JP3678694B2

JP3678694B2 - Interactive terminal device, call control method thereof, and program thereof

Info

Publication number: JP3678694B2
Application number: JP2001337524A
Authority: JP
Inventors: 義治小松
Original assignee: Ｎｅｃビューテクノロジー株式会社
Priority date: 2001-11-02
Filing date: 2001-11-02
Publication date: 2005-08-03
Anticipated expiration: 2021-11-02
Also published as: JP2003143253A

Description

【０００１】
【発明の属する技術分野】
本発明は、骨伝導マイク、骨伝導スピーカを備えた対話型端末装置、およびその通話制御方法、およびそのプログラムに関する。
【０００２】
【従来の技術】
従来から、骨伝導を利用した受話器等は、聴覚障害者や高齢者等に利用されている。骨伝導を利用した端末は、相手方端末から電気信号に変換されて送信されてきた音声を振動に変換する。骨伝導を利用した端末の利用者が当該端末のスピーカ（振動部）を自身の頭蓋骨にあてると、当該頭蓋骨を通じて蝸牛に振動が伝わる。したがって、仮に外耳に障害がある場合でもその患部を通らずに音声を脳に伝達することができる。
【０００３】
【発明が解決しようとする課題】
ところで、近年、携帯電話機が爆発的に普及し、いついかなる状況下においても圏外でない限り通話することが可能となった。したがって、繁華街の喧騒の中でも通話することが可能であるが、従来の携帯電話機等の対話型端末装置は、人込みの中などの周りが騒がしい場合、話者自身が相手方の音声を聞き取りにくいばかりか、それに対抗すべく大音量で発声してしまうため、周りにも迷惑であった。また、通話相手方も騒音が混在した音声を受話することになり、聞き取りにくかった。
【０００４】
本発明は、上記事情に鑑みなされたものであり、周辺騒音に強く、聞き取り易い通話環境を実現する対話型端末装置、その通話制御方法、およびそのプログラムを提供することを目的とする。
【０００５】
また、本発明は、ユーザが通話環境を考慮して骨伝導マイク、骨伝導スピーカを使用するモードと、ノーマルマイク、ノーマルスピーカを使用するモードとを選択可能にしたことにより、使い勝手のよい対話型端末装置、その通話制御方法、およびそのプログラムを提供することを目的とする。
【０００６】
【課題を解決するための手段】
かかる目的を達成するために、請求項１記載の発明は、話者の頭蓋骨から音声振動をピックアップし、送話音声信号に変換する骨伝導マイクと、ネットワークに送話音声信号を送出し、ネットワークから受話音声信号を受信する無線手段と、無線手段により受信した受話音声信号を音声振動に変換し、話者の頭蓋骨に伝導する骨伝導スピーカと、話者の周辺音声を採取するノーマルマイクと、ノーマルマイクにより採取された周辺音声を位相反転する位相反転回路と、位相反転回路により位相反転された周辺音声を騒音中和音声として出力するノーマルスピーカと、を有することを特徴とし、骨伝導マイクから出力される送話音声信号から、骨伝導スピーカにより伝導される受話音声信号を減算する信号減算回路をさらに有し、無線手段は、信号減算回路により減算された送話音声信号を送出することを特徴とし、無線手段により受信した受話音声を話者のスイッチング操作により、骨伝導スピーカに出力するか、ノーマルスピーカに出力するかを切り替える入出力切替手段をさらに有することを特徴としている。
【０００７】
請求項２記載の発明は、請求項１記載の発明において、入出力切替手段は、話者のスイッチング操作により、骨伝導マイクによりピックアップした送話音声信号、およびノーマルマイクにより採取した周辺音声と話者音声とを含む送話音声信号のいずれを、無線手段を介してネットワークに送出するかを切り替えることを特徴としている。
【０００８】
請求項３記載の発明は、骨伝導マイクにより話者の頭蓋骨から音声振動をピックアップし、送話音声信号に変換して、ネットワークに送出する送話工程と、ネットワークから受話音声信号を受信して、音声振動に変換し、音声振動を骨伝導スピーカにより話者の頭蓋骨に伝導する受話工程と、を有する対話型端末装置の通話制御方法であって、ノーマルマイクにより話者の周辺音声を採取する周辺音声採取工程と、周辺音声採取工程により採取された周辺音声を位相反転する位相反転工程と、位相反転工程により位相反転された周辺音声をノーマルスピーカから騒音中和音声として出力する騒音中和音声出力工程と、を有することを特徴とし、骨伝導マイクから出力される送話音声信号から、骨伝導スピーカにより伝導される受話音声信号を減算する信号減算工程をさらに有し、送話工程は、信号減算工程により減算された送話音声信号を送出することを特徴とし、受話工程により受信した受話音声を話者のスイッチング操作により、骨伝導スピーカに出力するか、ノーマルスピーカに出力するかを切り替える入力切替工程をさらに有することを特徴としている。
【０００９】
請求項４記載の発明は、請求項３に記載の発明において、話者のスイッチング操作により、骨伝導マイクによりピックアップした送話音声信号、およびノーマルマイクにより採取した周辺音声と話者音声とを含む送話音声信号のいずれを、送話工程によりネットワークに送出するかを切り替える出力切替工程をさらに有することを特徴としている。
【００１０】
請求項５記載の発明は、骨伝導マイクにより話者の頭蓋骨から音声振動をピックアップし、送話音声信号に変換して、ネットワークに送出する送話処理と、ネットワークから受話音声信号を受信して、音声振動に変換し、音声振動を骨伝導スピーカにより話者の頭蓋骨に伝導する受話処理と、をコンピュータに実行させる対話型端末装置の通話制御プログラムであって、ノーマルマイクにより話者の周辺音声を採取する周辺音声採取処理と、周辺音声採取処理により採取された周辺音声を位相反転する位相反転処理と、位相反転処理により位相反転された周辺音声をノーマルスピーカから騒音中和音声として出力する騒音中和音声出力処理と、をコンピュータに実行させることを特徴とし、骨伝導マイクから出力される送話音声信号から、骨伝導スピーカにより伝導される受話音声信号を減算する信号減算処理をさらにコンピュータに実行させ、送話処理は、信号減算処理により減算された送話音声信号を送出することを特徴とし、受話処理により受信した受話音声を話者のスイッチング操作により、骨伝導スピーカに出力するか、ノーマルスピーカに出力するかを切り替える入力切替処理をさらにコンピュータに実行させることを特徴としている。
【００１１】
請求項６記載の発明は、請求項５記載の発明において、話者のスイッチング操作により、骨伝導マイクによりピックアップした送話音声信号、およびノーマルマイクにより採取した周辺音声と話者音声とを含む送話音声信号のいずれを、送話処理によりネットワークに送出するかを切り替える出力切替処理をさらにコンピュータに実行させることを特徴としている。
【００１８】
【発明の実施の形態】
以下、本発明の実施の形態を添付図面を参照しながら詳細に説明する。
【００１９】
図１は、本発明の実施の形態における対話型端末装置の構成を示すブロック図である。当該対話型端末装置は、骨伝導マイク１０、骨伝導スピーカ２０、信号減算回路３０、位相反転回路４０、入出力切り替え器５０、無線機６０、ノーマルマイク７０、およびノーマルスピーカ８０を備える。
【００２０】
対話型端末装置は、携帯電話機、ＰＨＳ、または通信手段を備えるＰＤＡ等である。また、これら以外にもトランシーバやコンピュータ等の情報入出力端末としてのヘッドパーツや、それらが組み込まれたヘルメット等双方向対応機器にも適用可能である。
【００２１】
骨伝導マイク１０は、話者の頭蓋骨から音声振動をピックアップし、ピックアップした音声振動を電気的な送話音声信号に変換する。そして、当該送話音声信号を信号減算回路３０に出力する。骨伝導スピーカ２０は、入出力切り替え器５０からの受話音声信号を音声振動に変換し、話者の頭蓋骨に当該音声振動を伝達する。同時に、入出力切り替え器５０からの受話音声信号を信号減算回路３０に出力する。骨伝導マイク１０および骨伝導スピーカ２０の筐体上の配置は、頭蓋骨に接触可能な位置であれば、どこでもよい。
【００２２】
信号減算回路３０は、骨伝導マイク１０から入力された送話音声信号から骨伝導スピーカ２０から入力された受話音声信号を減算する。これは、骨伝導スピーカ２０から発せられた音声振動が骨伝導マイク１０に再入力され、当該音声振動と話者の頭蓋骨からの音声振動とが干渉増幅してハウリングを起こすのを防ぐ処理である。信号減算回路３０は、減算処理後の送話音声信号を入出力切り替え器５０に出力する。
【００２３】
ノーマルマイク７０は、従来から一般的に使用されているマイクであり、本発明において、特に周辺音声（雑音）を集音するために機能する。ノーマルマイク７０は、集音した音声信号を位相反転回路４０および入出力切り替え器５０に出力する。
【００２４】
位相反転回路４０は、ノーマルマイク７０から入力された音声信号の位相を反転する。反転した音声信号をノーマルスピーカ８０に出力する。また、図１中に矢印の記載はないが、骨伝導スピーカ２０に反転した音声信号を出力してもよい。その場合、骨伝導スピーカ２０は、当該位相反転回路４０から入力された音声信号と受話音声信号とを合成出力する。
【００２５】
入出力切り替え回路５０は、信号減算回路３０から入力される送話音声信号とノーマルマイク７０から入力される送話音声信号とをユーザの指示により選択的に切り替えて、無線機６０に出力する。また、無線機６０から入力された受話音声信号を骨伝導スピーカ２０に出力するか、ノーマルスピーカ８０に出力するかを切り替え制御する。
【００２６】
無線機６０は、入出力切り替え器５０から入力された送話音声信号を無線電話網を介してアクセスポイントに送信し、無線電話網から受信した受話音声信号を入出力切り替え器５０に出力する。
【００２７】
ノーマルスピーカ８０は、位相反転回路４０から入力された周辺音声を反転した騒音中和音声を出力する。または、入出力切り替え器５０から入力された受話音声信号を出力する。
【００２８】
次に、本発明の実施の形態における対話型端末装置の動作（通話制御方法）について説明する。図２は、本発明の実施の形態における対話型端末装置の動作を説明するためのフローチャートである。
【００２９】
まず、ユーザは、周辺環境を考慮して話者音声のみを相手方に送信するか、周辺音声も含めた音声を相手方に送信するかを選択する（ステップＳ１）。話者音声のみを送信したい場合は骨伝導マイク１０をＯＮする（ステップＳ１／Ｙ）。その場合、入出力切り替え器５０は、骨伝導マイク１０からピックアップした音声のみを選択し、ノーマルマイク７０から集音した音声は無視する。無線機６０は、話者音声のみを送信する（ステップＳ２）。
【００３０】
ユーザが周辺音声も含めた音声を送信した場合は骨伝導マイク１０をＯＦＦする（ステップＳ１／Ｎ）。その場合、入出力切り替え器５０は、ノーマルマイク７０から集音した音声を選択し、無線機６０は、ノーマルマイク７０からの音声信号を送信する（ステップＳ３）。
【００３１】
次に、ユーザは、相手方から受信した音声信号を骨伝導スピーカ２０に出力するか、ノーマルスピーカ８０に出力するかを選択する（ステップＳ４）。骨伝導スピーカ２０に出力させたい場合は、骨伝導スピーカ２０をＯＮする（ステップＳ４／Ｙ）。その場合、入出力切り替え器５０は、受信音声を骨伝導スピーカ２０に出力する（ステップＳ５）。そして、ノーマルマイク７０から集音した周辺音声を位相反転させた音声を騒音中和音声として、ノーマルスピーカ８０から出力する（ステップＳ６）。
【００３２】
ユーザが受信音声をノーマルスピーカ８０に出力させたい場合は、骨伝導スピーカ２０をＯＦＦする（ステップＳ４／Ｎ）。その場合、入出力切り替え器５０は、受信音声をノーマルスピーカ８０に出力する（ステップＳ７）。
【００３３】
次に、本発明の実施の形態における対話型端末装置の動作（通話制御方法）の具体的な実施例を説明する。話者Ａと話者Ｂとの間で対話型通信を行う場合であって、話者Ａを当方として本発明の周辺騒音に強い対話型端末装置を利用しているものと想定して説明する。話者Ｂは、従来の端末装置でも本発明のものでもよい。
【００３４】
話者Ａは、繁華街の雑踏の中からの通話で、話者Ａの周辺は他者の話し声や車の騒音などで騒がしい。ここで、従来の端末装置であれば話者Ａの会話内容と共にそれらの騒音もマイクにより集録されてしまい、話者Ｂにはその内容が伝わりにくい。この点、本発明の端末装置であれば、話者Ａの頭蓋骨部の伝導音声のみを集録して話者Ｂに伝えるため内容がはっきりと伝えられる。
【００３５】
また、従来の端末装置では雑踏の中で相手方の音声が聞き取りにくくなる。この点、本発明の端末装置であれば、骨振動スピーカ２０を利用して話者Ａの頭蓋骨に直に音声を伝達することで聞き取り易くなる。この際、骨振動スピーカ２０以外に従来のノーマルマイク７０とノーマルスピーカ８０を搭載し、周辺音声を集音して位相反転した音声をノーマルスピーカ８０から流すことで、耳から入る雑音を中和すると、更に明瞭な聞き取りができる。
【００３６】
本発明の骨振動マイク１０の利用により周辺音声が伝達できないというデメリットが発生する恐れがある。この解決手段として従来のノーマルマイク７０と骨振動マイク１０の双方を容易に切り替えることを可能とするユーザスイッチング機能を設けた。
【００３７】
なお、本発明の通話制御方法をプログラムを実行することにより実現可能である。当該プログラムは、半導体ＩＣ記録媒体、光記録媒体、磁気記録媒体、または光磁気記録媒体に記録されて提供される。または、プログラムサーバからＦＴＰ（ファイル転送プロトコル）により、装置にダウンロードされて提供される。
【００３８】
なお、上述した実施の形態は、本発明の好適な実施の形態の一例を示すものであり、本発明はそれに限定されることなく、その要旨を逸脱しない範囲内において、種々変形実施が可能である。
【００３９】
【発明の効果】
以上の説明から明らかなように、骨振動マイクおよび骨振動スピーカを有することで周辺騒音を気にせずに音声情報を明瞭に伝達でき、さらに相手からの音声情報も聞き取り易い。
【００４０】
また、ユーザが通話環境を考慮して骨伝導マイク、骨伝導スピーカを使用するモードと、ノーマルマイク、ノーマルスピーカを使用するモードとを選択可能にしたことにより、使い勝手がよい。
【００４１】
また、骨振動スピーカにより頭蓋骨を振動伝達して音声を伝えるため難聴などの障害を持つ場合でも聞き取り易い。
【００４２】
さらに、携帯電話などの対話型端末装置において、耳周辺にスピーカ、口周辺にマイクを配置しないといけないという制限を排除できるため、装置のデザインや形状の自由度が格段に増すという特徴も兼ね備える。
【図面の簡単な説明】
【図１】本発明の実施の形態における対話型端末装置の構成を示すブロック図である。
【図２】本発明の実施の形態における対話型端末装置の動作を説明するためのフローチャートである。
【符号の説明】
１０骨伝導マイク
２０骨伝導スピーカ
３０信号減算回路
４０位相反転回路
５０入出力切り替え器
６０無線機
７０ノーマルマイク
８０ノーマルスピーカ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bone conduction microphone, an interactive terminal device including a bone conduction speaker, a call control method thereof, and a program thereof.
[0002]
[Prior art]
Conventionally, a handset using bone conduction has been used by a hearing impaired person, an elderly person, and the like. A terminal using bone conduction converts the sound transmitted from the counterpart terminal into an electrical signal and converted into vibration. When a user of a terminal using bone conduction applies a speaker (vibration unit) of the terminal to his / her skull, vibration is transmitted to the cochlea through the skull. Therefore, even if the outer ear has a disorder, the voice can be transmitted to the brain without passing through the affected part.
[0003]
[Problems to be solved by the invention]
By the way, in recent years, mobile phones have exploded in popularity, and it has become possible to talk on the phone as long as they are not out of service area under any circumstances. Therefore, it is possible to make a call even in the bustle of busy streets. However, in the case of a conventional interactive terminal device such as a mobile phone, it is difficult for the speaker himself to hear the other party's voice when the surroundings are crowded. Not only that, it was loud enough to compete with it, so it was annoying to others. In addition, it was difficult for the other party to hear the voice mixed with noise.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an interactive terminal device, a call control method thereof, and a program thereof that realize a call environment that is resistant to ambient noise and easy to hear.
[0005]
In addition, the present invention allows the user to select a mode in which a bone conduction microphone and a bone conduction speaker are used in consideration of a call environment, and a mode in which a normal microphone and a normal speaker are used. It is an object to provide a terminal device, a call control method thereof, and a program thereof.
[0006]
[Means for Solving the Problems]
To achieve this object, the invention according to claim 1 picks up voice vibration from the skull of the speaker and converts it into a transmission voice signal, and transmits the transmission voice signal to the network. A wireless means for receiving the received voice signal from the radio, a bone conduction speaker that converts the received voice signal received by the wireless means into a voice vibration and is conducted to the skull of the speaker, and a normal microphone that collects the voice around the speaker, A bone conduction microphone comprising: a phase inversion circuit that inverts the phase of peripheral sound collected by a normal microphone; and a normal speaker that outputs the peripheral sound phase-inverted by the phase inversion circuit as noise neutralized speech Further comprising a signal subtracting circuit for subtracting the received voice signal conducted by the bone conduction speaker from the transmitted voice signal output from the wireless means, The transmission voice signal subtracted by the signal subtraction circuit is transmitted, and the reception voice received by the wireless means is switched to output to the bone conduction speaker or the normal speaker by the switching operation of the speaker. It further has an input / output switching means.
[0007]
According to a second aspect of the present invention, in the first aspect of the present invention, the input / output switching means is configured such that, by the speaker's switching operation, the transmission voice signal picked up by the bone conduction microphone and the surrounding voice and the voice collected by the normal microphone. One of the transmission voice signals including the person voice is switched to be transmitted to the network through the wireless means.
[0008]
According to the third aspect of the present invention, the voice vibration is picked up from the skull of the speaker by the bone conduction microphone, converted into the transmitted voice signal, and sent to the network, and the received voice signal is received from the network. A communication control method for an interactive terminal device that converts voice vibration into voice vibration and conducts voice vibration to the speaker's skull through a bone conduction speaker, and picks up the voice around the speaker with a normal microphone Peripheral voice sampling process, phase inversion process for phase inversion of peripheral voice collected in the peripheral voice sampling process, and noise neutralized voice for outputting the peripheral voice phase-inverted by the phase inversion process as noise neutralized voice from the normal speaker characterized by and an output step, a transmission voice signal output from the bone conduction microphone, a receiving voice signal that is conducted by the bone conduction speaker A signal subtracting step for calculating, and the transmitting step is characterized in that the transmitted voice signal subtracted by the signal subtracting step is transmitted, and the received voice received in the receiving step is converted into a bone by the switching operation of the speaker. It further has an input switching step for switching between output to a conduction speaker and output to a normal speaker.
[0009]
The invention described in claim 4 includes the transmission voice signal picked up by the bone conduction microphone and the surrounding voice and the speaker voice collected by the normal microphone by the switching operation of the speaker in the invention of claim 3. It further has an output switching step for switching which one of the transmission voice signals is transmitted to the network by the transmission step.
[0010]
According to the fifth aspect of the present invention, the voice vibration is picked up from the skull of the speaker by the bone conduction microphone, converted into the transmission voice signal, and transmitted to the network, and the reception voice signal is received from the network. , A conversation control program for an interactive terminal device that causes a computer to perform voice receiving processing for converting voice vibration to a speaker's skull through a bone conduction speaker and transmitting the voice vibration to a speaker's skull. Noise that outputs ambient sound as noise neutralized speech from normal speakers, phase inversion processing for phase inversion of ambient audio collected by ambient audio sampling processing, and phase inversion by phase inversion processing characterized in that to execute a neutralization audio output process, to a computer, from the transmitted voice signal output from the bone conduction microphone, the bone The computer further executes signal subtraction processing for subtracting the reception voice signal conducted by the conductive speaker, and the transmission processing is characterized by transmitting the transmission voice signal subtracted by the signal subtraction processing, and received by the reception processing. It is characterized in that the computer further executes an input switching process for switching whether the received voice is output to the bone conduction speaker or the normal speaker by the switching operation of the speaker.
[0011]
According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the transmission voice signal picked up by the bone conduction microphone and the surrounding voice and the speaker voice collected by the normal microphone by the speaker switching operation are transmitted. It is characterized in that the computer further executes an output switching process for switching which of the voice signals is transmitted to the network by the transmission process.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0019]
FIG. 1 is a block diagram showing a configuration of an interactive terminal device according to an embodiment of the present invention. The interactive terminal device includes a bone conduction microphone 10, a bone conduction speaker 20, a signal subtraction circuit 30, a phase inversion circuit 40, an input / output switch 50, a radio 60, a normal microphone 70, and a normal speaker 80.
[0020]
The interactive terminal device is a mobile phone, a PHS, or a PDA equipped with communication means. In addition to these, the present invention can also be applied to bidirectional parts such as head parts as information input / output terminals such as transceivers and computers, and helmets incorporating them.
[0021]
The bone conduction microphone 10 picks up the voice vibration from the skull of the speaker and converts the picked-up voice vibration into an electric transmission voice signal. Then, the transmission voice signal is output to the signal subtraction circuit 30. The bone conduction speaker 20 converts the received voice signal from the input / output switch 50 into voice vibration and transmits the voice vibration to the skull of the speaker. At the same time, the received voice signal from the input / output switch 50 is output to the signal subtraction circuit 30. The arrangement of the bone conduction microphone 10 and the bone conduction speaker 20 on the housing may be anywhere as long as it can contact the skull.
[0022]
The signal subtraction circuit 30 subtracts the reception voice signal input from the bone conduction speaker 20 from the transmission voice signal input from the bone conduction microphone 10. This is a process for preventing the sound vibration generated from the bone conduction speaker 20 from being re-input to the bone conduction microphone 10 and causing the sound vibration and the sound vibration from the speaker's skull to interfere and amplify howling. . The signal subtraction circuit 30 outputs the transmission voice signal after the subtraction processing to the input / output switch 50.
[0023]
The normal microphone 70 is a microphone that has been generally used in the past, and functions particularly in the present invention to collect ambient sound (noise). The normal microphone 70 outputs the collected audio signal to the phase inversion circuit 40 and the input / output switch 50.
[0024]
The phase inversion circuit 40 inverts the phase of the audio signal input from the normal microphone 70. The inverted audio signal is output to the normal speaker 80. In addition, although an arrow is not shown in FIG. 1, an inverted audio signal may be output to the bone conduction speaker 20. In that case, the bone conduction speaker 20 synthesizes and outputs the audio signal input from the phase inverting circuit 40 and the received audio signal.
[0025]
The input / output switching circuit 50 selectively switches between the transmission voice signal input from the signal subtraction circuit 30 and the transmission voice signal input from the normal microphone 70 according to a user instruction, and outputs the signal to the radio device 60. Further, switching control is performed to switch whether the received voice signal input from the radio device 60 is output to the bone conduction speaker 20 or the normal speaker 80.
[0026]
The radio 60 transmits the transmission voice signal input from the input / output switch 50 to the access point via the radio telephone network, and outputs the received voice signal received from the radio telephone network to the input / output switch 50.
[0027]
The normal speaker 80 outputs a noise neutralized sound obtained by inverting the surrounding sound input from the phase inverting circuit 40. Alternatively, the received voice signal input from the input / output switch 50 is output.
[0028]
Next, the operation (call control method) of the interactive terminal device in the embodiment of the present invention will be described. FIG. 2 is a flowchart for explaining the operation of the interactive terminal device according to the embodiment of the present invention.
[0029]
First, the user selects whether to transmit only the speaker voice to the other party in consideration of the surrounding environment or to transmit the voice including the surrounding voice to the other party (step S1). When it is desired to transmit only the speaker voice, the bone conduction microphone 10 is turned on (step S1 / Y). In that case, the input / output switch 50 selects only the sound picked up from the bone conduction microphone 10 and ignores the sound collected from the normal microphone 70. The radio device 60 transmits only the speaker voice (step S2).
[0030]
When the user transmits sound including peripheral sound, the bone conduction microphone 10 is turned off (step S1 / N). In that case, the input / output switch 50 selects the sound collected from the normal microphone 70, and the radio 60 transmits the sound signal from the normal microphone 70 (step S3).
[0031]
Next, the user selects whether to output the audio signal received from the other party to the bone conduction speaker 20 or the normal speaker 80 (step S4). When it is desired to output to the bone conduction speaker 20, the bone conduction speaker 20 is turned on (step S4 / Y). In that case, the input / output switch 50 outputs the received voice to the bone conduction speaker 20 (step S5). Then, the sound obtained by inverting the phase of the surrounding sound collected from the normal microphone 70 is output from the normal speaker 80 as noise neutralized sound (step S6).
[0032]
When the user wants to output the received voice to the normal speaker 80, the bone conduction speaker 20 is turned off (step S4 / N). In that case, the input / output switch 50 outputs the received voice to the normal speaker 80 (step S7).
[0033]
Next, specific examples of the operation (call control method) of the interactive terminal device according to the embodiment of the present invention will be described. Explanation will be made assuming that interactive communication is performed between the speaker A and the speaker B, and that the speaker A is used as an interactive terminal device resistant to ambient noise according to the present invention. . The speaker B may be a conventional terminal device or the present invention.
[0034]
Talker A is talking from a busy street, and the area around Talker A is noisy due to the voice of others and the noise of the car. Here, in the case of a conventional terminal device, the conversation contents of the speaker A and the noises thereof are also collected by the microphone, and the contents are hardly transmitted to the speaker B. In this respect, since the terminal device of the present invention collects only the conduction voice of the skull part of the speaker A and transmits it to the speaker B, the contents are clearly transmitted.
[0035]
Moreover, in the conventional terminal device, it becomes difficult to hear the other party's voice in a crowd. In this regard, the terminal device of the present invention is easy to hear by transmitting the voice directly to the skull of the speaker A using the bone vibration speaker 20. At this time, in addition to the bone vibration speaker 20, the conventional normal microphone 70 and the normal speaker 80 are mounted, and the noise that enters from the ear is neutralized by collecting the surrounding sound and flowing the phase-inverted sound from the normal speaker 80. , You can hear more clearly.
[0036]
The use of the bone vibration microphone 10 of the present invention may cause a demerit that peripheral sounds cannot be transmitted. As a means for solving this problem, a user switching function is provided which enables easy switching between the conventional normal microphone 70 and the bone vibration microphone 10.
[0037]
The call control method of the present invention can be realized by executing a program. The program is provided by being recorded on a semiconductor IC recording medium, an optical recording medium, a magnetic recording medium, or a magneto-optical recording medium. Alternatively, it is downloaded from the program server to the apparatus by FTP (File Transfer Protocol) and provided.
[0038]
The above-described embodiment shows an example of a preferred embodiment of the present invention, and the present invention is not limited thereto, and various modifications can be made without departing from the scope of the invention. is there.
[0039]
【The invention's effect】
As is clear from the above description, by having the bone vibration microphone and the bone vibration speaker, the voice information can be clearly transmitted without worrying about the surrounding noise, and the voice information from the other party can be easily heard.
[0040]
In addition, the user can select a mode in which the bone conduction microphone and the bone conduction speaker are used and a mode in which the normal microphone and the normal speaker are used in consideration of the call environment.
[0041]
Further, since the bone vibration speaker transmits the sound by vibrating the skull, it is easy to hear even if there is a disorder such as hearing loss.
[0042]
Furthermore, in an interactive terminal device such as a mobile phone, the restriction that a speaker must be placed around the ear and a microphone around the mouth can be eliminated, so that the degree of freedom of design and shape of the device is greatly increased.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an interactive terminal device according to an embodiment of the present invention.
FIG. 2 is a flowchart for explaining the operation of the interactive terminal device in the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Bone conduction microphone 20 Bone conduction speaker 30 Signal subtraction circuit 40 Phase inversion circuit 50 Input / output switching device 60 Radio | wireless machine 70 Normal microphone 80 Normal speaker

Claims

A bone conduction microphone that picks up the voice vibration from the skull of the speaker and converts it into a transmitted voice signal;
Wireless means for transmitting the transmitted voice signal to a network and receiving the received voice signal from the network;
A bone conduction speaker that converts a received voice signal received by the wireless means into voice vibration and conducts to the skull of the speaker;
A normal microphone for collecting the voice around the speaker;
A phase inversion circuit that inverts the phase of ambient audio collected by the normal microphone;
A normal speaker that outputs the ambient voice that has been phase-reversed by the phase inverting circuit as noise neutralized voice;
In an interactive terminal device characterized by comprising :
A signal subtracting circuit for subtracting a received voice signal conducted by the bone conduction speaker from a transmitted voice signal output from the bone conduction microphone;
The wireless means is characterized by transmitting a transmission voice signal subtracted by the signal subtraction circuit,
An interactive terminal further comprising input / output switching means for switching whether the received voice received by the wireless means is output to the bone conduction speaker or the normal speaker by a switching operation of the speaker. apparatus.

The input / output switching means includes any one of a transmission voice signal picked up by the bone conduction microphone and a transmission voice signal including the peripheral voice and the speaker voice collected by the normal microphone by the switching operation of the speaker. the interactive terminal apparatus according to claim 1, wherein via the wireless unit and switches or transmit to the network.

A voice transmission process in which voice vibration is picked up from a skull of a speaker by a bone conduction microphone, converted into a voice signal, and sent to a network;
Receiving a received voice signal from the network, converting the voice vibration into a voice vibration, and conducting the voice vibration to the skull of the speaker through a bone conduction speaker. ,
Surrounding voice sampling step of collecting the surrounding voice of the speaker with a normal microphone;
A phase reversal step for phase reversal of the peripheral sound collected by the peripheral sound collection step;
A noise neutralization voice output step of outputting the ambient voice phase-inverted by the phase inversion step as a noise neutralization voice from a normal speaker;
It characterized by having,
A signal subtracting step of subtracting the received voice signal conducted by the bone conduction speaker from the voice signal outputted from the bone conduction microphone;
The transmission step is characterized by sending the transmission voice signal subtracted by the signal subtraction step,
An interactive terminal device further comprising an input switching step of switching whether the received voice received in the receiving step is output to the bone conduction speaker or the normal speaker by a switching operation of the speaker. Call control method.

Any one of the transmission voice signal picked up by the bone conduction microphone by the switching operation of the speaker and the transmission voice signal including the peripheral voice and the speaker voice sampled by the normal microphone by the transmission step. 4. The call control method for an interactive terminal device according to claim 3 , further comprising an output switching step of switching whether to transmit to the network.

The voice transmission from the skull of the speaker by the bone conduction microphone, picking up the voice vibration, converting it into a voice signal, and sending it to the network,
A communication control program for an interactive terminal device that receives a received voice signal from the network, converts the voice vibration into voice vibration, and conducts the voice vibration to the skull of the speaker through a bone conduction speaker. Because
Peripheral voice sampling processing for sampling the speaker's peripheral voice with a normal microphone;
A phase reversal process for reversing the phase of the peripheral sound collected by the peripheral sound collection process;
Noise neutralization voice output processing for outputting the ambient voice phase-inverted by the phase inversion processing as noise neutralization voice from a normal speaker;
To run on a computer ,
Causing the computer to further perform a signal subtraction process for subtracting the received voice signal conducted by the bone conduction speaker from the transmitted voice signal output from the bone conduction microphone;
The transmission process is characterized by sending a transmission voice signal subtracted by the signal subtraction process,
A dialogue characterized by causing the computer to further execute an input switching process for switching whether the received voice received by the reception process is output to the bone conduction speaker or the normal speaker by a switching operation of the speaker. Control program for type terminal device.

Any of the transmission voice signal picked up by the bone conduction microphone by the switching operation of the speaker and the transmission voice signal including the peripheral voice and the speaker voice collected by the normal microphone are transmitted by the transmission process. 6. The conversation control program for an interactive terminal device according to claim 5 , further causing a computer to execute an output switching process for switching whether to send to the network.