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Soktae Snow 1, Title of the invention 参 ヘ ッ ド 装置 装置 装置 装置 h h + す [東 渋 119 渋 渋
119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 唐 唐 (4) Nibiru (5)
examination request x 4 'lU /' / 13Z [phase] Japan Patent Office 0 published Nissho 49. (1974)
4.1 examination request existence (all five pages) Office internal reference number: 0 Japan
classification □; 73 strokes 231. /! 9λΔ り 73, D, 佼 i / ρ2k2 // 1 □□□ Specification / 0
title of the invention / 0 title of the invention channel for the headphone device, 41 claims left
front and back, right front and back The headphone unit / 2 and 3 · each pair in the sound
transmission left ear side case j and the right ear turbidity case 6 and the case! A sound
transmitting wall 7 is provided to separate the headphones 22) / − 2 and 3 · q, and the sound
transmitting ear cover t is attached to the case j and the heel, facing the ear, and the speaker
Case j and 6 · Transmission acoustic impedance of the acoustic wall 7 in a similar manner to the
reference channel reproduction sound by the system. A headphone for a ≠ channel device
characterized by selecting a ratio of beading and 9).
■ JP-A 493 5001
3. Detailed Description of the Invention In the present invention, the same sound as in the case of
listening to the sound to be reproduced by the I-f channel speaker system in the channel stereo
reproduction room is listened to by the headphone. The purpose is In general, when listening to
the reproduced sound from the speaker system of the μ channel stereo device, as shown in FIG.
1, ス ピ ー カ speakers 8 / -bowls are arranged at the four corners of the reproduction room A
with good acoustic characteristics. The loudspeaker system that is made to hear can obtain the
best three-dimensional sound effect. In this case, the sound from each speaker system is in the
reproduction frequency band (20 Hz to 20 KHz) for the left and right ears due to the influence of
the shadow of the listener's head. It propagates with sound pressure characteristics and phase
characteristics that are constant with respect to frequency. Further, the sound pressure of the left
and right outer ear introduction ports is nine, since the transmitted sound of μ speaker s / -8 I /is superimposed. Therefore, if the sound from the letter headphone unit arranged near the left
and right outer ear introduction port Jan is the same as the sound superimposed by the speaker
of S / ˜ s44, the above-mentioned speaker system left EndPage 1 Sound pressure similar to the
sound pressure obtained near the front and rear ear entrances of the right outer ear jat @ can be
obtained, and the same excellent sound effect as a whistle can be obtained by listening in the
middle of a stormy reproduction room in the acoustic characteristics. It can be obtained with a
channel device headphone. As shown in FIG. 3, when Heradhoe / units l to t are independently
connected to the amplifiers d, the sounds of the left and right outer ear inlets 1 / -NilK each ang
mu l mu 4 It can only be obtained alone, and it has no wife in the sound that is similar to the
kucha / nel reproduction sound by the speaker system. Therefore, the present invention is 4 in
which the sound and the contrivance are applied to the material and structure of the enyne case
No. ear cap, and the O sound is superimposed from each spat) horn unit. That is, as shown in FIG.
1I, as shown in FIG. 1I, the headphone units 1112 and 34 at the left and right before and after
the right are paired with each other and housed in the sound transmitting O1E case j and the
starboard case. , The case j and the 4-head double headphone unit /, 2 and rJJ- provided with a
sound-transmitting sound I17, the case of a sound-transmitting ear covering t facing the ear! And
tK strain. Case j and 乙 / Acoustic wall 70 acoustic impedance, acoustic impedance of the
direction opposite to the ear of the ear cover -t and the direction orthogonal to it so that sound
similar to the ginseng channel reproduction sound can be obtained by the speaker system The
point is that the ratio of
Since the acoustic impedance affects the magnitude of the sound propagation or the phase
characteristics of the sound 4, the pigeons with which the propagation from the speakers S /-and
-S ≠ is, for example, 11 points (1st Ia) LJI, I [(D In the case of distant objects in the shadows, the
sound changes, and the position changes. Therefore, this study chooses W material case O ear
cover or the material sound transmission of the sound wall appropriately, and it is the same as
the stuttering O sound-sound sound / beadance that propagates from O O sby * 81-B ≠ The
acoustic impedance is obtained to superimpose sound. ケース! And 4 are made of punching
metal / wire netting as a substrate, and Table 1 ii K 7 L, cloth one continuous open air O
urethane home etc. is constructed by covering itself with sound transmitting (3) permeability,
headphone unit / The sound of ˜ μ is transmitted to the outside through case j and 乙 or to the
extent that the outside sound is inside cases j and t. At the same time as the sound from the earcover rFi headphone unit goes forward and backward through the outer ear introduction port as
an arrow. Since the book has the property of transmitting sound-6 also in the direction
perpendicular to that direction, it is made of a soft material such as thick felt or open-cell
urethane foam. The wall 7 isolates the storage unit of the headphone unit---and 3 @ ≠, and is
made of, for example, punching metal or the like to which the sounds of-/-2 and 3 · J are
mutually transmitted to some extent. The numeral 10 is an acoustic plate made of a large
number of small holes, such as punch 7 metal, etc., arranged to stop the earlapping t and to
protect the headphone unit. / 1 is a mounting unit for mounting the headphone unit /-2 and 3 ·
socket by means of screws, rivets, bonding, etc. 7.2 is a support plate for connecting and
supporting the case j and the heel and the head band / 3, l A code for reading headphone unit /
@ λ and 3 · 弘, ≠ ≠ ア ン プ ア ン プ ア ン プ 1 1 1 1 1 1 1 1 1 1 1 1 、 1 l1 ik, r is an
amplifier output terminal and a buffer for 0 llill. The illustrated example shows a dynamic
speaker consisting of a magnet / j-diaphragm l 乙, a magnetic circuit 17, a voice coil 1 and so on
as the headphone units l to μ. It may be a loudspeaker or other electroacoustic transducer. Since
the present invention has the above-described configuration, for example, 1 (3) (2), the left outer
ear inlet in front of the Jcm-resistant 1! The sound pressure at the point / is obtained by
superimposing the propagation sound of the headphone unit / ˜ ≠. That is, the sound of the
headphone unit l is transmitted straight through the acoustic plate 10-ear cover rt- to reach
111IL4c, and the threshold space l between the acoustic line 10 of the headphone unit and the
mount / l is orthogonal to the straight direction The ear cover t is transmitted to reach le / point
while propagating in the direction.
In addition, the headphone unit 3 · 4 tt) sound is transmitted through the inside of the ear cover t
orthogonal to the straight direction and through the meat and the case, and one head oJ! Over
the 11 ts, the case j on the opposite side as well as the ear coverings penetrate l to reach the l1
point. This K) 1 / point EndPage: 2f) fj E is a superimposed sound of the headphone unit / ˜ and
becomes nine. Miserable N co ˜! At the saddle point, this superimposed propagation sound is
obtained. The transmission acoustic impedance of the case j and 6 and the sound barrier wall 7
and the ratio of the acoustic impedance of the direction opposite to the ear of the ear-covered vt
and the direction orthogonal to that direction are the case! And t · Sound 11 IPI 117 · If the same
timbre is obtained as in the case of listening to sound in the poor reproduction room according to
the material and structure of the ear cover t, it is possible to obtain nine sounds similar to the μ
channel reproduction sound by the speaker system. You can listen to it with a headphone.
Brief Description of the Drawings Fig. 1 is an explanatory view of the relationship between the
speakers of the visiting channel reproduction room and the loser, Fig. 1 is an explanatory view of
the propagation of sound from the speakers, and 3m is a visiting channel device. A clear view of
the connection between the for-earphone and the amplifier, and the reference view is a partially
longitudinal front view of the present invention headphone. First sound, 7 is the sound I # wall
formed in the case j · 5. Dhorn unit 1112 and 3 · A storage room for loin, lo is an acoustic plate, ll
is a dispersion stand, / 2 is a support plate, 13 is a head band, l hiro is a cord, p # i plug. Fujiki
Denki Co., Ltd. Agent 襦 1) Susumu EndPage: 34, Inventors other than the above Name Hideyuki
Kawaguchi-part (spontaneous) procedure correction book Shotoshi 1a1 army! May 37th Patent
Office General Secretary Yukio Mikage: 3. Those who make corrections 4, agents Tokyo Shibuyaku Yoyogi-09 No. 2 Shi) Karasawa No.-Building (: 3825) Patent Attorneys 'Fortune 1) Seki' i
[Story 37 (1-6426 (for) EndPage: 4 ( 1) Join page 1 of the specification, line 1, "Ie / -Ili--" (2) (Fig.
1). (2) Correct the page 3 of the drawing to a separate sheet. MO, Co 3mA / 5-EndPage: 5