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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention,
FIG. 1 is a plan view thereof, and FIG. 2 is a cross-sectional view thereof. 1a, E · · · · · · · · · · · · · · · · ·
· · · · · · · · diaphragm portion separated by the corrugation 3, 4 · · · · · magnetic yoke, 5 · · · · · · · · · · ·
· · · · · · · · · · · · · · Dunbar. Fig. 1 Fig. 2-63-
[Detailed description of the invention] The X device is 4 over the stereo headphone speaker. In
the conventional stereo headphones having one speaker t- on each side, the left and right sounds
are separated to reproduce the spread t of the sound, but the reproduction of the depth of the
sound is impossible. Therefore, to reproduce the spread and depth of the sound, for example, in a
4-channel stereo t-headphone 聰 た め for K is crimped to the left and right ears, respectively 2
speakers inside the left and right sounding body wa same back! It is necessary to set W *.
However, the convenient use of a total of four speakers, two on the left and right, is not only
bulky and heavy but also has a disadvantage of being too heavy (1) 48-95625-02Js; In general,
the directivity of the sound becomes sharper as the treble becomes sharper and duller, and in the
4-channel stereo, it is necessary to clarify the middle to treble w: in the part N of the front and
back direction sound, but in the bass region So important matter and not mind, X consideration!
j!! The present invention is intended to provide a headphone speaker capable of clearly
separating sound in the front-rear direction by the left and right n1 speakers based on this
principle and exhibiting a three-dimensional sound effect. One embodiment of the invention will
be described below with reference to the drawings. Two upright voice coils (1a) (1b) rc are
common swings WhiIi +! 1 (for example, corn paper) is integrally seen, but this vibration wIJw
(2) is divided into six parts (2a) (2b) (2a) acoustically by corrugation Separated, (2gL) W and l ')
b) are respectively a voice coil (1m) (Ib) K coupled n via corrugation 13) n, (2c) fjB is Colgauge
13) t- (2a) and (2b) 111 CJ [i "q K ls + an 't' z, b, ... ,,. (2) ÷ → 圓-pole (4) is iIw! ! (B) a magnet for
driving the voice coil (1a) (Ib), a corrugation damper for holding the center of the l1ll ij voice coil
(1 m) (1 b), and 171 ij footwear cap. The arm side of the operation of the next KX device. When
the front and back signals independently flow through the voice coils f1a and 1b separately, the
voice coils tla and 1t + are independently applied with an applied voltage f [−]. In this case, since
the phase of the voice coil of each of the voice coils in the middle to high range is clearly
straightened, the vibration in the (2a) portion and the (2b) portion of the diaphragm 12) is
separately vibrated and sound in the front and rear direction Are separated and reproduced, and
the (2c) portion of the diaphragm (21) produces a synthetic vibration of the vibration of the (2a)
portion and the (2b) portion.
However, the phase difference of the current embedded in each voice coil (1a) (1b) is not clear in
the low frequency range and becomes nearly same phase, and the wJ board + 2H7) (21L) (21))
and (2C) As a result of the parts vibrating together and in common, the sound separation is
worse. But this is not very important in the low range as mentioned above, and it is equivalently
backwards. A large vibrating plate wj j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j j
j j j j j j j j k j It becomes. That is, it is possible to obtain one stereo headphone speaker combining
both the separation layer in the middle to high range and the radiation efficiency in the low
range. With the speaker of the above X device, it is possible to clearly separate and reproduce the
sound in the front and rear direction with only one tf speaker, and by making it possible to
reproduce the three-dimensional sound as, for example, four channels in two channels by using
the left and right ones respectively It will be. Moreover, it came to be able to obtain such
headphones in small quantities, at low cost and at a low cost.
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