JP2021010155A - Distortion reduction system of speaker by supersonic wave - Google Patents

Distortion reduction system of speaker by supersonic wave Download PDF

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JP2021010155A
JP2021010155A JP2019133157A JP2019133157A JP2021010155A JP 2021010155 A JP2021010155 A JP 2021010155A JP 2019133157 A JP2019133157 A JP 2019133157A JP 2019133157 A JP2019133157 A JP 2019133157A JP 2021010155 A JP2021010155 A JP 2021010155A
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speaker
distortion reduction
diaphragm
ultrasonic
supersonic wave
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Japanese (ja)
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徹朗 荒木
Tetsuaki Araki
徹朗 荒木
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Abstract

To solve the following problem in which conventionally, a system of applying a high-range signal out of an audible band for distortion reduction through a voice coil cannot sometimes exhibit high performance because of an influence of a speaker itself and a system.SOLUTION: A high-range signal out of an audible band for distortion reduction is applied to a diaphragm of a speaker through a supersonic wave.SELECTED DRAWING: Figure 1

Description

本発明はスピーカーの音質改善を図った歪低減に関するものである。 The present invention relates to distortion reduction for improving the sound quality of a speaker.

従来の可聴帯域外の高域信号を印加する方式は、ボイスコイルに電気信号で印加する方式であったが、スピーカーの特性やスピーカーネットワークの影響等で十分な高域信号の印加が出来ない場合が多く、システムによっては歪低減効果が十分発揮出来ない問題があった。［特許文献１参照］ The conventional method of applying a high frequency signal outside the audible band is a method of applying an electric signal to the voice coil, but when a sufficient high frequency signal cannot be applied due to the characteristics of the speaker or the influence of the speaker network. There was a problem that the distortion reduction effect could not be sufficiently exhibited depending on the system. [Refer to Patent Document 1]

従来の方式では、高域信号を電気信号でボイスコイルに印加して振動板を振動させる方式であるため、アンプやスピーカーネットワークの特性及びスピーカー自体の特性によっては振動板を高域信号で十分振動させられないケースも多く、又印加する既存システムの変更も複雑で、一般ユーザーが簡単に導入出来ない問題があった。 In the conventional method, a high frequency signal is applied to the voice coil as an electric signal to vibrate the diaphragm. Therefore, depending on the characteristics of the amplifier or speaker network and the characteristics of the speaker itself, the diaphragm vibrates sufficiently with the high frequency signal. In many cases, the existing system to be applied was complicated to be changed, and there was a problem that general users could not easily introduce it.

特許第５２６３５４３号Patent No. 5263543

従来の方法ではスピーカー自体の特性、スピーカー駆動回路、デバイディングネットワークの影響などで性能を最大限に発揮するのが容易でない問題があった。又既存システムに導入する場合の問題として、高域信号重畳のための高域信号発生器及びオーディオ信号に重畳する回路を既存システムに追加するためのシステムの変更や、デバイディングネットワークのあるスピーカーシステムの場合には、磁束発生装置をスピーカー前面に取り付けたりネットワークとスピーカー間にトロイダルコアを取り付けるなど一般ユーザーには簡単に導入が出来ない問題があった。 With the conventional method, there is a problem that it is not easy to maximize the performance due to the characteristics of the speaker itself, the speaker drive circuit, the influence of the dividing network, and the like. In addition, as problems when introducing into an existing system, a system change for adding a high-frequency signal generator for superimposing a high-frequency signal and a circuit for superimposing an audio signal to the existing system, and a speaker system with a dividing network In this case, there was a problem that the general user could not easily introduce the system, such as installing a magnetic flux generator on the front of the speaker or installing a toroidal core between the network and the speaker.

本発明はこのような従来の方式が有していた問題を解決するため、超音波でスピーカーの振動板を振動させる方式を採用した事である。振動板を振動させる方法は、振動板の前方又は後方に超音波スピーカーを配置することにより可能なので、設置位置の自由度は大きく，またデバイディングネットワークやスピーカー駆動回路、スピーカー自体の特性の影響も受け難いので、既存のスピーカーシステムの歪低減が一般ユーザーにも簡単に出来るようにしたものである。 In the present invention, in order to solve the problems of such a conventional method, a method of vibrating the diaphragm of the speaker with ultrasonic waves is adopted. Since the method of vibrating the diaphragm is possible by arranging the ultrasonic speaker in front of or behind the diaphragm, the degree of freedom in the installation position is large, and the characteristics of the dividing network, the speaker drive circuit, and the speaker itself also affect it. Since it is difficult to receive, the distortion of the existing speaker system can be easily reduced by general users.

本発明の超音波印加によるスピーカーの歪低減方式は、既存のシステムへの導入が一般ユーザーにも比較的簡単に出来、かつシステムへの制約条件も少ないので、テレビ等高級オーディオシステム以外への導入も可能である。 The speaker distortion reduction method by applying ultrasonic waves of the present invention can be introduced into an existing system relatively easily by a general user, and there are few restrictions on the system. Is also possible.

スピーカーの前方に超音波スピーカーを設置した本発明の実施形態を表す図である。（実施例１） It is a figure which shows the embodiment of this invention which installed the ultrasonic speaker in front of a speaker. (Example 1) スピーカーの後方に超音波スピーカーを設置した本発明の実施形態を表す図である。（実施例２） It is a figure which shows the embodiment of this invention which installed the ultrasonic speaker behind the speaker. (Example 2)

スピーカーの振動板を超音波で振動させるために、超音波が振動板に届く位置に超音波スピーカーを設置し、スピーカーの歪低減に最適な超音波信号を印加出来るようにした。 In order to vibrate the diaphragm of the speaker with ultrasonic waves, an ultrasonic speaker was installed at a position where the ultrasonic waves reach the diaphragm so that the optimum ultrasonic signal can be applied to reduce the distortion of the speaker.

図１は本発明の実施の形態を表す図であり、１〜４は図２と同様である。１はプリメインアンプ、２はスピーカー、３は超音波スピーカー、４は超音波信号発生器、５は信号入力端子である。 FIG. 1 is a diagram showing an embodiment of the present invention, and FIGS. 1 to 4 are the same as those in FIG. 1 is an integrated amplifier, 2 is a speaker, 3 is an ultrasonic speaker, 4 is an ultrasonic signal generator, and 5 is a signal input terminal.

信号入力端子５に入力されたオーディオ信号はプリメインアンプで増幅され、スピーカー１により音響信号に変換される。一方超音波信号発生器の信号は、超音波スピーカーにより超音波でスピーカー２の振動板を振動させ、オーディオ信号で振動する振動板上でオーディオ信号に重畳される。 The audio signal input to the signal input terminal 5 is amplified by the integrated amplifier and converted into an audio signal by the speaker 1. On the other hand, the signal of the ultrasonic signal generator is superposed on the audio signal on the diaphragm which vibrates the diaphragm of the speaker 2 by ultrasonic waves by the ultrasonic speaker and vibrates by the audio signal.

１ プリメインアンプ
２ スピーカー
３ 超音波スピーカー
４ 超音波信号発生器
５ 信号入力端子1 Integrated amplifier 2 Speaker 3 Ultrasonic speaker 4 Ultrasonic signal generator 5 Signal input terminal

Claims (1)

ダイナミックスピーカーの歪を低減するために、オーディオ信号に重畳する可聴帯域外の高域信号を、超音波でスピーカーの振動板に印加するようにしたスピーカーの歪低減方式。 A speaker distortion reduction method in which a high-frequency signal outside the audible band superimposed on an audio signal is applied to the diaphragm of the speaker by ultrasonic waves in order to reduce the distortion of the dynamic speaker.
JP2019133157A 2019-07-01 2019-07-01 Distortion reduction system of speaker by supersonic wave Pending JP2021010155A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117560607A (en) * 2023-12-29 2024-02-13 汉得利（常州）电子股份有限公司 Ultrasonic loudspeaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008099679A1 (en) * 2007-02-01 2008-08-21 Tetsurou Araki Electro-acoustic converter distortion reduction method
JP2011082938A (en) * 2009-10-05 2011-04-21 Tetsuaki Araki Distortion reduction system of dynamic speaker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008099679A1 (en) * 2007-02-01 2008-08-21 Tetsurou Araki Electro-acoustic converter distortion reduction method
JP2011082938A (en) * 2009-10-05 2011-04-21 Tetsuaki Araki Distortion reduction system of dynamic speaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117560607A (en) * 2023-12-29 2024-02-13 汉得利（常州）电子股份有限公司 Ultrasonic loudspeaker
CN117560607B (en) * 2023-12-29 2024-04-05 汉得利（常州）电子股份有限公司 Ultrasonic loudspeaker

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