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JPS543521

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS543521
DESCRIPTION OF THE PREFERRED EMBODIMENTS Loudspeaker l In a loudspeaker comprising a
casing with front and rear walls and at least am similar electroacoustic transducers, * 1 '/
transducer (2s, 2) Forward 1t (薯, 414) K, also 1-co conversion 1B (!. IJ) (If you are connected to
the common power supply (& 7 11i (J7, hiro 7)) and the image quality converter is connected to
a common power supply I am connected to 5 pots to move the bowl, $ j).
2% claim scope
3. Detailed Description of the Invention The present invention relates to a loudspeaker.
Loudspeakers are used to convert the electrical signal to St, and consist of at least one
electroacoustic transducer, which overcomes the piston-like membrane plan that the transducer
normally reciprocates, It is also sealed or provided with a small opening of 4hlWA in the casing.
Frequency has been recognized as the most important physical variation of loudspeaker
technology. All Hi-Fi standards specify the maintenance of values dependent on this frequency. In
this case, analysis that takes into account the positive average amplitude squared obtained over a
relatively long period of sound pressure depending on this frequency, or the standard 10 needs
to handle one human ear constantly, and also the peak value It is overlooked the fact that it is not
possible to detect a safe sound pressure change with a duration t- of a few microseconds or
milliseconds equal to the difference between the peak values of the positive and negative
amplitudes of the sound pressure. For example, according to 15 not only concerning the
reproduction of sound, but also the case. As for the hearing impairment caused by too much
noise at work-the same interpretation as 4 below is always often taken as representative. That is,
the time dependence of sound pressure is more important than the frequency dependence of tEE
and the maintenance of the predetermined frequency characteristic ynEndPage: 2 (high-fi stereo
acoustic effect, 1 q) 7 years old 3 volumes JA? Page "Sound listening test" and commentary;
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Published by Priiel (Briiel) and Kale (Kjaer), technical review / f? 6 years 2i to 3 pages). The
above interpretation should be regarded as the so-called 2 taiil, that is, the rectangular wave
emitted from the sound source and the half wave of the sine wave, for example, important for the
localization and timbre of the constant sound source, since the failure of the device inherent The
back pressure change inside the ft crest which limits. This is because the position measurement
and the timbre are adversely affected, and in this case, the failure inside the device means a
failure and a defect which are not present in the electric signal to be reproduced in the case of
the transmission method in the case of converting the electric vibration into the sound wave. Do.
Therefore, the present invention 扛 1 The following recognition is taken as starting thought.
Tests or regulations governing the measurement of average juice kings in the frequency range of
a constant sound source do not yield satisfactory results as long as the results do not resist tests
and regulations relating to the time course of age / m1ll There is one point. According to the
measurements of loudspeakers with different casings, of course, the 1ytfHL head assembles the
electroacoustic transducer into one infinite baffle, so it only works well with loudspeakers
suitable for practical purposes. It is understood that it is transmitted.
On the contrary, as the casing with finite dimensions, it also suffers from too severe quality
deterioration of lpl 5 wave front. t / wave iI can not be reproduced faithfully by the conventional
loudspeaker-. The invention thus starts from the recognition that in the case of the loudspeakers
known in the prior art, in particular the casing is responsible for a large number of ten faults in
the region of the lt wave front. The main object of the present invention is the above recognition
and phenomenon. The present invention is to provide a loudspeaker in which the ft wave front is
reproduced as well as a transducer provided in an infinite baffle and the casing has a finite 15
dimension. Therefore, this loudspeaker generates sound pressure at one constant measurement
point in front of the casing when energized rapidly and rapidly once in one direction or in the
opposite direction. This sound pressure is delayed to the maximum [(minimum value) and then to
the minimum value (-(] maximum value)%: linearly falling (rising) system, and starting as late as
possible i time point, ie 鋒 y j mm It is in particular configured to reverse the direction of the
temporal progression after more than a second and then return to the standard value again.
According to the present invention to solve the above problems, a loudspeaker having a casing
with a front wall and a rear wall and at least two electroacoustic transducers, fang! Arrange the
transducers on the front wall and the wood co-converter on the rear wall 7. And both of the
transmitters are connected so as to be moved outward or inward simultaneously when their
membrane plans are connected to a common source. And the casing is a closed casing. It is
already known to provide various electro-acoustic transducers, for example various high-tone,
medium-tone and low-profile transducers, in a casing of / llil. Moreover, this type of loudspeaker
is contrary to the one loudspeaker according to the invention 3118. It is useless for the faithful
reproduction of the head. The same applies to the other known loudspeakers (U.S. Pat. No.
33,937) in which the front and rear walls of the 11 casings are provided with transducers 11/12
respectively. The overlapping difference of the above-mentioned known loudspeakers with
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respect to the loudspeaker according to the invention is that the casing of this known Loudsbi 5force is not completely sealed, but is provided with an opening, which is the membrane of the
working volume transducer The pressure balance between the front side and the rear side 111 of
the plane is always possible, so that in the case of the stroke in which the membrane plan is
oriented inwards, the ground air is exhausted towards the outside, whereas the membrane plan
In the case of the outward-oriented stroke, respectively, air is drawn into the housing from the
outside, so such an opening is on the one hand a known short circuit in the case of low
frequencies. , On the other hand, each casing opening 15 acts as an auxiliary radiation source,
which acts in phase opposition with respect to the membrane and emits pressure waves, which
are the pressures emitted from both membranes Inconvenient interference with waves in various
ways.
Thus, the casing opening of this pole works against the infinite baffle liIEndPage: 3 shinningon! It
will result in marked deterioration of the quality of wharf. According to the invention in order to
prevent this defect, a sealed casing is provided. The term "sealed" here means that the casing
does not have an opening except for some leakage points which can bring its standard pressure
to the pressure of the external atmosphere. The invention has the added advantage that the Oko
converter pumped to the rear wall of the loudspeaker casing has a very similar function to an
infinite baffle. According to the measurement by the loudspeaker according to the present
invention, it has been found that the pressure curve in the case of rapidly energizing both of the
menplans is as obtained so far obtained only with the 9 converter assembled into an infinite
baffle - Further advantages, the rationale and the important features of the invention, will be
apparent from the following detailed description with reference to the accompanying drawings of
the examples. ? The figure shows a known device for measuring the time course of the sound
pressure unhindered by echoes at certain points in front of the loudspeaker. Fix the
electroacoustic transducer 3 with ginseng plan in space co II, 1 above mentioned menplan can be
reciprocated in the direction of the arrow by voice coil, and the fore stomach of 9 men plan is
attached In the unpowered state, the I / I is restructured and closed (US Patent Specification O 3
Co OIS Co 5! Mount the microphone S in front of the wall 3. This microphone receives the sound
waves emitted from the transducer 3 and is relied upon to measure the sound pressure
generated at the location of the microphone S by the transducer. One microphone 10 j that can
measure f8E to to Hz or less; l and 1l15! The tA inch free field capacitor 1 lff half-inch free-field
capacitor microphone as well as the microphone of the device according to 0, and connected to
the electron beam oscillograph, this oscillograph is the location of the microphone S whose
function 15 is 1 It is used for visual indication of the sound pressure at. The wall l acts as a short
circuit, an infinite baffle in which the propagation of sound pressure waves is blocked into the
space behind IIl relative to space co. Therefore sound pressure wave is at speed of plaster! It
propagates hemispherically to il solid angle coπ. マイクロホン! In the case of a device having a
sensor and a transducer 3, their distances from all reflecting surfaces are at least as long as the
echo wave has a travel time equal to the direct distance of the transducer from the microphone S.
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It is sized to reach the microphone S for the first time in a while, and in the case of this one meter
direct distance of rounding, it is desired.
It can be seen that it corresponds to the distance of If the membrane plan is shifted in the
direction of space, and it is located at 1 at the above position, the sound pressure p as a function
of time 1 corresponding to the curve 6 of the octograph at the location of iicloson S Changes in
the amplitude of the The amplitude increases rapidly at first, slows to the maximum value and
then gradually decreases, passing a zero line equal to the standard pressure. It tries to delay to
the minimum value and then return to the standard value again ll1i order. It is noteworthy that
there is a pressure beam which settles in the positive region which shows back pressure change
in the positive direction and the negative direction in 1 curve number. This kind of pressure
change caused by different spring / mass action and the sharp e-shape of the curve 6 which can
not be prevented by the vibration of the membrane plan, in particular in the case of the rapid
excitation of the membrane, and by the spring of the conventional converter. The result is a
significant deterioration of the sound pressure at the receiver location and thus the quality of the
information sensed by this receiver, since these deteriorations are emitted in response to the leap
trend Because it is not included in the The curve t shown in FIG. 3 shows y ideal behavior. This
curve t is obtained by means of a device according to the lyt diagram by means of a converter
according to the German patent publications 7trtsbqa and 'j7223b3'llA and also to the German
patent publication 72sooyqq, said converter having a substantial mass effect There is no
pressure change that would be an obstacle even in the case of rapid activation, since there is no
viscosity and a viscoelastic membrane plan is used. Furthermore, the curve l drops linearly in the
case of reaching the maximum or the minimum value, i.e. It is near the second. A frequency lamp
which can be calculated from the time interval between the two inflection points 9 and 10, and a
device intrinsic resonance frequency of the entire loudspeaker system consisting of the converter
3 and the wall I can have 1'sEndPage: 4 . The apparatus used to record * IIJt, since the curve t
lying between the inflection points t and 10 has no interference ripple and the I-JK according to
the e-function scales in a so-called line shape Therefore, it is necessary to be able to transmit a
square wave signal to at least about tto Hz or less and a sine signal to at least about jj Hz or less.
The reason is that when energizing the membrane with a square wave signal the half oscillation
of the square wave signal must be combined in the region between the inflection point and 10,
while energizing the membrane with a sine wave signal If the first / 7 of the sine wave signal. Is
to rise to Kl in order to deflect to its maximum value of the membrane, so that the next // of the
sinusoidal oscillation is combined in the region between the decurvature point 10 and 10.
The previous measurements demonstrate the above. The device according to the drawings used
to measure the temporal variation of pressure waves emitted from a loudspeaker with a finite
housing to be enclosed comprises an electroacoustic transducer with a membrane plan 12
reciprocating in the direction of the arrow It consists of ti. Transducer // l-j, attached to the front
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of the loudspeaker casing -4 at -15, so as to close in substantial alignment with the butterfly
forward 8M13 in the forward fog of the membrane 1 run 12 in the unpowered state There is.
Two microphones 16 and 17 are provided to measure temporal changes in sound pressure, with
the microphone 〆Atj being the central axis of the membrane and also the microphone / 'lrL, HJ,
/ 3f) the front end It is provided at the height of the 5th run 12 in a constant plane configured
via the casing 2 or the membrane 2 and the microphone 4 //. ij, the closed chamber / lfq so that
the pressure wave generated by this membrane 12 also reaches the microphones 16, 17 and 10
on a direct path earlier than any reflected nine pressure waves by about 6 to 10 milliseconds It is
an arrangement. When the membrane plan 12 is rapidly energized, the curve shown in FIG. 23 is
obtained, and in this case, the line 1 is recorded by the microphone 1 and by the curve gH
microphone 17. A sharp drop in sound pressure is shown at the double-opened Htq, 卯 and 一定,
and there is no drop in 1515 and 曲線 and 曲線. The above-mentioned drop in sound pressure is
attributed to the finiteness of the casing group and causes a characteristic pressure change
which causes misinformation in the wave front. If the transducer used to record curve t is used, 1
gA · 1) ^ 42, where the drop at t1 is clearly characterized by g #, the curve 6 is the curve 19 ε
と and the company time t 1 And almost follow a linear course. Point 1. It can be calculated from
the speed of sound to cause pressure and descent. The rapid bias of the membrane 12 causes a
pressure change in the chamber / J, which is initially the case of the membrane 12 as in the case
of an infinite baffle according to FIG. 1 to use a sealed casing. It is propagated only into the space
immediately before. After about a certain time t = a / c, here 1! Is the distance from the end of
the wall 15 to the center point of the membrane and S is the speed of sound, but on the pressure
change caused by the membrane t2, behind the wall 15 ie on the opposite m-plane of the
microphone 16 of the wall 15. It also propagates to a certain space. In other words, this pressure
change propagates after time t = tf) instead of to solid angle 5.
This effect results in the sound pressure at one location of the microphone 16 dropping off
rapidly from the beginning of the measurement after about t = ~4 hours. The curve fl14 indicates
that the drop in pressure at point 11, which can be seen from the diagram S, is practically equal
to the reading a / C. Similarly, it is understood that the sound pressure drop (curve X) added by
11 by the microphone 17 also needs to be attributed to the finiteness of the casing H. Therefore,
when using a limited casing, 1 year old I wave ml is faithfully reproduced only when the time
interval t = wholesale 4 is about 1% (% thicker than the water cant. In the case of 3 normal
casings, which requires the distance a to be 1.75 m, which is impractical for practical use, this
distance 1ut = a / C is 0.298 cm. If the value of 1 / t 1 s or the frequency ttoo Hz and the
corresponding sHz correspond to about 10 to 10 senna meters, below these frequencies the
wave front is no longer reproduced faithfully by the usual casing . According to the invention, the
sound pressure casing limited descent entrains the Oko electroacoustic transducer on the rear
wall of this casing, and the broadcast behavior of the forceps converter is less than 15 (not even
prevented by this casing In the case of frequency, the forward IIK is assembled and y is equal to
the broadcasting behavior of the 9-bar converter, and the Oko converter always faces the
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membrane plan of the image quality converter at the same time as the 1 / converter. It was found
that when the electrical "in-phase" K is energized to move the EndPage: 5 at the same time to the
hearing all at the same time, it can be significantly prevented. Tree [1] shows such an apparatus
schematically. In the chamber n, a rectilinear casing-is disposed, and on the front wall of the
casing, a converter j having ease of installation is provided. The rear wall core parallel to the
front Il of the casing has a similar transducer U with a membrane M and is suitable. The image
quality converters U and U are in a state where their membrane plans 3 and 2 are not energized.
Or the rear wall y 1 9 is provided so as to align and seal with the front and rear lllr M of the 27
and the rear 7 j 11 side. Both membranes can be reciprocated piston-like as in the previous
example in the form of a switch, and the image quality converter and U are in the direction of
arrows λ and pl if they are rapidly energized. To make a shift towards the outside 11 electrically
connected. tEE is measured in front of the transducer using a microphone Xt.
Furthermore, the image quality conversion devices U and U and 9 have their membrane design
易 and ν arranged coaxially. 5へ。 The curve 31 obtained with the device according to FIG. 16
is shown in the off view 1 and the pressure drop at the point 1+ which is characteristic for the
curve 19 according to FIG. As compared with the curve tK according to the above, it is shown
that between the two inflection points 32 and 33 it becomes a slightly wider curve piece equal to
the time of y ms milliseconds. Transducer U, which is cast on the aft wall core, has the same
effect as an infinite baffle, which is considered in the plane of symmetry between the image
converter and U. Therefore, the pressure wave field generated from the 10 transducers U can be
called an "air baffle" of practically unlimited size. It is shown that after penetrating through the
spacing a as in the example of the Figure, it also has a tendency to be propagated to the solid
angle entry π, ie the 15 space behind the front 617. Moreover, this is prevented by the
occurrence of a suitable pressure change in the Menplanno, in contrast to FIG. The pressure
wave field generated by both membrane plans and M abuts in the plane of symmetry, and the
symmetry plane, along with this plane of symmetry, is an infinite wall, along this plane of
symmetry. Controlled. Another demonstration that Oko converter U acts like an air baffle is given
by song II 3 da, 3 j and 36 according to FIG. The curve 3 da is recorded using the device
according to FIG. 6 f 6, where the transducers j and U are “out of phase”, ie, during rapid
activation. The pole is thrown so as to deflect the membrane U of the transducer J in the
direction of the arrow p and at the same time simultaneously deflect the membrane M of the
transducer U in the same direction, ie in the opposite direction of the arrow. To record curve 3S,
use only transducer j by shorting transducer U, and also curve 36. Image quality U and U are
recorded by one and the same phase "bias". If you compare the talented S and the talented figure
(compare? The echo is recorded, where it is substantially generated by the reflection of the baffle
at the basement. The time scale is y times as large as s, s, and s compared to the figure. The curve
後 に shows a medium-sized age-l echo that is equal to the y-th power of the maximum amplitude
of the wave-front after time-out. Contrary to the steep n, the ft echo of the curve 34 is noticeably
large and wrinkles equal to the value of de S 嘩 of the maximum amplitude of> 1 and tflm. From
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these measured values, the Oko converter U has the same function as the infinite baffle for the
position of the space with the microphone y, because the Eco 5-5 of the same size Because it can
only measure.
Curve J / (1 ') does not arc completely linearly between one inflection point 32 and 33. The
reason is that the casing according to Figure 16 is six-sided and spaced? 1aQ)+。 Cause a
failure. For example, similar obstacles appear when using a spherical casing with a diameter of y
centimeters. The obstacle shown in curve 31 The loudspeaker shown in FIG. 1 and 10 which can
be largely prevented when using a casing according to FIG. 1710 consists of a disc 15
rotationally symmetrical casing, the cross-sectional shape of which is diamond-shaped. As can be
seen from FIG. 1j-10, the electroacoustic transducers Hiroko and Shun are mounted on two
coaxial lines with a constant rotational axis, so that the above-mentioned transducer's membrane
and cup S are not energized-: ( Continued as far as possible to the outside of the casing wall with
EndPage: 6 states at 1, 51. The axis of rotational symmetry @ 4 L / ri, at the same time, becomes
the central axis of the quality converter cup and the hiro 5. The circuits of both transmitters are
configured as in the case of the loudspeaker according to the paint 6 so as to be electrically
energized in phase. With a fixed edge of change and season, the casing is forward 94A &
backward! ! The distance up to 4'7 is progressively shorter until the single receiving shaft and
the collar 7 abut each other at a symmetry plane which is orthogonal to the rotation axis. The
two receiving shafts and the weir 7 meet at the outer circumference Sψ 9 of the casing and
extend vertically until it constitutes one half shell which is followed by the casing wall being
stiffened. It is advantageous for one receiving shaft and ← 7 not to be peaceful between the
transducer radials and the seasonal fixings and the outer circumference q of the casing, and to
extend in the form of a dovetail curve. The degree of curvature is best determined with reference
to the twL curve measured with loudspeakers according to yPto-alternatively, some curvatures at
1i 4114 and ← 7 should be almost insensitive to bending vibrations Preferably, the wall and ← 7
are designed as spherical as 煽-which is shown in dashed lines in the tlo diagram. The radius of
this sphere must then be greater than one dimension a (figure //), so that the imperfections that
occur in the case of a sphere can be avoided. 1171 shows the arrangement of the loudspeaker
according to FIG. 710 in space, 1/1, using the microphone octopus and 53 of the running JIII to
measure the sound pressure 5, these microphones being the axis of rotation Hiro / 9 is cast in a
symmetry plane q of the same height as the membrane center point.
In the case of rapid activation of the membrane and stop in the direction of the arrows p1 and
PL, the curve 103+ <microphone 5J) and jS (microphone S3) shown in FIG. Age / l /! First!
German Patent Publication Gazette Oko! If it is used according to the 100397, the diameter of
the transducer is l decentimeter if the diameter of the outer periphery u15 of the casing is 40
centimeters. In other cases, the image quality converter and the season are configured identically.
The curves S and jS extend almost linearly between the inflection points S4 and 37. The time
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interval between the two inflexion points S6 and 57 is determined as kc ′ ′ == S millisecond.
The rise time between the zero point of the bias outside the curve and the inversion point j4 is Y
/ I will be a second. In some cases the measured sound pressure curve according to 扛 / 2 @ f C
shows a slight deviation from linearity, the above mentioned deviation of the casing's transducer
being the force or transition of the casing wall to the surface of the membrane It can be
generated by the unsteadiness in the process and the interference that works for this. Such
obstacles are the casing walls. In particular, it can be compensated by the waves of the front wall,
where the convex waves of this wall act out of the curve and the rise of 55 respectively and the
concave waves act as the curve out of curve respectively. I love you. In FIG. IF 73 a casing is
shown which is equivalent to the casing according to FIG. 1 y 10, in which the convex wall ring
59 of ni @ on the front wall is also lI! The concave diameter ring 40 is equipped. The limit of such
correctability is determined by the inner diameter of 9 J centimeters and the outer diameter of 3
j centimeters of the casing according to 7 / J figure f 'L, with this kernel the frequency about l de
kh o Hz and 亭 14 H 冨 or Travel time O, equal to t and 1.01 ms, 1 further? It can be seen from
the 図 figure that the microphone octopus and 33 (図 /) / 著 し く) give a significantly similar
curve, with the rise time F of the song H5 da. Of course, it will be quite short. Therefore?
Loudspeakers according to the tenth factor are practically zero-order radiating devices in the
case of rapid activation of membrane 5. The dimensions of the transducer according to figures 6
and 10, in particular according to the desired position of the bending point 33 and of the curve
37, are regularity-nh. The smaller the casing is, the shorter the distance between the two 10-turn
points 32 and 33 and 9 and 57. Furthermore, the drop in sound pressure in the 5p72 figure is
more rapid.
That's why Il'fly // the clear angle β increases from the figure. This is consistent with the
observation of a dip in the spherical casing. As the angle β is smaller i, that is, as the outer
surface of the eyebrow is closer to the plane of symmetry ql, the shapes of the curves S and j
become more preferable β. The particular advantages of the loudspeakers described above are:
1. The design of the casing according to the invention is all flawless, chair 1, no. In the case of
EndPage: 7 no, the improvement of the normal frequency characteristic curve of the entire
loudspeaker is achieved. The present invention is not naturally limited to the above-described
embodiments and the like. Even with full symmetry charging according to FIG. 1jf 10, for
example, the two sets of retrofits assembled on the front and rear walls of the casing can be
arranged slightly coaxially and not exactly coaxial. As shown in the plan view on the front wall
and the rear wall of the caged rack, it is possible to arrange each of the transducers with a knee
or more, and in this case, in particular, along the straight line, the rotational axis nails. A
characteristic directional action is obtained by arranging each of the plurality of transducers on a
straight line orthogonal to the straight line and a straight line perpendicular to the drawing of
FIG. Not rotationally symmetrical in relation to this, cylindrical front wall and backward Il!
Casings with can also be used. It should also be noted that the transition between multi-element
plans and multi-casing walls can provide a simple and smooth transition instead of abrupt
01-05-2019
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transition, and the effect of the smooth transition is a curve according to the age / J diagram It is
clearly understood from All conventional means in dosby force technology can be used for this
one purpose. Furthermore, it can be different from the transducer (tto) butterfly assembled in the
rear Il gins 7 and the transducer in the # 1 square, and only a frequency of 5 greater than the
casing dimensions is transmitted As long as it is necessary to do so, the quality can be reduced
especially cheaply. This is because the backward converter loses significance if it has more for
the relatively high 9 frequencies, which is derived from the following. The pressure drop of the
curve according to the tj diagram recorded by the microphone 16 according to the 10 or figure
diagram is that the pressure drop of the curve according to the tj diagram always appears at the
time of traveling of the sound wave at the end 1 is there. In order to improve the curve according
to FIG. 15 that is recorded with the microphone l f by the off figure, it is of course also necessary
to use a much better transducer, because of the snow pressure at the location of the microphone
l f On the other hand, even in the case of medium frequency, both loudspeakers are still working
well, and by using multiple loudspeakers according to the present invention, it is possible to
achieve the spatial and temporal resolution which is not 1 w1 m conventionally. The resolution is
not related to the optimal spatial localization of the loudspeaker itself, but should be represented
by the sound waves to be transmitted!
It relates to the sound source. When using acoustic transducers according to German Patent
Specification 瞥 11149 Da and コ コ ko 3637 and German Patent Publication a asoosq'y, in the
"1 ttl head area" important for sound source-accommodating broadcasting, The above-mentioned
transducers do not exert any disturbing pressure changes as well, so in the case of this type of
transducer a single lacto-speaker according to the invention a total of a! Alternatively, it provides
another advantage for obtaining the unique device intrinsic resonant frequency of so-y Hz. Thus,
the cn et al. 9 dos beaker according to the invention is particularly capable of reproducing sound
that is cleaner and thus faithful to the sound source. The broadcast intensity of the loudspeaker
according to the invention ratio fluctuates only slightly compared to the loudspeaker according
to the present invention, and this loudspeaker is placed in the atmosphere or in the room, close
to the wall near the wall, and 19 near the floor It is said that one is irrelevant. And so because it
is an air or acoustic baffle? The loudspeaker according to the invention does not depend on the
environment because of the limited and precise radiation of / wave-, 5 and further according to
the invention, said gl & l intrinsic resonance frequency is y90 H! The problem with KIh is not
particularly limited to the fact that fluctuations in the surface of the membrane can achieve
relatively large resonant frequencies which are relatively small. Another important advantage of
the loudspeaker according to the invention is that it can be achieved by facing and supporting
the front wall and the rear wing of the 10 transducers, or both 10 transducers or the caings, in
the blP10 diagram both prize converters IA2 and season It is shown 15 places supported by
rings 4- and 63 of ni @ and fixedly connected to both links 6-2 and 63 by means of
reinforcement 4 respectively. Because of this, all reaction forces that generate parallel vibrations
of the voice coil and membrane in phase are all absorbed by the reinforcement section and are
01-05-2019
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not transmitted to the lacto speaker casing U accordingly. EndPage: Fi is particularly
advantageous in damping 8 converters and supporting them in isolation in multiple rings 6 and
63, thus preventing transmission of vibrations to the casing. In contrast to this, both the dampers
are damped and separated and supported by the casing wall, and the reinforcement base is
provided at another point fPII, the bulge ring S and the base O. Therefore, the deflection of the
casing wall can be prevented at the above-mentioned place. The loudspeaker casing Fs according
to the invention can thus be made of a thin material, substantially thin, eg from 3 to 1 mm, as
compared to the prior art 9-Dosby cabinet, which is an obstacle due to the thin material There is
no need to generate resonances or to take into account the deflection of the casing.
After all, in the case of a conventional loudspeaker in order to prevent disturbance resonance
inside the casing of the loudspeaker according to the invention, it is possible to take measures (fII
for example filling with a sound absorbing material, etc.) which are known and common. . This is
also effective for all other measures other than the present summary. The removal of the
loudspeaker according to the invention in a given room 8 8 · · · is carried out by means of a
hanging tube or mounting. One * mIPl for this 1 is shown in 15 years old and 14 years old. The
dimensions of the frame required for assembly have no significant effect on the course of the one
year wave front, since the dimensions of seven frames are compared to that wavelength at which
the loudspeaker according to the invention has particularly thick S critical advantages From
small i. The scope of use of the loudspeaker according to the invention is also not limited to the
embodiments described above. As a special application range, for example, usually for each n ear:
used for synthetic material stereophonic 10 effects using each n / 1m earphones, for example,
for a single traditional loudspeaker only It is because acoustically effective transmission is not
possible. On the contrary to this synthetic material stereophonic echo effect device it is also
possible to use a single loudspeaker according to the invention according to FIG. 10, for example
(in the case of the polarization described with reference to FIG. 10). It is possible to apply a signal
to one of the ears to a converter / converter from the fact that it is possible to supply a signal to
the ear of the 19th-converter IJK opposite tone. This loudspeaker is, for example, in the center of
the room with a cover, and in addition to this cover at the rotary axis! If you hang up in parallel,
the record recorded by one population head is reproduced indoors. The listening t is then located
at the location of the λ rohead at the position of the Mi 70 phone S3 according to the figure I1
and it is then necessary to keep in mind whether it is forward or backward. Since the
determination of the direction "forward and backward" Fi, of course the transducers ~ and the
gradients are slightly inclined as shown in Fig. 7/7, do we place a similar earpiece to these
transducers? It results in a throttle which is tilted through the center of the transducer. Although
various embodiments are possible in the case of the above-mentioned entry head regeneration
which only requires a llI casing, for today's conventional methods of travel-time and intensitystereophonic sound, of course now for each ear signal respectively i @ loudspeakers (eg 1? It
seems more reasonable to provide one or more transformers of each 9 dos beakers in the same
phase. Finally, the invention is not limited to the casing shapes described with reference to the
01-05-2019
10
figures z, to, ti, ts, introductory and 77-/ '1.
For example, where the cross-sectional shape of the ttf cage is reached, one of the cross-sectional
shapes of the casing according to FIG. The upper and lower ends of the housing are each covered
by a flat wall, the top view of this wall having the same cross-sectional shape as is apparent from
FIG. A mixture of shapes 4 is possible.
4, a brief description of the drawing off the diagram is an electro-acoustic 1.0 transducer halve
lamp into an infinite baffle, in the case of the device according to the conventional converter offgraph the time recorded as a function of rt7 (sound Pressure curve Figure 3 shows the sound
pressure recorded as a function of time in the case of a device of the new type of transducer and
of the off-figure device-'1115, the House of Councilors attached to the room consisting of the
electroacoustic transducer arranged in the casing Loudspeaker S S @ is a device according to the
IF reference, recorded as a function of time f L 9 晋 pressure curve t & Figure attached to the
sleep casing-r L,-pieces! LIEndPage: Figure 9 shows the sound pressure curve 2 recorded as a
function of time with the device according to the invention according to the invention according
to the invention according to the invention with a loudspeaker according to the invention
installed in a chamber consisting of a converter connected in parallel in phase t6 The illustration
of the improvement possibilities achieved with the device according to the diagram ff The
diagram according to the device according to the invention according to the invention according
to the invention according to the invention according to the invention according to the present
invention Another example f /-figure is a sound pressure curve 1F / 3 figure recorded as a
function of time in a device according to the figure 10 Figure 1 is another real jlIiIPl for the
loudspeaker casing according to the invention? / 4A Fig. 1 Butterfly Another embodiment of the
loudspeaker 9 according to the present invention Fig. 4 shows an embodiment of a device
according to the invention for holding or mounting a loudspeaker in a constant room. Fig. 17 is
another embodiment of a loudspeaker according to the invention. 'duck. Ko り: Casing 薯, ::
Forward 1) Tips 4L? : Rear wall p, u, 4A2.4 AJ: f conversion! Easy, Jf, 4I4. N: Menplan watch
applicant Josef Veil Herm Manger agent 52 () and so on. EndPage: 10
01-05-2019
11
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