JPH07303135A - Ear receiver, transmitter and noise control headset in combination of them - Google Patents
Ear receiver, transmitter and noise control headset in combination of themInfo
- Publication number
- JPH07303135A JPH07303135A JP6095124A JP9512494A JPH07303135A JP H07303135 A JPH07303135 A JP H07303135A JP 6095124 A JP6095124 A JP 6095124A JP 9512494 A JP9512494 A JP 9512494A JP H07303135 A JPH07303135 A JP H07303135A
- Authority
- JP
- Japan
- Prior art keywords
- noise
- microphone
- user
- transmitter
- ear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、周囲の騒音を利用者
の耳元で低減することができる受話装置と、送話信号に
混入する騒音を低減することができる送話装置を実現
し、これ等受話装置と送話装置とにより交通量の多い路
上等の高騒音環境下に於いても高品質な双方向通話を可
能とする騒音制御ヘッドセットを提供しようとするもで
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention realizes a receiving device capable of reducing ambient noise at the user's ear and a transmitting device capable of reducing noise mixed in a transmitting signal. Another object of the present invention is to provide a noise control headset that enables high-quality two-way communication even in a high-noise environment such as on a road with a lot of traffic by using the equal receiver and transmitter.
【０００２】[0002]
【従来の技術】利用者の耳元で周囲騒音を低減する技術
には、独ゼンハイザー社やＡＮＶＴ社の採用したフィー
ドバック型技術が知られている。図３にそのフィードバ
ック型の騒音低減ヘッドセットの一例を示す。利用者の
両耳にはそれぞれにスピーカ１Ａ，１Ｂが配置され、こ
れら２個のスピーカ１Ａ，１Ｂに受話信号が与えられ
る。利用者の口元には送話マイクロホン２が配置され、
利用者の声が受音されて送話信号として発信される。2. Description of the Related Art As a technique for reducing ambient noise around the user's ears, a feedback type technique adopted by German company Sennheiser or ANVT is known. FIG. 3 shows an example of the feedback type noise reduction headset. Speakers 1A and 1B are arranged on both ears of the user, and a reception signal is given to these two speakers 1A and 1B. The microphone 2 is placed at the user's mouth,
The voice of the user is received and transmitted as a transmission signal.
【０００３】利用者の耳元にはスピーカ１Ａ及び１Ｂか
ら放音される受話音と、利用者の耳元に混入する騒音Ｙ
１（ｎ），Ｙ２（ｎ）の双方を受音するためにマイクロ
ホン３Ａ，３Ｂが設けられる。このマイクロホン３Ａと
３Ｂの出力信号は制御手段４Ａ及び４Ｂを通じて加算手
段５Ａ，５Ｂに入力され、受話信号に加算される。制御
手段４Ａ及び４Ｂはマイクロホン３Ａ，３Ｂで受音した
騒音成分だけを取出す制御を行なう。つまり音声帯域の
中の例えば低域側を騒音域と定め、騒音域と定めた帯域
の信号を騒音成分として取出し、この騒音成分の信号を
極性反転する等してスピーカ１Ａ，１Ｂに与える。結局
スピーカ１Ａ，１Ｂから放音される騒音成分と周囲から
利用者の耳元に侵入する騒音とを逆相化して相殺させ、
騒音の低減を行なっている。At the user's ear, the received sound emitted from the speakers 1A and 1B and the noise Y mixed in at the user's ear
Microphones 3A and 3B are provided to receive both 1 (n) and Y2 (n). The output signals of the microphones 3A and 3B are input to the addition means 5A and 5B through the control means 4A and 4B and added to the reception signal. The control means 4A and 4B perform control to extract only the noise component received by the microphones 3A and 3B. That is, for example, the low frequency side of the voice band is defined as a noise range, the signal of the band defined as the noise range is taken out as a noise component, and the signal of this noise component is inverted in polarity and given to the speakers 1A, 1B. Eventually, the noise components emitted from the speakers 1A and 1B and the noise invading the user's ears from the surroundings are reversed in phase to cancel each other.
Noise is being reduced.
【０００４】[0004]
【発明が解決しようとする課題】従来のフィードバック
型の騒音低減ヘッドセットは音声帯域の一部を騒音帯域
に割当てるため、音声帯域が狭くなり音質が低下する欠
点がある。また騒音帯域からはみ出す周波数の騒音に関
しては低減作用を持たない不都合もある。更にスピーカ
１Ａ，１Ｂの音を加算手段５Ａ，５Ｂにフィードバック
する回路構造のため、系の安定性が悪く大レベルの騒音
に対して発振を起す等の不都合もある。Since the conventional feedback type noise reduction headset allocates a part of the voice band to the noise band, the voice band is narrowed and the sound quality is deteriorated. In addition, there is also a disadvantage that it does not have a reducing effect on noise of a frequency protruding from the noise band. Further, because of the circuit structure for feeding back the sounds of the speakers 1A and 1B to the adding means 5A and 5B, there is a disadvantage that the system is not stable and oscillation occurs for a large level of noise.
【０００５】この発明はこれらの欠点を一掃し、音質が
よく、然も安定に動作する低騒音型の受話装置と送話装
置及びこれらの双方を組合せた騒音制御ヘッドセットを
提供しようとするものである。The present invention is intended to eliminate these drawbacks, and provide a low noise type receiver and transmitter which have good sound quality and operate stably, and a noise control headset in which both of them are combined. Is.
【０００６】[0006]
【課題を解決するための手段】この発明の請求項１では
周囲の騒音が利用者の耳元に混入することを低減するこ
とができる騒音低減受話装置を提案するものである。こ
の発明による騒音低減受話装置の特徴とする構成は騒音
検出マイクロホンをスピーカの音場から遮蔽して設ける
ことにより周囲の騒音のみを受音し、この騒音成分を制
御手段を通じて受話信号に加算し、利用者の耳元に設置
したスピーカに与える。スピーカからは受話信号と周囲
の騒音成分が放音される。カピーカから放音された騒音
成分は利用者の耳元に直接侵入する騒音成分と逆位相の
関係となるように制御手段で制御され、この制御により
騒音成分はスピーカと利用者の耳元の間の空間において
音波同士で相殺され、低減される。According to a first aspect of the present invention, a noise-reducing earpiece device is proposed which can reduce the ambient noise from being mixed into the user's ears. The characteristic feature of the noise reduction receiving device according to the present invention is that the noise detecting microphone is provided so as to be shielded from the sound field of the speaker to receive only ambient noise, and this noise component is added to the receiving signal through the control means. It is given to the speaker installed near the user's ear. From the speaker, the received signal and surrounding noise components are emitted. The noise component emitted from the capeca is controlled by the control means so that it has an antiphase relationship with the noise component that directly enters the user's ear, and by this control, the noise component is the space between the speaker and the user's ear. The sound waves cancel each other out and are reduced.
【０００７】利用者の耳元に騒音低減観測マイクロホン
を設ける。この騒音低減観測マイクロホンで検出した信
号を制御手段に与え、制御手段の状態を制御する。つま
り制御手段ではスピーカから放音される騒音成分と利用
者の耳元に直接混入する騒音とが相殺するようにスピー
カに与える騒音成分の位相及び振幅を制御する。この制
御のアルゴリズムは騒音低減観測マイクロホンから出力
される信号のパワーが最小となる条件を満たすとき達せ
られる。A noise reduction observation microphone is provided near the user's ear. The signal detected by the noise reduction observation microphone is given to the control means to control the state of the control means. That is, the control means controls the phase and amplitude of the noise component given to the speaker so that the noise component emitted from the speaker and the noise directly mixed into the user's ear cancel each other. This control algorithm can be reached when the power of the signal output from the noise reduction observation microphone is satisfied.
【０００８】一方この発明の請求項２では送話信号に混
入する騒音成分を低減して送出することができる騒音低
減送話装置を提案する。この発明による騒音低減送話装
置の特徴とする構成は請求項１で説明した騒音検出マイ
クロホンで受音した騒音成分を制御手段を通じて送話信
号に加算し、この加算により送話マイクロホンに混入し
た騒音成分を、騒音検出マイクロホンで受音した騒音成
分で相殺して送出する構成とした点である。この構成に
おけるアルゴリズムは送話信号に騒音成分を加算して送
出する送出信号のパワーが最小となる条件を満たすとき
達せられる。On the other hand, the second aspect of the present invention proposes a noise-reducing transmitter device capable of reducing and transmitting a noise component mixed in a transmitter signal. The characteristic feature of the noise reduction transmitter according to the present invention is that the noise component received by the noise detection microphone described in claim 1 is added to the transmission signal through the control means, and the noise mixed in the transmission microphone by this addition. The component is offset by the noise component received by the noise detection microphone and transmitted. The algorithm in this configuration can be achieved when the condition that the power of the transmission signal transmitted by adding the noise component to the transmission signal is minimum is satisfied.
【０００９】この発明の請求項３では請求項１と請求項
２で提案した受話装置と送話装置を備えた騒音制御ヘッ
ドセットを提案するものである。この請求項３で提案す
る騒音制御ヘッドセットの構成によれば、高騒音の環境
下にあっても明瞭な受話及び送話を行なうことができ
る。従って例えば工事現場等に利用してその効果は大で
ある。A third aspect of the present invention proposes a noise control headset equipped with the receiving device and the transmitting device proposed in the first and second aspects. According to the structure of the noise control headset proposed in claim 3, clear reception and transmission can be performed even in a high noise environment. Therefore, the effect is great when used at a construction site, for example.
【００１０】[0010]
【実施例】図１にこの発明の請求項１で提案する受話装
置の実施例を示す。図１において、図３と対応する部分
には同一符号を付して示す。この発明による受話装置は
利用者の耳元に設置したスピーカ１Ａ，１Ｂと、制御手
段４Ａ，４Ｂと、加算手段５Ａ，５Ｂを具備している点
の構成は図３の説明と同じである。この発明による受話
装置は利用者の耳元に配置するマイクロホン３Ａ，３Ｂ
を騒音低減観測マイクロホンとして利用する点と、スピ
ーカ１Ａ，１Ｂの音場から遮蔽した位置に騒音検出マイ
クロホン６Ａ，６Ｂを設けた構成を特徴とするものであ
る。FIG. 1 shows an embodiment of a receiving device proposed in claim 1 of the present invention. In FIG. 1, parts corresponding to those in FIG. 3 are designated by the same reference numerals. The receiver according to the present invention has the same configuration as that of FIG. 3 in that it includes speakers 1A and 1B installed at the user's ears, control means 4A and 4B, and addition means 5A and 5B. The receiver according to the present invention is provided with microphones 3A and 3B arranged near the user's ear.
Is used as a noise reduction observation microphone, and noise detection microphones 6A and 6B are provided at positions shielded from the sound fields of the speakers 1A and 1B.
【００１１】騒音検出マイクロホン６Ａ，６Ｂは周囲の
騒音を受音し、その騒音成分Ｘ１（ｎ），Ｘ２（ｎ）を
制御手段４Ａ，４Ｂを通じて加算手段５Ａ，５Ｂに与え
る。加算手段では送られて来た受話信号ｒ１（ｎ）及び
ｒ２（ｎ）に騒音成分Ｘ１（ｎ），Ｘ２（ｎ）をそれぞ
れ加算する。制御手段４Ａ，４Ｂの伝達関数がＨ１
（ｚ），Ｈ２（ｚ）であるものとすると、スピーカ１Ａ
と１ＢにはＨ１（ｚ）・Ｘ１（ｎ）＋ｒ１（ｎ）とＨ２
（ｚ）・Ｘ２（ｎ）＋ｒ２（ｎ）が与えられる。利用者
がスピーカ１Ａ，１Ｂと騒音低減観測マイクロホン３
Ａ，３Ｂを耳元に装着した状態におけるカピーカ１Ａ，
１Ｂから各騒音低減観測マイクロホン３Ａ，３Ｂに至る
伝達関数がＧ１（ｎ），Ｇ２（ｎ）で、利用者の耳元に
直接混入する騒音をＹ１（ｎ），Ｙ２（ｎ）とすると、
各騒音低減観測マイクロホン３Ａ，３Ｂから出力される
信号のパワーＰ１，Ｐ２は P1=E[ ｜Y1(n)+H1(z)・G1(z)・X1(n)+G1(z)・r1(n) ｜2 ] ・・・（１） P2=E[ ｜Y2(n)+H2(z)・G2(z)・X2(n)+G2(z)・r2(n) ｜2 ] ・・・（２） となる。The noise detection microphones 6A and 6B receive ambient noise, and supply the noise components X1 (n) and X2 (n) to the addition means 5A and 5B through the control means 4A and 4B. The adding means adds noise components X1 (n) and X2 (n) to the received reception signals r1 (n) and r2 (n), respectively. The transfer function of the control means 4A, 4B is H1.
(Z) and H2 (z), the speaker 1A
And 1B have H1 (z) .X1 (n) + r1 (n) and H2
(Z) .X2 (n) + r2 (n) is given. The user has speakers 1A and 1B and a noise reduction observation microphone 3
A and 3B are attached to the ears of the capeka 1A,
When the transfer functions from 1B to the noise reduction observation microphones 3A and 3B are G1 (n) and G2 (n), and the noise directly mixed into the user's ears is Y1 (n) and Y2 (n),
The powers P1 and P2 of the signals output from the noise reduction observation microphones 3A and 3B are P1 = E [| Y1 (n) + H1 (z) ・ G1 (z) ・ X1 (n) + G1 (z) ・ r1 (n) ｜ 2 ] ・ ・ ・ (1) P2 = E [｜ Y2 (n) + H2 (z) ・ G2 (z) ・ X2 (n) + G2 (z) ・ r2 (n) ｜ 2 ] ・・ ・ (2)
【００１２】一般に受話信号ｒ１（ｎ），ｒ２（ｎ）と
騒音成分Ｘ１（ｎ），Ｘ２（ｎ）とは相関が低く、むし
ろ騒音成分Ｘ１（ｎ），Ｘ２（ｎ）と騒音Ｙ１（ｚ），
Ｙ２（ｚ）との相関は極めて高い。この結果、（１）
式，（２）式に示したパワーＰ１とＰ２を最小化するに
はＹ１（ｎ）＝Ｈ１（ｚ）・Ｇ１（ｚ）・Ｘ１（ｎ）及
びＹ２（ｎ）＝Ｈ２（ｚ）・Ｇ２（ｚ）・Ｘ２（ｎ）と
なる条件であり、この条件を満すとき騒音Ｙ１，Ｙ２を
騒音成分Ｈ１（ｚ）・Ｇ１（ｚ）・Ｘ１（ｎ）及びＨ２
（ｚ）・Ｇ２（ｚ）・Ｘ２（ｎ）によって相殺すること
ができる。制御出力４Ａ，４Ｂは例えばＤＳＰと呼ばれ
ているディジタル演算処理装置を用いることができる。
騒音低減観測マイクロホン３Ａ，３Ｂの出力信号は
（１）式及び（２）式で示すパワーＰ１とＰ２を最小化
するための条件信号として制御手段４Ａ，４Ｂに与える
から、スピーカ１Ａ，１Ｂと騒音低減観測マイクロホン
３Ａ，３Ｂを含んで音声信号の閉ループを構成するもの
でない。よって発振等の発生は皆無で安定に動作する受
話装置を構成することができる。Generally, the received signals r1 (n), r2 (n) and the noise components X1 (n), X2 (n) have a low correlation, and rather the noise components X1 (n), X2 (n) and the noise Y1 (z). ),
The correlation with Y2 (z) is extremely high. As a result, (1)
In order to minimize the powers P1 and P2 shown in the equations (2), Y1 (n) = H1 (z) .G1 (z) .X1 (n) and Y2 (n) = H2 (z) .G2 (Z) .X2 (n), and when the conditions are satisfied, noises Y1 and Y2 are noise components H1 (z) .G1 (z) .X1 (n) and H2.
It can be offset by (z) · G2 (z) · X2 (n). For the control outputs 4A and 4B, for example, a digital arithmetic processing device called DSP can be used.
The output signals of the noise reduction observation microphones 3A and 3B are given to the control means 4A and 4B as condition signals for minimizing the powers P1 and P2 shown in the equations (1) and (2). The reduction observation microphones 3A and 3B are not included to form a closed loop of an audio signal. Therefore, it is possible to configure a receiver device that operates stably without any oscillation.
【００１３】図２は図１に示した受話装置の構成に加え
て、騒音低減機能を具備した送話装置を付加した実施例
を示す。この発明による送話装置は利用者の口元に配置
した送話マイクロホン２から出力される送話信号Ｖ
（ｎ）に、騒音検出マイクロホン６Ａ，６Ｂで受音した
騒音成分Ｘ１（ｎ），Ｘ２（ｎ）を制御手段７Ａ，７Ｂ
を通じて加算手段８で加算し、この加算の結果、送話マ
イクロホン２に混入する騒音Ｙ３（ｎ）を除去しようと
するものである。FIG. 2 shows an embodiment in which a transmitter device having a noise reducing function is added to the structure of the receiver device shown in FIG. The transmitter according to the present invention has a transmitter signal V output from a transmitter microphone 2 arranged at the user's mouth.
In (n), the noise components X1 (n), X2 (n) received by the noise detection microphones 6A, 6B are controlled by the control means 7A, 7B.
The addition means 8 is used to add the noise, and as a result of this addition, noise Y3 (n) mixed in the transmission microphone 2 is to be removed.
【００１４】制御手段７Ａ，７Ｂの伝達関数をＷ１
（ｚ），Ｗ２（ｚ）とすると加算手段８から送出される
送話信号のパワーＰ３は、 P3=E[｜V(n)+Y3(n)+W1(z)・ X1(n)+W2(z)・X2(n) ｜2 ] ・・・（３） となる。パワーＰ３が最小になる条件はＹ３（ｎ）＝Ｗ
１（ｚ）・Ｘ１（ｎ）＋Ｗ２（ｚ）・Ｘ２（ｎ）の状態
で満される。制御手段７Ａと７Ｂはこの条件を満す状態
を維持し、加算手段８から送出する送話信号から騒音Ｙ
３（ｎ）を除去する。この結果、通話相手に品質の高い
送話信号を送り届けることができる。The transfer function of the control means 7A, 7B is W1
(Z) and W2 (z), the power P3 of the transmission signal transmitted from the adding means 8 is P3 = E [| V (n) + Y3 (n) + W1 (z) .X1 (n) + W2 (z) · X2 (n) | 2 ] ... (3). The condition that the power P3 becomes the minimum is Y3 (n) = W
1 (z) .X1 (n) + W2 (z) .X2 (n) is filled. The control means 7A and 7B maintain the condition satisfying this condition, and the noise Y is output from the transmission signal sent from the addition means 8.
Remove 3 (n). As a result, it is possible to deliver a high quality transmission signal to the other party.
【００１５】[0015]
【発明の効果】以上説明したように、この発明の受話装
置によれば、受話中に利用者の耳に達する騒音は、騒音
検出マイクロホン６Ａ，６Ｂで受音し、スピーカ１Ａ，
１Ｂから放音される騒音成分Ｘ１（ｎ）及びＸ２（ｎ）
によって相殺することができる。よって周囲の騒音レベ
ルが高い場所でも、通話相手の音声を明瞭に聴き取るこ
とができる。As described above, according to the earpiece device of the present invention, the noise reaching the user's ear during the earpiece is received by the noise detection microphones 6A, 6B, and the speaker 1A,
Noise components X1 (n) and X2 (n) emitted from 1B
Can be offset by. Therefore, even if the surrounding noise level is high, the voice of the other party can be clearly heard.
【００１６】またこの発明の送話装置によれば送話マイ
クロホン２に混入する騒音Ｙ３（ｎ）を騒音検出マイク
ロホン６Ａ，６Ｂで受音した騒音成分Ｘ１（ｎ），Ｘ２
（ｎ）で打消す構成としたから、通話相手に明瞭度の高
い送話信号を届けることができる。従って通話相手も明
瞭度の高い通話内容を聴き取ることができる利点が得ら
れる。According to the transmitter of the present invention, the noise components X1 (n) and X2 obtained by receiving the noise Y3 (n) mixed in the transmitter microphone 2 by the noise detection microphones 6A and 6B.
Since it is configured to cancel in (n), it is possible to deliver a transmission signal with high clarity to the other party. Therefore, there is an advantage that the other party of the call can also listen to the content of the call with high intelligibility.
【００１７】この結果、この発明による受話装置と通話
装置とを組合せることによって明瞭度の高い高品質な双
方向通信が可能な騒音制御ハンドセットを提供すること
ができる。更に、この発明では騒音検出マイクロホン６
Ａ，６Ｂはスピーカ１Ａ，１Ｂの音場から遮蔽したか
ら、スピーカ１Ａ，１Ｂと騒音検出マイクロホン６Ａ，
６Ｂを含む閉ループは構成されない。また騒音低減観測
マイクロホン３Ａ，３Ｂの出力信号は制御手段４Ａ，４
Ｂに条件信号として与えられるから、この系でも閉ルー
プは構成されない。この結果、騒音レベルが大きくても
発振等が発生することがなく安定に動作する。As a result, it is possible to provide a noise control handset capable of high-quality two-way communication with high intelligibility by combining the receiving device and the communication device according to the present invention. Further, in the present invention, the noise detection microphone 6
Since A and 6B are shielded from the sound fields of the speakers 1A and 1B, the speakers 1A and 1B and the noise detection microphone 6A,
A closed loop containing 6B is not constructed. The output signals of the noise reduction observation microphones 3A and 3B are control means 4A and 4A.
Since it is given to B as a condition signal, a closed loop is not formed even in this system. As a result, even if the noise level is high, oscillation does not occur and the operation is stable.
【００１８】またスピーカ１Ａ，１Ｂに与える受話信号
の帯域を騒音帯域に割当る構成を採らないため、音質の
劣化がなく、高音質の通話を行なうことができる。Since the band of the received signal given to the speakers 1A and 1B is not allocated to the noise band, the sound quality is not deteriorated and the high quality sound communication can be performed.
【図１】この発明の請求項１で提案する受話装置の一実
施例を示すブロック図。FIG. 1 is a block diagram showing an embodiment of a receiving device proposed in claim 1 of the present invention.
【図２】この発明の請求項１で提案した受話装置に請求
項２で提案する送話装置を組合せ、請求項３で提案する
騒音制御ヘッドセットを構成した例を示すブロック図。FIG. 2 is a block diagram showing an example in which the noise control headset proposed in claim 3 is configured by combining the receiver device proposed in claim 1 of the present invention with the transmitter device proposed in claim 2.
【図３】従来の技術を説明するためのブロック図。FIG. 3 is a block diagram for explaining a conventional technique.
１Ａ，１Ｂ スピーカ ２ 送話マイクロホン ３Ａ，３Ｂ 騒音低減観測マイクロホン ４Ａ，４Ｂ 制御手段 ５Ａ，５Ｂ 加算手段 ６Ａ，６Ｂ 騒音検出マイクロホン ７Ａ，７Ｂ 制御手段 ８ 加算手段 1A, 1B Speaker 2 Microphone 3A, 3B Noise reduction observation microphone 4A, 4B Control means 5A, 5B Addition means 6A, 6B Noise detection microphone 7A, 7B Control means 8 Addition means
Claims (3)
ピーカと、 Ｂ．送話信号を利用者の口元で受音する送話マイクロホ
ンと、 Ｃ．利用者の耳元における上記スピーカの音と、利用者
の耳元に混入する周囲の騒音を受音する騒音低減観測マ
イクロホンと、 Ｄ．上記スピーカの音場から遮蔽され周囲の騒音のみを
受音する騒音検出マイクロホンと、 Ｅ．この騒音検出マイクロホンで受音した騒音成分を上
記受話信号に加算する加算手段と、 Ｆ．上記加算手段に与える騒音成分の電気的特性を制御
し、利用者の耳元に混入する騒音を上記スピーカから放
音する騒音成分によって相殺させる制御を行なう制御手
段と、によって構成したことを特徴とする受話装置。1. A. A speaker for giving a received signal to a user's ear, and B. A transmission microphone that receives a transmission signal at the user's mouth; A noise reduction observation microphone for receiving the sound of the speaker at the user's ear and the ambient noise mixed in at the user's ear; and D. A noise detection microphone which is shielded from the sound field of the speaker and receives only ambient noise; An addition unit for adding the noise component received by the noise detection microphone to the received signal, and F. Control means for controlling the electrical characteristics of the noise component given to the adding means and for canceling the noise mixed in the user's ears by the noise component emitted from the speaker. Earpiece.
信する送話マイクロホンと、 Ｂ．周囲の騒音を受音する騒音検出マイクロホンと、 Ｃ．この騒音検出マイクロホンで受音した騒音成分を上
記送話マイクロホンから発信される送話信号に加算する
加算手段と、 Ｄ．上記加算手段で加算する騒音成分の電気的特性を制
御し、この加算手段に加算する騒音成分によって上記送
話マイクロホンから発信される送話信号に混入した騒音
成分とを相殺する制御を行なう制御手段と、によって構
成したことを特徴とする送話装置。2. A. A transmitting microphone that receives a sound at a user's mouth and transmits a transmitting signal; and B. A noise detection microphone for receiving ambient noise; An addition means for adding the noise component received by the noise detection microphone to the transmission signal transmitted from the transmission microphone; and D. Control means for controlling the electrical characteristics of the noise component added by the adding means and for canceling the noise component mixed in the transmission signal transmitted from the transmission microphone by the noise component added by the adding means. A transmitter device characterized by being constituted by:
の送話装置の双方を組合せて構成したことを特徴とする
騒音制御ヘッドセット。3. A noise control headset comprising a combination of the receiver according to claim 1 and the transmitter according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6095124A JPH07303135A (en) | 1994-05-09 | 1994-05-09 | Ear receiver, transmitter and noise control headset in combination of them |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6095124A JPH07303135A (en) | 1994-05-09 | 1994-05-09 | Ear receiver, transmitter and noise control headset in combination of them |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07303135A true JPH07303135A (en) | 1995-11-14 |
Family
ID=14129086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6095124A Pending JPH07303135A (en) | 1994-05-09 | 1994-05-09 | Ear receiver, transmitter and noise control headset in combination of them |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07303135A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1189480A2 (en) * | 2000-09-14 | 2002-03-20 | König, Florian Meinhard | Headset with earpiece and mouthpiece |
| WO2008014018A1 (en) * | 2006-07-28 | 2008-01-31 | Sony Ericsson Mobile Communications Ab | System and method for noise canceling in a portable mobile communication device coupled with a headset assembly and corresponding computer program product |
| CN102044252A (en) * | 2010-09-23 | 2011-05-04 | 瑞声声学科技(深圳)有限公司 | Device and method for eliminating noise |
| WO2011113341A1 (en) * | 2010-03-18 | 2011-09-22 | 华为终端有限公司 | Audio apparatus capable of noise reduction and mobile telephone capable of noise reduction |
-
1994
- 1994-05-09 JP JP6095124A patent/JPH07303135A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1189480A2 (en) * | 2000-09-14 | 2002-03-20 | König, Florian Meinhard | Headset with earpiece and mouthpiece |
| EP1189480A3 (en) * | 2000-09-14 | 2003-11-05 | König, Florian Meinhard | Headset with earpiece and mouthpiece |
| WO2008014018A1 (en) * | 2006-07-28 | 2008-01-31 | Sony Ericsson Mobile Communications Ab | System and method for noise canceling in a portable mobile communication device coupled with a headset assembly and corresponding computer program product |
| WO2011113341A1 (en) * | 2010-03-18 | 2011-09-22 | 华为终端有限公司 | Audio apparatus capable of noise reduction and mobile telephone capable of noise reduction |
| CN102044252A (en) * | 2010-09-23 | 2011-05-04 | 瑞声声学科技(深圳)有限公司 | Device and method for eliminating noise |
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