JP4097735B2 - Speaker device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a speaker device used as a means for compensating for a hearing loss of a hearing impaired person such as an elderly person in combination with a television receiver (hereinafter referred to as a television).
[0002]
[Prior art]
In recent years, the aging of society is rapidly progressing. However, hearing-impaired people such as elderly people generally suffer from a decrease in hearing ability. Or, when watching TV with a family member of normal hearing, Fig. 5 (Graph of decrease in high-frequency sensitivity in hearing by age (Makita, “Modern Acoustics” (Ohm, 1978, page 48)). As you can see from the above, the average high-frequency level is lower by 10 to 20 dB in the elderly compared to the normal hearing person. To make it easier to hear, increase the volume or rely on earphones. There was a need.
[0003]
[Problems to be solved by the invention]
As mentioned above, when the volume is increased to a level that is easy for elderly people to hear, the sound spreads omnidirectionally with a general TV built-in speaker. As can be seen from FIG. 5, the sound is heard by 10 to 20 dB louder than the appropriate level, and the sound volume is too high.
[0004]
In addition, when the built-in speaker does not turn off, that is, when using the earphone jack that can sound both the built-in speaker and the earphone at the same time, only the hearing impaired person uses the earphone, and the normal hearing person views with the built-in speaker at an appropriate volume The sound volume is appropriate and comfortable for a normal hearing person, but for a hearing impaired person, wearing an earphone makes it feel closed and is often not preferred.
[0005]
As described above, when a hearing-impaired person and a normal hearing person enjoy viewing and enjoying TV at the same time, it has been difficult for both of them to be satisfied and to enjoy comfortably because of hearing loss.
[0006]
The present invention solves the above-described problems, and provides a speaker device that allows natural viewing without using an earphone or the like when both an elderly hearing impaired person and a normal hearing person view simultaneously. Is.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a speaker device of the present invention includes a first amplifier to which at least an audio signal is input, a first speaker for a normal hearing person to which the output of the first amplifier is input, and approximately 1 KHz or more. This is composed of a driving amplifier to which the sound signal having the sound pressure frequency characteristic with an increased level of the high frequency range is input, and a directional speaker for the deaf person to which the driving amplifier output is input. The directional speaker for the hearing impaired is a directional speaker that can be rotated and adjusted so that the reproduced sound is attenuated at the position of the normal hearing person so that the normal hearing person does not care. who is one that can hear the reproduced sound satisfactory with hearing loss without able to hear the corrected reproduced sound from the directional loudspeaker can also hearing people suffer in directional speaker for deaf
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the speaker device of the present invention includes a first amplifier to which at least an audio signal is input, a first speaker for a normal hearing person to which the first amplifier output is input, and approximately 1 KHz. It is composed of a driving amplifier to which the sound signal having the sound pressure frequency characteristic with the increased level in the above high frequency range is input, and a directional speaker for the hearing impaired to which the driving amplifier output is input. A hearing-impaired person such as a listener hears a reproduction sound corrected by a directional speaker directed at the hearing-impaired person, and a normal hearing person hears a normal reproduction sound from the first speaker. In addition to being able to hear a satisfactory reproduced sound, the directional speaker for the hearing impaired person is adjusted so that the reproduced sound is attenuated at the position of the hearing person so that the hearing person does not care. What can be rotated Since the is obtained by allowing arbitrarily easily rotated changing the sound emission direction of the corrected reproduced sounds directional speaker to be less affected by the hearing person.
[0011]
The invention according to claim 2 of the speaker device of the present invention is such that the directivity in the vertical direction of the directional speaker according to claim 1 is set wider than the directivity in the horizontal direction, and the height direction of the listener This facilitates the adjustment of the direction of the directional speaker with respect to the position (such as the height of the back).
[0015]
Hereinafter, an embodiment of a speaker device according to the present invention will be described with reference to FIGS.
[0016]
FIG. 1 is a perspective view of an embodiment of the speaker device of the present invention, FIG. 2 is an explanatory diagram of the same rotation state, and FIG. 3 is a directivity characteristic diagram at each rotation angle of FIG. According to the figure, 1 is a directional speaker, 2 is a driving amplifier with a high-frequency correction circuit in which an output for amplifying an audible frequency of 1 KHz or more is connected to the directional speaker 1, and a normal first amplifier And a main body including a normal first speaker connected to the normal first amplifier.
[0017]
3 is a knob for adjusting the output of a driving amplifier with a high-frequency correction circuit or a normal first amplifier, and 4 is a rotating shaft that serves as a rotating means of the directional speaker 1.
[0018]
Next, the operation of the speaker device will be described. An externally input audio signal is amplified by a normal first amplifier and emitted from a normal first speaker. In addition, the audio signal is amplified by a high frequency correction so as to supplement the hearing ability of a deaf person such as an elderly person by amplifying an audible frequency of 1 KHz or higher than the output of the first amplifier by the driving amplifier with a high frequency correction circuit, Sound is emitted from the directional speaker 1.
[0019]
The directional speaker 1 is appropriately rotated and adjusted by the rotation shaft 4 as in the rotation positions 21 to 23.
[0020]
FIG. 3 shows the directivity characteristics, and shows the sound pressure frequency characteristics at a position 1 m from the rotation axis 4 when the front axis of the rotation axis 4 is 0 ° and rotated by 30 ° and 60 °. For example, 2 kHz sound at 30 ° is attenuated by about 15 dB, and high-frequency corrected sound for the deaf person is attenuated to a level that is hardly noticeable by changing the position of the normal hearing person. You can listen to the playback sound that can be played.
[0021]
The directivity in the vertical direction of the directional speaker 1 is set wider than that in the horizontal direction. As a result, even if the position of the listener in the height direction varies somewhat, adjustment of the height direction of the directional speaker becomes unnecessary, and the position adjustment of the directional speaker 1 is extremely easy.
[0022]
If the normal first amplifier built in the main body 2 can be amplified in the low sound range (for example, about 100 Hz) and the normal first speaker can reproduce low sound, the speaker device can be used only by a hearing impaired person. Therefore, it is possible for a normal hearing person to provide a speaker device that is more suitable for reproducing music or the like as a speaker device.
[0023]
Further, by providing a known delay circuit in the driving amplifier with a high-frequency correction circuit built in the main body 2, even if the directional speaker 1 is limited to the monaural use of only one unit, it can be obtained by the delay circuit. It is also possible to provide a speaker device that can obtain a sense of spaciousness and depth by mixing the obtained audio signals.
[0024]
In addition, if the driving amplifier with a high frequency correction circuit built in the main body 2 is provided with an output variable means and a variable means for the sound pressure frequency characteristic, it is adjusted to the sound pressure frequency characteristic that is best heard by the listener. Then, since it can output from the directional speaker 1, the listener can enjoy a more comfortable reproduction sound.
[0025]
FIG. 4 is an application development example of the above embodiment, 31 is a television receiver, and 32 is a high frequency band connected to an audio output terminal (for example, an earphone terminal or the like—not shown) of the television receiver 31. A speaker device including a main body having a driving amplifier with a correction circuit and a directional speaker, 35 indicates a range of signal sound emitted from the speaker device 32 with a narrow directivity, and 36 indicates a range of the television receiver 31. The range of the signal sound emitted with a wide directivity is shown.
[0026]
Reference numeral 33 denotes a normal hearing person and 34 denotes a hearing impaired person such as an elderly person.
According to the above configuration, the normal hearing person 33 is outside the range of the reproduction sound from the speaker device 32 (the reproduction sound that has been attenuated is extremely attenuated, but is attenuated so as not to bother). The user can comfortably view both programs by appropriately adjusting the volume or sound pressure frequency characteristics of the speaker device 32 as described above. At this time, if the sound output direction, output (volume), and sound pressure frequency characteristics of the directional speaker are adjusted at the listening position by a known remote control device, the adjustment accuracy and complexity can be released. .
[0027]
In the above application development example, the television receiver 31 has been described. However, a stereo or the like may be used, and it can be used for any audiovisual apparatus.
[0028]
【The invention's effect】
As described above, the present invention uses a driving amplifier having a sound pressure frequency characteristic in which the level of a high sound range is increased , a directional speaker for a hearing impaired person, a normal amplifier, and a normal speaker for a normal hearing person. A hearing-impaired person such as a normal person can hear the reproduced sound corrected from the directional speaker, and both the normal hearing person and the hard-of-hearing person can hear a satisfactory reproduced sound.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of a speaker device of the present invention. FIG. 2 is an explanatory diagram of the same rotation state. FIG. 3 is a directivity characteristic diagram at each rotation angle of FIG. Conceptual diagram of an application development example of the device [Fig. 5] Audience characteristic diagram by age [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Directional speaker 2 Main body 3 Knob 4 Rotating shaft 31 Television receiver 32 Speaker apparatus

Claims (2)

At least a first amplifier to which an audio signal is input, a first speaker for a normal hearing person to which the output of the first amplifier is input, and a sound pressure frequency characteristic with an increased level of a high frequency range of approximately 1 KHz or higher. A speaker device including a driving amplifier to which the audio signal is input and a directional speaker for a hearing impaired person to which the output of the driving amplifier is input, the directional speaker for the hearing impaired A speaker device that is a directional speaker that can be rotationally adjusted so that a reproduced sound is attenuated at a position of the normal hearing person so that the normal hearing person does not care . The speaker device according to claim 1, wherein the directivity in the vertical direction of the directional speaker is set wider than the directivity in the horizontal direction based on variations in the height direction of the listener.

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