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(2 "" 0 ")-Patent application (1) August 15, 1972 Secretary General of Patent Office 2 inventor
name Goto Toshieki Goto Toshiyuki (other 2 people) 3 q--Applicant address Osaka Daimon
Kamon Shinto 1006 Name K '+ и (582) Matsushita Electric Industrial Co., Ltd., 1, and Masaharu
Matsushita 4 ? Agent ? Address 516 Osaka Prefecture Kadoma City Ogata Kadoma Address
1006 ? Japan Patent Office Open Patent Gazette 10 JPA 5 O- 40123b U) 555 specification 1,
title of the invention
Speaker device
3. Detailed Description of the Invention The present invention provides a speaker attachment
which can remove only distortion components without reducing the efficiency of the amplifier
and the speaker. Heretofore, there have been the following devices for connecting the amplifier
and the speaker to change the characteristics of the 8th speed. 1, MFB (motional feedback) 2,
comp, server (sound pressure rectification feedback system) However, in the conventional
feedback system speaker device of 1 cycle, time delay in conversion system from electric system
to acoustic system In order to reduce the distortion generated from the speaker can not be
reduced sufficiently, and the range that can be reduced is limited. In addition, the speaker gate
structure was significantly reduced. The invention eliminates the above-mentioned conventional
defects. The present invention is based on the configuration of the base ?8? in FIG. 1 and FIG.
2 in FIG. 1, 14 is an inverting input terminal (-input terminal) and non- 17 is a comparator having
an inverting input terminal (hand input terminal), 17 is an amplifying device having an amplifier
A1 and 2 o speaker, and this speaker 20 has a resistance of 21 ░ EndPage: 122.23 The paper
making station speaker 26 is incorporated into the mid frequency and made resistance with 1,
and the above-mentioned pre and di balance at the mid frequency. At coupling points 26 and 26
a 9'7 pressure is obtained at the output of the detector 29 proportional to the motional
component of the loudspeaker and the electrical and impedance of the loudspeaker. This
characteristic is 21'2! A large amount of motional components of the speaker is detected near fO
(six J ?) as in a, and a large amount of electrical impedance of the speaker is spouted at high
altitude (f> f,). (F-is the above-mentioned resistance yellowtail, the middle frequency which is
balanced with the speaker at the di) Furthermore, this detection M "y is, for example, 32 equal
cabinets, (A2 r !! In the characteristic of Jb, the detection signal is corrected in the reverse
direction, and added to one input terminal of the comparator 38, and the 10th input terminal.
For the child, the input signal is leveled by 2 in 42 and the difference between the two by the
logic calculator 36, ie, the motor of the speaker 20, the distortion of the null component, or the
nonlinearity of the electrical impedance. The distortion due to the polarity is detected and
amplified and applied to the 10 input terminal of the comparator 14. In this case, the detected
distortion line, the motional distortion generated in the speaker 20, and the current impedance of
the electrical impedance are canceled (because C is added. Next, with Mr. Akira Ogura with Fig.
1! I explain to you in a riji way. ??? In FIG. 1, the advantage of comparison 1114 is 1, the gain
of detector 29 is 1, the sagittal variation of comparator 36 is As, and the distortion or mantle of
the system is in the bath-'% 14 To the input, the value is 4C and the cuff IIL is D, and the output
of the knee device 17 and the output of the key device when detected from the bridge are T1.
Now, assuming that the output of the eyelid IIi device 36 is ?X, the output X of the detector 29
is X = TA + ((?x?! ) +-D------------------(1) and ?X is ?xxAs (Kzx-KlX)--------------- --- --- --- (2), so
that from 1.2, X is Xx-AlT (1-A% K2) "/ (1 + A + AgK + T) + DTA1 / (1-+-A1AsKlT) ----- --- --- --- (31,
distortion component D 'becomes D'-rich DA1 / (1 + AlAs KlT) --- --- "---------(4). Fundamental wave
component X K K1, 2 K K1 = 1 / A + T------------------------- K2--1,------------------------------(6) From the
formula 6, X = -A + Tx:------------------------------(7) It becomes. Furthermore, '% As ? ? and I 1 / f.
Remove strain by removing 2 * to 2 / + +-------------------------(1) It is possible to As described above,
according to the speaker apparatus of the present invention, it is possible to eliminate distortion
by reducing the efficiency of the amplifier or the speaker.
4. Brief description of the drawings Fig. 1 shows a block diagram of a speaker device in an
embodiment of the present invention. FIG. 2a is a frequency characteristic diagram of the output
of the detector 29 of the same device, and FIG. 42 is a frequency characteristic diagram of the
equal controller 32 of 1-device. 14 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
и и и и и и и и и Speakers 21.22.23 и и и и и и resistance и 29 и и и
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии =========== Attorney Daimei, Toshio
Mamo, or one person EndPage: 2 Fig. 1 D 2 f 42 (?) (b) 6 Invention stand and agent address
between places other than the above,-. ???????? ?
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