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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram of a microphone according to
the present invention, and FIG. 2 is a circuit diagram of FIG.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microphone
used for on-the-air broadcasting-in general, a specific on-site V (in particular a large number of
people (. First of all, it has been practiced to broadcast the melody to chime etc. to alert the
listener. Conventionally, the loudspeakers used for this application are bellow tones of a melody
with a mechanical chime that generates the 1-, 1--1 Qi / n l-σJ Meroti. An amplification device is
used which separately requires a reproduction device or electronic equipment which is a
personal computer, or which incorporates these devices. However, this equipment has a large
equipment such as a department store, and the equipment cost required for the chime is not a
problem especially when there is much use S degree, but small-scale loud-speaking load and
temporary extra Loudspeakers using VC; devices have considerable cost-intensive disadvantages
to include ringing melodies. The present invention has been made in order to solve such a
drawback. Therefore, the present invention provides a microphone phone which can be called up
and inserted using a common amplifier having no chime function. Detailed description will be
made below with reference to the drawings. FIG. 1 is a circuit diagram of the .sigma.-microphone
of the present invention, 11 microphone / body, 2 is an im signal generator circuit, 6 is a switch,
and 4 is a connecting terminal to an amplifier. FIG. 2 is a detail view of FIG. 1; 5 is a pressure
switch 2-4, 6 is a battery, and 7 is an indicator light. The chime signal generation circuit 2 of 2 is
a known signal generator that continuously generates sounds of 5 frequencies at intervals of
about 05 seconds. When the broadcaster broadcasts, when the push button switch 5 is pressed,
the microphone which is always disconnected from the amplifier is connected to the amplifier,
and the battery 6 is connected to the chime signal generating circuit to generate a chime signal.
When a chime signal is generated, this signal is connected to the chime signal side of the switch,
so the chime signal is input to the amplifier via the push button switch while the indicator light 7
is turned off and the microphone is disconnected. Are marked. When the chime signal has been
sent out, the switch returns to the microphone side, and the indicator light turns on to be ready
for transmission. When the transmission is completed and the push button switch is released, the
microphone is disconnected and the chime signal generation circuit is also powered off at the
same time. In this embodiment, although the power supply of the chime signal generation circuit
uses a battery, You may take power supply 1-more-.
By using the above microphones, it is possible to add a chime function even before using the
amplifier even if it has a chime function. In particular, it is effective.