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JPS5425723

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DESCRIPTION JPS5425723
Description of the Invention Name of the Invention Multi-way Speaker Device (1) A multi-way
speaker device having a plurality of speakers, which is a low-pass speaker response waveform to
a single sine wave pulse signal input equivalent to a crossover point frequency. First peak (WP1.
And-characteristics of the loudspeaker itself such that the response times of the second peak
(D2), which is the effective first peak of the response waveform of the high-pass speaker whose
polarity is reversed with respect to the low-pass loudspeaker, coincide. A multi-way speaker
device characterized in that time difference distortion between speakers is minimized by
adjusting the network characteristics and the positional relationship between the speakers in the
front-rear direction.
2, the scope of claims
3. Detailed Description of the Invention The present invention also relates to a multi-way speaker
device, and improved the acoustic characteristics of the iB multi-way speaker device by taking
into account the time difference distortion between both speakers with respect to the frequency
near the crossover point. It is a thing. Conventionally, in multi-way speaker devices, a method is
known in which several speaker units are arranged on the same-one-off-side-so-full plate and the
signal band to be applied to each speaker is divided by using a node. , Is common. And with
regard to the waveform transmission characteristics of the speaker, the frequency characteristics
of the sound pressure level with respect to the continuous waveform have been considerably
emphasized, but the response characteristics with respect to one transient waveform have not
been considered much because it is difficult to quantify. . However, the actual natural sound is a
complex transient waveform rather than a continuous waveform. In view of such points, the
present invention uses a single sine wave pulse as a transient waveform to improve the transient
response characteristic to human coverage. A detailed description will be given below with
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1
reference to the embodiment shown in the drawings. Now, the low band speaker and the high
band speaker are disposed on the same flat panel as in the prior art (see FIG. 1), and the polarity
of the high band speaker is reversed with respect to the low band speaker. A case will be
considered in which a saliva-sinusoidal pulse (FIG. 2 (1)) corresponding to the crossover
frequency is inputted to both speakers. Such a response waveform to the EndPage: 1 input
waveform is as shown in FIG. 2 (2). That is, the response waveform of the one-domain speaker
surface with respect to the input waveform (FIG. 2 (υ) becomes as shown in FIG. 2 (3), and The
response waveforms are as shown in FIG. 2 (4), and a waveform obtained by combining these
response waveforms is the waveform shown in FIG. This is because the sound emitted from the 1
range speaker and the sound emitted from the day range speaker reach the listener in 1 between
the low range speaker and the high range speaker It is because a difference arises in arrival time.
That is, it can be seen that there is time difference distortion in the response waveform.
Therefore, in the present invention, the second peak (TP2) is regarded as an effective first peak,
since it is very small at the first peak (TP1) of the response waveform of high-pass flicker + T +.
The response time of the first effective beam (TP2) and the response time of the first peak (WP1)
of the response waveform of the low frequency speaker surface are adjusted to coincide with
each other. Response time perfectly match the characteristics of the speaker arrangement, the
characteristics of the network and the position of all the speakers in the back and forth direction.
If you adjust all the features, the characteristics (frequency range-distortion characteristics etc.)
of each speaker actually used In consideration of this, it is sufficient to select the net and soto
work, and adjust the positional relationship in the front and rear direction of the speaker so that
the two peaks (TP21 (Wl) 1>) described above coincide with each other.
FIG. 5 is a view showing a speaker arrangement according to the present invention in the case
where the high frequency speakers (T) are located behind the low frequency speakers as well. In
the case of such a groove bottom, the synthesized response waveform has a waveform as shown
in FIG. 2 (5), and the input waveform (FIG. 2 (2)) has a much higher input waveform (see FIG. 2
(2)). It can be seen that it is close to 2 (1). According to the present invention described above,
the transient response characteristic to the 応 答 -sinusoidal pulse signal in the vicinity of the
crossover frequency can be further improved as compared with the prior art, and the time
difference distortion between the speakers can be reduced. By following, it is possible to improve
the sound connection around the crossover frequency. Although the above description is for the
case where the low range speaker and the low range speaker are used, when the high range
speaker, the mid range speaker and the low range speaker are used, the surface area speaker and
the mid range If M is adjusted as described above for the speakers and between the mid-range
speakers and the low-range speakers, it is notable.
4. Brief description of the drawings FIG. 1 is a diagram showing a conventional speaker
arrangement, FIG. 2 is a diagram for selling all input and response waveforms, and FIG. 6 is a
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diagram showing a speaker arrangement according to the present invention ) Is a high-pass
speaker, (5) is a low-pass speaker patent applicant Sanyo Electric Co., Ltd. fifth grader 1
EndPage2
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