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JP2000115878

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DESCRIPTION JP2000115878
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker device for home use, car use and the like.
[0002]
2. Description of the Related Art Baffle plates in conventional speaker devices are made of
various materials such as metal, synthetic resin, wood and the like, depending on the use
environment of the speaker device, etc., and are configured in various sizes. Moreover, regarding
the shape, although the thing of a rectangular shape and the thing very similar to the shape of
the mounting place in the case of vehicle-mounted use were most, the form was various.
[0003]
SUMMARY OF THE INVENTION However, conventionally, there has been no speaker device
provided with a baffle plate which historically has both an acoustic effect as well as a musical
appearance.
[0004]
According to the present invention, therefore, a tweeter is provided in the vicinity of a high
resonance point of an intermediate body of a baffle plate in which two sounding bodies having
different resonance frequencies are combined, A woofer is provided on the body, and the tweeter
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and the woofer are provided in an arrangement of vertical twin speaker units.
[0005]
The arrangement of vertical twin speaker units, in which bass woofers are arranged equidistant
on the same axis from the tweeter in the center treble, is called virtual coaxial, and the amount of
coaxial information is small and the phase rotation is small, and woofer and tweeter composite A
speaker unit with a short distance and a good sound connection between units, but this is a
tweeter near the high resonance point of the middle body of the baffle plate where two sounding
bodies with different resonance frequencies combine. In addition, by providing a woofer in the
two sounding bodies, the standing wave is convected between the two sounding bodies having
different resonance frequencies, and the high sounding and the bass sound resonate, so that the
excellent sound quality and the amount of information can be obtained. Can be provided.
[0006]
Also, in the speaker device according to the present invention, in the speaker device according to
claim 1, the shape of the baffle plate formed by combining two sound bodies having different
resonance frequencies is any of violin, viola, cello, contrabass, ukulele, guitar and the like. It is an
object of the present invention to provide a speaker device characterized in that it substantially
conforms to the shape of a sounding body of a stringed instrument.
[0007]
According to the present invention, as the shape of the baffle plate formed by combining two
sound bodies having different resonance frequencies, the shape of the sound body of a stringed
instrument such as a violin, viola, cello, contrabass, ukulele and guitar has historically been an
acoustic effect By adopting the above-mentioned arrangement of vertical twin speaker units, the
present invention not only provides a speaker device having the acoustic characteristics of the
excellent acoustic body, By having the form of a stringed instrument as an appearance, it is
possible to visually appeal high musicality and to have an effect of giving empathy to those who
listen to music.
[0008]
Further, the present invention provides the speaker device according to claim 1 or 2, wherein the
baffle plate is made of a plate material for musical instruments, and a multilayer varnish for
musical instruments is coated on the surface.
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Baffle board is manufactured using material for piano resonance board and scissors for body
material of violin, and by applying multi-layer varnish for musical instrument on the surface, it is
possible to obtain the same excellent vibration mode as musical instrument it can.
[0009]
Further, according to the present invention, in the speaker apparatus according to claim 1, 2 or
3, the input to the tweeter in the passive network in which the input signal from the amplifier is
divided into a bottom band signal going to the woofer and a high band signal going to the
tweeter. The present invention provides a speaker device characterized in that an attenuator
transformer is adopted as an attenuator circuit for reducing the voltage.
Depending on the installation location of the speaker system, it may be difficult to balance the
tweeter and the woofer when high frequencies may be heard large, but at that time, an
attenuator transformer is used as an attenuator circuit to reduce the input voltage to the tweeter.
Thus, the audio signal can be passed while maintaining the amount of information, and there is
an effect that degradation is not given.
[0010]
Further, the present invention provides a speaker device characterized in that the speaker device
according to claim 1, 2, 3 or 4 is an on-vehicle front speaker device.
The present invention provides an on-vehicle speaker device that is most suitable for car audio
that has a close distance from the speaker.
[0011]
The invention will now be described in detail by way of illustrative example.
In the apparatus body 10, a tweeter 5 of high range is provided in the vicinity of the high
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resonance point of the intermediate body 4 of the baffle plate 1 formed by combining two large
and small sounding bodies 2 and 3 having different resonance frequencies. The two sounding
bodies 2 and 3 are provided with woofers 6 and 7 in the low range.
8 is the center of the tweeter 5. Woofers 6 and 7 of the same output in the low range are
arranged equidistant D on the coaxial L from the tweeter 5 in the high range in the center, and
are arranged in a vertical twin speaker unit. This arrangement is called virtual coaxial, but by
providing the tweeter 5 in the high range in the vicinity of the high resonance point of the
intermediate body 4 of the baffle plate 1, the amount of information on the coaxial L is large, and
the phase rotation There are few, the synthetic | combination distance of the sound of the woofer
6, 7 and the tweeter 5 is short, and the connection of the sound between each unit has become a
good speaker unit.
[0012]
The form of the baffle plate 1 in which two sounding bodies 2 and 3 having different resonance
frequencies are combined includes the illustrated violin, viola, cello and contrabass which has
historically established sound effects as a sounding body of a stringed instrument. In addition to
the shape of the sounding body, it is also preferable to make the shape of the sounding body
such as ukulele and guitar. However, without being limited to the form of the stringed
instrument, for example, it is possible to adopt the front shape of gourd, dharma, etc. Further, as
the two sounding bodies 2 and 3 having different resonance frequencies, a shape in which a
circle and a square are united, a shape in which an ellipse is united, a shape in which a polygon is
united, or a combination thereof. Includes the combined shape.
[0013]
As shown in FIG. 3, a large hole 9 is provided on the back side of the woofer 6 and 7 at the
installation portion, and the rear portion of the speaker is fitted and attached to a mounting hole
12 provided in the thin plate portion 11 at the center. Further, a large hole 14 including the fshaped notch 13 is provided in the installation portion of the tweeter 5, and the rear portion of
the speaker is fitted and attached to the mounting hole 16 provided in the thin plate portion 15
at the center. The baffle plate 1 is manufactured using cherry for a piano resonance plate or a
brow for a body material of a violin, and is provided with a multi-layered varnish for musical
instruments on the surface to obtain an excellent vibration mode similar to a musical instrument.
Can.
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[0014]
Further, in the speaker device of the present invention, the input voltage to the tweeter 5 is
reduced in the passive network that divides the input signal from the amplifier into the bottom
band signal going to the woofer 6, 7 and the high band signal going to the tweeter 5. The
attenuator circuit is characterized in that an attenuator transformer is adopted. Depending on the
installation location of the speaker device, it may be difficult to balance the tweeter 5 and the
woofer 6 or 7 with a high frequency sound, but at that time, for the attenuator circuit to reduce
the input voltage to the tweeter 5 By adopting the attenuator transformer, the input voltage and
the output voltage can be made proportional, and the audio signal can be reduced while
maintaining the amount of information, so that the amount of information is not deteriorated. In
this case, in the configuration in which the voltage is reduced by simply inserting a resistor in
series, the amount of information is degraded.
[0015]
In addition, when the speaker device having the above configuration is used as a front speaker
device for a car, in the car audio that will be heard at a position where the distance from the
speaker is close, the upper and lower two different resonance frequencies such as the violin
shape etc. An arrangement of vertical twin speaker units is given to the baffle plate 1 where two
sounding bodies 2 and 3 are combined, and the virtual coaxial has a large amount of information
and little phase rotation, and the sound synthesis of the woofer 6, 7 and tweeter 5 Since the
distance is short and the speaker unit has a good connection between the units, it provides the
most suitable vehicle-mounted speaker device.
[0016]
As described above, according to the speaker device of the present invention, the tweeter is
provided in the vicinity of the high resonance point of the intermediate body portion of the baffle
plate formed by combining two sound bodies having different resonance frequencies. By
providing the woofer in the two sounding bodies and having the tweeter and the woofer
arranged in the arrangement of the vertical twin speaker units, two sounding bodies having
different resonance frequencies are united by the arrangement of the vertical twin speaker units.
By providing a tweeter in the vicinity of the high resonance point of the middle body of the baffle
plate and providing the woofer to the two sounding bodies, the standing waves are convected
between the two sounding bodies having different resonance frequencies, and the high range and
low Resonant range, large amount of information on virtual coaxial, less phase rotation, short
combined distance of woofer and tweeter, each unit There is an effect that it is possible to
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provide a connection good speaker unit of the sound.
[0017]
Further, according to the speaker device according to the present invention, in the speaker device
according to claim 1, the shape of the baffle plate formed by combining two sound bodies having
different resonance frequencies is: violin, viola, cello, contrabass, By having a configuration that
substantially matches the shape of the sounding body of any stringed instrument such as ukulele
and guitar, the shape of the sounding body has historically been recognized as a sounding body
excellent in sound effects, By adopting an arrangement of twin speaker units, not only providing
a speaker device having excellent acoustic characteristics, but also having the form of a stringed
instrument as an appearance, it is possible to appeal visually for high musicality, It has the effect
of giving musical empathy to the listener along with the sound.
[0018]
Further, according to the speaker device of the present invention, in the speaker device according
to claim 1 or 2, the baffle plate is made of a plate material for musical instruments, and has a
configuration in which multiple varnishes for musical instruments are coated on the surface.
There is an effect that it is possible to obtain the same excellent vibration mode as an instrument
which is manufactured using cherry for piano resonance plate and a brow for body material of
violin and has a multi-layer varnish for musical instrument coated on the surface.
[0019]
Further, according to the speaker device according to the present invention, in the speaker device
according to claim 1, 2 or 3, a passive network that divides an input signal from the amplifier
into a bottom band signal going to the woofer and a high band signal going to the tweeter. In this
case, by using an attenuator transformer as the attenuator circuit to reduce the input voltage to
the tweeter, high frequencies may be heard large depending on the installation location of the
speaker system, and it may be difficult to balance the tweeter with the woofer. When it occurs,
the attenuator transformer has the effect of reducing the audio signal while maintaining the
amount of information.
[0020]
Further, according to the speaker device according to the present invention, since the speaker
device according to claim 1, 2, 3 or 4 is a front speaker device for a vehicle, it is most suitable for
car audio with a close distance from the speaker. There is an effect of providing an on-vehicle
speaker device.
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