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JP2002176688

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DESCRIPTION JP2002176688
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
audio output device provided with a panel type speaker, and more particularly to an audio output
device capable of suppressing howling.
[0002]
2. Description of the Related Art Conventionally, an audio output device provided with a cone
type speaker and a horn type speaker is known.
[0003]
In FIG. 7, when voice is input to the external microphone 990, the microphone 990 generates a
voice signal according to the input voice, and outputs the generated voice signal to the input
terminal 910 of the voice output device 900.
When an audio signal is output to the input terminal 910, the audio signal is input through the
input terminal 910, amplified by the amplifier 920, and then output to the cone speaker 930.
The cone-type speaker 930 converts the sound signal from the amplifier 920 into sound and
outputs the sound. Here, the input terminal 910, the amplifier 920, and the cone-shaped speaker
930 are housed inside the housing 940.
11-05-2019
1
[0004]
The voice output device 900 may be used in a form as shown in FIG. In FIG. 8, the user of the
audio output device 900 displays information related to the information to be displayed with the
microphone 990 and the audio output device 900 while displaying the information by attaching
a display such as a poster to the display plate 950 or the like. It can be transmitted by voice that
has been loudened by using.
[0005]
However, in the above-mentioned conventional voice output apparatus, when information is
displayed, when information related to the information to be displayed is delivered by voice, the
voice output apparatus is provided separately from the space for displaying the information.
There is a problem that a space for installing itself is required.
[0006]
Therefore, an object of the present invention is to provide an audio output device capable of
transmitting information related to information to be displayed by voice while displaying
information in a smaller space than in the prior art.
[0007]
SUMMARY OF THE INVENTION In order to solve the above problems, an audio output device
comprises an amplifying means for amplifying an input audio signal, and information displayed
on the front side and the audio amplified by the amplifying means. A panel type speaker for
converting a signal into voice and outputting it, a howling suppressing means for suppressing
howling, and a casing for housing the amplification means, the panel type speaker and the
howling suppressing means inside. It is said that.
With this configuration, the audio output device of the present invention can display information
using a panel of a panel type speaker, and can display information while displaying the
information in a smaller space compared to the prior art. It is possible to convey relevant
information by voice.
11-05-2019
2
In the present specification, a panel type speaker refers to a speaker capable of outputting sound
by vibrating a panel as a diaphragm. In addition, as shown in FIG. 9, it is known that the panel
type speaker is different from the cone type speaker and the horn type speaker in that the
directivity characteristic is substantially uniformly wide from the low band to the high band.
Therefore, an audio output device simply having a panel type speaker has a problem that
howling tends to occur if a microphone is used in the vicinity, and while displaying information,
it is not suitable for conveying information related to the information to be displayed by audio. .
However, since the audio output device of the present invention also includes the howling
suppression means for suppressing howling in the inside of the housing, it is possible to prevent
the occurrence of howling even if a microphone is used in the vicinity. It is possible to convey
information related to the information to be displayed by better quality voice while displaying
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present
invention will be described below with reference to the drawings. First Embodiment
[0009]
First, the configuration of the audio output device according to the present embodiment will be
described.
[0010]
In FIG. 1, an audio output device 100 includes an input terminal 110 for inputting an audio
signal, an amplifier 120 as amplification means for amplifying an audio signal input through the
input terminal 110, and an audio signal amplified by the amplifier 120 as audio. A panel-type
speaker 130 for converting into data and outputting it, a howling suppressor 140 as a howling
suppressing means for suppressing howling, a housing 150 for housing the input terminal 110,
the amplifier 120, the panel type speaker 130 and the howling suppressor 140 Is equipped.
[0011]
Here, howling suppressor 140 is configured to suppress howling by setting a notch filter that
removes only narrow frequencies at the frequency at which howling occurred.
11-05-2019
3
Also, the input terminal 110 is connected to the microphone 200 via the cord 210.
Further, as shown in FIG. 2, the panel-type speaker 130 includes a panel 131 which can use a
front surface as a space for displaying information, and an exciter 132 which vibrates the panel
131.
[0012]
Next, the operation and effect of the audio output device according to the present embodiment
will be described.
[0013]
In FIG. 1 and FIG. 2, when an audio is input to the external microphone 200, the microphone 200
generates an audio signal according to the input audio, and the audio signal generated through
the code 210 is output from the audio output device 100. Output to the input terminal 110.
When an audio signal is output to the input terminal 110, the audio signal is input through the
input terminal 110, and then howling is suppressed by the howling suppressor 140. The audio
signal whose howling is suppressed is amplified by the amplifier 120 and then output to the
panel speaker 130. The panel-type speaker 130 causes the exciter 132 to vibrate the panel 131
according to the audio signal from the amplifier 120, thereby converting the audio signal from
the amplifier 120 into audio and outputting it.
[0014]
The audio output device 100 is suitable for being used in the form as shown in FIG. In FIG. 3, the
user of the audio output device 100 displays information related to the information to be
displayed with the microphone 200 and the audio output device 100 while displaying the
information by attaching a display such as a poster to the front of the panel 131. It can be
transmitted by voice that has been loudened by using. Therefore, the audio output device 100
can display information using the front surface of the panel 131 of the panel type speaker 130,
and can display information while displaying the information in a smaller space as compared
with the conventional case. It is possible to convey relevant information by voice.
11-05-2019
4
[0015]
Further, since the audio output device 100 is provided with the howling suppressor 140 for
suppressing howling inside the housing 150, it is possible to prevent the occurrence of howling
even when using the microphone 200 in the vicinity, While displaying, it is possible to convey
information related to the information to be displayed by better quality voice. Second
Embodiment
[0016]
First, the configuration of the audio output device according to the present embodiment will be
described.
[0017]
In FIG. 4, an audio output device 300 includes an antenna 311 and a tuner 312 for inputting an
audio signal by receiving an audio signal, and an amplifier 320 as amplification means for
amplifying an audio signal received by the antenna 311 and the tuner 312. A panel type speaker
330 for converting an audio signal amplified by the amplifier 320 into a sound and outputting
the sound, a howling suppressor 340 as a howling suppressing means for suppressing howling,
an antenna 311, a tuner 312, an amplifier 320 and a panel type speaker 330 And a housing 350
for housing the howling suppressor 340 therein.
[0018]
Here, howling suppressor 340 is configured to suppress howling by setting a notch filter that
removes only narrow frequencies at the frequency where howling occurred.
Also, the antenna 311 and the tuner 312 are configured to receive the audio signal transmitted
from the microphone 400.
Further, as shown in FIG. 5, the panel-type speaker 330 includes a panel 331 which can use the
front surface as a space for displaying information, and an exciter 332 which vibrates the panel
331.
11-05-2019
5
[0019]
Next, the operation and effect of the audio output device according to the present embodiment
will be described.
[0020]
In FIG. 4 and FIG. 5, when voice is input to the external microphone 400, the microphone 400
generates a voice signal according to the input voice, and the generated voice signal is
transmitted to the antenna 311 and the tuner 312 of the voice output device 300. Send to
When an audio signal is transmitted to the antenna 311 and the tuner 312, the audio signal is
received by the antenna 311 and the tuner 312, and then the howling is suppressed by the
howling suppressor 340. The audio signal whose howling is suppressed is amplified by the
amplifier 320 and then output to the panel speaker 330. The panel-type speaker 330 causes the
exciter 332 to vibrate the panel 331 according to the audio signal from the amplifier 320,
thereby converting the audio signal from the amplifier 320 into audio and outputting it.
[0021]
The audio output device 300 is suitable for being used in the form as shown in FIG. In FIG. 6, the
user of the audio output device 300 displays information related to the information to be
displayed with the microphone 400 and the audio output device 300 while displaying the
information by attaching a display such as a poster to the front of the panel 331. It can be
transmitted by voice that has been loudened by using. Therefore, the audio output device 300
can display information using the front surface of the panel 331 of the panel type speaker 330,
and can display information while displaying the information in a smaller space as compared
with the conventional case. It is possible to convey relevant information by voice.
[0022]
Further, since the audio output device 300 is provided with the howling suppressor 340 for
suppressing howling inside the housing 350, it is possible to prevent the occurrence of howling
even if the microphone 400 is used in the vicinity, While displaying, it is possible to convey
information related to the information to be displayed by better quality voice.
11-05-2019
6
[0023]
As described above, according to the present invention, it is possible to convey information
related to information to be displayed by voice while displaying information in a smaller space
than in the prior art. An apparatus can be provided.
11-05-2019
7
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