JP2006038955A - Voiceprint recognition system - Google Patents

Voiceprint recognition system Download PDF

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JP2006038955A
JP2006038955A JP2004214832A JP2004214832A JP2006038955A JP 2006038955 A JP2006038955 A JP 2006038955A JP 2004214832 A JP2004214832 A JP 2004214832A JP 2004214832 A JP2004214832 A JP 2004214832A JP 2006038955 A JP2006038955 A JP 2006038955A
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voiceprint
telephone
data
voice
recognition system
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Tsutomu Takahashi
勉 高橋
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Docomo Engineering Tohoku Inc
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Docomo Engineering Tohoku Inc
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<P>PROBLEM TO BE SOLVED: To efficiently prevent fraud etc., by a telephone call. <P>SOLUTION: A voiceprint recognition system 10 is equipped with: a voiceprint registration database 11 in which voiceprint data are stored while made to correspond to mobile telephone sets 20; a route detection part 12 which detects the route of a call connection between a calling terminal 20a and a called terminal 20b in a mobile communication network 30, which is established by a call from a call originating terminal; a voice acquisition part 13 which acquires voice data sent from the calling terminal 20a to the called terminal 20b from the detected route; and a voiceprint collating part 14 which collates the voiceprint of the voiceprint data with the voiceprint of the voice data acquired by the voice acquisition part 13 by referring to voiceprint data corresponding to the called terminal 20b, which is stored in the voiceprint registration database 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、電話機間で送受信される音声の声紋認識システムに関する。   The present invention relates to a voiceprint recognition system for voice transmitted and received between telephones.

携帯電話機の普及等に伴い、「おれおれ詐欺」等の電話機を使用した犯罪が増加しており、社会問題となっている。なお、上記内容は社会的な背景であるので、技術的な内容の先行技術文献は存在しない。   With the widespread use of mobile phones, crimes using phones such as “I'm fraudulent” are increasing, which is a social problem. In addition, since the said content is a social background, the prior art document of a technical content does not exist.

「おれおれ詐欺」とは、子供や孫等を装って電話をかけ、金品を騙し取るというものである。このような詐欺に気をつけることが、ユーザに対して呼びかけられているが、より効率的な対策が求められていた。   “I'm a fraud” is a phone call that pretends to be a child or grandchild, and swindles money. Although attention has been sought to users to pay attention to such scams, more efficient countermeasures have been demanded.

本発明は、上記のような電話の通話による詐欺等を効率的に防止することを可能とする声紋認識システムを提供することを目的とする。   An object of the present invention is to provide a voiceprint recognition system that can efficiently prevent fraud and the like due to telephone calls as described above.

上記目的を達成するために、本発明に係る声紋認識システムは、電話機に対応させて声紋データを記憶した声紋登録データベースと、第１の電話機からの発呼により確立された、当該第１の電話機と第２の電話機との間の呼接続の電話網における経路を検出する経路検出手段と、第１の電話機から第２の電話機に送信される音声データを、経路検出手段により検出された経路から取得する音声取得手段と、声紋登録データベースに記憶された、第２の電話機に対応した声紋データを参照して、当該声紋データの声紋と音声取得手段により取得された音声データの声紋との照合を行う声紋照合手段と、を備えることを特徴とする。   In order to achieve the above object, a voiceprint recognition system according to the present invention includes a voiceprint registration database storing voiceprint data corresponding to a telephone, and the first telephone set established by a call from the first telephone. Detecting means for detecting a route in the telephone network of the call connection between the first telephone and the second telephone, and voice data transmitted from the first telephone to the second telephone from the path detected by the path detecting means. Refer to the voice print data corresponding to the second telephone stored in the voice print registration database and the voice print data stored in the voice print registration database, and collate the voice print of the voice print data with the voice print of the voice data acquired by the voice acquisition means. And a voiceprint collating means for performing.

本発明に係る声紋認識システムでは、声紋登録データベースに記憶された声紋データの声紋と第１の電話機から第２の電話機に送信される音声データの声紋データとが照合される。従って、声紋登録データベースに第２の電話機のユーザが確認すべき通話相手の声紋データを記憶させておき、上記照合の結果が第２の電話機のユーザにより通話相手（第１の電話機のユーザ）の確認等に用いられれば、電話の通話による詐欺等を効率的に防止することができる。   In the voiceprint recognition system according to the present invention, the voiceprint data of voiceprint data stored in the voiceprint registration database is collated with the voiceprint data of voice data transmitted from the first telephone to the second telephone. Accordingly, the voice print data of the call partner to be confirmed by the user of the second telephone is stored in the voice print registration database, and the result of the collation is determined by the user of the second telephone as the call partner (the user of the first telephone). If used for confirmation or the like, fraud or the like due to telephone calls can be efficiently prevented.

また、声紋認識システムは、第２の電話機から送信される、音声データの取得要求の情報を受信する要求受信手段を更に備え、音声取得手段は、要求受信手段による、取得要求の情報の受信に応じて音声データを取得する、こととするのが望ましい。この構成によれば、第２の電話機のユーザが通話相手の確認を行いたい場合等のみに処理が行われ、声紋認識システムの負荷を軽減すること等ができる。   The voiceprint recognition system further includes request receiving means for receiving voice data acquisition request information transmitted from the second telephone, and the voice acquisition means receives the acquisition request information by the request receiving means. It is desirable to acquire voice data accordingly. According to this configuration, the process is performed only when the user of the second telephone wants to confirm the other party, and the load on the voiceprint recognition system can be reduced.

また、経路検出手段は、経路に含まれる交換機を特定し、音声取得手段は、経路検出手段により特定された交換機から音声データを取得する、こととするのが望ましい。呼接続の経路には交換機が含まれるため、この構成によれば、第１の電話機から第２の電話機に送信される音声データを確実に取得することができる。   Further, it is desirable that the route detection unit specifies an exchange included in the route, and the voice acquisition unit acquires voice data from the exchange specified by the route detection unit. Since the call connection path includes an exchange, according to this configuration, it is possible to reliably acquire voice data transmitted from the first telephone to the second telephone.

また、声紋認識システムは、声紋照合手段による照合の結果に関する情報を第２の電話機に送信する結果送信手段を更に備えることとするのが望ましい。この構成によれば、第２の電話機のユーザは、照合の結果に基づいた対処をすることができる。   The voiceprint recognition system preferably further includes a result transmission means for transmitting information related to the result of the collation by the voiceprint collation means to the second telephone. According to this configuration, the user of the second telephone can take measures based on the result of collation.

また、声紋認識システムは、第２の電話機から発呼により確立された、当該第２の電話機と別の電話機との間の呼接続において、当該別の電話機から当該第２の電話機に送信される音声データを取得し、当該音声データを声紋登録データベースに当該第２の電話機に対応する声紋データとして登録する声紋データ登録手段を更に備えることとするのが望ましい。この構成によれば、効率的に声紋登録データベースに声紋データを予め記憶させることができる。   The voiceprint recognition system is transmitted from the second telephone to the second telephone in a call connection established between the second telephone and the second telephone established by the second telephone. It is desirable to further include voiceprint data registration means for acquiring voice data and registering the voice data as voiceprint data corresponding to the second telephone in the voiceprint registration database. According to this configuration, voiceprint data can be efficiently stored in advance in the voiceprint registration database.

本発明に係る声紋認識システムによれば、声紋登録データベースに記憶された声紋データの声紋と第１の電話機から第２の電話機に送信される音声データの声紋データとが照合されるので、電話の通話による詐欺等を効率的に防止することができる。   According to the voiceprint recognition system of the present invention, the voiceprint data of voiceprint data stored in the voiceprint registration database is collated with the voiceprint data of voice data transmitted from the first telephone to the second telephone. It is possible to efficiently prevent fraud and the like by calling.

以下、図面を参照しながら、本発明に係る声紋認識システムの実施形態について説明する。   Hereinafter, an embodiment of a voiceprint recognition system according to the present invention will be described with reference to the drawings.

図１に本実施形態の声紋認識システム１０の構成、及び声紋認識システム１０の接続対象である移動体通信システムの構成を示す。移動体通信システムは、複数の携帯電話機２０と移動体通信網３０（電話網）とを含んで構成されている。複数の携帯電話機２０各々は、各ユーザにより使用され、別の携帯電話機２０と移動体通信網３０での呼接続を確立することによりユーザ同士が通話することを可能とする。本実施形態においては、携帯電話機２０ａを発信側の端末（第１の電話機）、携帯電話機２０ｂを着信側の端末（第２の電話機）とする。   FIG. 1 shows a configuration of a voiceprint recognition system 10 according to the present embodiment and a configuration of a mobile communication system that is a connection target of the voiceprint recognition system 10. The mobile communication system includes a plurality of mobile phones 20 and a mobile communication network 30 (telephone network). Each of the plurality of mobile phones 20 is used by each user, and allows the users to talk with each other by establishing a call connection between another mobile phone 20 and the mobile communication network 30. In the present embodiment, it is assumed that the mobile phone 20a is a calling terminal (first telephone) and the mobile phone 20b is a receiving terminal (second telephone).

移動体通信網３０は、複数の交換機３１と、複数のＢＴＳ（Base Transceiver Station）３２とを含んで構成される。交換機３１は、携帯電話機２０からの発信に基づいて回線を接続する装置である。ＢＴＳ３２は、携帯電話機２０との間で無線による通信を行う装置である。ＢＴＳ３２は、基地局とも呼ばれる。なお、移動体通信網３０は、音声通信だけでなくデータ通信も可能であるものとする。   The mobile communication network 30 includes a plurality of exchanges 31 and a plurality of BTSs (Base Transceiver Stations) 32. The exchange 31 is a device for connecting a line based on a call from the mobile phone 20. The BTS 32 is a device that performs wireless communication with the mobile phone 20. The BTS 32 is also called a base station. Note that the mobile communication network 30 is capable of not only voice communication but also data communication.

引き続いて、声紋認識システム１０の各機能について説明する。図１に示すように、声紋認識システム１０は、声紋登録データベース１１と、経路検出部１２（経路検出手段）と、音声取得部１３（音声取得手段）と、声紋照合部１４（声紋照合手段）と、要求受信部１５（要求受信手段）と、結果送信部１６（結果送信手段）とを備える。声紋認識システム１０は、具体的には、ＣＰＵ、メモリ及び記憶装置等から構成されるサーバ装置により実現されることが好ましい。なお、図１においては、声紋認識システム１０は移動体通信網３０の外に位置しているが移動体通信網３０に含まれていてもよい。   Subsequently, each function of the voiceprint recognition system 10 will be described. As shown in FIG. 1, the voiceprint recognition system 10 includes a voiceprint registration database 11, a path detection unit 12 (path detection unit), a voice acquisition unit 13 (voice acquisition unit), and a voiceprint collation unit 14 (voiceprint collation unit). And a request receiving unit 15 (request receiving unit) and a result transmitting unit 16 (result transmitting unit). Specifically, the voiceprint recognition system 10 is preferably realized by a server device including a CPU, a memory, a storage device, and the like. In FIG. 1, the voiceprint recognition system 10 is located outside the mobile communication network 30, but may be included in the mobile communication network 30.

声紋登録データベース１１は、携帯電話機２０に対応させて、声紋データを記憶している。声紋登録データベース１１には、具体的には、図２に示すように、携帯電話機２０の電話番号が携帯電話機２０を特定する情報として保持され、その電話番号に対応して複数の声紋データが登録される。また、図２において“父”、“母”のように示される、登録された声紋データが誰の声紋かを示す情報を更に含めることとしてもよい。声紋登録データベース１１に登録される声紋データは、携帯電話機２０のユーザが、通話時に通話相手が本当にその相手であるか否か確認すべき者のデータであることが好ましい。   The voiceprint registration database 11 stores voiceprint data corresponding to the mobile phone 20. Specifically, as shown in FIG. 2, in the voiceprint registration database 11, the telephone number of the mobile phone 20 is held as information for specifying the mobile phone 20, and a plurality of voiceprint data is registered corresponding to the telephone number. Is done. Further, information indicating who the registered voiceprint data is, such as “father” and “mother” in FIG. 2, may be further included. The voiceprint data registered in the voiceprint registration database 11 is preferably data of a person who should confirm whether or not the user of the mobile phone 20 is really the other party during the call.

経路検出部１２は、発信端末２０ａと着信端末２０ｂとの間の呼接続の移動体通信網３０における経路を検出する。この検出は、具体的には、経路に含まれる交換機３１等を特定することにより行われることが好ましい。   The route detection unit 12 detects a route in the mobile communication network 30 of a call connection between the transmission terminal 20a and the reception terminal 20b. Specifically, this detection is preferably performed by specifying the exchange 31 or the like included in the route.

音声取得部１３は、発信端末２０ａから着信端末２０ｂに送信される音声データを、経路検出部１２により検出された経路から取得する。この取得は、具体的には、特定された交換機３１に、音声データを声紋認識システム１０に分岐させる命令を出すこと等により行われることとするのがよい。   The voice acquisition unit 13 acquires voice data transmitted from the transmission terminal 20 a to the reception terminal 20 b from the route detected by the route detection unit 12. Specifically, this acquisition is preferably performed by issuing a command for branching the voice data to the voiceprint recognition system 10 to the specified exchange 31.

声紋照合部１４は、音声取得部１３により取得された音声データの声紋と、声紋登録データベース１１に含まれる着信端末２０ｂに対応した声紋データの声紋とを照合する。この照合は、具体的には、音声取得部１３により取得された音声データの声紋と着信端末２０ｂに対応した声紋データの声紋の何れかとが一致するか否かの照合であることが好ましい。   The voiceprint collation unit 14 collates the voiceprint of the voice data acquired by the voice acquisition unit 13 with the voiceprint of the voiceprint data corresponding to the receiving terminal 20b included in the voiceprint registration database 11. Specifically, this collation is preferably a collation of whether or not the voice print of the voice data acquired by the voice acquisition unit 13 matches one of the voice prints of the voice print data corresponding to the receiving terminal 20b.

要求受信部１５は、着信端末２０ｂから送信される音声データの取得の要求を受信する。当該要求は、音声取得部１３による音声データの取得のトリガとなる。   The request receiving unit 15 receives a request for acquisition of voice data transmitted from the receiving terminal 20b. The request is a trigger for acquisition of audio data by the audio acquisition unit 13.

結果送信部１６は、声紋照合部１４による照合の結果に関する情報を着信端末２０ｂに送信する。当該情報の具体的な内容については、後述する。   The result transmission unit 16 transmits information related to the result of collation by the voiceprint collation unit 14 to the receiving terminal 20b. Specific contents of the information will be described later.

引き続いて、図３のシーケンス図を用いて本実施形態において実行される処理を説明する。発信端末２０ａから着信端末２０ｂへの発呼から処理が開始される。当該発呼がなされると、着信端末２０ｂの表示装置には、図４（ａ）に示すように、発信端末２０ａを特定する電話番号と着信があったことを着信端末２０ｂのユーザに知らせる「着信あり」という表示とが表示されることが好ましい。着信端末２０ｂのユーザがその表示等を受けて、発呼に対する着呼の操作を行うと、発信端末２０ａと着信端末２０ｂとの間には移動体通信網３０における呼接続が確立される（Ｓ０１）。呼接続は、図１に示すように、発信端末２０ａから順に、ＢＴＳ３２ａ、交換機３１ａ、交換機３１ｂ及びＢＴＳ３２ｂを経由して確立されるものとする。   Subsequently, processing executed in the present embodiment will be described with reference to the sequence diagram of FIG. Processing is started from a call from the calling terminal 20a to the receiving terminal 20b. When the call is made, as shown in FIG. 4A, the display device of the receiving terminal 20b informs the user of the receiving terminal 20b that the telephone number for specifying the calling terminal 20a and that there is an incoming call. It is preferable that an indication “incoming call” is displayed. When the user of the receiving terminal 20b receives the display and performs an incoming call operation for the outgoing call, a call connection in the mobile communication network 30 is established between the outgoing terminal 20a and the incoming terminal 20b (S01). ). As shown in FIG. 1, it is assumed that the call connection is established via the BTS 32a, the exchange 31a, the exchange 31b, and the BTS 32b in order from the transmission terminal 20a.

続いて、着信端末２０ｂのユーザが、着信端末２０ｂを操作することにより、声紋認識システム１０に音声データの取得要求の情報の送信を行う（Ｓ０２）。この送信は、ユーザが声紋認識システム１０による声紋認識を要求する場合にユーザの操作によりなされるのがよい。例えば、Ｓ０１において着信端末２０ｂの表示装置に表示される発信端末２０ａの電話番号に心当たりが無い場合等に行われる。あるいは、所定のルール等に従って自動的に行われてもよい。この送信は、データ通信（パケット通信）により当該要求のデータが送信されることにより行われることが好ましい。取得要求の情報の送信が行われると、着信端末２０ｂの表示装置に、図４（ｂ）に示すような、声紋認識システム１０により声紋認識の処理が開始されたことを示す表示がされることが好ましい。送信がされた声紋認識システム１０では、要求受信部１５が当該情報を受信する。なお、声紋認識システム１０による、着信端末２０ｂの特定は着信端末２０ｂの電話番号等の着信端末２０ｂを特定する情報を検出すること等により行われることが好ましい。   Subsequently, the user of the receiving terminal 20b operates the receiving terminal 20b to transmit the voice data acquisition request information to the voiceprint recognition system 10 (S02). This transmission is preferably performed by a user operation when the user requests voiceprint recognition by the voiceprint recognition system 10. For example, it is performed when the telephone number of the calling terminal 20a displayed on the display device of the receiving terminal 20b is not recognized in S01. Alternatively, it may be automatically performed according to a predetermined rule or the like. This transmission is preferably performed by transmitting the requested data by data communication (packet communication). When the acquisition request information is transmitted, a display indicating that the voiceprint recognition process is started by the voiceprint recognition system 10 as shown in FIG. 4B is displayed on the display device of the receiving terminal 20b. Is preferred. In the transmitted voiceprint recognition system 10, the request receiving unit 15 receives the information. The identification of the receiving terminal 20b by the voiceprint recognition system 10 is preferably performed by detecting information specifying the receiving terminal 20b such as the telephone number of the receiving terminal 20b.

続いて声紋認識システム１０では、要求受信部１５による受信をトリガとして、経路検出部１２が発信端末２０ａと着信端末２０ｂとの間の呼接続の移動体通信網３０における経路を検出する（Ｓ０３）。当該検出は上述したように、経路中の装置、例えば交換機３１を特定することで行われることが好ましい。   Subsequently, in the voiceprint recognition system 10, the route detection unit 12 detects the route in the mobile communication network 30 of the call connection between the transmission terminal 20a and the reception terminal 20b, triggered by reception by the request reception unit 15 (S03). . As described above, the detection is preferably performed by specifying a device in the route, for example, the exchange 31.

続いて、音声取得部１３が、互いのユーザの通話により発信端末２０ａから着信端末２０ｂに送信される音声データを取得する（Ｓ０４）。この音声データの取得は、特定された経路中の交換機３１の一つ（例えば、着信端末２０ｂ側の交換機３１ｂ）に、音声データを声紋認識システム１０に分岐させる命令を出し、分岐された音声データを取得することにより行われることとするのがよい。なお、発信端末２０ａから着信端末２０ｂに送信される音声データと、着信端末２０ｂから発信端末２０ａに送信される音声データとは、通常、別ケーブルで送受信がなされるので、容易に前者のみを取得することができる。   Subsequently, the voice acquisition unit 13 acquires voice data transmitted from the calling terminal 20a to the receiving terminal 20b by mutual user calls (S04). This voice data acquisition is performed by issuing a command to branch the voice data to the voiceprint recognition system 10 to one of the exchanges 31 (for example, the exchange 31b on the receiving terminal 20b side) in the specified route. It is good to be done by acquiring. Note that the voice data transmitted from the calling terminal 20a to the receiving terminal 20b and the voice data transmitted from the receiving terminal 20b to the calling terminal 20a are usually transmitted and received through separate cables, so that only the former is easily obtained. can do.

続いて、声紋照合部１４が、音声取得部１３により取得された音声データの声紋と、声紋登録データベース１１に、着信端末２０ｂに対応付けて記憶されている声紋データの声紋との照合を行う（Ｓ０５）。具体的には、声紋照合部１４は、着信端末２０ｂの電話番号をキーとして声紋登録データベース１１から、着信端末２０ｂに対応する声紋データを読み出し、既存の声紋比較アルゴリズム等を用いてそれら２つの声紋の照合を行う。声紋データが図２に示したように複数登録されている場合は、照合はその声紋データ毎に行われることが好ましい。   Subsequently, the voiceprint collation unit 14 collates the voiceprint of the voice data acquired by the voice acquisition unit 13 with the voiceprint of the voiceprint data stored in the voiceprint registration database 11 in association with the receiving terminal 20b ( S05). Specifically, the voiceprint matching unit 14 reads voiceprint data corresponding to the incoming terminal 20b from the voiceprint registration database 11 using the telephone number of the incoming terminal 20b as a key, and uses these two voiceprints using an existing voiceprint comparison algorithm or the like. Perform the verification. When a plurality of voiceprint data are registered as shown in FIG. 2, the collation is preferably performed for each voiceprint data.

続いて、結果送信部１６が声紋照合部１４による照合の結果に関する情報を着信端末２０ｂに送信する（Ｓ０６）。当該送信も、Ｓ０２における要求の送信と同様にデータ通信により行われることが好ましい。照合により、音声取得部１３により取得された音声データの声紋が声紋登録データベース１１に含まれる声紋データの声紋の何れか一つと一致するとされた場合は、一致するという旨の情報が送信される。例えば、図２に示す“父”のデータと一致した場合は、着信端末２０ｂの表示装置には、図４（ｃ）に示すような一致した旨の表示がなされることが好ましい。このように登録してある声紋に一致した場合は、通話相手は登録された相手であるので、着信端末２０ｂのユーザは安心して通話を続けることができる。   Subsequently, the result transmitting unit 16 transmits information related to the result of collation by the voiceprint collating unit 14 to the receiving terminal 20b (S06). The transmission is also preferably performed by data communication in the same manner as the request transmission in S02. If the voiceprint of the voice data acquired by the voice acquisition unit 13 matches with any one of the voiceprints of the voiceprint data included in the voiceprint registration database 11 by the collation, information indicating that the voiceprints match is transmitted. For example, when the data matches the “father” data shown in FIG. 2, it is preferable that the display indicating that the data matches is displayed on the display device of the receiving terminal 20 b as shown in FIG. When the voice print matches the registered voice print, the call partner is the registered call partner, so that the user of the receiving terminal 20b can continue the call with peace of mind.

その一方、音声取得部１３により取得された音声データの声紋が声紋登録データベース１１に含まれる声紋データの声紋の何れとも一致しないとされた場合は、その旨の情報が送信される。その場合、例えば、着信端末２０ｂの表示装置には、図４（ｄ）に示すような該当なしという旨の表示がなされることが好ましい。このように登録してある声紋に一致せず、通話相手が登録してある声紋の人間を装っている場合等は、通話相手は詐欺を行おうとしている可能性があり、そのような場合、着信端末２０ｂのユーザは呼接続を切断する（Ｓ０７）等の措置を採ることができる。また、着信端末２０ｂあるいは声紋認識システム１０に、上記のように声紋が一致しなかった場合は、自動的に呼接続を切断し、終話させる機能を備えさせてもよい。   On the other hand, if the voiceprint of the voice data acquired by the voice acquisition unit 13 does not match any of the voiceprints of the voiceprint data included in the voiceprint registration database 11, information to that effect is transmitted. In this case, for example, it is preferable that the display device of the receiving terminal 20b is displayed as not applicable as shown in FIG. If the caller does not match the registered voiceprint and the caller is pretending to be a registered voiceprint, the caller may be trying to fraud. The user of the receiving terminal 20b can take measures such as disconnecting the call connection (S07). Further, if the voiceprint does not match as described above, the incoming terminal 20b or the voiceprint recognition system 10 may be provided with a function of automatically disconnecting the call and terminating the call.

上記のように本実施形態によれば、電話の通話による詐欺等を効率的に防止することができる。   As described above, according to the present embodiment, fraud or the like due to a telephone call can be efficiently prevented.

また、本実施形態のように、着信端末２０ｂからの要求とトリガとして音声データを取得することとすれば、着信端末２０ｂのユーザが通話相手の確認を行いたい場合等のみに処理が行われ、声紋認識システム１０の負荷を軽減すること等ができる。また、本実施形態にように呼接続の経路に含まれる交換機３１を特定し、その交換機３１から音声データを取得することとすれば、通話の経路には交換機３１が含まれるため、音声データを確実に取得することができる。また、照合結果に関する情報を着信端末２０ｂに送信することとすれば、着信端末２０ｂのユーザは、照合の結果に基づいた対処をすることができる。   Further, as in this embodiment, if voice data is acquired as a request and trigger from the receiving terminal 20b, the process is performed only when the user of the receiving terminal 20b wants to check the other party, The load on the voiceprint recognition system 10 can be reduced. Further, if the exchange 31 included in the call connection route is specified and the voice data is acquired from the exchange 31 as in the present embodiment, the voice data is obtained because the exchange 31 is included in the call route. It can be acquired with certainty. In addition, if information on the matching result is transmitted to the receiving terminal 20b, the user of the receiving terminal 20b can take measures based on the matching result.

なお、本実施形態において、電話機は携帯電話機、電話網は移動体通信網として説明したが、固定電話機及び固定電話の通信網が用いられても、あるいは含まれていてもよい。   In the present embodiment, the telephone is described as a mobile phone and the telephone network is described as a mobile communication network. However, a fixed telephone and a fixed telephone communication network may be used or included.

また、声紋データは上記の処理においては、予め声紋登録データベース１１に記憶されているものとするが、声紋認識システム１０に声紋データ登録部１７（図示せず）を備え、以下の処理を行うことにより上記の声紋認識処理の前に登録されることとしてもよい。その処理を図５のシーケンス図を用いて説明する。   In addition, the voiceprint data is assumed to be stored in advance in the voiceprint registration database 11 in the above processing, but the voiceprint recognition system 10 includes the voiceprint data registration unit 17 (not shown) and performs the following processing. Thus, it may be registered before the voiceprint recognition process. The process will be described with reference to the sequence diagram of FIG.

まず、声紋データ登録の対象となる携帯電話機２０（上述した処理における着信端末２０ｂ）が、声紋データの登録要求を声紋認識システム１０に送信する（Ｓ１１）。この送信は、例えば、声紋認識システム１０にＷｅｂアクセスし、ユーザ認証のため電話番号とパスワードとを入力し、画面上に表示される「データ登録開始」というボタン等を押下すること等により行われることが好ましい。当該送信がなされると、声紋認識システム１０では、声紋データ登録部１７が当該要求を受信する。   First, the cellular phone 20 to be registered for voiceprint data (the receiving terminal 20b in the above-described process) transmits a voiceprint data registration request to the voiceprint recognition system 10 (S11). This transmission is performed, for example, by accessing the voiceprint recognition system 10 via the Web, inputting a telephone number and password for user authentication, and pressing a “data registration start” button or the like displayed on the screen. It is preferable. When the transmission is performed, in the voiceprint recognition system 10, the voiceprint data registration unit 17 receives the request.

続いて、携帯電話機２０ｂはユーザの操作により、声紋データを登録したい相手が使用している携帯電話機２０ｃに発呼し、呼接続を確立する（Ｓ１２）。呼接続が確立されると、声紋認識システム１０では、声紋データ登録部１７が、上述した処理で取得された方法と同様に、携帯電話機２０ｃから携帯電話機２０ｂに送信される音声データを取得する（Ｓ１３）。続いて声紋データ登録部１７が、取得した音声データを声紋登録データベース１１に携帯電話機２０ｂに対応する声紋データとして登録する（Ｓ１４）。その後、携帯電話機２０ｂから送信される名称等を併せて登録することとすれば、図２に示したデータが登録されることとなる。   Subsequently, the cellular phone 20b makes a call to the cellular phone 20c used by the other party to register voiceprint data by the user's operation, and establishes a call connection (S12). When the call connection is established, in the voiceprint recognition system 10, the voiceprint data registration unit 17 acquires voice data transmitted from the mobile phone 20c to the mobile phone 20b in the same manner as the method acquired in the above-described process ( S13). Subsequently, the voiceprint data registration unit 17 registers the acquired voice data in the voiceprint registration database 11 as voiceprint data corresponding to the mobile phone 20b (S14). Thereafter, if the name and the like transmitted from the mobile phone 20b are registered together, the data shown in FIG. 2 is registered.

この構成によれば、効率的に声紋登録データベース１１に声紋データを予め記憶させることができる。   According to this configuration, voiceprint data can be efficiently stored in advance in the voiceprint registration database 11.

本発明の実施形態における声紋認識システムの構成、及び声紋認識システムの接続対象である移動体通信システムの構成を示した図である。It is the figure which showed the structure of the voice communication system in embodiment of this invention, and the structure of the mobile communication system which is the connection object of a voice print recognition system. 実施形態における声紋登録データベースの内容を示した図である。It is the figure which showed the content of the voiceprint registration database in embodiment. 実施形態において声紋認識時に実行される処理を示すシーケンス図である。It is a sequence diagram which shows the process performed at the time of voiceprint recognition in embodiment. 実施形態の処理において着信端末の表示装置に表示される内容の例を示した図である。It is the figure which showed the example of the content displayed on the display apparatus of a receiving terminal in the process of embodiment. 実施形態において声紋登録データベースの声紋データ登録時に実行される処理を示すシーケンス図である。It is a sequence diagram which shows the process performed at the time of voiceprint data registration of a voiceprint registration database in embodiment.

符号の説明Explanation of symbols

１０…声紋認識システム、１１…声紋登録データベース、１２…経路検出部、１３…音声取得部、１４…声紋照合部、１５…要求受信部、
１６…結果送信部、１７…声紋データ登録部、２０…携帯電話機（２０ａ…発信端末、２０ｂ…着信端末）、３０…移動体通信網、３１…交換機、３２…ＢＴＳ。 DESCRIPTION OF SYMBOLS 10 ... Voiceprint recognition system, 11 ... Voiceprint registration database, 12 ... Path | route detection part, 13 ... Voice acquisition part, 14 ... Voiceprint collation part, 15 ... Request reception part,
16 ... Result transmitting unit, 17 ... Voiceprint data registering unit, 20 ... Mobile phone (20a ... outgoing terminal, 20b ... incoming terminal), 30 ... mobile communication network, 31 ... exchange, 32 ... BTS.

Claims (5)

電話機に対応させて声紋データを記憶した声紋登録データベースと、
第１の電話機からの発呼により確立された、当該第１の電話機と第２の電話機との間の呼接続の電話網における経路を検出する経路検出手段と、
前記第１の電話機から前記第２の電話機に送信される音声データを、前記経路検出手段により検出された経路から取得する音声取得手段と、
前記声紋登録データベースに記憶された、前記第２の電話機に対応した声紋データを参照して、当該声紋データの声紋と前記音声取得手段により取得された音声データの声紋との照合を行う声紋照合手段と、
を備える声紋認識システム。 Voiceprint registration database that stores voiceprint data corresponding to the telephone,
Path detecting means for detecting a path in the telephone network of call connection between the first telephone set and the second telephone set established by a call from the first telephone set;
Voice acquisition means for acquiring voice data transmitted from the first telephone to the second telephone from the path detected by the path detection means;
Voiceprint collation means for collating the voiceprint of the voiceprint data with the voiceprint of the voice data acquired by the voice acquisition means with reference to the voiceprint data corresponding to the second telephone stored in the voiceprint registration database When,
Voiceprint recognition system. 前記第２の電話機から送信される、音声データの取得要求の情報を受信する要求受信手段を更に備え、
前記音声取得手段は、前記要求受信手段による、取得要求の情報の受信に応じて前記音声データを取得する、
ことを特徴とする請求項１に記載の声紋認識システム。 Request receiving means for receiving voice data acquisition request information transmitted from the second telephone;
The voice acquisition means acquires the voice data in response to reception of information of an acquisition request by the request reception means;
The voiceprint recognition system according to claim 1. 前記経路検出手段は、前記経路に含まれる交換機を特定し、
前記音声取得手段は、前記経路検出手段により特定された交換機から前記音声データを取得する、
ことを特徴とする請求項１又は２に記載の声紋認識システム。 The route detection means identifies an exchange included in the route,
The voice acquisition means acquires the voice data from the exchange identified by the route detection means;
The voiceprint recognition system according to claim 1 or 2, 前記声紋照合手段による照合の結果に関する情報を前記第２の電話機に送信する結果送信手段を更に備える請求項１〜３の何れか一項に記載の声紋認識システム。   The voiceprint recognition system according to any one of claims 1 to 3, further comprising a result transmission unit that transmits information on a result of collation by the voiceprint collation unit to the second telephone. 前記第２の電話機から発呼により確立された、当該第２の電話機と別の電話機との間の呼接続において、当該別の電話機から当該第２の電話機に送信される音声データを取得し、当該音声データを前記声紋登録データベースに当該第２の電話機に対応する声紋データとして登録する声紋データ登録手段を更に備える請求項１〜４の何れか一項に記載の声紋認識システム。   Obtaining voice data transmitted from the second telephone to the second telephone in a call connection established between the second telephone and the second telephone, established by a call from the second telephone; The voiceprint recognition system according to any one of claims 1 to 4, further comprising voiceprint data registration means for registering the voice data in the voiceprint registration database as voiceprint data corresponding to the second telephone.
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