CN101491111B - 电声学换能 - Google Patents
电声学换能 Download PDFInfo
- Publication number
- CN101491111B CN101491111B CN200780027532.2A CN200780027532A CN101491111B CN 101491111 B CN101491111 B CN 101491111B CN 200780027532 A CN200780027532 A CN 200780027532A CN 101491111 B CN101491111 B CN 101491111B
- Authority
- CN
- China
- Prior art keywords
- driver
- input
- electroacoustical
- signal
- drivers
- 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.)
- Expired - Fee Related
Links
- 230000002463 transducing effect Effects 0.000 title description 7
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000004044 response Effects 0.000 claims description 7
- 238000004137 mechanical activation Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only using transducers reproducing the same frequency band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2873—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- General Health & Medical Sciences (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
一种电声学装置,至少包括第一和第二声耦合的电声学驱动器。电子网络耦合它们的输入,从而应用于一个输入的电子驱动信号降低了从一个输入到另一输入的声耦合效应。
Description
技术领域
本发明一般地涉及电声学换能,并且更具体地涉及用于利用多个声耦合的电声学换能器进行电声学换能的新颖装置和技术。
背景技术
针对背景技术,参考美国专利No.4,146,745和No.4,146,744。
发明内容
根据本发明,至少存在分别具有第一和第二输入的第一和第二声耦合电声学驱动器,其中第一和第二输入分别用于接收第一和第二电子驱动信号。电子网络将第一和第二输入互耦合起来,并且被构造和配置为:当第一电子驱动信号被应用于第一输入的时候,在所述第二输入上提供与所述第一输入上的第一电子驱动信号相位相反的第一相反信号,从而降低从第一电声学驱动器到第二电声学驱动器的声耦合效应。可以存在环绕第一和第二电声学驱动器的公共腔围壳。第一和第二电声学驱动器可以是相同的设计或不同的设计。电子网络可以被构造和配置为:当第二电子驱动器信号被应用于第二输入的时候,在所述第一输入上提供与第二输入上的第二电子驱动信号相位相反的第二相反信号,从而降低从第二电声学驱动器到第一电声学驱动器的声耦合效应。
当结合附图阅读时,其他特征、目的和优点将从以下详细描述中变得明显,附图中:
附图说明
图1是本发明的示例性实施方式的组合示意框图;
图2是图1所示的实施方式的修改的组合示意框图;
图3是利用以及不利用H_22滤波器的振幅(excursion)转移函数X_21的图示;
图4是净振幅衰减的图示;
图5是商用Bose Companion 5卫星扬声器的透视图;以及
图6是具有滤波器16和16’以及求和电路17和17’的实施方式的框图。
具体实施方式
现在参考附图,尤其是参考图1,其示出了本发明实施方式的组合示意框图。电声学换能器111和电声学换能器212安置在围壳13中并且分别具有第一和第二输入14和15,其分别用于接收第一和第二电子驱动信号V1和V2。具有转移特征H22的第一滤波器16将输入14耦合至求和电路17的-输入,该求和电路的+输入接收第二输入信号Vii并且提供电子驱动信号V2作为输出。
已经描述了本实施方式的物理配置,将描述操作模式。为方便起见,将响应于电子驱动信号V1的、由来自于换能器1的锥体移动的声耦合引起的换能器2的锥体的机械振幅描述成每单位V1为X21,并且将响应于电子驱动信号V2的其机械振幅描述成每单位V2为X22。在没有电路16和17时,响应于输入信号V1和Vii的换能器2的锥体的合成振幅X2为:
X2=V1*X21+V2*X22(1)
=Vi*X21+Vii*X22(1a)
为了方便,基于前两个转移函数定义滤波器为:
H22=X21/X22(2)
来自于具有转移特征H22的滤波器16的输出信号对应于输入信号Vi乘以转移特征H22。通过求和电路17应用反相输出信号创建了应用于换能器2的电子驱动信号V2的分量,其消除了由来自于围壳13中的换能器1的声耦合所引起的换能器2的共振。
修改的换能器2的振幅X2’表示为:
X2’=X2-Vi*H22*X22(3)
分别针对项X2和H22替换等式(1a)和(2),给出为:
X2’=Vi*X21+Vii*X22-Vi*(X21/X22)*X22(4)
注意等式(4)的第一和第三项消去,剩下:
X2’=Vii*X22(5)
因此,换能器2的锥体对输入Vi的机械响应恒为O。
参考图2,示出了本发明的另一个实施方式,其具有第二滤波器16’,该滤波器16’具有提供传递到求和电路17’的-输入的输出的转移特征H’22,该求和电路17’在+输入上接收输入信号Vi以提供信号V1,该信号V1包括消除响应于信号V2的换能器1的共振的分量。
参考图3,分别示出了利用以及不利用滤波器16的、作为频率函数的振幅转移函数X21的图示。参考图4,示出了利用滤波器的净振幅衰减减去不利用滤波器的振幅的图示。
参考图5,示出了Bose Companion 5卫星腔围壳中的本发明的商业实施方式的透视视图,其示出了密封围壳中的换能器1和2。在本发明的特定实施方式中,换能器1和2是密封腔围壳中的50mm驱动器,该围壳呈51度角并且具有11.1立方英寸的围壳体积。
参考图6,示出了示出滤波器16和16’以及求和电路17和17’组合的实施方式的框图。
在本发明的特定形式中,在所附文本文件中以十六进制代码的ASCII表示加载的德州仪器DA708E001RFP250DSP芯片实现该共振消除。
虽然已经示出了具有两个电声学驱动器的方面,但是本发明的原理可以扩展到更多个驱动器。
本发明具有多个优点。在公共围壳中的多个驱动器中的每个接收不同信号的系统中,显著减小了由于驱动器和其他驱动器之间的声耦合而由多个驱动器中的任意一个产生的声学输出中的失真。其有助于维持换能器线性区域内驱动器锥体的振幅,从而便于以基本电平而没有听觉失真地来重现声音。显而易见的是,本领域的技术人员现在可以在不脱离本发明概念的情况下,做出多个这里公开的特定实施方式的使用和修改,并且可以脱离这里公开的特定实施方式。因而,认为本发明支持这里公开的装置和技术呈现或拥有新颖特征和特征的新颖组合,并且本发明仅由所附权利要求书的精神和范围限制。
Claims (5)
1.一种电声学装置,包括,
腔围壳(13),
至少第一和第二电声学驱动器(1,2),其在所述腔围壳(13)中声耦合,电声学驱动器(1,2)的每个分别具有输入,用于接收相应的电子信号,
电子网络,其将腔围壳(13)的所述输入互耦合起来;
其中当第一电子驱动信号被应用于第一驱动器输入的时候,在第二驱动器输入(15)上提供与所述第一电子驱动信号相位相反的第一相反信号,其基本上消除了第一驱动器在所述腔围壳中的声耦合所引起的第二驱动器的共振;
其中所述第一相反信号对应于第一电声学驱动器(1)的输入信号Vi乘以转移特征H22,所述转移特征定义为滤波器中H22=X21/X22;
其中X21是响应于第一电子驱动信号V1的每单位V1的第二电声学驱动器(2)的锥体的机械振幅;以及X22是响应于第二电子驱动信号V2的每单位V2的第二电声学驱动器(2)的锥体的机械振幅。
2.根据权利要求1所述的电声学装置,其中当第二电子驱动器信号被应用于所述第二驱动器输入(15)的时候,在所述第一驱动器输入(14)上提供与所述第二电子驱动信号相位相反的第二相反信号,其基本上消除了第二驱动器在所述腔围壳中的声耦合所引起的第一驱动器的共振。
3.根据权利要求1或2所述的电声学装置,其中所述第一和第二电声学驱动器是相同的设计。
4.根据权利要求1或2所述的电声学装置,其中所述第一和第二电声学驱动器是不同的设计。
5.根据前述权利要求1或2所述的电声学装置,其中所述腔围壳(13)是密封的。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/499,014 | 2006-08-04 | ||
US11/499,014 US20080031472A1 (en) | 2006-08-04 | 2006-08-04 | Electroacoustical transducing |
PCT/US2007/074336 WO2008019223A1 (en) | 2006-08-04 | 2007-07-25 | Electroacoustical transducing |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101491111A CN101491111A (zh) | 2009-07-22 |
CN101491111B true CN101491111B (zh) | 2014-01-29 |
Family
ID=38740220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200780027532.2A Expired - Fee Related CN101491111B (zh) | 2006-08-04 | 2007-07-25 | 电声学换能 |
Country Status (5)
Country | Link |
---|---|
US (2) | US20080031472A1 (zh) |
EP (1) | EP2047711A1 (zh) |
JP (1) | JP5259591B2 (zh) |
CN (1) | CN101491111B (zh) |
WO (1) | WO2008019223A1 (zh) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070297619A1 (en) * | 2006-06-26 | 2007-12-27 | Bose Corporation*Ewc* | Active noise reduction engine speed determining |
US9100748B2 (en) | 2007-05-04 | 2015-08-04 | Bose Corporation | System and method for directionally radiating sound |
US8483413B2 (en) * | 2007-05-04 | 2013-07-09 | Bose Corporation | System and method for directionally radiating sound |
US20080273724A1 (en) * | 2007-05-04 | 2008-11-06 | Klaus Hartung | System and method for directionally radiating sound |
US9560448B2 (en) * | 2007-05-04 | 2017-01-31 | Bose Corporation | System and method for directionally radiating sound |
US8724827B2 (en) * | 2007-05-04 | 2014-05-13 | Bose Corporation | System and method for directionally radiating sound |
EP2425640B1 (en) * | 2009-05-01 | 2018-08-15 | Bose Corporation | Multi-element electroacoustical transducing |
FR2987256B1 (fr) | 2012-02-24 | 2014-08-08 | Ldr Medical | Dispositif d'ancrage pour implant intervertebral, implant intervertebral et instrumentation d'implantation |
US10382858B1 (en) * | 2018-02-26 | 2019-08-13 | GM Global Technology Operations LLC | System and method for reducing speaker vibration |
CN108471579A (zh) * | 2018-03-22 | 2018-08-31 | 美律电子(深圳)有限公司 | 扬声器装置 |
US10731883B2 (en) * | 2018-08-23 | 2020-08-04 | Qualcomm Incorporated | Air circulation system |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1462372A (en) * | 1921-10-08 | 1923-07-17 | Merrow Machine Co | Edging or border finish |
GB666868A (en) * | 1948-09-03 | 1952-02-20 | Bell Telephone Mfg Company Of | Loudspeaking telephone system |
US2872516A (en) * | 1955-03-25 | 1959-02-03 | James D Hoffman | Speaker assembly |
US4146745A (en) * | 1976-09-02 | 1979-03-27 | Bose Corporation | Loudspeaker enclosure with multiple acoustically isolated drivers and a common port |
US4146744A (en) * | 1976-09-02 | 1979-03-27 | Bose Corporation | Low q multiple in phase high compliance driver ported loudspeaker enclosure |
DE2653454C2 (de) * | 1976-11-25 | 1978-08-24 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Vorrichtung zum elektronischen Erzeugen von Abstrahlerscheinungen eines rotierenden Lautsprechers |
JPS6031310B2 (ja) * | 1977-07-18 | 1985-07-22 | 史良 岡村 | スピ−カ装置 |
JPS6031311B2 (ja) * | 1977-08-24 | 1985-07-22 | 史良 岡村 | スピーカ系 |
US4238746A (en) * | 1978-03-20 | 1980-12-09 | The United States Of America As Represented By The Secretary Of The Navy | Adaptive line enhancer |
CA2060661C (en) * | 1990-04-09 | 1997-11-25 | Max Hobelsberger | Device for improving bass reproduction in loudspeaker systems with closed housing |
US5216721A (en) * | 1991-04-25 | 1993-06-01 | Nelson Industries, Inc. | Multi-channel active acoustic attenuation system |
US5809153A (en) * | 1996-12-04 | 1998-09-15 | Bose Corporation | Electroacoustical transducing |
US6275580B1 (en) * | 1998-07-07 | 2001-08-14 | Tellabs Operations, Inc. | Teleconferencing device having acoustic transducers positioned to improve acoustic echo return loss |
JP2004172700A (ja) * | 2002-11-18 | 2004-06-17 | Onkyo Corp | スピーカシステム |
JP4320662B2 (ja) * | 2003-12-24 | 2009-08-26 | 三菱電機株式会社 | スピーカ特性補償方法及びスピーカ再生システム |
-
2006
- 2006-08-04 US US11/499,014 patent/US20080031472A1/en not_active Abandoned
-
2007
- 2007-07-25 WO PCT/US2007/074336 patent/WO2008019223A1/en active Application Filing
- 2007-07-25 CN CN200780027532.2A patent/CN101491111B/zh not_active Expired - Fee Related
- 2007-07-25 EP EP07799800A patent/EP2047711A1/en not_active Withdrawn
- 2007-07-25 JP JP2009522948A patent/JP5259591B2/ja not_active Expired - Fee Related
-
2013
- 2013-08-19 US US13/970,361 patent/US20140161288A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP2047711A1 (en) | 2009-04-15 |
JP5259591B2 (ja) | 2013-08-07 |
CN101491111A (zh) | 2009-07-22 |
US20140161288A1 (en) | 2014-06-12 |
WO2008019223A1 (en) | 2008-02-14 |
US20080031472A1 (en) | 2008-02-07 |
JP2009545926A (ja) | 2009-12-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101491111B (zh) | 电声学换能 | |
EP1978778B1 (en) | Electronic device and sound reproducing method | |
US20190028807A1 (en) | Surface speaker | |
US7769191B2 (en) | Flat panel audio output apparatus and video/audio output apparatus | |
TW200718050A (en) | Acoustically communicating data signals across an electrical isolation barrier | |
CN107592592A (zh) | 显示面板、移动终端及屏幕发声控制方法 | |
WO2002043437A3 (en) | Wave field synthesys sound reproduction system using a distributed mode panel | |
HK1125733A1 (en) | Acoustic transducer array signal processing | |
WO2003071827A3 (en) | Compact surround-sound system | |
US9288600B2 (en) | Sound generator | |
CN102547519A (zh) | 具有多个用户感觉传感器的手持电子设备与方法 | |
JP6799323B2 (ja) | スピーカ | |
US10986447B2 (en) | Doppler compensation in coaxial and offset speakers | |
EP1955573B1 (en) | Speakerbox | |
CN217088133U (zh) | 一种应用于电子设备的扬声器装置结构 | |
CN115379347A (zh) | 音频输出方法、电子设备及计算机可读存储介质 | |
JP3790528B2 (ja) | スピーカシステム | |
CN108076402A (zh) | 抗噪耳机 | |
CN217546284U (zh) | 双振膜自封闭扬声器及应用该扬声器的音箱 | |
GB201200973D0 (en) | Low frequency acoustic source | |
CN2912178Y (zh) | 一种音箱 | |
CN216930295U (zh) | 一种扬声器装置及应用该扬声器装置的音箱 | |
US20220201376A1 (en) | Electronic device with loudspeaker module | |
KR100679694B1 (ko) | 디지털 스피커 유닛 | |
KR101682232B1 (ko) | 다중 마이크로폰을 이용하여 오디오 신호를 레코딩하기 위한 시스템 및 그 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20160725 |