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JPS5280630

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DESCRIPTION JPS5280630
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a magnetic recording
and reproducing apparatus according to the present invention, FIG. 2 is a partially enlarged view
thereof, and FIG. 3 is a circuit diagram. 1 is a microphone, 2 is a speaker, 3 is a magnetic tape, 4
is a switch, and 5 and 6 are amplifier circuits. Fig. 1 IL 2 scale Fig. 2 Fig. 3-261 actual opening
52-80630 (2) correction correction 52.1. 18
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microphone of a
so-called portable magnetic recording and reproducing apparatus. Conventionally, in order to
record a three-dimensional sound (stereo), it is known to use two mirophones and record right
and left sounds respectively on a single recording tape. Therefore, any recording and
reproduction apparatus can be compatible and used because it is Korean-standardized as to
which direction of signal is to be recorded on which track of the aK recording tape. Therefore, it
is necessary to determine the right and left sides in advance with respect to the direction of the
generated sound of the setting position fi1 m of the C-phone. (1) In general, in a device which can
move the microphone freely by a cord and can be installed without any supervision or in a device
as shown in the figure 1141 in which the microphone is fixed in the recording / reproducing
device It is. The present invention is a llk format, which will be described in detail according to
the following description. The first aim is a portable magnetic recording and reproducing
apparatus, which can record and reproduce stereo, and when reproducing, it is directed to the
listening neck device, so the sound in the left direction from the speaker 2L, right from the
speaker 2R It is usual to hear the sound of direction, and from this point, the operation buttons
and the like are provided toward the front of the loser. However, when recording, from the
relationship of 嬬 device! If the left sound from Italophone IL is to be recorded by introducing the
right sound from JR d1 operation S: always direct the back to the sound source or operate the
magnetic recording and reproducing device from the back to the device It is inconvenient to Also,
in the case of the final arrangement, it is possible to operate from the blood circulation. However,
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there is also a possibility that the recording tube is made from the semi-directive. Therefore,
according to the present invention, the company, as shown in FIG. 2, may either rotate the
mirophone so that it can rotate in the direction of the sound source, or-make a through hole so as
to obtain a sound conduction hole up to the back of the recording / reproducing apparatus. Make
a push and rotate K in the back direction! When it is turned K so as to point or push the
telephone W, IL and IB, the left and right signals are mutually switched by the switches 4L and
4RK. Because of this switching K, if the operator correctly directs the microphone to the direction
of the sound source, the recording / reproducing device, whether it is the front or the back, the
track of the determined magnetic tape is correct. To be recorded. Therefore, if the O magnetic
tape is reproduced by another recording and reproducing apparatus, the right and left direction
is reproduced correctly. In the above explanation, to make it easy to understand!
Italophones JR and IL are arranged as shown in the drawing, but the reverse is also possible, and
in the case of 11M3 as well, in the case of the changeover switches 4B and 4L) recording
amplification-provided in front of paths 5R and 5L Of course, the same effect can be obtained by
providing (2) in the recording increase circuits 5R and 5L. As described above, the present
invention is a circuit that achieves very effective results by a simple circuit. 4. A simple
explanatory drawing of the drawings relates to the present invention, FIG. 1 is a perspective view
of the magnetic recording and reproducing apparatus, FIG. 2 is a partially enlarged view thereof,
and FIG. 3 is a circuit diagram. 1 is a microphone, 2 is a speaker, 3 is a magnetic tape, 4 is a
switch, and 5.6 is an amplification (round) path. Utility model registration founder Pioneer Co.,
Ltd. (4) / IL1 R · · · · · · · · · · · · · · · t4 LSL 3 "21 □ [2 IL 4 R station translated Fang 3 diagram
practical model at at 10 shares onnie shares Person company 80630, '/ = i meeting procedure
procedure correction (spontaneous) January 17, 1977 Secretary of Patent Office display of the 1
case display case name of the syllabary utility model registration application No. 158027 2
magnetic recording Relationship with the person making the correction of reproduction device 3
Utility case Registered applicant 〒 153 Address Tokyo, Meguro-ku, Meguro 4-1-1 name (501)
Pioneer Corporation 71 representative Waka S = b town (7613) 2111 ( Major representative)
Date of correction instruction 4 Showa Date of Showa Date of the year 1) Shipment of correction
5 Description of the correction 1 Details of the correction 6-Correction 1 Correct the
specification as attached. Specification 1. Magnetic recording and reproducing apparatus 3
Detailed description voice of the invention The present invention relates to a microphone
apparatus of a portable magnetic recording and reproducing apparatus. Conventionally, to record
a stereo sound (stereo), two microphones are used, and left and right signals are recorded on
separate tracks in one magnetic recording channel 1. Therefore, since it is standardized to record
the left and right signals on any track of the magnetic recording tape, any recording can be
compatible and used by any cattle device 0 to correctly record and listen to the threedimensional sound there It is necessary to determine the left and right sides of the micro-phone
7 relative to the direction of the location-generated sound. In general, a microphone with a cord
can freely move the position of the microphone and can be installed without any problems, but in
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the case of a small, portable magnetic recording and reproducing apparatus as shown in FIG. It is
impossible to remove and move the microphone, and use another microphone when it is
necessary to move it. Since the lower part of such a device is capable of recording and
reproducing one-body three-dimensional sound tube, when playing back, the listeners are
directed to the front with respect to the device, and the sound in the left direction from the
speaker 2L It is normal to listen to the sound of
Further, in the case of receiving an FM stereo broadcast, the stereo signal is processed in the
same manner as in 1, and the left and right sounds are made to be 1 from the speakers 2L and
ffR, respectively. For this purpose, the operation buttons and the like are usually provided so as
to be easy to operate toward the listener. The left and right microphones IL and JR are also
directed to the listening side, and in the case of recording, the microphones should be set so that
the bottom of the cutting device is directed to the sound source direction K. 2) The sound from
the microphone to the left is 7 ° ′ ′ return “C”. Oh, R ,, right direction. Sound, equipment. It
is introduced as 4.745 ''-2d. When recording in such an arrangement, it is necessary to operate
the operation buttons from the back side of the operator company operating the magnetic
recording and reproducing apparatus 1) Wll face is included, and one more method is to use the
operator Is positioned to turn your back against the sound source. In the case of the latter, there
is a disadvantage that the sound source direction is reversed for the operator, and the visual
interest is reduced by half when recording the sound of the moving object. I 噌 艷 ρ j 【【S, ψ!
The present invention has been made in view of such points, and will be detailed in the following
according to the drawings. In the present invention, the left and right microphones IL and 1m
can be rotated so as to be able to rotate from the front to the back of the distortion of the
magnetic recording / reproducing apparatus as shown in FIG. The through holes 5a are provided
from the front to the back, and the microphones IL and JR can be moved inside the through holes
5a so that the sound collection direction of the microphones IL and 7R can be varied. (In FIG. 1,
FIG. 3 and FIG. 3, only the right side L of the left and right microphones IL and 1B) is illustrated.
And when the sound collection direction of the micro 3-phone and the JR directs the front, and
switches the switch 4 interlockingly with the back, the contacts 4L and 4B of this switch are as
shown in FIG. The signals from the left and right microphones L and JR are switched between left
and right. As a result, at the contact position of the switch J in the circuit diagram shown in FIG.
4, the right side signal from the sound source JR and the left signal from the loop are collected
on the front side of the magnetic sound reproducing device p. The left and right signals are
recorded on the defined tracks of the magnetic tape 3 by the respective amplifiers 6L and 6R and
the recording magnetic heads yii and 7g. Also, when the microphones IL and IFL face the back
side, the switch 1 is switched, and the left sound is collected from the microphone JR with
respect to the sound source from the back side of the magnetic-sound reproducing device
distortion and amplified by the amplifier 6R. Then, the magnetic tape 7 is recorded by the
magnetic head 7R on a track of 30 magnetic tapes.
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Also, the right sound of the microphone IL is collected, amplified by the amplifier 6L, and
recorded on a predetermined track of the magnetic tape 3 from the magnetic head 7LK. As
described above, if the microphones 7L and JR are directed in the sound 4-source direction, the
front surfaces of the magnetic recording and reproducing apparatuses are mutually connected.
Since the left and right sounds are correctly recorded on the predetermined track of the magnetic
tape 3 regardless of the back surface, even if this magnetic tape 3 is reproduced by another
reproduction device, the sound source relationship is correct and the signal is reproduced by the
reproduction magnetic head & L, 8R. The signals are amplified by the amplifiers 9L and 9R, and
reproduced by the speakers 2L and 2R. Furthermore, since the operator can face the sound
source direction and can record the sound from the back toward the front even with the
distortion of the magnetic recording and reproducing device, the operator recorded while
listening to the performance while going to the swage in the performance hall 9 It is very
effective when recording moving objects. ), 'L' · Y (aa *> IL · 7R17) -j5 tvhfi 91 訃. In the case of
C, since the left and right signals are mixed by the switch f, the same signal is recorded on one
track of the magnetic tape 302 as a monaural signal. In the above description, the microphones
1kL and IL are arranged as shown in the drawing for the sake of clarity, but the opposite case
may be used as long as the left and right signals can be correctly recorded on the predetermined
track of the magnetic tape 3. The switches 4L and 4R are provided in front of the amplifiers 6L
and 6R, but it is a matter of course that the same effect can be obtained even if the stages are
stacked inside the amplifiers 6L and 6R, and the amplifier 6L for recording and reproduction ,
6R, 9L, 9R are separately provided, but of course they may be shared. As described above, the
simple configuration of the present invention produces excellent effects.
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