Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JPS5552694 Description 1, title of the invention スピーカシステム 3. Detailed Description of the Invention The present invention relates to a speaker system used in a so-called 3D system, which is a system of stereo reproduction. The so-called 3D system in stereo reproduction is a system that perceives a sense of direction and reproduces only the left side and the right side together from the single woofer of K 参 i # I 11100 to 150 Hz. 1aU shows a speaker system that plays the middle to high tones of the left channel, and the same (lb indicates a speaker system that plays the middle to high tones of the right channel. And 2 is a speaker system which reproduces ¦ regenerates the signal which synthesize ¦ combined a 100150 ratio or less inner side channel. In such a 3D system, it is necessary to take out the signal of the sum of left and right channels. Therefore, conventionally, as shown in FIG. 2, the left and right mixing circuits are inserted after the noise amplifier, and the t4 word amplifier dedicated to the low frequency band is used separately. That is, in FIG. 2, the serial f3m output of the left channel and the output of the Noria amplifier 3b of the right channel are introduced into the mixing circuit 4 respectively at 'g · 2EndPage: 1, and after being synthesized there, The speaker system 2 is driven by acquiring a low frequency band signal of ˜159 Hz and amplifying the low frequency band signal with a low frequency band dedicated + power band. Also, in the left channel, the signal of the middle to high range is transmitted from the Glian f3a to the bypass filter 5a, where the signal of the middle to high range is extracted. The mid-to-high range signal is amplified by the power unmixing signal a, and then the speaker system 1a is driven. Similarly, in the right channel, the output of the serial 7'3b is sent to the high / gus filter 5b where the midhigh range signal is picked up. This middle-to-high range signal is amplified by the non-mother Waran f7b and drives the speaker system 1b. The case of FIG. 3 shows the case where a 10-05-2019 1 combining transformer is used in place of the mixing circuit 4 in FIG. 2, and the signal input to the combining transformer 8 is the output of the Gli amplifier 3a as the power amplifier 7a of the left channel. , And to the synthesis transformer 8 through the loop 7b. Then, the output of the synthesizing transformer 8 is taken out through a mouth / 4's filter to take out a low frequency signal, and the speaker system 2 is driven by this low frequency signal. In the middle and high range, both left and right channels receive the output of the woares 7a and 7b, respectively, and through the filters 5a and 5bt, take out the middle and high range, respectively, and the speaker system 1a is used according to this signal. . It is designed to drive 1b. In the case of the conventional 3D system shown in FIG. 2 above, the mixing circuit 4 and another yawg 7C are required, and it becomes expensive. Depending on the configuration of the mixing circuit 4, the middle to high range There is a drawback that the crosstalk between the left and right becomes large. Further, in the conventional 3D system using the synthetic transformer 8 of FIG. 3, in addition to the necessity of the synthetic transformer 8, a low / master Sfiltaro 1 requires a thick f \ 4 LC element, In addition, the performance of the composite transformer 8 has the disadvantage that the bass characteristic is a little worse and the characteristic is deteriorated. The present invention has been made to eliminate the abovementioned conventional drawbacks, and by attaching two woofer units to one case, the left and right sum outputs are extracted acoustically and further By making use of only the sound pressure radiated from the duct mounted on the same casing or from the Dronco /, a sound-like low-pass filter can be configured to cause deterioration of sound quality simply and inexpensively. It is an object of the present invention to provide a speaker system capable of extracting the output of a 3D stem center channel woofer. Hereinafter, an embodiment of a speaker system according to the present invention will be described based on the drawings. FIG. 4 is a cross-sectional view showing the structure of one embodiment. In FIG. 4, 9.10 # i respectively show the woofer units, and these woofer units 9. Each of the panels 10 is attached to the partition plate 13 in the cabinet 11. At the time of this attachment, the edges of the woofer units 9 and 10 are attached to point to the bottom of the cabinet 11). Further, a duct 12 is provided at a lower portion of the front surface of the cabinet 11). FIG. 5 is a block diagram of a 3u system re-ahead system in the case where the speaker system of the present invention configured as described above is applied as a center channel 7-a system in the 31) system. In FIG. 5, the output of the amplifier 15a of the left channel is sent to the speaker system 1a which produces mid-high range through high-t + filter 5a. Similarly, the output of the right channel amplifier 15b is sent to the speaker system 1b that reproduces middle and high tones through the bypass filter 5b. In the speaker system of the present invention for the low tone range shown in FIG. 4 of 14 companies, the output of EndPage: 2 Anne 7 '1158 of the left channel is directly sent to the woofer unit 9 on the left, The '15b output is sent directly to the woofer unit 10 on the right. 10-05-2019 2 In this way, the output of the amplifier 15a of the left channel is extracted from the bypass filter 5aK and the signal of the middle to high frequency range component to drive the speaker system 1a and at the same time the output of the channel 7'15'b of the right channel. The signal of the middle-high range component is extracted by the bypass filter 5b to drive the speaker system 1b. The output of the left channel amplifier 15a is sent to the woofer unit 9, and the output of the right channel a: / 7 '15b is sent to the woofer unit. As a result, audio in the bass region of both left and right channels of 100 to 150 Hz or less is output. At this time, the sound directly radiated from the woofer unit 9.10 is not radiated to the outside of the cabinet 11, and only the resonance noise of the duct 12 and the cabinet 11 is radiated to the outside of the cabinet 11. In this case, there is already a speaker system having only one woofer unit and only the resonant sound of the duct or drone cone and the cabinet being emitted from the cabinet, and the frequency characteristic of the radiated sound is as shown in FIG. It is known that the middle and high range components are cut and only the low range is reproduced. However, in the speaker system according to the present invention, to cause the resonance between the duct 12 and the cabinet 11, the signals of the left and right channels are synthesized by two woofer units 9.10 which are inputted one by one. . The output signal of the left channel amplifier 15a is applied to the left channel woofer unit 9, and the output signal of the right channel amplifier 15b is applied to the right channel woofer unit 10, both of which are fam- ily 9.10 This is a synthetic sound of the radiation emitted from the low frequency band, which is the purpose of the 3D center channel woofer. As described above, according to the speaker system of the present invention, two woofer units are mounted in a cabinet, and the left and right channels of stereo reproduction are separately added to these woofer units, and both woofer units are Since only the resonance noise of the cabinet and the duct or the drone cone is radiated to the outside of the cabinet, the mixing circuit, the low pass filter, the synthesizing transformer and the like become unnecessary as in the prior art. Along with this, it is possible to make it easy and inexpensive, not to mention crosstalk between the middle and high range and other factors that adversely affect the sound quality of the whole range, but rather to create harmonics of the low range. Because it cuts into, it is possible to reproduce extremely high quality bass range. 4. Brief description of the drawings. FIG. 1 is a diagram showing the layout of a general 3D speaker, FIGS. 2 and 3 are block diagrams of the conventional 3D system, and FIG. 4 is a speaker of the present invention. FIG. 5 is a block diagram showing the construction of an embodiment of the system, FIG. 5 is a block diagram of a 3D reproduction system using the speaker system of the present invention, and FIG. 6 is a sound radiated by resonance of a cabinet and a duct or a drone cone. Sound pressure frequency characteristic diagram of FIG. 1a, 1b: speaker system, 5a, 5b: Hyno mother Sfilter, 9.10: woofer unit, 11: cabinets), 12: duct, 13: 9 cut Board, 14 ... speaker system, 15a, 15b ... amplifier. In the figure, the same reference numerals indicate the same or corresponding parts. 0 Agent Kanno Shin-'10EndPage: 3 fan iml 2 2 II 3 3111' If-4115 wEndPage: 4 10-05-2019 3 10-05-2019 4
© Copyright 2021 DropDoc