＜Ｆ：変形例＞
以上の各形態は多様に変形され得る。具体的な変形の態様を以下に例示する。以下の例示から任意に選択された２以上の態様は適宜に併合され得る。 <F: Modification>
Each of the above forms can be variously modified. Specific modifications are exemplified below. Two or more aspects arbitrarily selected from the following examples can be appropriately combined.

（１）変形例１
音響信号Ｖの収音特性を制御する方法は適宜に変更される。例えば、公知のサウンドズーム技術を利用して収音特性を制御する構成が採用され得る。また、以上の例示では複数の音響信号ＸAに対するビーム形成処理で収音特性を調整したが、収音特性（指向方向および収音感度）が可変に制御される公知の収音体（マイクロホン）を利用した構成も採用され得る。収音体の単独で収音特性を変更できる構成（指向方向を変更し得る指向性の収音体を利用した構成）のもとでは、複数の収音体４２を配置した構成や信号処理部５２を具備する構成は省略され得る。以上の説明から理解されるように、以上の各形態における複数の収音体４２および信号処理部５２は、可変の指向特性で収音された音響信号Ｖを生成する要素（収音手段）の例示である。 (1) Modification 1
The method for controlling the sound collection characteristics of the acoustic signal V is appropriately changed. For example, a configuration for controlling sound collection characteristics using a known sound zoom technique may be employed. In the above example, the sound collection characteristics are adjusted by beam forming processing for a plurality of acoustic signals XA. However, a known sound collection body (microphone) whose sound collection characteristics (directivity direction and sound collection sensitivity) are variably controlled is used. A utilized configuration may also be employed. A configuration in which a plurality of sound collectors 42 are arranged or a signal processing unit under a configuration in which the sound collection characteristics of the sound collector can be changed independently (a configuration using a directional sound collector that can change the directivity direction) The configuration including 52 may be omitted. As can be understood from the above description, the plurality of sound collecting bodies 42 and the signal processing unit 52 in the above embodiments are elements (sound collecting means) that generate the acoustic signal V picked up with variable directivity characteristics. It is an example.

（２）変形例２
以上の各形態では、音声通話に利用される通信システム１００を例示したが、音声通話に加えて動画像も授受する通信システム（テレビ電話システムやテレビ会議システムや遠隔教育システム）に利用される通信装置にも本発明が適用され得る。また、以上の各形態では携帯電話機を通信装置Ｄとして例示したが、通信網２００と有線で通信する電話機も通信装置Ｄとして採用され得る。 (2) Modification 2
In each of the above embodiments, the communication system 100 used for a voice call is illustrated. However, a communication used for a communication system (video phone system, video conference system, or remote education system) that transmits and receives a moving image in addition to a voice call. The present invention can also be applied to an apparatus. Further, in each of the above embodiments, the mobile phone is exemplified as the communication device D. However, a phone that communicates with the communication network 200 by wire can also be adopted as the communication device D.

（３）変形例３
相手側通信装置Ｄからの収音特性の調整の可否（許可／禁止）を、例えば入力機器３２に対する操作に応じて可変に設定する構成も採用され得る。収音特性の調整を許可する場合には以上の各形態と同様に指示情報Ｚに応じて収音特性が制御され、収音特性の調整を禁止する場合には、相手側通信装置Ｄからの指示情報Ｚを無視する。 (3) Modification 3
A configuration may also be employed in which whether or not the sound collection characteristic from the counterpart communication device D is adjustable (permitted / prohibited) is variably set according to an operation on the input device 32, for example. When the adjustment of the sound collection characteristic is permitted, the sound collection characteristic is controlled according to the instruction information Z in the same manner as in the above embodiments, and when the adjustment of the sound collection characteristic is prohibited, the communication from the partner communication device D is prohibited. The instruction information Z is ignored.

１００……通信システム、２００……通信網、Ｄ（Ｄ1，Ｄ2）……通信装置、１２……演算処理装置、１４……記憶装置、２０……通信機器、２２……受信部、２４……送信部、３２……入力機器、３４……放音機器、３６……報知部、４０……収音機器、４２……収音体、５２……信号処理部、５４……指示生成部、５６……制御部、６２……指向処理部、６４……感度調整部。
DESCRIPTION OF SYMBOLS 100 ... Communication system, 200 ... Communication network, D (D1, D2) ... Communication apparatus, 12 ... Arithmetic processing apparatus, 14 ... Memory | storage device, 20 ... Communication apparatus, 22 ... Reception part, 24 ... ... Transmission unit, 32 ... Input device, 34 ... Sound emission device, 36 ... Notification unit, 40 ... Sound collection device, 42 ... Sound collection body, 52 ... Signal processing unit, 54 ... Instruction generation unit , 56... Control unit, 62... Direction processing unit, 64.

Claims (5)

利用者の操作に応じた指示情報を送信する相手側通信装置と通信する通信装置であって、
可変の指向特性で収音された音響信号を生成する収音手段と、
前記相手側通信装置から指示情報を受信する受信手段と、
利用者が指示を入力する入力機器と、
前記入力機器に対する利用者からの指示に応じて収音特性の調整の可否を設定し、調整を許可する場合には、前記受信手段が受信した指示情報に応じて前記収音手段の指向特性を制御する一方、調整を禁止する場合には前記指示情報を無視する制御手段と、
前記収音手段が生成した音響信号を前記相手側通信装置に送信する送信手段と
を具備する通信装置。
A communication device that communicates with a counterpart communication device that transmits instruction information according to a user's operation,
Sound collection means for generating an acoustic signal collected with variable directivity characteristics;
Receiving means for receiving instruction information from the counterpart communication device;
An input device for the user to input instructions;
When setting whether or not to adjust the sound collection characteristic according to an instruction from the user with respect to the input device and permitting the adjustment, the directivity characteristic of the sound collection means is set according to the instruction information received by the reception means. Control means for ignoring the instruction information when the adjustment is prohibited ,
A communication device comprising: transmission means for transmitting an acoustic signal generated by the sound collection means to the counterpart communication device.
前記制御手段は、前記受信手段が受信した複数の指示情報を平均し、平均後の指示情報に応じて前記収音手段の指向特性を制御する
請求項１の通信装置。 The communication apparatus according to claim 1, wherein the control unit averages a plurality of instruction information received by the receiving unit and controls directivity characteristics of the sound collecting unit according to the averaged instruction information. 前記受信手段が受信した指示情報を相手側通信装置毎に記憶する記憶手段を具備し、
前記制御手段は、相手側通信装置との通信時に、前記記憶手段が記憶する複数の指向特性のうち当該相手側通信装置に対応する指示情報に応じて前記収音手段の指向特性を制御する
請求項１の通信装置。 Comprising storage means for storing the instruction information received by the receiving means for each counterpart communication device;
The control means controls a directivity characteristic of the sound collecting means according to instruction information corresponding to the counterpart communication device among a plurality of directivity characteristics stored in the storage means during communication with the counterpart communication device. Item 1. The communication device according to Item 1. 相異なる複数の指向特性を記憶する記憶手段を具備し、
前記制御手段は、前記収音手段の指向特性を、前記記憶手段が記憶する複数の指向特性のうち前記指示情報に応じて選択した指向特性に制御する
請求項１の通信装置。 Comprising storage means for storing a plurality of different directivity characteristics;
The communication device according to claim 1, wherein the control unit controls the directivity characteristic of the sound collecting unit to a directivity characteristic selected according to the instruction information from among a plurality of directivity characteristics stored in the storage unit. 前記受信手段が受信した指示情報に応じた指向特性の制御の実行を利用者に報知する報知手段
を具備する請求項１から請求項４の何れかの通信装置。
The communication apparatus according to any one of claims 1 to 4, further comprising a notification unit that notifies a user of execution of directivity control according to the instruction information received by the reception unit.
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