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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram of the embodiment of the
invention, FIG. 2 is a schematic diagram using the device of the invention in a performance hall,
etc. FIG. 3 is an explanatory view of the operation principle of COD, FIG. FIG. 5 is a connection
diagram of the CCD, FIG. 5 is an operation explanatory diagram of the delay circuit, and FIG. 6 is
an input / output waveform diagram for describing the operation. VFO: E microphone, A:
amplifier, RA: delay amplification E: listener, R 'U: delay device, CCD: delay element . Fig. 1 89-the
real opener 49-61940 (2) (ne) 1) L ,, uTJA / 07DzDaDφ 1 -D only, D 1 '' 5 ° "" one "γlO-90actual opening 49-61 g 4 o (3) Fig. 5 (0-) ψ) (C) (gradient 1-121-tC)-91-
DETAILED DESCRIPTION OF THE INVENTION The device of this invention is suitable for use in
performance venues, with a delay amplifier system Kll. The conventional amplifier amplifies the
input signal of the microphone by a single TK, and as it sounds from the speaker:. Therefore, the
listener who is behind the audience in the performance hall has a direct sound from the stage (or
a playback sound from the nupy force disposed in front of the stage) and a playback sound from
the nubica disposed behind the stage. You will hear both. That is, the direct sound from the stage
is heard by the listener with a certain time delay, while the sound which is picked up by the
microphone and X * emitted from the rear Noubika through the amplifier has no time delay and
can be heard by the listener immediately . In this case, the same sound may be heard in a timeshifted manner, and an unexpected echo or the like may be generated, which may be acoustically
undesirable and the clarity may be impaired, which may cause a problem in a lecture hall or the
like. Moreover, this tendency had the disadvantage that the venue would be large and extremely
remarkable. This device was designed to eliminate these conventional drawbacks, and it was
considered that the direct sound from the stage such as the performance venue was Delayed
time-delayed reproduction sound from the customer's seat from the amplifier is delayed in time
by a signal delay device to be described later to make the respective sound waves coincide in
time, and the direct sound and the reproduced sound passed through the amplifier
simultaneously at the customer seat ic K sounds like 2 + 1. First, the details will be described in
accordance with the illustrated embodiment K112. In FIGS. 1 and 2, the microphone M is
connected to the input @ of the unia IA via a delay unit RU using a COD or the like described
later, and the output of this amplifier is supplied to the speaker 8PK. Further, the CCDK applies
the output of the oscillator vFO as a control signal, and the oscillation frequency of the oscillator
VFO is set to 11 by varying the variable resistor VR or the like. Thus, the charge transfer
amplifier RA is configured by the delay unit iRU, the amplifier and the oscillator VFO. Next, a
microphone M is placed on the front stage of the hall H in the performance hall as shown in FIG.
2); and the signal A pickled by this microphone M is transmitted via the delay amplifier RA. If it is
delayed and the rear audience direction is made to emit sound from the speaker SP, the direct
sound from the stages etc. and the reproduced sound from the speaker SP to the listening old
number in the rear in the Kihoru H. You can match and listen at the same time. l There is CCp as
an example of the delay element used in the above delay unit RU. This CCD 1j, 1970, ISSCC (Int @
rnationa 18 o 11 d 5 tate Cir @ uitConf @ r @ nce), Bell, W. Lab.
In the new semiconductor device announced by BoyleK, this device can freely move charges in a
two-dimensional space, and has an excellent function of storing 41To. 11) If the device
configuration described above is schematically shown, as shown in FIG. 3, an insulating film 2 is
provided on one surface of an N-type (or P-type) semiconductor substrate 1, and two metal
electrodes 3m are formed on this insulating film 2. , 3b was installed. In the hole transfer, as
shown in FIG. 5 (a), a negative voltage -VlB is applied to the -15 side electrode 3a, the
semiconductor substrate l is grounded (positive voltage) and holes are injected. Then, when a
voltage of -Vt (Vt> Vs) is applied to the electrode 3b as shown in FIG. 5B, the aforementioned
nine holes move from the electrode 3 & side to the electrode 3b side. Thereafter, as shown in FIG.
2 () (e), when the voltage of the electrode 3 & is set near the ground potential and the voltage of
the electrode 3 b is set to 1-, the electrode by holes described above is spatially 3b from the
electrode 3a. Next, an embodiment of a signal delay apparatus using a CCD having the abovedescribed characteristics as a delay 1 element will be described with reference to FIG. In this
device, n delay elements DI-Dn are connected in series between the input terminal IN and the
output terminal OUT for capturing a human power signal, and the delay Ill delay function of the
delay element is controlled at the terminal of each delay element. The control signal lines
.about.Lfi are respectively connected from the variable frequency oscillators. If the delay circuit
DL constituted by the above-mentioned delay element group is specifically shown, as shown in
FIG. 5, a unit delay element may have five electrodes 1a on an N-type semiconductor substrate;
Similarly, a unit delay element, a child, and (D 1) delay elements are cascaded in the same
manner as in the portion composed of Jlb and lc (the portion enclosed by the alternate long and
short dash line in FIG. 5). It is connected and lined up in good shape. The electrodes La, Lb, Le
are connected in common to the control signal lines, L, L respectively with the I terminal of the
other unit delay elements, and the five-phase clock pulse from the variable frequency oscillator
VFOl is the terminal 1a, It applies with the fist of lb and le. Here, as shown in FIG. 5 (a), the
electrodes 1a-na are integrated. When −v I (via J voltage) ′ ′ ′ (twice V,> V, etc.) is applied to
the electrodes tb-nb and 1e-nc, an input signal causes holes to be generated under the electrode
ta. Next, as shown in FIG. 5 (b), when the electrode 1b-nbK-- (transfer voltage V,> V) is applied,
the holes under the electrode 1a start transfer under the electrode tb, and then As shown in FIG.
5C (C), holes are fixed under the electrode 1b by the application of the electrodes 1a-na and lcncK-V, and the electrodes tb-nb to one electrode, and one electrode The transition is completed.
As described above, since one hole is moved by one clock pulse (voltage fifification) + 51, and the
oscillation frequency of the variable frequency oscillator VFO is 60 KH 2, the three terminals of
the unit delay element are positive. The time to move the hole is 576,000 g * c = α 05 m 5 e
Next, delay α65m5 · C2 () X200 = 10msec if the number n 200 pieces and of the delay unit is
made possible.
1 Therefore, the delay time T in the delay circuit DL is given by (number of electrodes /
repetition frequency). Here, when an input signal (pulse) as shown in FIG. 6) is applied to the
input terminal INK, the output terminal 0UTKF! "The output will appear after the coping time T.
As described above, according to the present invention, since the voice from the microphone is
delayed by the delay device using the CCD gold capable of varying the delay time and the
speaker emits sound, the direct sound of the H1 from the stage and the audience are used. The
direction can be matched in time with the sound waves from the speakers, so it can be heard
clearly. In addition to the above effects, by adjusting the delay time adjusting knob, it is possible
to avoid the feedback loop near the resonance frequency of the hole 1) and to prevent howling.
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