JP2002176688A - Sound output device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound output device having a space smaller than that of conventional device, that can deliver information relating to displayed information in voice, while displaying the information. SOLUTION: The sound output device 100 is provided with an input terminal 110 that is used to receive a sound signal, an amplifier 120 that amplifies the sound signal received at the input terminal 110, a panel loud speaker 130 that transduces the sound signal amplified by the amplifier 120 into sound and outputs it, a howling suppressor 140 that suppresses howling, and an enclosure 150 that houses the input terminal 110, the amplifier 120, the panel loud speaker 130 and the howling suppressor 140 in the inside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio output device having 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 or a horn type speaker has been known.

In FIG. 7, an external microphone 990 is provided.
Is input to the microphone 990, the microphone 990 generates an audio signal according to the input audio, and outputs the generated audio signal to the input terminal 910 of the audio 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 output to the cone-type speaker 930.
The cone type speaker 930 converts a sound signal from the amplifier 920 into sound and outputs the sound. Here, the input terminal 91
0, the amplifier 920, and the cone type speaker 930 are housed inside the housing 940.

[0004] In some cases, the audio output device 900 is used in a form as shown in FIG. In FIG.
The user of the sound output device 900 displays information such as a poster on a display panel 950 or the like while displaying information, and transmits information related to the displayed information to the microphone 9.
90 and the voice output device 900 can be used to convey the voice.

[0005]

However, in the above-described conventional audio output device, when information related to the information to be displayed is transmitted by audio while displaying the information, the audio output device is provided separately from the space for displaying the information. There was a problem that a space for installing itself was necessary.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an audio output device capable of transmitting information related to information to be displayed by voice while displaying information in a small space as compared with the related art. I do.

[0007]

In order to solve the above-mentioned problems, an audio output device comprises an amplifying means for amplifying an input audio signal, an information display on the front side, and the audio amplified by the amplifying means. A panel-type speaker that converts a signal into sound and outputs the signal, a howling suppression unit that suppresses howling, and a housing that houses the amplification unit, the panel-type speaker, and the howling suppression unit therein. It is assumed that. With this configuration,
The audio output device of the present invention can display information using a panel of a panel-type speaker, and displays information related to the information to be displayed while displaying the information in a small space as compared with the related art. It is possible to convey by voice. In this specification, a panel-type speaker refers to a speaker that can output sound by vibrating a panel as a diaphragm. It is known that, as shown in FIG. 9, the panel type speaker has a substantially uniform directional characteristic from a low band to a high band, unlike a cone type speaker or a horn type speaker. Therefore, an audio output device simply provided with a panel-type speaker has a problem that howling easily occurs when a microphone is used in the vicinity, and is not suitable for transmitting information related to information to be displayed by voice while displaying information. .
However, since the audio output device of the present invention also includes the howling suppressing means for suppressing howling inside the housing, it is possible to prevent the occurrence of howling even when a microphone is used in the vicinity. , It is possible to convey information related to the information to be displayed by higher quality voice.

[0008]

[First Embodiment]

First, the configuration of the audio output device according to the present embodiment will be described.

In FIG. 1, an audio output device 100 includes an input terminal 110 for inputting an audio signal, an amplifier 120 as amplifying means for amplifying the audio signal input from the input terminal 110, and an audio signal amplified by the amplifier 120. Panel-type speaker 130 that converts a signal into sound and outputs the sound
And a howling suppressor 140 as howling suppressing means for suppressing howling, and a housing 150 that houses the input terminal 110, the amplifier 120, the panel-type speaker 130, and the howling suppressor 140 therein.

Here, the howling suppressor 140 is
Howling is suppressed by setting a notch filter that removes only a narrow frequency at the frequency where howling occurs. The input terminal 110 is
It 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 whose front surface can be used as a space for displaying information, and an exciter 132 that vibrates the panel 131.

Next, the operation and effect of the audio output device according to this embodiment will be described.

In FIG. 1 and FIG. 2, when a voice is input to an external microphone 200, the microphone 200 generates a voice signal in accordance with the input voice.
0 is output to the input terminal 110 of the audio output device 100. When the audio signal is output to the input terminal 110, the audio signal is input by the input terminal 110 and then howling is suppressed by the howling suppressor 140. The audio signal in which the howling is suppressed is amplified by the amplifier 120 and then output to the panel speaker 130. The panel type speaker 130 is
Exciter 132 according to the audio signal from amplifier 120
By vibrating the panel 131 to the
The audio signal from 0 is converted into audio and output.

The audio output device 100 is suitable for being used in a form as shown in FIG. In FIG. 3, the user of the audio output device 100 displays information by pasting a display object such as a poster on the front surface of the panel 131, and transmits information related to the displayed information to the microphone 200 and the audio output device 100. It can be conveyed by using the loudspeaker. Therefore, the audio output device 100 is connected to the panel 13 of the panel type speaker 130.
It is possible to display information using the front of
It is possible to convey information related to the information to be displayed by voice while displaying the information in a small space as compared with the related art.

Further, since the audio output device 100 includes the howling suppressor 140 for suppressing howling in the housing 150, it is possible to prevent the occurrence of howling even when the microphone 200 is used in the vicinity. While displaying the information, it is possible to convey information related to the information to be displayed by higher quality voice. [Second embodiment]

First, the configuration of the audio output device according to the present embodiment will be described.

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 amplification means for amplifying the audio signal received by the antenna 311 and the tuner 312. An amplifier 320, a panel-type speaker 330 that converts an audio signal amplified by the amplifier 320 into audio and outputs the audio, a howling suppressor 340 as a howling suppressing unit that suppresses howling, an antenna 311, a tuner 312, an amplifier 320, and a panel. And a housing 350 that houses the type speaker 330 and the howling suppressor 340 therein.

Here, howling suppressor 340 is
Howling is suppressed by setting a notch filter that removes only a narrow frequency at the frequency where howling occurs. Further, the antenna 311 and the tuner 312 receive an audio signal transmitted from the microphone 400. As shown in FIG. 5, the panel type speaker 330 has a panel 331 whose front surface can be used as a space for displaying information.
And an exciter 332 for vibrating the panel 331.

Next, the operation and effect of the audio output device according to the present embodiment will be described.

4 and 5, when a voice is input to an external microphone 400, the microphone 400 generates a voice signal in accordance with the input voice, and outputs the generated voice signal to the antenna 311 of the voice output device 300. And the tuner 312. Antenna 311 and tuner 3
When the audio signal is transmitted to the antenna 12, the audio signal is received by the antenna 311 and the tuner 312, and then howling is suppressed by the howling suppressor 340. The howling-suppressed audio signal is supplied to the amplifier 320
After being amplified by the panel type speaker 330. The panel speaker 330 converts the audio signal from the amplifier 320 into audio and outputs the audio by causing the exciter 332 to vibrate the panel 331 according to the audio signal from the amplifier 320.

The audio output device 300 is suitable for being used in a form as shown in FIG. In FIG. 6, the user of the audio output device 300 displays information by pasting a display object such as a poster on the front surface of the panel 331, and transmits information related to the displayed information to the microphone 400 and the audio output device 300. It can be conveyed by using the loudspeaker. Therefore, the audio output device 300 is connected to the panel 33 of the panel type speaker 330.
It is possible to display information using the front of
It is possible to convey information related to the information to be displayed by voice while displaying the information in a small space as compared with the related art.

Further, since the audio output device 300 includes the howling suppressor 340 for suppressing howling inside the housing 350, it is possible to prevent the occurrence of howling even when the microphone 400 is used in the vicinity. While displaying the information, it is possible to convey information related to the information to be displayed by higher quality voice.

[0023]

As described above, according to the present invention,
It is possible to provide an audio output device capable of transmitting information related to information to be displayed by voice while displaying information in a small space as compared with the related art.

[Brief description of the drawings]

FIG. 1 is a block diagram of an audio output device according to a first embodiment of the present invention.

FIG. 2 is an external perspective view of the audio output device shown in FIG.

FIG. 3 is a front view showing a usage form of the audio output device shown in FIG. 1;

FIG. 4 is a block diagram of an audio output device according to a second embodiment of the present invention.

5 is an external perspective view of the audio output device shown in FIG.

FIG. 6 is a front view showing a usage form of the audio output device shown in FIG. 4;

FIG. 7 is a block diagram of a conventional audio output device.

FIG. 8 is a front view showing a usage form of the audio output device shown in FIG. 7;

FIG. 9 is a diagram showing directional characteristics of a cone type speaker, a horn type speaker, and a panel type speaker in a horizontal direction.

[Explanation of symbols]

120, 320 Amplifier (amplifying means) 130, 330 Panel-type speaker 140, 340 Howling suppressor (howling suppressing means) 150, 350 Housing 100, 300 Audio output device

Claims (1)

[Claims] Amplifying means for amplifying an input audio signal; a panel-type speaker for displaying information on a front surface and converting the audio signal amplified by the amplifying means into audio and outputting the audio; An audio output device, comprising: a howling suppressing unit that performs the feedback control; and a housing that houses the amplifying unit, the panel-type speaker, and the howling suppressing unit.