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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a conventional signal
transmission apparatus, FIG. 2 a + b is a schematic view explaining FIG. 1, and FIG. 3 is an
embodiment of a signal transmission apparatus according to the present invention. 4 is a circuit
diagram showing the encoder in the embodiment, FIG. 5 shows an example of the phase
characteristic of the phase circuit used in the encoder, and FIG. 6 shows the decoder in the
embodiment. FIG. 7 shows an example of phase characteristics of the phase circuit used in the
same decoder. Fig. 1 (a) ft '. , Tr иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии @ @ ? ? О О О и ?@ '1'.
, Rr'5 opening 48-35302 (2) Figure 3 Figure 4 Figure 5 540 54011 square 360 square 18 0013
? ? ? ?, 12, 15, IG, 17141 o 1 o 210 slcl 4 'fl * Maki- 6-July 48-35302 (3) Fig. 6 Fig. 7 O The
river is a few o'clock (7
DETAILED DESCRIPTION OF THE INVENTION The present invention is used in the case of
broadcasting, recording and reproduction on a record board, recording and reproduction on a
tape recorder, line transmission temple, and is used in the case of line 5 to convert multiple
channel signals into fractional channel signals. The present invention relates to a signal
transmission device that transmits signals and substitutes the signals of the minority channel and
the signals of the multiple channels. In stereo broadcasting and the like, there is a device which
converts a 4-channel signal into an mf channel signal, transmits it, receives it, converts it into a 4channel signal and reproduces it. As shown in FIG. 1, jIIJ also has a microphone 1! , Fr. rl, rr are
arranged to collect the sound 4f channel signal L, Get the bird, KL, 8B. This 4-channel signal is
led to the encoder 2 and is replaced with an sf channel signal consisting of L, FL + '1 black-BL-4 j
& black-black-FB + jFL + 11 IL. 2 and jFl, JAR, jFL, JILmFl, ml, FL. A small signal proportional to
"8 L" and "8 L" resembling "I"-"I"-"I". This 2-channel signal is transmitted to a predetermined
place by a transmission system J, 4. The transmission systems J and 4 are composed of a
broadcasting line, a record recording / reproducing system, and the like. In this transmission
system, the signal transmitted by the transmission system, ? is a signal at the decoder 5 and is
PL?1 + ? ?) + PR (mA) ?RL (1?j ? ?) FR ? power at 10 nm L?FR (1 + ?). ") Ten FL
(leakage) + RR (1-nory RL'-L-) 8-one-RL (1 +)"-RR (jl) one-hundred FL (1-)) 1 B'-R-no L = B1 (1 + j
+ Rh (jij))-FB (1-j) 4th deannel signal PL ?, F ? ?, KL ?. Convert to 1 '. However, jl ,,), ?,
compared to R? 1 system small signal, Pl, (1 + j ? ?) t; This 4f channel signal PL ', F' 'which is FL
+ (jFL) ". & L ', RR' corresponding to the microphones czkyfl, rl, and frar of the recording place 1
in the hot water C, 4P14 3-4.2, иии,-<<'l = Mi 4 B-35302-[) 4 ',' (Ira, "-82, I)" The speakers ft '', rj ', /
r' and rr 'arranged respectively perform three-dimensional reproduction of sound. However, in
the above apparatus, since the sum and difference method of appropriately performing the sum
and ? of each signal, the sound source signal for the middle point of the speakers 71 ? and rl
? of the gold polarization as shown in FIG. If it is canceled and can not be regenerated, if it is LPL + j yi + Tori Ichino II L, ?-FR ? FL FL 10 ?-JRL, as shown in Fig. 3 (/ r ', rr' as shown in- The
syllable signal with respect to the middle point X is attenuated in the encoder 2 and the original
localization can not be obtained, and the four input signals PL and RL.
If rl and & / or birds are at the same homology level, and four suby i1fl ', rj', fr ', and rr' are
simultaneously 1 knee and 6 simultaneously, these signals can not be transmitted normally.
Normal sound can not be reproduced. In this study, the above-mentioned drawbacks are
removed, and it is possible to ensure that the resources of any location of the original sound field
are transmitted (and transmitted to A8-even if all the dannels have the same human power at the
same time). It is intended to provide a signal transmission 13.11.1.:2, 48 = 35302 ? = 05??
device. Hereinafter, one real m4 # 1 of the present invention will be described with reference to
the drawings. As shown in FIG. 118, microphones jt, It, rz are located at the left side, the front
right side, the rear left side and the rear right side in the original sound field. Place rr along with
microphones It and rl. frJ-rr (D also the microphone O / at the center of each. C. Arrange the jlfL,
4-channel signal PL, 7B, RL, RB and the / delta-5'-ya y $ -le o 1+, the 651-channel of the OR to
the encoder 1), and with a fixed phase relationship 2. L'-FL + no Flj 900RL + j9 G'JRR + 01 DEG R
', PA + no PL-j90'RR-j90'JRL + 01, etc. Ya y brother, signal, и, R'l: strange, to 6.9 However, + j90
"BL, ten,? Signal indication that 90'Inn HA AL No B wing is 90 "jl to other signals, -j 90 'BA,-,?
This encoder No indicates, for example, $ 4 #AW indication ': =': f 'j%-J ='--6-48- 35302-06, the
microphones fl, fr, 11 ░ and 04. Signals from Or, PL, RL. 1m, FB and Ol, OR are added separately
to the broadband phase circuits 12 to 17, respectively. The phase amount II! IJ, lj and III, 11
equalize the phase characteristics as shown in FIG. 5, and the phase circuit IJ has a phase II! With
phase characteristics 90 ░ a phase out of the phase characteristics of l-paths 12, 15 and 16.17,
ie with a phase quantity 90 ? ? more than the phase amounts of phase amounts 12 and 15 and
16.17. The phase quantity path 14 uses one having a phase characteristic phase shifted from the
phase circuits 12.16 and 1?, 11 by 90 '. Such an output signal of the phase amount 817 # IJ is
added to the mixing 1gJ path II and mixed, and added to the mixing circuit 19 together with the
signal of the signal obtained from the mixing circuit 11 and the output signal of the phase circuit
1 #. The signal L 'obtained from the mixing circuit 19 is applied to the output terminal 20.
In addition, both pairs of phase circuits 1 & 14 all output signal 2, and "?" "2" in addition to the
metal circulation, and s: ce mixed 1 -.- 41 .., -7- o., 5, 5, ',,,, ,: 4a7353G2 knee 07 gold circuit 21 is
mixed with the output signal of phase 2 loop signal output from the circuit 21 to the NI-N22, and
this pair igIJl! 22 is applied to the output terminal 2S. On the other hand, VkLl is provided
between the input terminals of the in-phase layer 11.14, and a slight signal proportional to the
signal RL is added to the phase circuit J4 through this town flit responsibility V ? 1 and the
signal Add to a small signal phase 1g1JillJ proportional to the wing size. Rani, yBJ Ha position
m1mjlII, N variable attenuator provided between the output terminals of IB, mixing a minute
signal proportional to the output value of the phase-1611 through this I l l l l l l j In addition to
ZX, a minute signal proportional to the output signal of phase 1 of about 15 is added to the
mixed H path Ja. In the above, the signals OL and O from the microphones G phone Of and Or are
added to the mixed ?9112 and II through the phase IgJ path no and 12 but this is not
ammadam at a loss of @ 16.11. The meeting may be falsely added to 1tz, zx. ?? --- 4B-3530208 Therefore, if it is set as encoder II of such composition, signal PL will be led out to output
terminal 20 through phase circuit 12 and mixing circuits II and II and phase circuit 12, variable
reducer V 2 and the mixer circuit 27.77 are led to the output terminal 23 as jFL, and the signal
RL is also led to the output terminal 20 through phase -1 & 13 and the mixer circuit is, as + / 90
░ RL as the variable attenuator VRJ, The phase circuit 14 and the mixing times HHi and zz lead
out to the output terminal 2J as -j90 "-RL. Furthermore, signal 1 gain is variable attenuation! ! v81 phase circuit IJ and mixing circuit18. The signal r is derived as + j9 G ? ? 41B at the output
terminal 2 # as + j9 G ? ? 41 B and is derived as ?190 ░ at the output terminal 2 J through
the 4111g1 j 114 and the mixing circuit 11.22, and the signal r is a phase circuit 15 and the
mixing circuit ?e? 'j * 4 and derived at output terminal 2J as 1 & 4 and with phase -JiIJJ,
variable reduction, storage location ti12 and mixing circuit 18. 11 ZZ i ('"I":': 'inscription example
?-?-18-is derived as jPR as an output terminal 2 #.
Furthermore, the signal OL is derived as OL at the output terminal 20 through the phase circuit
16 and the mixing circuit 19, and the signal OR is derived as OR at the output terminal 23 over
the phase circuit Noa and the combination circuit @ 11. Thus, the 3 denier signal LI derived from
the output maze 20 ░ 2 S of the encoder 1 '. 8 'is transmitted to a predetermined place by the
transmission system 1.4. This transmission system 3.4 consists of a broadcast circulation and a
record board re-master system. The 3f channel signals L 'and R' transmitted by the transmission
systems 3 and 4 are transmitted by the decoder 24 to the signal pf L and to the bit B'-FL (l + nori
+ pm (sa) + zoo'az (z-/) + oyaoaFl-e. '+ No L' = FB (1 + j '') + FL (84) -Z90 '' Rlm (1-j + 01 fflj01 xf-ieoo (L'-ir) 9-... 48-35302-10-j 90 ░ (, <9 o QRL (l 10 ? "t + z 9 o 1 1 ta (2 j) FL (1-/) + OL-no
ORI" '-+ 790 "[r-j L')-+ / 90 Channel 15 No. 15 PL ?, FM ?, RL ? ? which is a ░ (?, 4 uo ░
RR (1+ j ? ?) ? 7 u O ? 14 L (24) + FR (1? j ? ? n + oJ 4 ?) OL). Convert to "RM". However,
the value of ? in the descrambling equation is O О ? О l l1 iiv! I can choose JE4 and I can take
different values of encoder and decoder, PL, FR and RL. RR and OL, 4 of OR can also take other
values. For example, as shown in FIG. 6, this decoder 24 is used for the phase inversion circuit
75.2g capable of returning the X slide output and the phase inversion output, the phase circuit
5r-io, 1iJIIElli @ key 571-JJ and the resistors 34-11. As shown in FIG. 7, the phase circuits 27 to
30 have the phase characteristics reverse to the phase characteristics of the phase circuits 12 to
17 as shown in FIG. But L 'is phase inversion I! It is derived as -L at the output terminal 38
through the I circuit 25, resistance J4 and phase-1 O-4s-353 o>-11 path 27 at the output
terminal 39 through the phase inversion circuit Q 25, the resistor 36 and the phase circuit 28
The phase difference circuit 25 and the input signal through the phase inversion circuit 25, the
phase inversion circuit 25 and the phase circuit 29 are equaled to each other as -L (+, j 90 ░) L)
Tori C '11 out sale, cut phase B1. kIl! It is derived as ?L at the output terminal 4 through the Ijunction 25, the low 254, the JJ variable reduction 432 and the phase circuit 30. R 'is derived as
?R at the output terminal 37 through the phase inversion circuit-resistor 37, the IT degree
reduction 427 and the phase circuit 27 and the output maze 39 through the phase inversion
circuit 26, the town fR attenuator 3 and the phase circuit 2I (-,!
90 ░ JR), and is derived as + z 906 B through the phase inversion circuit 26, the resistor J5, and
the phase circuit 29 to the output maze 4Q, and the phase inversion iI! l abbreviation. Derived as
R at output terminal 4 through 2 #, resistor J1 and phase IIIIse. Thus, the four channel signals Fl,
?, RL ?, R ? #, F ?? ?4B-35302-12? derived from the output masts 38 to 41 of the
decoder 24 are microphones of the recording field 1 in the reproduction bath 6. 11. Jr, rl, re and
corresponding L ? ? 1iJf corresponding speakers fII, /, I, fZ, rl are respectively added to
perform three-dimensional reproduction of ? # ?. As described above, according to the signal
transmission device according to the present invention, at least 4f-channel signals of the H-way iI
channel, which is the sum / difference system, and the back eight channels are respectively
provided corresponding to these A predetermined phase relationship is established between the
respective signals, these are combined into a signal of at least two channels by a mixing circuit,
and this + * q and the signals obtained substantially from the center of each channel signal of the
front and rear of the channel are added. Are converted to signals of at least g channels and
transmitted, and these signals are converted to signals of at least 4f channel again. Therefore,
there is no loss of information when converting another 2 channel signal to 4 channel signal, and
it can be transmitted reliably to tS at any position of the confectionery field and all channels have
power at the same time. -48-35302-13 can also be transmitted, and in addition to the signals of
at least four channels of the front two channels and the rear 2f-bannels: signals are also obtained
from the substantially central portions of the two front and rear channels. Since the separation
between channels is improved, and such a channel signal is reproduced by the decoder, the
signal localized at the approximate center between the front and rear channels obtained by the
encoder can be reproduced as it is. Indirect sound is not lost even if each channel is blended,
encoder It can be obtained S Keru original sound field substantially equal to the acoustic effects.
If the signal is not obtained from the approximate center of the front and rear channels J, the
separation between the left and right channels becomes narrower than that of the front and rear
because the channels are blended. In addition, when such a channel signal is generated on the
decoder side, the internal loss is lost with respect to the signal including the phase difference
component, so that the insufficient shading can not be obtained and sufficient sound spreading
can not be obtained. "48-35302-14 In the present invention, as described above, a signal is
obtained to compensate for this lack of indirect sound, so indirect sound is localized between the
left and right channels, and a sense of sound spread is produced. Sufficient (you can get two.
In the above practical example, the 4 d channel signal is converted to 8 t channel and
transmitted, and 4 again? Although the case of converting into yannel has been described, it is
possible to uniformly transmit the conventional multi-channel signal into a small number of tchannels and convert it into many channels again.
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