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DETAILED DESCRIPTION OF THE INVENTION The speaker apparatus signal source, a first
speaker, a substantially identical second speaker acoustically coupled to the first speaker, and an
output from an iX2 speaker or substantially in response to the output from the signal source and
the second speaker A speaker device in which the characteristic of the sound output is improved
by correcting and driving the same third speaker.
Scope of demand
Detailed Description of the Invention (S This invention relates particularly to high fidelity speaker
devices. The present invention has an object to obtain an improved speaker device with such a
small number of defects, in which frequency characteristics generally having a large number of
peaks, amplitude distortion and transient distortion are inevitable in the sound output of the
speaker. In the present invention, it is considered as wicking 1 to perform the correction by
noting that the present invention has substantially the same characteristics as the speaker
microphone. FIG. 1 (a) shows one method of distortion correction of the speaker. A signal source
1 drives a voice coil 22 attached to a cone 21 via an amplifier. 25 is a field. The coil is an L'i'J coil
which is wound slightly apart on the coil and coil bobbins as needed. The output of the coil is
approximately constant in response to the vibration of co / 21. The coupling of the two coils
which make a negative feedback to the Otter amplifier 20 is in the case where it is placed in the
field, and if necessary, another field means is added. It is possible to improve the characteristics
by negative feedback especially in the bass part by using various means to detect its cone
vibration, but the problem is that the emitted sound wave has a completely constant relationship
with the coil vibration especially in the high band. There is no such thing. This is due to the
division vibration of the cone etc. FIG. 1 (C) shows that 20EndPage: Width output X has the same
amplitude from the above speaker according to the present invention and produces an input
distortion signal Δ in the subtractor 5, Δ produces X-Δ in the circuit 6. If the coil 22 'of another
similar speaker 21 is driven, the distortion of the 21' can be prevented. It is also possible to
simply make a portion of the appropriately tapped or split-wound voice coil originate from the &
nmL coil end. 1d (d) shows an example of the voice coil lead as described above, and it is put out
on the surface of the damper 30 by using t-flow or steam flow Lfc'4'vt films 3i and 32133.34. In
this way, there is also the advantage that the "#" sound to the punctuation taro is less and it
becomes a low fold. Fig. 1 (f) shows the case where the modified Bambahoz 36 is made of a resin
and produces a metal BM or the like similar to that of the resin, and 37.38.39 shows a straw. If a
coil tag is used, the number of leads may be three as in the case of attachment, but of course it
can be configured as four. Such a lead configuration can of course also be applied to
conventional loudspeakers, and the characteristics can be altered because of the low impedance.
第 (The second doctor is an example of the speaker device according to the present invention,
and 2.3 is the same as the speaker of the present invention, for example, about 1 m apart, with a
sound propagation time from 2 to 3 Δ It is distorted. And processed by the gold circuit 6 to
produce x (t + τ) -Δ and put it into the similar speaker 7 so that its output is x (10τ) 15 -Δ10
Δ = xQ + τ) and no distortion occurs. The bucket 4 is convenient for a bucket, relay (Bl) D) Bl.
In some cases, the delay may be omitted or a filter such as a concave filter, or a computing unit
that corrects the distortion of the same 62 by the circuits 5 and 6 may be used by calculation.
For example, if the amplitude of the speaker 3 is V2 of that of 2, then it is cylindrical.
m., and output ((3.sup.i% I (a) .sup.i). The present invention is applied to a spy, sixphase system equipped with a hash cone or a drone cone. Signal 2 is a signal cone and 3 is a
passive cone. It is simply vibrated without driving, increasing the effective volume of the box and
enhancing the bass. In the present invention, the coil output of 3 is used as shown in FIG. 2, and
x (t + τn−Δ is generated as in the case of FIG. 2 to drive the other speakers. In the figure,
reference 8 indicates a characteristic of the box 9 and if it is a built-in filter, a low pass type is
mainly used to make it similar to the sound transmission characteristics in the space of 9. When
the amplitude of 3 is smaller than that of 2 the coefficient of 6 inside is properly determined as
in the case of FIG. 2 but in the case of FIG. 3 the amplitude of 3 is 2 (3) A speaker 2 'having a
similar structure side by side with a speaker box such as (,), but the output of the modification 6'
of 6 is modified to drive a speaker 2 'driven by X (10 τ) -2Δ The distortion is canceled as a
whole. Similarly, 2 '$ 3' may be switched up and down. Also, many such boxes can be arranged to
cancel the distortion as a whole. The speakers may be combined in the same manner as in the
method shown in FIG. 1 (C). That is, the excess δ of the output x (t + τ) + δ of 3 is δ → 0 in A
→ 1−5ψ. Pasigkko-73 is advantageous because the amplitude of the bass is generally increased
and distortion is increased more than that of the woof 12. The speaker 3 is acoustically coupled
to the speaker 2 to form a 7σσ and EndPage: 2 peaker system. In the above embodiment,
particularly in the circuit generating Δ and δ in FIG. 2.3.4, of course, the input signals have the
same amplitude and subtraction and the like are performed. Further, the present invention can
be applied not only to dynamic speakers but also to arbitrary speakers and also to acoustic
systems. The present invention is not limited to the above-described embodiment, but various
combinations and combinations of the embodiments can be made.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (a) is a schematic cross-sectional view of a
special speaker coil and its used circuit. Reference Signs List 1: signal source 20: amplifier 21:
speaker cone 22: voice coil 23: pickup coil 24: coil bobbin 25: field 26: amplifier etc. FIG. Part (b)
shows a modification of (a) Part 1 (c) is a circuit example 15 of the speaker shown in parts (a)
and (b) · · · 5, 6 · · · Arithmetic unit, 21 ', 22' ... low I speaker coil, Figure 1 (1) (e) shows the coil
lead part of the speaker of Figure 1 (,) (b) in elevation (d) plane (01 figure . 30 · · · Damper,
31132 · · · Lead film on the damper Figure 1 (4) is a modification of (d) (e). 536: Damper, 37, 38.
38: Conductor film portion 2 FIG. 6 shows an example of a speaker system according to the
present invention. 2.3 and 7 · · · almost identical 2 speakers, 4 · · · delay. FIG. 3 shows an
embodiment (a) (b) of a speaker coil according to the present invention. FIG. 4 shows another
embodiment 15 of the loudspeaker system according to the present invention. 8 ... low pass filter,
10 ... amplifier. Figure 1 EndPage: 3-1 @ stem 3 Figure 4 End Page: 4
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