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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
microphone used in connection with an acoustic device having a microphone mixing function.
2. Description of the Related Art A conventional microphone is, for example, a running tape
recorder as described in "Hi-Fi Tape Recorder" (full collection of radio technology Vol. 16 1969),
published by Radio Technology Inc. There was only one with ON, OFF control switch.
Therefore, when using the microphone mixing function of an audio device such as karaoke, there
is the inconvenience that it is necessary to approach the main device in order to control the main
device at the time of operations such as increase and decrease of volume and music selection.
SUMMARY OF THE INVENTION It is an object of the present invention to easily control a main
device with a microphone without approaching the main device.
SUMMARY OF THE INVENTION In order to solve the problems, the present invention provides a
microphone with buttons and a circuit for controlling a main device.
The microphone not only sends an audio signal to the main device but also generates a signal for
controlling the main device to control the main device.
FIG. 1 is a system diagram of an embodiment of the present invention.
Hereinafter, description will be made with reference to FIG.
Here, the case where a microphone according to an embodiment of the present invention is
connected to a magnetic tape reproduction type karaoke apparatus will be described.
The audio signal output from the acoustoelectric conversion element 31 provided in the
microphone 3 is amplified by the audio amplifier 4, sent to the main body 2, amplified, and
output to the speaker 1.
On the other hand, the signal from the reproducing head 8 is amplified by the reproducing
amplifier 9, then amplified by the main amplifier 5, and output to the speaker 1.
The magnetic tape is driven by a tape travel motor 13.
The microprocessor 7 detects a change in resistance value as a voltage value due to the
operation of the switch 6 or the like attached to the microphone 3 and determines the operation
The microprocessor 7 sends control signals of increase and decrease to the mix volume 10 and
the main volume 11 in accordance with the determined operation item to control the mixing
amount and the volume.
Similarly, the microprocessor 7 sends control signals to the key control 12 and the tape traveling
motor 13 in accordance with the determined operation items to control the key control and the
reproduction speed of the tape.
By configuring in this way, control of the main body 2 can be performed simply by holding the
microphone 3 in hand.
In the above description, the microphone and the main device are connected by wire, but it is
needless to say that the same effect can be obtained even by the wireless method.
As described above, according to the present invention, the main device can be easily controlled
by the microphone without approaching the main device.