CN1101202A - Asymmeirical tranducing - Google Patents
Asymmeirical tranducing Download PDFInfo
- Publication number
- CN1101202A CN1101202A CN 94104790 CN94104790A CN1101202A CN 1101202 A CN1101202 A CN 1101202A CN 94104790 CN94104790 CN 94104790 CN 94104790 A CN94104790 A CN 94104790A CN 1101202 A CN1101202 A CN 1101202A
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- CN
- China
- Prior art keywords
- input
- electroacoustic transduction
- coupled
- electroacoustic
- asymmetric
- 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.)
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S1/00—Two-channel systems
Abstract
A asymmetrical electroacoustical transducing apparatus of the invention includes a first electroacoustical transducing system having first electroacoustical transducing structure constructed and arranged to transduce spectral components in substantially the full range of audio frequencies. A second electroacoustical transducing system has a second electroacoustical transducing structure constructed and arranged to transduce spectral components only in the upper range of audio frequencies. The first and second electroacoustical transducing structures are relatively displaced and coact to be capable of radiating a composite stereo sound signal when the first electrical transducing structure receives a first electrical signal representative of a first stereo signal and the second electroacoustical transducing structure receives a second electrical signal representative of a second stereo signal.
Description
The present invention relates generally to electroacoustic transduction, relate in particular to novel stereo Electroacooustic power conversion device and technology.
According to the present invention, first and second energy converting systems are arranged.The first electroacoustic transduction system is operated in the whole tone frequency scope basically, and it only is configured and is assembled into carries out electroacoustic transduction to the input electrical signal spectrum component in the high-frequency range of first stereophonic signal.The second electroacoustic transduction system only is configured and is assembled into the spectrum component in the high-frequency range and represents that those the second class spectrum components in first and second stereophonic signals carry out electroacoustic transduction.The first electroacoustic transduction system preferably includes the first electroacoustic transduction structure of also spectrum component in the bass frequency range being carried out transducing, and this bass frequency range is preferably represented both bass spectral component sums of first and second stereophonic signals.First and second stereophonic signals generally are left channel signals and right-channel signals.
According to one aspect of the present invention, the first electroacoustic transduction system is the quite low interior spectrum component of frequency range of radiation only, so this sound source can not be located.
Generally, the first electroacoustic transduction system comprises-adder that it has first input that links to each other with the first stereophonic signal input and second input that is coupled with low pass filter, and the second stereo input is coupled in the input of this low pass filter.First amplifier that the first stereo electroacoustic transduction system generally comprises first equalizer and intercouples with the adder output and the first electroacoustic transduction structure.The first electroacoustic transduction structure generally comprises a woofer and high frequency driver, and this high frequency driver is coupled to high frequency driver to the output of one first amplifier with an electric capacity.Change a kind of method, also can be coupled to amplifier with the driver of gamut.The second electroacoustic transduction system generally comprises second equalizer, second amplifier and high frequency driver.
According to a kind of form of the present invention, first and second casings are arranged.First casing comprises a bass drivers, is installed between first and second sub-chamber, presses the United States Patent (USP) 4 of Bose company, the example of 549, No. 631 patents has opening to external world in first and second sub-chamber, and an oblique angle panel is arranged, be used to install high frequency driver.Second casing is installed the high frequency driver of the second electroacoustic transduction system on an oblique angle panel, and the amplifier and the equalizer of two electroacoustic transduction systems are housed.
According to a concrete form of the present invention, first electroacoustics system comprises the acoustic duct of making according to the principle of the United States Patent (USP) 4,628,528 of Bose company.In a concrete form of the present invention, the first and second electroacoustic transduction systems all are installed in the stereophone receiver casing.
From detailed description many other features, objects and advantages of the present invention will be become obviously below in conjunction with accompanying drawing, wherein:
Fig. 1 arranges block diagram according to system logic of the present invention;
Fig. 2 A is the front view according to stereophonic sound system of the present invention, in this invention, and two casings about having;
Fig. 2 B is the profile along the 2B-2B section of Fig. 2 A; And
Fig. 3 is a perspective view, and part has been made perspective, so that the internal structure of the one embodiment of the present of invention in the stereophone receiver shell to be shown.
Referring now to accompanying drawing,, Fig. 1 especially, Fig. 1 shows the schematic block diagram of a typical embodiment of the present invention.The first electroacoustic transduction system comprises L channel dither 11 and from the woofer 12 of power amplifier 13 received energies, capacitor 14 is coupled to L channel high frequency driver 11 to the output of power amplifier 13.
The second electroacoustic transduction system comprises R channel high frequency driver 15, the energy of its received power amplifier 14.Equalizer 16 is coupled to power amplifier 14 to R channel input 17.Adder 21 and equalizer 22 are coupled to power amplifier 13 to L channel input 23.Low pass filter 24 is coupled to R channel input 17 second input of adder 21, like this, the output of adder 21 has comprised spectrum component in the L channel input signal whole tone frequency scope that is input on the L channel input 23 and the bass spectral component that is input to the R channel input signal on the R channel input terminal 17, thereby, the bass spectral component sum that 12 pairs of woofers are input on L channel input 23 and the R channel input 17 is carried out electroacoustic transduction, and capacitor 14 is input to the interior high frequency spectrum component (generally greater than 200Hz) of left channel signals on the L channel input 23 selectively, carries out transducing by high frequency driver 11.Change a kind of method, the first electroacoustic transduction system can comprise the driver of a gamut, for example, be used in the driver of this type in Bose 901 speaker systems that can buy, it with the equalizer 16 and 22 of transducer 12 and 15 collaborative works, the even basically equal radiant power as frequency function is provided in whole audiorange almost.
Generally, the peak power output ability of amplifier 13 is greater than amplifier 14, because the bigger power of its radiation in wider frequency range usually.Owing to carry out equilibrium with equalizer 16 and 22 on two sound channels, therefore, driver 11 and 15 effective frequency response can be essentially identical, and need not with an electric capacity output of amplifier 14 to be coupled to R channel high frequency driver 15.Woofer 12 can be supported and fixed on the suitable casing, and desired system responses is provided.What a kind of preferred versions of casing was that No. 4,549,631, the United States Patent (USP) of Bose describes is the type of feature with the low-frequency filter characteristics, so the connection between power amplifier 13 and the woofer 12 need not expensive passive no part.
Should be appreciated that principle of the present invention also can realize with passive structures.For example, woofer can comprise double-tone circle driver, and an one voice coil loudspeaker voice coil receives L channel bass spectral component, and another voice coil loudspeaker voice coil receives R channel bass spectral component.Can also only be coupled to one of them input to woofer, so that the bass spectral component of its radiation signal on this input.
Referring to Fig. 2 A, this figure is the left and right casing 33 of a typical embodiment of the present invention and 31 front view.The R channel high frequency driver 15 that right case 31 supports on the oblique angle panel 32.The L channel high frequency driver 11 that left box body 33 supports on the oblique angle panel 34.
Referring to Fig. 2 B, it is the plan view along the 2B-2B section of Fig. 2 A.Right case 31 comprises the high-power equalizer amplifier 36 that is used to encourage the small-power equalizer amplifier 35 of R channel high frequency driver 15 and is used to encourage woofer 12 and L channel high frequency driver 11.Right case 31 is made perforate 37(Fig. 2 A before) and for the STH 41 of air circulation. High frequency driver 11 and 15 lays respectively in similar the casing 11A and 15A.
Woofer 12 is positioned at the multi-cavity type casing, and the multi-cavity type casing has by air vent hole 43 with first chamber 42 of extraneous coupling with by second sub-chamber 44 of air vent hole 45 with extraneous coupling.
Referring to Fig. 3, Fig. 3 shows another embodiment of driver in the stereo reception casing 51, and this figure has partly had an X-rayed internal structure.In this embodiment, first or L channel electroacoustic transduction system be included in the gamut driver 52 of the front portion of acoustic duct 53, acoustic duct 53 extends to the far-end perforate 54 of casing right part along the dotted line that illustrates.Second or R channel electroacoustic transduction system comprise high frequency driver 55.The most handy polyester of sound channel 53A that leads to driver 52 rear portions is filled, and this helps to reduce resonance peak.This embodiment of the present invention has been applied to the stereophone receiver that Bose sound wave company (BOSE ACOUSTIC WAVE) produces, and is promptly available soon after the application's the applying date.This embodiment of the present invention has quoted the United States Patent (USP) 4 of Bose company, 628, the principle that discloses in No. 528 and be called " frequency selective acoustic waveguide damping " with name that the application submits on the same day (applicant and the application are identical, this application is attached to the back as annex A, with for referencial use) principle described in the application.
Other embodiment is included in claims.
Claims (14)
1, asymmetric Electroacooustic power conversion device comprises:
The first electroacoustic transduction system, have be configured and be assembled into be basically to whole tone frequently the spectrum component in the scope carry out the first electroacoustic transduction structure of transducing,
With the second electroacoustic transduction system, have and be configured and be assembled into the second electroacoustic transduction structure of only spectrum component in the high-frequency range in the audio frequency being carried out transducing,
The described first and second electroacoustic transduction structures are oppositely arranged, and receive first signal of telecommunication that expression has first stereophonic signal of the spectrum component in the described high-frequency range in the described first electroacoustic transduction structure, receive expression when having second signal of telecommunication of second stereophonic signal of spectrum component of described high-frequency range with described second electroacoustic transducer, collaborative work can the radiation recombination stereophonic signal.
2,, it is characterized in that institute's art first electroacoustic transduction system further comprises according to the described asymmetric Electroacooustic power conversion device of claim 1:
First input end is coupled to first stereophonic signal of the described first electroacoustic transduction structure in order to reception,
The described second electroacoustic transduction system further comprises:
Second input is coupled to the described second electroacoustic transduction structure.
According to the described asymmetric Electroacooustic power conversion device of claim 2, it is characterized in that 3, the described first electroacoustic transduction system further comprises first equalizer,
The described second electroacoustic transduction system further comprises second equalizer,
Described first and second equalizers are configured and are assembled into and the described first and second electroacoustic transduction structure collaborative works, are the whole tone predetermined radiant power response of scope frequently basically with what be formed on described asymmetric electroacoustic transduction system from the described first and second electroacoustic transduction structures.
According to the described asymmetric Electroacooustic power conversion device of claim 2, it is characterized in that 4, the described first electroacoustic transduction system further comprises:
First power amplifier has an input and and is coupled to the structural output of described first electroacoustic transduction;
Adder, have the input of being coupled to described first power amplifier output, be coupled to described first input end first the input and second the input and
Low pass filter, second input of described second input being coupled to described adder.
According to the described asymmetric Electroacooustic power conversion device of claim 3, it is characterized in that 5, the described first electroacoustic transduction system further comprises:
First power amplifier has an input and an output of being coupled to the described first electroacoustic transduction structure,
Adder, have the input of being coupled to described first power amplifier output, be coupled to described first input end first the input and second the input and
Low pass filter, second input of described second input being coupled to described adder.
6, according to the described asymmetric Electroacooustic power conversion device of claim 1, it is characterized in that the described first electroacoustic transduction structure comprises woofer and high frequency driver structure, the described second electroacoustic transduction structure only comprises the high-frequency drive structure.
According to the described asymmetric Electroacooustic power conversion device of claim 1, it is characterized in that 7, the described first electroacoustic transduction structure comprises the gamut driver, the described second electroacoustic structure only comprises the high frequency driver structure.
According to the described asymmetric electroacoustic transduction structure of claim 6, it is characterized in that 8, the described first electroacoustic structure comprises an acoustic duct.
According to the described asymmetric electroacoustic transduction structure of claim 1, it is characterized in that 9, the described first electroacoustic transducer structure comprises first casing, the described second electroacoustic transduction structure comprises second casing that separates with described first casing.
10, according to the described asymmetric electroacoustic transduction structure of claim 1, it is characterized in that, further comprise one the casing of the described first and second electroacoustic transduction structures is installed.
11, according to the described asymmetric electroacoustic transduction structure of claim 2, it is characterized in that, further comprise;
Adder has the input of being coupled to the described first electroacoustic transduction structure, first input of being coupled to described first input end and second input,
And low pass filter, described second input of described second input being coupled to described adder.
12, according to the described asymmetric Electroacooustic power conversion device of claim 3, it is characterized in that, further comprise:
Adder has the output of being coupled to the described first electroacoustic transduction structure, first input of being coupled to described first input end and second input,
And low pass filter, second input of described second input being coupled to described adder.
13, according to the described asymmetric Electroacooustic power conversion device of claim 2, it is characterized in that, further comprise:
Be coupled to the bass adder of described first input end and described second input, it is configured and is assembled into and makes the described first electroacoustic transduction structure carry out transducing to the bass spectral component sum of the signal on described first and second inputs.
According to the described asymmetric Electroacooustic power conversion device of claim 10, it is characterized in that 14, described casing is a receiver enclosure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5897293A | 1993-05-06 | 1993-05-06 | |
| US058,972 | 1993-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1101202A true CN1101202A (en) | 1995-04-05 |
Family
ID=22020033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94104790 Pending CN1101202A (en) | 1993-05-06 | 1994-05-06 | Asymmeirical tranducing |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0624047A1 (en) |
| JP (1) | JPH07131899A (en) |
| CN (1) | CN1101202A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3266401B2 (en) * | 1993-12-28 | 2002-03-18 | 三菱電機株式会社 | Composite speaker device and driving method thereof |
| DK179663B1 (en) * | 2015-10-27 | 2019-03-13 | Bang & Olufsen A/S | Loudspeaker with controlled sound fields |
| US10880636B2 (en) | 2016-12-16 | 2020-12-29 | Dolby Laboratories Licensing Corporation | Audio speaker with full-range upward firing driver for reflected sound projection |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE31228E (en) * | 1967-12-04 | 1983-05-03 | Bose Corporation | Loudspeaker system |
| US3582553A (en) * | 1967-12-04 | 1971-06-01 | Bose Corp | Loudspeaker system |
| US4243840A (en) * | 1978-12-22 | 1981-01-06 | Teledyne Industries, Inc. | Loudspeaker system |
| JPS5921600Y2 (en) * | 1980-08-22 | 1984-06-26 | オリンパス光学工業株式会社 | sound reproduction device |
| CA1301074C (en) * | 1988-11-21 | 1992-05-19 | Timothy Holl | Video sound |
-
1994
- 1994-05-03 EP EP94303191A patent/EP0624047A1/en not_active Withdrawn
- 1994-05-06 JP JP6094259A patent/JPH07131899A/en active Pending
- 1994-05-06 CN CN 94104790 patent/CN1101202A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0624047A1 (en) | 1994-11-09 |
| JPH07131899A (en) | 1995-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |