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JPS5487501

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DESCRIPTION JPS5487501
Description 1, title of the invention
How to drive an acoustic diaphragm
3. Detailed Description of the Invention The present invention relates mainly to a method of
driving an acoustic diaphragm of a head 7 on speaker. In the stereo reproduction apparatus, the
right channel signal and the left channel signal generated by the pair of microphones and the like
are amplified by the right channel amplifier and the left channel amplifier, respectively, and the
pair of output signals from the hall width device is used. We are trying to drive the speaker
system of to get a sense of reality. In the case of using the speaker system of a rattan, the sound
from the right speaker system can be heard not only from the right ear but also from the left ear,
and the sound from the left speaker system can be heard from not only the left ear but also the
right ear Therefore, it is possible to obtain the sense of the spread of the left and right sounds,
and the sense of the spread of the sounds before and after and the motion direction. However,
when the speaker system can not be used at night or due to housing conditions etc., it is usual to
use the head 7 on. When head 7 on is used, the left head 7 on speaker is placed close to the left
ear, and the right head 7 on speaker is placed close to the right ear to prevent sound leakage to
the outside. The sound of the head 7 on speaker can only be heard by the right ear, and the
blame of the left head 7 on speaker can only be heard by the left ear. Therefore, as in the case of
using the speaker system, the spread of the front and rear sounds can not be expected at all, and
there is only a spread of the left and right sounds or it is far from the actual presence and it is
unnatural Since it sounds like the sound in his head, it has a drawback that it is easy to get tired
if you keep listening for a long time. The present invention solves the above-mentioned
drawbacks by mixing and applying the electromagnetic field by the output signal of the left
channel and the output signal of the right channel EndPage: 1 channel to the acoustic diaphragm
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of each of the left and right head speakers. . The present invention method is one nine! The
electrostatic head 7 on speaker according to the embodiment will be described. FIG. 1 is a
partially cutaway perspective view of the electrostatic head 7 on speaker, and an electrode plate
provided close to both sides of a diaphragm ?D made of a polymer film material made of
polyester such as polyester having a single charge on the surface Is I [2 + + 31, a box (4) for
supporting the electrode plate, and each electrode plate! It is composed of terminals + 51 + 61 +
71 which are connected pneumatically. The box body (4) has a rim (9) erected on the outer
peripheral edge of the donut-like disc (8), and a portion having the same diameter as the center
hole (8) I of the disc (8). And a donut-like disc body ao having a central hole (101 ') and fitted in
the edge (9), and both disc bodies by a suitable means such as a stop pin date t13 ... or a screw
f81 (fills are connected integrally.
The electrode plate (1) can be fitted into the central hole (8) of the disc (8) as a concaved central
portion so as to have a cross-sectional shape 1 ? ? shape, and the entire surface of the
electrode plate (1) is ventilated A large number of small holes I are drilled. The other two t me
boards t21 + 31 are front lI [l! The t & plate is formed by cutting a plate of the same shape as J
with a slit. The terminal + 51 + 61 + 71 is attached to the disc body a? by a screw 051 and is
electrically connected to the electrode plate (11 + 21 (31 and lead wire (16), respectively).
Reference numeral 112 denotes a holder for holding the diaphragm till'I. FIG. 3 is a t negative
connection diagram of a static [W headphones beaker, an external pressure transformer (4) for
the right channel, an external pressure transformer 21+ for the left channel and an electrode
plate il ++ 21 + 31 of the speaker unit for the right ear, and the left. The electrode plate of the
speaker @ for the ear is composed of gutter +2) '13 gutter. That is, the primary winding M
(scramble) of the external pressure transformer l2Qlai + is connected to the output forehead
terminal for the left channel of the amplifier and the output (2) terminal for the right channel,
respectively, and the secondary winding (c) Electrode plate tll + 21, electrode plate (1 (connected
to 2 and connected to the left channel speaker (c)) electrode plate (2 connected to the electrode
plate of the right channel speaker device (3), right The electrode plate (2) of the speaker for
channel (2) is connected to the electrode plate (3 on the left side of the speaker for the left
channel). In addition, one terminal of the -next side winding +241 (c) of the external pressure
tonsu bite (company) is connected together. The action of turning on the electrostatic head 7
having the above configuration is as follows. The output for the right channel of the amplifier (C)
and the output for the left channel-are respectively the following winding of the external voltage
transformer (A) for the right channel and the next side of the external voltage transformer
(Corporate) for the left channel The voltage applied to the winding (2) and corresponding to each
output (() is generated in the secondary winding @@ of each (external) transformer of each
external pressure transformer. The voltage generated in the secondary winding @ 4 is applied
between the electrode plates (1) and (2) and between the electrode plates (between two places,
and is opposed to the respective electrodes in response to the multiple generation voltage The
diaphragm portion is vibrated to reproduce sounds for the right and left channels, respectively.
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Further, since the electrode plate (2) is connected to the electrode plate (three grids, the
electrode plate (two grids), respectively, the diaphragm parts opposed to each other are vibrated
corresponding to the respective applied voltages. The vibration output corresponding to the
electrode plate + 31 (three and the electrode plate (two (2), respectively, a difference of about
111 B was observed when the electrode plate + 21 + 31 + 2 and (three were formed into the
same size).
Therefore, the right ear can hear the right channel playback sound and the very small left
channel playback sound, and the left ear can hear the left channel playback sound and the
extremely low right channel playback sound, and thus the speaker system Can be brought close
to the playback state when using. As shown in FIG. 4, the vibration output changes even if the
size of the electrode plate f21 121 'and the t electrode plate +31 (three positions change, and the
electrode plate changes as shown in FIG. 5)! The plates +21 + 31 and i21 'may be cut in the same
shape and connected to the secondary winding through an attenuator. Further, as shown in FIG.
6, two or more t electrode plates may be cut into a desired number. Although the electrostatic
head 7 on speaker has been described above, the invention is not limited to the electrostatic type
alone, and the piezoelectric head 7 on speaker and the electrodynamic head 7 on speaker can be
applied as described below. It is. As shown in FIG. 7, a piezoelectric type head 7 on speaker is
formed by bending a high polymer rectangular plate in the long side direction so that the middle
part of EndPage: 2 protrudes upward to form a diaphragm (d), and the diaphragm The output
voltage of the electrode plate amplifier is applied by dividing and insulating at least one of the
electrode plates cIir (32+ formed in a plurality of sheets) attached and formed on both surfaces
of the diaphragm (the most). Therefore, the diaphragm () extends and retracts correspondingly to
the applied voltage J, but since the diaphragm (2) is curved, the projection moves in the direction
of the arrow () to reproduce the sound. The diaphragm w is vibrated together by the output
voltage of the left channel and the output voltage of the right channel, and the reproduction
sound of the left channel and the reproduction sound of the right channel are reproduced. In the
electrodynamic headphone speaker, as shown in FIG. 8 and FIG. 9, the coil TM + C) 5r is printed
and printed (in a rectangular shape) on a thin film made of stamped polyester J4 / # 1I, which is
made of an appropriate material. The permanent magnet is disposed opposite to each other to
apply the output voltage of the amplifier to the coil. Therefore, the coil to which the output
voltage for the left channel is applied and the coil fafl + to which the output voltage for the right
channel is applied respectively generate a magnetic field corresponding to the output voltage,
and the opposing permanent magnet The repulsion causes the membranous to vibrate and
reproduce the reproduction sound of the left channel and the reproduction sound of the right
channel. The method for driving the acoustic diaphragm of the present invention as described
above has the following effects. One? Only by mixing and applying the electromagnetic field by
the output signal for the right and left channels respectively to the acoustic diaphragm, the
reproduction sound for the large right channel and the reproduction sound for the small left
channel are right to the right ear, and the large left to the left ear The reproduction sound for the
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channel and the reproduction sound for the small right channel can be transmitted to improve
the sense of presence and to hear natural sounds.
4. Brief Description of the Drawings The drawings show an embodiment of the present invention,
and FIG. 1 is a partially cutaway perspective view of an electrostatic head 7 on speaker. FIG. 2 is
an enlarged exploded perspective view of the same part. Fig. 3 is the same electrical connection
diagram. 4-6 is another embodiment of the same electrode plate. FIG. 7 is an enlarged
perspective view of an essential part of the piezoelectric head 7 on speaker. 8 and 9 are enlarged
views of the main part of a dynamic i-type head 7-ounce beaker. (Iti 21 f 31 tl) '12 r (3 points)...
Electrode plate (4)... Body [51F 61 (71 и и и и и и terminal + 81 (1 G и и и и disk body (8 ? ? и и и и
central hole (9) и и и и и и и и и и и и edge (Ill и и и и и -и и Diaphragm l] 21 и и и и и и и N body a 3 и и и и и Stop pin
a 4 и и и и и Small hole (151 и и и и и и screw aO и и и ... - ... lead M ? 2D иии boost trans-over) ... speaker
f241125 + иии - next winding (optimal) @ ... output (supporting) ? иии secondary winding ( Itaru)
......... vibration plate cill13W "и electrode plate ? иии - ии, @ tnlc (5+ иии coil applicant Nishimura
Hisashikai agent Shigeru Suzuki agent Tree Harumi attorney HASHIZUME Eiiya EndPage: ?
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