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JPH02296496

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DESCRIPTION JPH02296496
[0001]
TECHNICAL FIELD The present invention relates to a speaker system installed in a vehicle
interior space. Unlike a conventional speaker system in a conventional technical vehicle cabin,
the place where the speaker apparatus can be installed is limited. Therefore, many of the
conventional speaker devices are installed at the door of the vehicle cabin. SUMMARY OF THE
INVENTION However, in the case of the speaker device installed at the door portion, the sound
image is localized at a height near the foot from the knee. In addition, since the sound quality is
also surrounded by a material with high sound absorbing properties such as a floor and a seat,
the high frequency is particularly likely to be attenuated and the sense of clarity tends to be
impaired. Therefore, the door part is not a very desirable place in terms of acoustic
characteristics as a place for installing the speaker device. The present invention solves the
above-mentioned problems, and it is an object of the present invention to provide an on-vehicle
speaker device having improved sound image localization and sound quality in a vehicle interior
sound field. Means for Solving the Problems In order to solve the above problems, the present
invention is provided with a speaker device in a rearview mirror portion in a vehicle
compartment, and a mechanism capable of adjusting the angle of the speaker unit independently
of the rearview mirror. . According to the above configuration, by providing the speaker device in
the room mirror portion in the vehicle compartment, it is realized that the sound image is
localized in front of the listener in front, and the high frequency characteristic is improved and
the sound quality is clear realizable. EXAMPLES Hereinafter, the first example of the present
invention will be described based on the drawings. FIG. 1 is a top plan view of a cabin provided
with a speaker device according to a first embodiment of the present invention. In FIG. 1, 11 is a
passenger compartment, 12 is a 7-frame mirror of the passenger compartment 11, 13 is a
speaker unit scraped by the μm mirror 12, 14 is a driver's seat, and 16 is a passenger seat. The
operation of the speaker apparatus configured as described above will be described. In a car
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interior sound field, the most desirable position to localize the sound image is in front of the
listener. Therefore, in order to realize such sound image localization, a speaker device is provided
in a part of a room mirror of the vehicle compartment 11, and the room mirror 12 and the
speaker unit 13 are integrated. As a result, the sound image is localized in front of the listener in
front of the driver in both the driver's seat 14 and the assistant driver's seat 16, and there is
almost no member with high sound absorption between the speaker device and the listener.
There is no particular attenuation. Therefore, the present embodiment can be applied to
monaural signals such as AM radio broadcasting. Next, a second embodiment of the present
invention will be described based on the drawings.
FIG. 2 is a top plan view of a passenger compartment provided with a speaker device according
to a second embodiment of the present invention. In FIG. 2, 16 is a front glass and 17 is a side
glass. The operation of the speaker apparatus configured as described above will be described. In
general, a frequency band that determines sound image localization is mainly a high frequency
band of 5 kHz or more, and this band also has sharp directivity characteristics. Therefore, the
speaker unit 13 is a reproduction speaker of high frequency and is provided on the back of the
room mirror 12. However, it is necessary to set the angle of the rearview mirror 12 to an angle
that accurately captures the rear view. Therefore, the mounting of the speaker unit 12 can adjust
the angle of the speaker unit 120 independently of the room mirror 13 by making the part as
shown in FIG. As a result, by utilizing the reflection of the windshield 16 and the side glass 17,
the Lch and Rch paths as shown in FIG. 2 can be realized at high frequencies, the sound image is
localized in front of the listener and the stereo signal is realized. It can be played back. Effects of
the Invention As described above, according to the present invention, by providing the speaker
device in the room mirror portion in the vehicle compartment in the in-vehicle speaker device,
the sound image is localized in front of the listener in front and the high frequency
characteristics Can be realized to achieve clear sound quality.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a top plan view of a cabin provided with a speaker apparatus according to a first
embodiment of the present invention, and FIG. 2 is a top plan view of a cabin provided with a
speaker apparatus according to a second embodiment of the present invention; FIG. 3 is a
schematic side view of the mounting of the speaker unit and the rearview mirror.
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11 ··· Vehicle compartment, 12--Room mirror, 13 · Speaker unit, 14 · · · Driver's seat, 15 · · ·
Passenger seat, 16 · · · Windscreen, 17 · · ·・ Side glass. Name of Agent Patent Attorney 粟 厨 ほ
か Other 1 person 1 c 1 1 隼 1 r 2-m-Room Mira-(3---132 + 1
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