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JPS50132901

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DESCRIPTION JPS50132901
2, inventor, 7 讐 it award 轟 Wr, (1) 6 Takashima Akihiko name height IIh Narimitsu 3, patent
applicant (07 II JH company 1 phase [phase] Japan Patent Office ■ JP JP 50- 132 901 [Phase]
Application Japanese Patent Publication No. 4'1. (1974) 3.2 ° examination request (all 8 pages)
Office serial number number specification 1, title of invention
Three-dimensional sky rljj sound reproduction system
3. Detailed Description of the Invention The present invention is characterized in that it enables
sound field reproduction over an entire three-dimensional space which can not be carried out in
conventional stereo equipment such as a conventional two or four channel stereo. It is That is,
the present invention is provided with one phase inversion all the output signals of both ears
recorded through the left ear and the right ear such as pseudotypes with amplification of only
one power and correction of reproduction sound frequency characteristics. It is a threedimensional space sound reproduction system, characterized in that a predetermined time delay
is caused by a heel width. An embodiment will be described below with reference to the
drawings. Fig. 1 shows the method of creating the reproduction system river program source
completely, the output resolutions fR (t) and tL (t) of the microphones embedded in both ears of
pseudo-class 1 (R is right ear · L is left) Show ear-r) k Recorded as all program source. FIG. 2
shows how to connect the amplifier 2 in this regeneration system. The figure is a conventional 4channel tnifit device? In this practical example, the first channel and the second channel perform
amplification only of the input signals tR (t) and tTJ (t), and the third channel and the fourth
channel use the ship inverter ( Phase reversal is performed by the reverse phase device, and by
the carton control (filter) processing T, EndPage: 1-correction of the reproduced sound frequency
characteristic from the force t こ の At this time, the output signal s1 (t) of this axial width
number 82 (T). ss (t) and sa (t) are shown by following Formula. s1 (t)-tR (t) S2 (t,)-tr, (t) (11 S3
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(t)--fL (t)? h (t)-8 J (t)--fR (t) * h ( t) This indicates the subscript 1.2.3.4 Fi channel number, and h
(t) is the impulse response of the tone control (filter), and represents the symbol (Xld, integral
division. Also, those shown in parentheses in [] in the figure are sJ widths which are
conventionally marketed. FIG. 6 shows one speaker of the speaker in this reproduction system,
and at this time, it becomes as shown in Table 1 from the signal 111 shown in FIG. In this table,
since Δτ− (distance difference between both ears) 10aT = I10T = L10Ok′i sounds (see FIG.
3), four speakers reach the right ear with a signal 8R (t And the signal 5 II (t) reaching the left ear
is represented by 5Xt)-fR (t-T) + fL (t-t-1t "-'r)-fL (t-aT-T) * 1 (t)-fR (t-at knee aT-T) * Xt) ( In the
equation 21, for convenience of explanation, T, h (t,) -1 is 1S bet as t = fR (t-T)-fR (t-2 Δ-T) (31S
璋)-fL (t) t) − rb (t−2ΔT, −T).
In other words, in the right ear, only the out-of-ear number fR of the right ear in the pseudo
range reaches @, and similarly, only the fL is force in the left ear (a series of human beings
actually enters the position of the pseudo eyelid. It will be the same as L-I. This makes it possible
to reproduce the whole sound field of three-dimensional space. Here, the assumption A of the
+31 equation also becomes wAT, h (+,)-1 becomes melting, but by using a time-delayed speaker
system as shown in FIG. 4, / = (between the ear receiving points) v! By setting jjlle) XSinO =
250XSinO (fa), it is possible to set Δi 伽 ΔT. Also shown in FIG. 3 is a recommended angle of
1167 °, 22.5 °, 12b'16. Then, as h (t) −1, as is apparent from the equation (2), h (t) is ^ in
order to compensate for the fact that the signals cancel out 7 in the low frequency domain which
is not related to the localization of the sound. Fig. 4 does not show an example of the speaker
distribution of the r # lI delayed speaker------system in the practice of the present invention. The
main speaker 5 and the time-delayed speaker Jt are collected in the device tS in which the
damping material 6 is inner layer. The time-delayed speaker 4 can be moved by a mechanism
that can move its position, for example, by a masterpiece such as ldA, lV, lua, etc., and adjusts the
distance of the ear receiving point r # 4j (see Fig.)). It is something like -As long as the
conventional speaker system is fully utilized, the signals from the right ear Kid both left and right
speakers are too fragile, the same holds for the left ear, and it is impossible to reproduce tS in a
three-dimensional space. However, according to the present invention, the elimination of the
extra signal can be performed spatially simply by using EndPage: 2 by utilizing the signal of the
opposite phase with a time delay, and a conventional amplifier is shown in FIG. Such a timedelayed speaker system Yt7JII + has an effect that makes it possible to reproduce the sound field
in a three-dimensional space.
4. Brief description of the drawings. FIG. 1 is an explanatory view showing an example of a
method of creating a program source in the execution of the main playback and reproduction
system, FIG. 2 and FIG. FIG. 4 is a cross-sectional view showing an example of speaker wiring of
the time-delayed speaker system according to the embodiment of the present invention. 181.
Simulated head, 20. Amplifier 300. Main Speaker-4910 Time Delay Speaker 4%, ..., Time Delay
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Speaker System 510. 6,, g & sound materials, damping material 7900 time delay adjustment Hen
v Le patent applicants 英 British Steel Co., Ltd. good end page: 3 procedure correction documentQ Showa id 2 72 3 Hero's Hall 1, $, / + (7) o 4 Japanese Patent Application Shogi, u,! ? 1; 2 2;
title of the invention 2; title of the invention 'A7 L1'! '! '11 (-)) 7 pay 3, relationship with the
person to be corrected Patent applicant address Taiyou City area Higashi-ku Furuichi City 3chome first capital number conspiracy corporation 4, agent,? , Furnace (((姐 姐 # # 1 bIII! 1, Title
of the Invention 1, Title of the Invention Three-dimensional Space Sound-Reproduction Speaker
System
Three-dimensional sky rljj sound reproduction system
3. Detailed Description of the Invention The present invention is a conventional stereo device,
such as a conventional 2 or 4 channel, in stereo. The present invention is characterized in that
sound field reproduction of the entire three-dimensional space belonging to the impossible state
is possible. That is, reproduction of the invention # 'i the reproduction output which generates
the respective output signals of the both ears recorded through the left ear and the right ear of
the artificial head or the real head, and the reproduction speaker sound only for a predetermined
time delay t This speaker is a three-dimensional space sound reproduction speaker system, which
radiates phase inversion accompanied by correction of reproduction sound frequency
characteristics from a speaker and synthesizes left and right sound waves respectively recorded
at the left and right ears of the listener. The present invention will be described below with
reference to the drawings. Fig. 1 shows the method of creating the program source for this
reproduction system, and the output signals Fu (t> and fL <t,> <x are right ears, L is the
microphone signals embedded in both ears of the head 1). The program source is the one
recorded on the left) k). FIG. 2 shows a connection method of the amplifier 2 in this reproduction
system, and FIG. 2 shows the case where a conventional four channel amplifier is used, and in
this embodiment, the first channel and the second channel are input signals. + R (t)-'f-L (t) is
amplified, and the 5th channel and the 4th channel are phase-inverted by the built-in inverter
(reverse phaser), and the speaker control (filter) processing T Corrects the reproduced sound
frequency characteristics. At this time, the output signal of this amplifier st <t>, X; , 53 (t), and 5
ヰ (1) are expressed by the following equations. 19 work (1)-ten R1t no (t)-fL (t) (1) I53 (t) =remark (揖 h (t) J4 <t) =-fg <-Eh ( Here subscript 1.2.3.4r! Indicates the channel title, h (t) ij)impulse response of the control (filter), and represents the sign [X) II'i convolved right. Also,
those shown in parentheses in [] in the figure are amplifiers commercially available in the prior
art. FIG. 3 shows EndPage of the speakers sanded in this reproduction system: 4 arranged iLt, so
that the signals arriving from each speaker to both ears at this time are as shown in Table 1 from
Eq. Table 1 In this table, ΔT,-(difference in distance between both ears) 10ΔT-I10T-LloO is the
speed of sound (see Fig. 3), so the signal that reaches the right ear with four speakers, 5L 2 (t)
And the signal reaching the left ear (5t-e) is represented by the following equation. In the formula
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(2), for the convenience of explanation, Δ1-ΔTyh (t) -1 ° tmo and 1Al1 (t) = 4. (T−y) −t, (t−2
= r, −de) A (t) = + 1 (t−) h (t2 ′ ′?
−)′″ となる。 That is, only the output signal 10R of the right ear of the artificial head
reaches the right ear, and similarly, only the IL reaches the left ear, and a human actually enters
the position of the pseudo and the l @ l @ It will be the same as That is, it is possible to reproduce
the full sound field of the three-dimensional space. Here, the assumption ΔL-ΔT, h (t) -1 of the
equation (3) becomes a problem, but by using the time delay system as shown in FIG. By setting
[distance between sound receiving points of the ear], X5in #, m25.0 X sin θ (C 鳳), it becomes
possible to set AT, N, 蟲 T. Also, 0 shown in FIG. 6 is a recommended angle of 67 °, 22.5 ° and
126 °. In the case of h (t) −1, as shown in equation 1 (3), the signal cancels out in the low
frequency region that is not related to the localization of the sound, so this is compensated for
kW h (t) Is a high pass W filter-0 Figure 4 is an example of speaker arrangement for a time
delayed speaker system sanding in the practice of the present invention? The main speaker 3 and
the time delay speaker 4 are accommodated in a vessel 1ks having a sound absorbing material
and a damping material 6 as inner layers. The time-delayed speaker 4 is operated by the
operation of the tt-moving mechanism such as the hand 7 so that the distance between the sound
receiving points of both ears (see FIG. 3) is adjusted accordingly. It is an egg. As long as the
conventional speaker system is fully utilized, signals from both the left and right speakers reach
the right 'ear, and the same applies to the left ear, and it is impossible to reproduce the sound
field of the three-dimensional space . However, this source # 93 can be spatially easily performed
by utilizing an antiphase signal waiting for the time delay t to eliminate the extra signal, and a
speaker with time as shown in FIG. 4 for the conventional amplifier. The addition of the system
has the effect of making it possible to reproduce the sound field in a three-dimensional space.
4, a brief description of the drawing Figure 1 company present invention reproduction? FIG. 2 is
an explanatory diagram showing an example of a method of creating a program source in a
system implementation, FIG. 2B is a circuit diagram of another implementation of amplification
method, and FIG. It is a cross section shown. EndPage: 51 ・ ・ ・ 擾-2 ... amplifier 51. + Main
speaker 4001 Hourly speaker 4 m, + 0 Hourly speaker system 5 ··· Stoichiometry 6 · · · Sound
absorbing material, damping material 7 · · · Time adjustment ^ ド ル 特許 Patent applicant Kyohei
Steel Co., Ltd. Agent Kiyoshiaki Hayashi '1, display of the case "3, relationship with the case to
correct 4I license applicant address Osaka city area Higashi-ku Furuichi Hokuto 3-chome
addition" t4 FM' M-Inc.-4, agent specification -1, invention Name 1, Name of the invention Threedimensional space sound ambiguity reproduction speaker system
Three-dimensional sky rljj sound reproduction system
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3. Detailed description of the invention The present invention's subsidiary, conventional stereo
equipment, such as the usual two or four channels, makes it possible to reproduce the sound field
of the whole three-dimensional space which belongs to the infeasible in stereo. It is said that.
That is, this invention is a reproduction speaker sound of only separate output signal input only
for both ears that are recorded through the left ear and the right ear, such as pseudo-rei or real
head, and a reproduction speaker that generates a predetermined time delay t. A threedimensional spatial sound-reproducing speaker system is characterized by emitting a phasereversal sound accompanied by correction of reproduced sound frequency characteristics and
combining left and right sound waves respectively recorded in the left and right ears of a listener.
An embodiment will be described below with reference to the drawings. Fig. 1 shows the method
of creating a pu-gram source for the reproduction system of the reed, showing the output signals
fR (t) and fL (t) (R is the right ear, 7R) of the 7-posi-uniphones embedded in both ears of the
pseudo 5111. (II shows the left ear) is recorded as a program source t. FIG. 2 shows the
connection method of the amplifier 2 in this reproduction system, and shows the case of using a
conventional 4,000-Jannel amplifier, and in this embodiment, the first channel and the second
channel are used. Only amplification of the input signal fR (t)-'L (t) Kurayuki 1 1 3rd channel and
4th channel inverts phase sum inversion by inner impulseer EndPage: 6 (reverse phase device)-,
speaker tone Corrects the frequency characteristics of the playback sound from the speaker by
means of a filter (filter). At this time, the output of this amplifier-signal 8L (t) -8te), s, e), 84e) is
expressed by the following equation. 5L (t)-f * (10 + 3, (t)-f, (t Jits, (t)-4 L (t) x h (t) S + (t) S (, (47 *
h (t) where subscripts 1.2, 3.4 indicate channel check numbers 1. h (t) d)-Meet the impulse race
response of the on control (filter), light (X) is the right to convolute? The symbol 0 shown in the
figure or the symbol [] in the figure is a conventionally commercially available amplifier. 0 Figure
5 shows the layout of the speakers in this reproduction system, and 0 o'clock As shown in Table
1 from the signal II'1I1I1 reaching the signal. -Table 1-In this table-[difference in distance
between both ears] 10th'f / 10T-LloOr! Due to the speed of sound (see FIG. 3), the four speakers
ff1It the signal s, which is ff1It to the right ear, and the signal SL (t) to the left ear, are
represented by the following equations. s、(t)−r、(t−?
) + RL (t-1-T)-fL (t → T-2) * Xt) SL (t) wf, (t-4T-te) + rw (t-ri-f, (t-knee (r ()) rR (t-4T () cheek t). In
the equation t21, if it is assumed that Δ is one ΔT, h (t) -1 ° 1-0 for the convenience of
explanation, 18 IL (t) -f, (t-T) -f, (t-2, a -? -T) c (1sJt (t-r) -rL (t-2 [Delta] -T). That is, only the output
signal tft of the right ear of the false ear reaches the right ear, and similarly, only the fL reaches
the left ear, and in fact, a person who listens to the position of the false eye to hear- It will be the
same as That is, it is possible to reproduce the full sound field of the three-dimensional space.
Here, +, $ 1 equation assumption ΔI-Δ! , H (t)-1g, but by using a time-delayed speaker system as
shown in Fig. 4, l-[distance between receiving points of the ear 11i) Xs1mθ-25, OX6t * It
becomes possible for a company to be completed 2 m'l 'by setting it as Q (am). Further, O shown
in FIG. 3 is jf which is a recommended angle of 67 °, 22.5 ° and 126 ° fIh. Then, as h (t) −1,
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as shown in equation 31, h (t) is high to compensate for C and t in order to cancel out the signal
in the low frequency region irrelevant to the foot position of the sound. It is enviable to use a
pass-through filter. The iJ diagram shows an example of the speaker arrangement of the timedelayed speaker system in the practice of the present invention, in which a main speaker 3 and a
time-delayed speaker 4kO are accommodated in a device which is an inner layer of the sound
absorbing material and the damping material 6. The # delay speaker is about 1ii. It is made to
operate by the operation of the ts work mechanism, for example, the hand 7 or the like, and it is
made to make the distance performance (see FIG. 3) Yt between the sound reception points of
the ear by the spring. As long as the conventional speaker system is used, the signals from both
the left and right speakers arrive at the right ear, and the same applies to the left ear, which
makes it impossible to obtain the sound j # t in three-dimensional space. is there. However,
according to the present invention, the use of the signal of the opposite phase with the time delay
t for erasing the extra signal, EndPage: 7 is empty, and it is easy to do. To play the entire sound
field of a three-dimensional space by adding the whole time-acquired speaker system as shown in
the flesh? It has an effect that makes it possible.
4. Brief description of the drawings. FIG. 1 is an explanatory diagram showing an example of a
method of creating a program source in the present invention reproduction system. FIG. 1 FIG. 2
FIG. 2 different implementation circuit of Bri * 7 system, FIG. FIG. 4 is a cross-sectional view
showing an example of the speaker arrangement of the time-delayed one-speaker system
according to the present invention. 1,-, & & 201 Amplifier 329. Main speaker-4000 hours delay
speaker 4 *, time delay speaker system 5 ... 6-, g & sound material, damping material 7000 hours
delay adjustment Hendle patent applicant Kyoei made-EndPage Co., Ltd. 8
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