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JPS5051719

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DESCRIPTION JPS5051719
Title of the Invention Electrical Converter for Musical Instrument
Claims
DETAILED DESCRIPTION OF THE INVENTION The present invention relates generally to
electrical converters of music, and more particularly to electrical converters providing selective
regeneration of low and high frequency components of variable charge. This electrical converter
is widely used in musical instruments with vibrating surfaces that generate sound. EndPage: 1 for
illustration only, not for limitation-h! Let's explain the case where this converter is used for
drums and guitars. Reproduction of electrical sound in the above-mentioned electric appliances,
in particular drums, has hitherto been considered very difficult. The other reason is that while the
signal generation system 9A-hE is stationary for the proper function of the conventional electric
pickup, the other system vibrates and the relative movement between the two is required. ≠!
Used to generate a nausea signal. Here, n is a well-known one and generates sound. In particular,
the above-mentioned stationary mounting is complicated at the time of assembly and as an
apparatus, and it is also difficult to apply the pickup to the drum, and even more so in the guitar.
Also, the vibrations found during non-percussive instruments and the normal playing of
symmetrical torn instruments further complicate the problem. In history, on the one hand, the
full range of audible output of drums with MJ frequencies such as brush stroke sounds, and on
the other hand the full range of audible sound outputs such as boom sounds produced by
drumheads . It is very difficult to faithfully reproduce in the manner known in the prior art, and
in the case of 7C, it is a charter even if it is properly mounted on the drum. Furthermore, it is
necessary to faithfully reproduce the musical tones of the guitar or 12 similar string rack over
the entire area 7r-so one object of the present invention is iif! In the mode of operation and its
configuration, it is an object of the present invention to provide an electrical converter which is
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completely different from the conventional one and which avoids the above-mentioned
conventional drawbacks. In a particularly remarkable further aspect, the transducer according to
the invention is in all cases arranged on the swing of the instrument = i-plane. That is, for
example, if it is arranged on the head of a drum or the body of a guitar, it works properly only
when it is set within the vibration of this surface, and it is an element of Mounting also removes
what is needed for support. An exemplary aspect of the transducer of the present invention
includes a conventional electrical pick-up and applies a strike such as a drum to the vessel 1-n 9
o'clock also with suitable mounting means and drum head or vibrating surface to attach the pickup The sound reproduction is a book that can reproduce high frequency portions of the audible
sound, such as plastic strokes, since it includes interpolated field influences under positive
pressure.
Adjacent to the far side of the pickup is an additional field effect metal which can be trapped but
free to vibrate-it is set within the vibration of the transducer. However, since the vibration of the
body 4 and the vibration pattern of the pickup are different, a signal generating cap necessary
for relative movement between the two can be obtained. Since this time, which is limited to this
parameter, is related to the low frequency part of the drum's audible sound, the corresponding
drum sound is easier to create. Thus, the transducer of the present invention faithfully
reproduces the entire range of the instrument that has been formed and attached to the
transducer cap, and further excludes extraneous sounds. This is because such extraneous sounds
are not 1 & 1 produced by the vibrating surface of the instrument. The above description, other
objects, features and advantages will become apparent as the following description proceeds. き
ゝ。 Before describing the present invention with reference to the drawings, in FIG. 1 and FIG. 2,
the symbol α 符号 is shown as a whole of the converter metal. This converter 0υ includes a
conventional electrical big end tube 1121 a − having a turn and an south pole piece 141 and 1
′ ′ (1 G, respectively). North and South Pole strips (+4) and (1, 61) are effective in creating
magnetic fields as is well known. As another example of the permanent magnets a4 and Qυ as
the north and south pole pieces (I4) and ae, electromagnets, not shown, can be used. It is because
what is necessary is to create a magnetic field. Electrical pickup (121 ta, including 17
conductors). Since this conductor is wound in the direction associated with the @ field of the pole
pieces a4 and ae, any movement in this magnetic field will traverse the coil (111, since it will be
wound as 18). Therefore, in this case, an electrical signal is generated in the coil assembly 8. The
coil (11 has a conductor conductor a and a (221). The second lead wire (i) and the second lead
wire are electrically connected to a sound reproducing device necessary for converting an
electric signal such as an amplifier and a speaker into a musical tone. The tone reproduction
device is associated with the musical tone of the instrument provided with the converter a1.
EndPage: 2 percussion instrument 1241 is like a drum, but the present invention is limited to its
use in percussion instruments such as this drum, other types of drums, cymbals, etc. It can also
be used for other percussion instruments having a vibrating surface to be generated. The
conventional electric pickup 0z is limited to the above-described configuration, for example, the
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above-mentioned single coil α barrel is oppositely wound in a “hambag-swing” relationship
and is composed of [LfC 2 coils] Such variations are also conceivable.
In the present invention, the transducer (1) is mounted directly on the drum [2411C so that it
can be set in the vibration while playing this instrument. In this example, the drum surface (26),
the peristaltic surface oscillator 42, is set within the vibration at the time of vibration. In order to
achieve this purpose, an L-shaped mounting bracket (28 It-is provided). The chest turns between
the vertical sides of the bracket sediment are appropriately fixed to the mounting plate C33 by
welding, for example. The mounting plate +32 is screwed or connected to the upper rim of the
drum as shown. The bracket (outside leg between the other horizontal sides of 281) is fully
extended to form a gap above the peripheral area of the ram head (i). The importance of this gap
(1) will be described later. Transducer 0 @ has a generally cup-shaped outer body (4G). The side
wall (42 is appropriately sized and housed at the end of the electrical pickup a'at-. It should be
noted that the body (closed end wall of 4G (441 is spaced from the top surface mark of the pickup (121 and forms an internal chamber (481 between wall 441 and surface (461)). In the inner
chamber (481, a cylindrical puff-shaped body t5G made of a perforated elastic material such as a
conventionally known sponge or the like is disposed. This body 61 is divided into two parts-and.
They are adhesively fixed around them, as shown in (a) in the figure. Before bonding the one half
(F + 2) and the half, the equal half width and the middle part of (2) are removed, and when both
are glued at the periphery as described above, a chamber (581- create. In this inner chamber 1),
a generally circular magnetic body or means J made of iron or other similar iron is arranged. This
magnetic body &) can influence the magnetization ifL and the magnetic body n, which is one or
more magnets. The middle part (2) of one half (2) is t-g disposed between the pickup <121 and
the magnetic substance phrase, but the original part is extended and the pole piece (magnetic
substance to the magnetic substance U by 141 and α 0 Stop bycatch. In this middle part) is not
so broad as to remove the magnetic substance − from the magnetic field produced by the pole
piece 0 and (16) at the same time, and the arrangement of the pickup az and the magnetic
substance by the pickup α 2 The magnetic material is selected so as to be disposed in the
magnetic field. An electrical pickup with an electrical pickup .alpha.2, but another magnetic body
or means is disposed on the magnetic body--a side farther from the magnetic body. Since this
magnetic substance ~ is electrically insulated n by a thin layer can such as felt paper, it does not
directly contact the pole pieces (141 and aω.
The father, this magnetic body̶is placed exactly between the electrical pick-up side and the
drumhead or vibrating surface 1261. For example, if magnetic bodies such as magnetic bodiesand-move in the magnetic field when the electric pickup (1z moves, or if the pickup a2 moves
relative to both the magnetic bodies, etc.) The body affects the magnetic field from the electrical
pickup. That is, the dye transfer is applied to the magnetic lines of force. This movement, on the
other hand, crosses the coil (181 "f so that it generates an" "X signal in the coil 0 frame. This
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electric signal is supplied to the amplifier through the lead C [-and 021, and is also supplied to
the other sound reproducing apparatus to faithfully reproduce the sound output of the drum Q4.
Important aspects and contributions of the present invention are as follows. That is, the lower
magnetic body and the electrical pickup a '! Relative vibrational motion between J is a vibrating
surface 1 '? While limited to the high frequency output of the mark, the relative mobility between
the other magnetic pole and the electrical pickup (121 is limited to the low frequency movement
of the vibrating surface (2G). Transducer 0 reproduces the entire range of audio (24J's audible
sound), including low frequency output as exemplified by the boom sound produced by striking
the drumhead (i), while the drumhead (i) plush Reproduce the high frequency output produced
by the stroke. The above-mentioned selective vibration of the lower magnetic body is achieved in
the directionality under the pressure of the transducer (10) with respect to the vibrating drum
head (a) as described above. That is, the upper end wall (EndPage: 3 storage body for the end
portion f □ of the suspended rod ffJ is held). This screw 'pJi (2) is screwed into the horizontal leg
C' week of the bracket I 281, as shown at 64. The screwed rod (72) is fixed to the upper end of
the screwed rod (f) and has adjustment of screwing of the screwed rod (c). Screwed tat? J?!
u!! Then, the electric pickup (the lower end of t21 is firmly crimped to the magnetic
substance-and Ws) and thus to the vibrating surface value. The pressure 'f used for this, suitably
chosen, assists the relative vibration, eg high frequency vibration, between the vibrating surface
QG1 and the electrical pickup (121. That is, when pressure is generated on the vibrating surface
9, the electrical pickup α2 is securely pressed against the peripheral portion of the vibrating
drum head as described above in the same manner as the vibration is detected. It senses the
same level of vibration.
The vibration thus sensed is effective to generate an electrical signal in the coil (so that a faithful
reproduction of the brush stroke applied to the drum head (2f) is possible. Low frequency
audible sound from drum CJ4) is converted to a corresponding electrical signal before the
subsequent amplification, shaking! The electrical pickups 0z and n vibrating together with the b
surface c2a are also converted to audible sounds again by the relative vibration of the upper
magnetic double-sided vibrating similarly. However, this is out of phase with the pickup 021.
That is, the vibration of the pickup α is set within the vibration of the body or elastic body 61.
This elastic body (5 * is an oversized room (, n arranged in a fine circle, its motion @ is on the
other hand set within the vibration of the magnetic phrase). This magnetic material is elastic 50!
Are arranged in the interior chamber mj. Furthermore, the role is well understood. However, the
above-mentioned vibration pattern generated in the magnetic material phrase is related to the
movement of high amplitude movement or low vibration surface value lA. The reason is that the
vibrational motion of the magnetic substance is effective for reproducing the low frequency
sound of the drum. As described above, the vibrating pickup (12i is set in the vibration of the
vibrating body (1. Method is interpreted in the same way as when a person rolls a die. Here, the
movement of the dice within the defined area of the human hand is related to all vl @ of the
human hand. The relative vibration between the magnetic material e1 and the rJf electric fishing
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pick-up O3 enables faithful reproduction of the low frequency audible sound of the tom 9 ram U.
Converter (if)! In the experiment, as the transparent body, ie the f4G housing, was used in
conjunction with the elastic i5G with a clear window, the vibration of the magnetic can can be
observed during the operation of the transducer (L Measure tt2. During this observation, the
vibration vI of the converter aQ1 is clearly seen, but the magnetic body (d) seems to be at rest / l
* a This observation reveals the following: 7to, ie, conversion During the movement of the organ,
in particular, the bones 61 between the drum surfaces, such vibration is set within the vibration
of the electric pickup a 21 and within the vibration of the magnetic body corresponding to
different vibration patterns Since the set name n, relative movement between the two was seen nl
This was related to the vibration of the moving surface. As a result of this relative movement, the
magnetic body governs the movement into the magnetic field of the pickup Cl21, while the cage
induces the induction of an electrical signal in the coil (11). This electrical signal is transmitted to
the sound reproduction expense via the lead wire and the device. The transducer for the guitar
will now be described with reference to FIGS. 3.4A, 4B and 5.
Of the reference numerals used in these drawings, reference numerals associated with FIG. 1 and
FIG. 2 indicate mutually related or identical parts. The major difference between this latter
example and the one described above is that the guitar (rd K, application G-n) includes a body
whose transducer θ 0 has a top sounding board 1 W or 4 bumps → 7 points. A neck (b) extends
from the body. At the end of this neck ■, a number of Betgu (e) are placed. A bridge is shown in
FIG. 3 where six guitars (seven strings of sand) are stretched between the tail end pieces (c) and
betgs (b). This t) has a ditch to properly separate the strings) and a proper gap from the surface
phrase) as well as having a ditch to properly separate the strings. Put in place. The first
embodiment for attaching the converter αG is shown in FIG. I will refer to the explanation. The
strings are located 17 in a bridge made of plastic or other nonconductive material. This bridge
02u is made of a non-conductive material such as wood. The bridge features extend through
openings in the surface (c) and are supported from below with a gap on the surface. In particular,
to arrange the operation) and (goods) in the bolt. These extend to the inside of the body ■ in
relation to the surface (c), and at the lower end of them, screw in the bolt ω and (d) to the
bracket (c) and endPage: 4 (102) and (104) are linked. As shown in Fig. 4A, the outer shell or cup
of the conversion port a1 is fixed to the bracket (ii) by the outer casing or cup-0t-welded or
otherwise fixed. As described in connection with. In this case, an elastic body 15 having a cup (a
chamber for a low frequency magnetic means, a body or a diaphragm in the 4c) is disposed. At
the other end, the converter αG comprises two pole pieces. One pole piece I of this pole piece is
illustrated as being in transverse relation to the longitudinal direction of the chord (i). An
insulating felt ply is placed just above these pole pieces, on which high frequency magnetic
means, body or diamond 7 ram are placed in an inserted gnfc form between the felt ply and the
bottom of the back bridge. n. To complete the configuration of the transducer 0 @ is to insert a
coil α 槌, this coil (18) has conductors or leads CI and a vessel through which electrical signals
can be transmitted to the sound reproduction device The vibration of the string (i) causes the
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bridge to correspondingly vibrate, thus vibrating the surface of the body.
In particular, it is transmitted to the diaphragm which is inserted between the bridge 6 and the
signal generation key converted into the bridge WEI +, and finally the 4 will generate the musical
instrument's high frequency tone. . In the mounting means of FIG. 4A, the pressure applying
bracket (281 is omitted as shown in the previous example). Because the diaphragm ■ is
mounted securely between the pick-up pole piece aa and the bridge unit n, this is a pole) G)
converter by O DD and H and a tension state with a string n and a tension K It is created by the
dependency position on the lower bias (106). When playing the guitar Q9, the vibration of one
string is transferred to the surface of the body 4n, while the transmission of the pickup body (41
is transferred to the converter in the same way as described for the inside of the drumhead
described above. Transmit effectively. In response to this vibration, the diaphragm button
vibrates, the vibration pattern of which is related to the vibration of the pickup body (4 (one but
different in one phase). This results in a relative movement between the diaphragm ... and the
magnetic field of the transducer αω resulting in a shift of the magnetic field, resulting in a coil a
sand (i 51 'signal being generated, this signal being the conductor or lead CI and (221 It is sent
to the amplifier through and sent to a later generation's regenerator. The diaphragm H is
effective to reproduce the low frequency noise of the guitar f) 6. Seven mounting devices will be
described with reference to the i4B drawing. This mounting device is completely the same as that
shown in FIG. 4 except for the following points. That is, the bridge is in this case made of metal,
so that this bridge is a book which effectively achieves the same purpose as the diaphragm. Thus,
in this example the diaphragm 1 can be omitted. For the sake of simplicity, the description of the
mode of operation of transducer OI in the mounting arrangement shown in FIG. 4B is not
repeated. The vibration of the bridge □□□ generated by the vibration of the string ■ is
effective for the reproduction of high frequency tones of the musical instrument, and the
diaphragm wheel is effective for faithful and accurate reproduction of the low frequency tones of
the musical instrument. In addition, it is set back to the vibration in the chamber of the elastic
pad 6-) which occurs when the pickup body cage is itself set in the vibration by the lifting surface
material. Another mounting example of the transducer 0 will now be described with reference to
FIG. As shown in the figure, it is arranged at a point where it is considered that the conversion 64
is arranged in the bridge). The upper part of the trL filter pickup, that is, one pole side projects
through the opening (JO8) of the body surface, which is in sound reproduction relation to the
two-string copper of the instrument, and this string- Between the rings, it extends into the gap on
the transducer 0ω.
The string button is made of gold or conductive material and is placed in the transducer (lω
magnetic field, It vibrated and 1! ! Is to obtain a sound reproduction signal directly in the pickup
coil αυ. In particular, this signal does not reproduce the musical instrument's high-frequency
tones, while the diaphragm wall in the chamber ml surrounded by the elastic wall (5) is set in the
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vibration pickup body (the vibration by 40). A7t, time is the reproduction f of the low-frequency
tone of the musical instrument. In this example, preferably the additional zeros (110) and (112)
are used to bolt transducer ボ ル ト 1 and bolt 鏝 1, as the hoop does not affect the lower
bearing force (106) for transducer 0I. Keep in a dependent position. The transducers 0 to 7
described by and fL have the feature that they can be mounted directly on the vibration table
EndPage: 5 of the musical instrument. This may be a small part, ie, either a permanent "magnet, a
coil or a magnetic material that affects the magnetic field, but it is mounted to be S-stop, and the
other part is mounted to vibrate with the surface. It is symmetrical to the conventional electrical
pickups. Thus, the present invention avoids the Jlf17c static attachment and problem with the
conventional ti-like Bic amp. Furthermore, it has the advantage that the transducer (1α greatly
improves the fidelity of the audible output of the instrument being reproduced, and furthermore
the placement of the audible sound is fully expanded. Furthermore, by changing the weight of the
magnetic phrase, the musical effect to be achieved is achieved. For example, if you use a large
weight of magnetic material, you can make a small cymbal and get a big one! ! It can be played as
a cymbal like a gong. Also, a small weight magnetic material ttot-for stool, can make a large
cymbal a low frequency one, and by using a large weight magnetic material-rattle, to give a
keratrel drum effect to a small drum Can. The use of the above-mentioned converter aO does not
have to be limited to drums, guitars, etc. For example, it can be applied to a sound-producing
plate such as a piano, and the sound of the sound can be electrically reproduced. The transducer
αω can be operated directly by the vibrating surface or body of the instrument to reproduce the
sound of the instrument. The present invention is different from the conventional microphone
stop and is not affected by external noise. This can eliminate the need for a soundproofing studio
when recording music, and can remove the procedure to avoid disturbing external noise in the
record) "7-- '; f or dV code. It will be apparent to those skilled in the art that many variations can
be made without departing from the scope of the invention as described above.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a method of
generating musical tones of a drum according to the present invention and applying a converter
to the drum to show a case 7c, and FIG. 2 shows a structure M of the converter shown in FIG. ,
FIG. 3 is a perspective view of the case where the converter is applied to a stringed instrument,
FIG. 4A is a sectional view taken along line 4-4 of FIG. 3, and FIG. 4B is FIG. 4A. Fig. 5 is a
sectional view showing another mounting, and Fig. 5 is a sectional view taken along line 5-5 of
Fig. 3. In the figure, QG is a transducer, (12+ is a pickup, (141 and a are north and south pole
pieces, a9 // i coil, @ and (22 is a lead wire, 1241 is a drum, 1261 is a drumhead, C2H4 is
Plaques, ■ and (to) are the legs, (i) is the mounting plate, (the torso is the rim, 1411! Watery, (43
side wall, (441tj: end wall, ueh surface, (4F 1.6G butterfly body,-is a chamber, Ftj and-is a
magnetic body, e4 is a layer, a field is a storage body, (ha) Fi screw) Attached rod, V is a handle, f
[Available] is a guitar, a button is a body, lead is a vibrating surface, a book is a neck, e4 is a peg,
a ring is a tail end piece, a wholesale is a string, a bridge to a rat, a ring is an opening% -1 and
wheels are bolts, (ro) are brackets, (102) and (104) are nuts. Patent Assignee Gibson Inc. FIG. I
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EndPage: 6
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