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JPS533801

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DESCRIPTION JPS533801
For the rear and side, the volume of about 0.5 dB for d = 0.36 is attenuated. Decoding is
performed according to three equations: TSI = u u -4- (K + j d) Cos θ ++ j # in θ (102) TBR = + t
L + -4- CK-j d) cot θ → jz in θ (one part) Ts T = du S Cal θ + Ktrin θ (104) has solutions for u,
Calθ, and zinfl in l5L-TSB and -jTBr, and the determinant arises from the fact that it becomes 1.
From these solutions, the following introduction can be considered for decoding in the normal
TMX state. T □ = u (105) TΔ = cozθ-jzinθ (xoa) TT = Co # θ + jpinO (107) Therefore, if TsT is
zero, its gain to receive the decode of MX is appropriate as a result. The equations are compatible
by using EndPage: 23 of the usual 4 alpha channel 4 channel T8, and other linear combinations
of these channels can also be obtained. Solving for equations (105), (106) and (10 "7), Tz = (TSR
+ TBL) + (K + 1) ++ (TSR-TSL) no Kd + .. 7TST jd (] 08) TJ" "(TBR + TPiL) + J '(K + 1)' ++ (TSR-TsI,)
(1 + + 4)-+ TST (K-1) (109)-TT = (TAR + TSL)-? rj '(K-1) -t-) (TSR-TSL) (1-x + d)-+ T (K + 1) (110) T
If TQ is also available, this is appropriate for TMX decoding or QMX decoding It becomes the
above-mentioned formula as an accurate display to a certain signal. If T13 T can not be used,
then the equation 1 1 □□□ is simply the error term below T 下 記 plus. That is, Ef-&d2T.SIGMA.-, -jd.SIGMA.1f3icoz.theta.i-)[email protected], d.SIGMA.1F3izird) i (l, 1,) or the equation (109) is
simply an error term of .tau..DELTA. That is, E.DELTA. =-6-7d (K-1) TX +-+ (K-1) .SIGMA.iSicosei
++ jx (x-1) .SIGMA.iSisin.theta.i However, as a decoding impossible term that causes an error in
BMX decoding. The use of the δ scheme simply depends on a small d (4 is approximately 1), but
this compromises the fully decodable δ scheme to compromise the decoding inability to the
relatively large volume changes of the δ scheme. Because it is The sigma phase shift can also be
introduced into d'75 with further changes in volume only in the case of monaural. Stereo shared
transmission channels with encoding trajectories other than 0 ° and 180 ° can of course be
used in systems using a synthesized complementary channel such as an envelope logic system as
described above.
The signals of the stereo shared transmission channel can be recorded on a conventional
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recording medium such as a magnetic tape and a recording disk by a known apparatus and
method. For example, the signals TsL and TsR can be recorded on the 45-45 cotter as left and
right channels of a recording board, this recording being similar to a suitable matrix decoder. It
can be reproduced by a conventional well-known mono and stereo recording device. In addition,
another channel such as TT or TST may be a TSL such as a signal costing an angle rv in a multifrequency manner as described generally in U.S. patent application 468.26B already mentioned
in the text. It can record with TS □ signal. The apparatus for providing and decoding the
monaural and stereo shared signals are the signals of the mains which are narrowed down
according to the equations 18f) 1, (81) and (2) d (1 (77)) respectively. Well-known circuit
elements having devices for forming and synthesizing the components and having suitable V
'parameters can be used for this purpose. Shown in FIG. 18 is an embodiment of an apparatus
600 for providing the signals TSL and Ts □ as established by the equation 定 着 1) and the
sister. In this encoding apparatus 600, the source signal is transmitted to a reference 祠 υ C trix
circuit 604 as described in US Pat. No. 3,906,156 to produce signals TΣ and TJ. The signal T
[Delta] is transmitted through the polar splitter 606 to provide the + T [Delta] and -T [Delta]
states of this signal. The harmonic unit 304 provides a T.SIGMA.-fold signal harmonic state (with
respect to the T.DELTA.-fold signal from the splitter 306) which is advanced by T.SIGMA. The
delayed T.SIGMA. Multiplied signal -T.DELTA. Signal is combined in summer 308 to produce
signal TsL. + T.DELTA.TJ is combined with the advanced TX signal in summer 310 to produce a
TsR signal. The signals -TSL and TSR are denoted by the subscript δ, and represent the stereo
signals for equation Q31) and T82. Shown in FIG. 19 is a set @ 350 for decoding this δ state of
the stereo double-edged signal 'ISL and TEIR. These signals are transmitted to the matrix unit
352, which is applied to the reference 14MX decoder 360 to combine the signals synthesized by
the edge calculators 358 and 356 to provide the uMX signals T.SIGMA. And TJ which result in
the speaker display signal. The signals Tsu "FC-jδ) and TsL #: tPCjδ) are provided, together with
the original signal, which is further provided to the device 354 which provides the element 1 /
coxδ for appropriate introduction.
Shown in FIG. 20, which is similar to FIG. 7 of US Pat. No. 3,904,156, is shown in equations 1 (2)
and (1 (u'y--defined signals T13 L and TsROrKJEndPage: 24 It is a circuit 400 for generating a
state. In this device, each source signal is transmitted to a polarity splitter 402, the output of
which is further transmitted to a sin-cog bot 404 which is tuned to each power source angular
variation. For each source signal, the cor signal and the + co signal are adapted to introduce the
rKJ factor. And the rdJ factor is properly adjusted as shown by the apparatus 40 B for
introducing factors, and appropriate signals are combined in the adder 410. The correct phase
relationship is provided by the reference phase and the 90 ° phase shifter 412.416. The
appropriate combination of signals is combined in the adder 414 to show the signals TSL and
TSR shown with a subscript (K) to indicate the rKJ of the signal defined by the equation 噸 and
(101). Give each one. Shown in FIG. 21 is an apparatus 450 for decoding an rKJ stereo shared
signal according to equation 1−10. In this connection, the signals TSL, T8 □ and one TST are
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transmitted to the matrix circuit unit 452 which solves the matrix of contours 102 to 104, the
determinant of this matrix being 1 and the equations 105 to 107 Generate TΣ, T, and T, as
shown. As mentioned earlier, the -T8T signal is a stereo shared third channel and contains signal
components to compensate for the error term otherwise introduced in the reference tLMX
decoding. The device producing the sixth channel of the 18T is not shown, but for the sake of
ease, the definition component of this signal is a suitable device based on the teaching of the
present disclosure and on the basis of the above-mentioned US patents and patent applications. It
will be clear that it can be synthesized. The signals T.SIGMA., T.DELTA. And TT provided p by the
matrix circuit 452 are transmitted to a reference tLMX decoder 454 which provides a directional
loudspeaker signal for performance to the listener. Individual sign changes will be made in the
definition of certain of the signals, and the signals will generally be defined in the text as defined
in terms of the size of the units that can be changed as required.
4. Brief description of the drawings] FIG. 1 is a schematic view of one type of four-channel
acoustic system, FIG. 2 is a diagram showing an angular position useful in matrix encoding and
decoding, FIG. 3 is four channels, 3 Fig. 4 shows the rotational symmetry of the special four
transmission channel display kernels of Fig. 6, Fig. 4 a series of six polar coordinates showing the
dimensions of the eigen kernels of certain aspects of the channel system and the two channel
matrix system. Fig. 5 is an m-uniform block diagram of the 4-4-4 matrix system, Fig. 6 shows a
series of six polar coordinates of the size of the ice core of some characteristic tables, Fig. 7 is a
yatrix FIG. 8 is a diagram showing a track of magnetic tape for multi-channel recording, showing
polar coordinates showing the effect of matrix imbalance in a state. FIG. 9 is polar coordinates
showing the magnitude of one matrix state of the right front signal including matrix
complement signals, FIG. 10 is a schematic diagram of a signal synthesis circuit useful in sound
image enhancement, Fig. 12 is a schematic view of a circuit for generating-Fig. 12 is a general
view of -p like matrix logic circuit, Fig. 13 is a schematic view of a processing block for the circuit
of Fig. 12 and Fig. 14 is Fig. FIG. 15 is a schematic view of a processing block for the circuit, FIG.
15 is a schematic view of the processing block for the circuit of FIG. 12, and FIGS. 16 and 17 are
schematic diagrams of envelope forming circuits used for the circuit of FIG. And FIGS. 18 to 21
are schematic diagrams of a circuit for processing of stereo common multidirectional signals in
six modes. 100: Signal generator 101: Circuit, 102. 104: 90 ° phase splitter, 110: Voltage
controlled oscillator, 112: Phase splitter, 114, 116 ° 118: Magnifier circuit 120: Automatic gain
control circuit 111. 122, 124: Magnifier circuit 109, 126: Adder 12B: Automatic gain control
circuit 130: Detector. EndPage: 25132.134 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
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end・ Level detector, 164 ... 苅 J calculator, 166 ... limit device. Patent applicants Shuan, HajimeKu, Cooper, a lawyer, a patent attorney, a patent attorney, Yuasa Ayu, I., II (-No, 1EndPage: 26
yarn da i 6 °-and EndPage: 27
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