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JPH0730992

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DESCRIPTION JPH0730992
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
magnetic recording and reproducing apparatus capable of freely expanding and contracting a
cord by arbitrarily detaching a so-called microphone with a cord attached to the apparatus main
body.
[0002]
2. Description of the Related Art A so-called camcorder, which is an example of a conventional
magnetic recording and reproducing apparatus, is a built-in microphone (hereinafter referred to
as a microphone). Is fixed, and in order to prevent the influence of the driving sound of the
mechanism system on the microphone, the high-frequency pass filter is incorporated on the
microphone amplifier input side.
[0003]
However, since the above-described conventional example is configured as described above, the
low-frequency component of the voice to be recorded is attenuated along with the vibration noise
of the mechanism, and the fixed microphone is also called In collecting the sound, when the
recorded tape is played back, not only the unnatural sound without the low band is obtained, but
also there is a problem that it is difficult to approach the contrast to collect the sound.
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1
[0004]
The present invention has been made to solve the problems of the prior art as described above,
and at the time of sound collection, the microphone can be pulled out from the main body of the
device and moved to any position suitable for sound collection and held. Another object of the
present invention is to provide a magnetic recording and reproducing apparatus capable of
appropriately converting the filter characteristics of the circuit according to the attachment and
detachment of the microphone.
[0005]
SUMMARY OF THE INVENTION Therefore, in a magnetic recording and reproducing apparatus
according to the present invention, the magnetic recording and reproducing apparatus having a
built-in sound collector comprises: A cord winding means for retractably retracting the cord of
the storage device, and a locking means for releasably locking the sound collector, and in
addition to that, the mounting and dismounting of the sound collector from the device main body
In conjunction with the above, circuit switching means for switching the amplifier circuit is
provided, and the amplifier circuit is intended to achieve the above-mentioned object by
providing filter circuits of different characteristics switched by the circuit switching means. is
there.
[0006]
In the magnetic recording and reproducing apparatus according to the present invention as
described above, the sound collector is arbitrarily attached to and detached from the apparatus
main body by the locking means of the sound collector and the cord winding means. In addition
to this, the filter circuit of the amplifier circuit is switched in synchronization with the attachment
/ detachment of the sound collector, and the filter characteristic of the circuit is made possible. Is
in an optimal state, so it is possible to always record with more natural speech.
[0007]
DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will
be described below with reference to the drawings.
(Arrangement) FIG. 1 is an explanatory view of the main configuration of a magnetic recording
and reproducing apparatus according to an embodiment of the present invention.
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2
[0008]
In FIG. 1, 1 is a built-in corded microphone (hereinafter referred to as a microphone), 1a is a cord
to which the microphone 1 is connected, 2 is a winding drum constituting the cord winding
means A of the microphone 1, 3a is 5 is a switch button of a changeover switch 3 having
contacts a and b constituting circuit switching means B for switching the amplifier circuit 6 in
accordance with the attachment and detachment of the microphone 1 from the device body 10; A
grip portion of the microphone 1 constituting a locking means C for detachably locking the
microphone 1 to the microphone housing portion 4 of the apparatus main body 10, and the grip
portion 5 engages with the locking projection 4a of the microphone housing portion 4. In
addition, the microphone 1 is detachably locked to the apparatus main body 10, and the
extracted microphone 1 is held at a desired position.
A high pass filter (hereinafter referred to as a filter) 6a is incorporated in one of the circuits of
the filter circuit 6.
, And the filter characteristics of the circuit are converted by the filter 6a in accordance with the
attachment / detachment of the microphone 1.
Reference numeral 7 denotes a microphone amplifier, and an amplifier circuit D is configured by
the changeover switch 3, the filter circuit 6, and the microphone amplifier 7.
[0009]
(Operation) The operation will be described based on the above configuration. First, the cord 1 a
is wound around the winding drum 2 in a state in which the microphone 1 is usually attached to
the main body 10. At this time, the switch button 3a is pushed by the microphone 1 and the
switch 3 is switched to a position passing through the filter 6a of the filter circuit 6 inside the
amplifier circuit D, that is, the contact a. Next, when the microphone 1 is removed from the main
body 10 and taken out, the winding drum 2 is rotated and the cord 1a is drawn out. At this time,
the switch button 3a is moved upward, the contact point of the switch 3 is switched to b, and the
amplifier circuit D is connected so as to bypass the filter 6a of the filter circuit 6.
[0010]
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As a result, by pulling out the microphone 1 from the apparatus main body 10, not only can the
influence of vibration of the mechanism system be eliminated but also the amplifier circuit 6 is
switched from the filter circuit to the bypass circuit at the same time as removing the
microphone 1 It can be recorded as a more natural voice. In addition, since the approach of the
microphone to the sound source is extremely easy, and the grip portion of the microphone has a
shape that allows the objects to be pinched, the microphone 1 can be fixed and held at the
position where the sound collection is desired.
[0011]
In this embodiment, although the example using the corded microphone has been described, the
present invention is not limited to this, and the microphone may be a wireless microphone which
can be attached to and detached from the apparatus main body.
[0012]
Further, although the filter circuit constituting the amplifier circuit is constituted by the high
pass filter circuit and the bypass circuit, the present invention is not limited to this, and filters
having different filter characteristics may be arranged in the filter circuit.
[0013]
As described above, according to the present invention, the corded sound collector is detachably
disposed on the main body of the apparatus, and the amplifier circuit of the amplifier circuit is
interlocked with the attachment and detachment with the main body of the sound collector. Since
the filter characteristics are switched, it is possible not only to eliminate the influence on the
sound collection by the vibration of the mechanism system by pulling out the sound collector
from the device main body, but also when removing the sound collector from the device main
body Since the filter characteristics of the amplifier circuit are switched in conjunction with the
above, it is possible to record more natural voice, and further, the freedom of selection of the
sound collecting position is increased, and the approach to the sound source becomes easy.
This makes it possible to easily perform recording with very high sound quality.
[0014]
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Brief description of the drawings
[0015]
FIG. 1 is an explanatory view of the main configuration of a magnetic recording and reproducing
apparatus according to an embodiment of the present invention.
[0016]
Explanation of sign
[0017]
1 Sound collector with cord 10 Device body A Cord winding means B Circuit switching means C
Locking means D Amplifier circuit
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