close

Вход

Забыли?

вход по аккаунту

?

JP2017049386

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
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
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2017049386
Abstract: [Problem] To provide a sound generation control device capable of adjusting the
volume of a playing sound without losing the original timbre of the drum when playing a drum. A
sensor 13 is provided near the center of the back surface of a pad base 11. The sensor 13 detects
the vibration applied to the striking surface 101 of the pad 10, and outputs an output signal
corresponding to the vibration to the signal processing unit 17. The signal processing unit 17
performs various signal processing on the input output signal and outputs the processed signal
to the gain adjustment unit 18. The gain adjustment unit 18 adjusts the gain of the output signal
of the signal processing unit 17 and supplies the adjusted signal to the actuator 15 as a drive
signal. The actuator 15 is provided near the center of the back surface of the pad base 11 via the
insulator 14. The actuator 15 is driven according to the drive signal to vibrate and vibrate the
drum head 20 of the acoustic drum 2. [Selected figure] Figure 1
Pronunciation control device
[0001]
The present invention relates to a sound generation control device installed on a drum.
[0002]
The acoustic drum emits a sound as a vibration generated by the player striking the head of the
acoustic drum.
11-05-2019
1
On the other hand, the electronic drum converts the vibration generated by the player striking
the pad of the electronic drum into an electric signal, performs signal processing on the electric
signal, and emits the sound as a sound from a speaker or headphones. As an operation for
playing an acoustic drum or electronic drum, in addition to striking the head or pad, an operation
of rubbing the head or pad with a brush may be mentioned. These are all operations for
generating vibration in the head or pad, and hence performing these operations will be
generically referred to as "excitation" hereinafter.
[0003]
Acoustic drum performers often practice playing at a place where noise measures are taken, in
order to prevent noise from being generated and causing inconvenience to the surroundings.
This is because although the volume of the sound played on the acoustic drum can be adjusted
by adjusting the force at the time of exciting the head, if it is performed while adjusting the force,
it will be far from the original performance and it will not be a practice . As described above,
acoustic drums have a problem that places to play are restricted. On the other hand, the
electronic drum has no such limitation. This is because even if the pad of the electronic drum is
vibrated, the pad vibration does not generate a loud sound, and the volume of the speaker that
emits the performance sound is adjusted to a sufficiently low level, or the headphones are used.
Noise generation can be easily avoided. Therefore, various techniques have been proposed for
performing acoustic drum performance while simply taking measures against noise by replacing
the head of the acoustic drum with a pad of the electronic drum or placing the pad of the
electronic drum on the head of the acoustic drum. For example, Non-Patent Document 1 and
Non-Patent Document 2).
[0004]
U.S. Pat. No. 8,354,581 U.S. Pat. No. 8,018,781
[0005]
Pearl, Pearl ePro Live, search May 12, 2015, [online], <URL: http://www.e-prolive.com/> Rock oN
Show Report NAMM 2015 Day 2: NFUZD audio, 5 May 2015 March 12 Search, [online],
<http://www.miroc.co.jp/show-report/namm2015/archives/1563>
[0006]
11-05-2019
2
In general, the timbre of the playing sound is largely different between the acoustic drum and the
electronic drum.
Therefore, when playing an acoustic drum while taking measures against noise by the techniques
of Non-Patent Document 1 and Non-Patent Document 2, there is a problem that the original
timbre of the acoustic drum can not be obtained.
[0007]
The present invention has been made in view of the problems described above, and it is an object
of the present invention to provide a technique for adjusting the volume of a playing sound
without impairing the original timbre of the drum when playing the drum. With the goal.
[0008]
In order to solve the above-mentioned problems, the present invention is a drive signal based on
an output signal, a to-be-hit portion installed opposite to a striking surface of a drum, a sensor
outputting an output signal according to the vibration of the hit portion. And an actuator for
vibrating the striking surface according to the drive signal.
[0009]
According to the present invention, the sound emitted when the player vibrates the impacted
portion of the sound generation control device is the sound generated when the actuator of the
sound generation control device vibrates the head of the drum, that is, the drum Sound of
Therefore, according to the present invention, the original timbre of the drum is not impaired.
In Patent Document 1, there is a technology in which a sensor is provided in an acoustic drum,
the vibration generated by the player vibrating the head is converted by the sensor into an
electric signal, and the sound corresponding to the electric signal is emitted. It is disclosed.
Further, in Patent Document 2, a sensor is provided on a head serving as a striking surface of an
acoustic drum provided with heads on both surfaces of a shell, and an actuator driven according
to the sensor is provided on a head facing the head serving as a striking surface. A technique is
11-05-2019
3
disclosed that vibrates the facing head in response to the vibration detected by the sensor.
However, in the techniques disclosed in Patent Document 1 and Patent Document 2, no
consideration is given to noise to the surroundings, which is a technique completely different
from the present invention.
[0010]
As a more preferable aspect, it has an anti-vibration member in at least one of between a to-be-hit
part and an actuator and between a drum and a to-be-hit part. According to the aspect having the
vibration isolation member between the struck part and the actuator, the striked part is
prevented from vibrating due to the vibration of the actuator, and this vibration is detected by
the sensor to prevent the occurrence of howling. be able to. According to the aspect in which the
anti-vibration member is provided between the drum and the struck portion, it is possible to
prevent the drum from ringing when the player vibrates the struck portion.
[0011]
In a more preferable aspect, the signal processing unit adjusts the signal level of the drive signal.
According to this aspect, the strength with which the actuator excites the head of the drum is
fixed and adjustable according to the level adjustment of the drive signal in the signal processing
unit. Therefore, it is possible to adjust the volume of the playing sound without impairing the
original timbre of the drum.
[0012]
In a more preferable aspect, the signal processing unit reads out waveform data corresponding to
the output signal from the storage unit in which the waveform data is stored in advance, and
outputs it as a drive signal. According to this aspect, it is possible to widen the variation of the
timbre of the drum by the player vibrating the hit portion.
[0013]
FIG. 1 is a diagram of a sound generation control device 1 according to a first embodiment of the
11-05-2019
4
present invention. It is a figure which shows the installation aspect to the acoustic drum 2 of the
sound emission control apparatus 1. FIG. FIG. 6 is a diagram showing an operation of the sound
generation control device 1 of the same. FIG. 7 is a diagram showing an operation of the sound
generation control device 1 in the case where the signal processing unit 17 of the sound
generation control device 1 is used as a preamplifier 171. FIG. 8 is a diagram showing an
operation of the sound generation control device 1 in the case of using the signal processing unit
17 as the trigger detection unit 172. It is a figure for demonstrating the sound-production
control apparatus 4 of 2nd Embodiment of this invention.
[0014]
Hereinafter, embodiments of the present invention will be described with reference to the
drawings. First Embodiment FIG. 1A is a plan view of a sound generation control device 1
according to a first embodiment of the present invention. FIG.1 (b) is the perspective view which
looked at the A-A 'line cross section of Fig.1 (a). FIG. 2 is a view showing an installation mode of
the sound production control device 1 on the acoustic drum 2. The acoustic drum 2 is, for
example, a tom. The sound production control device 1 is a device which is installed on the
acoustic drum 2 and performs sound production control of the acoustic drum 2 in accordance
with the player's performance operation. The sound production control device 1 includes a pad
10, a pad base 11, a buffer material 12, a sensor 13, an insulator 14, an actuator 15, a signal
processing unit 17, and a gain adjustment unit 18.
[0015]
The pad 10 is, for example, a pad of an electronic drum, provided on a pad base 11 and having a
striking surface 101. The player of the acoustic drum 2 in which the sound production control
device 1 is installed performs a performance by vibrating the hitting surface 101. That is, the pad
10, together with the pad base 11, functions as a portion to be hit which receives the player's
hitting operation. A guide portion 110 is provided along the outermost periphery of the pad base
11 on the surface (hereinafter, back surface) opposite to the surface on which the pad 10 is
provided in the pad base 11. As shown in FIG. 1B, the cross section of the guide portion 110 has
a shape in which the center is indented, and the cushioning material 12 is spread over the
indented portion. As shown in FIG. 2, the pad base 11 is mounted on the acoustic drum 2 by the
guide portion 110 so that the cushioning material 12 and the hoop 21 of the acoustic drum 2 are
in contact with each other. Therefore, the sound generation control device 1 is installed on the
acoustic drum 2 with a space opened between the pad base 11 and the drum head 20 of the
acoustic drum 2. A fresh hoop 22 is formed on the drum head 20, and the drum head 20 and the
11-05-2019
5
shell 24 are fixed in a state where the tension can be adjusted by the hoop 21 and a
conventionally known lug and tuning bolt (not shown in FIG. 2). It is done. The guide portion 110
of the pad base 11 is for preventing displacement of the position of the sound generation control
device 1 installed on the acoustic drum 2 due to vibration caused by the player vibrating the pad
10. is there. Furthermore, the cushioning material 12 is for preventing the acoustic drum 2 from
ringing in response to the vibration of the pad base 11 caused by the player vibrating the pad 10.
[0016]
The sensor 13 is provided near the center of the back surface of the pad base 11. The sensor 13
detects the vibration applied to the striking surface 101 of the pad 10, and outputs an output
signal corresponding to the vibration to the signal processing unit 17. Specific examples of the
output signal include a waveform signal representing a vibration waveform and a control signal
representing the strength or timing at which the pad 10 is vibrated. The details will be described
in the operation of the sound generation control device 1. The signal processing unit 17
performs various signal processing on the input output signal and outputs the processed signal
to the gain adjustment unit 18. The gain adjustment unit 18 amplifies the output signal of the
signal processing unit 17 and supplies the amplified signal to the actuator 15 as a drive signal.
The player can adjust the gain in the gain adjustment unit 18 as appropriate. By adjusting the
gain in the gain adjusting unit 18, the sound volume can be adjusted more finely than the
adjustment of the sound volume of the acoustic drum 2 due to the player's force adjustment. In
the present embodiment, the signal processing unit 17 and the gain adjustment unit 18 are
software modules realized by the CPU of the sound generation control device 1. However, the
signal processing unit 17 and the gain adjustment unit 18 may be configured by analog circuits
or the like. .
[0017]
The actuator 15 is preferably provided near the center of the back surface of the pad base 11.
This is because the player of the acoustic drum 2 in which the sound generation control device 1
is not installed is generally excited to perform vibration near the center of the drum head 20, and
the actuator 15 is used as a pad base as in this embodiment. If it is provided near the center of
the back of 11, the actuator 15 can excite the drum head 20 at a position equivalent to the
position where the player generally vibrates, and the original tone of the acoustic drum 2 can be
obtained. It is from. The actuator 15 is driven according to the drive signal supplied from the
gain adjustment unit 18 to vibrate and vibrate the drum head 20 of the acoustic drum 2. That is,
11-05-2019
6
the drum head 20 functions as a striking surface that is vibrated by the actuator 15. The drum
head 20 is not in contact with anything other than the actuator 15. Since there is nothing to
inhibit the vibration of the drum head 20, the original tone of the acoustic drum 2 can be
obtained. Further, when the sound generation control device 1 is installed on the acoustic drum
2, the actuator 15 contacts the drum head 20 of the acoustic drum 2 at the end opposite to the
insulator 14 or the drum head 20 is placed on the opposite side to the insulator 14. It is provided
to push in about mm. Thus, by providing the actuator 15, the drum head 20 can be vibrated most
efficiently, and the original tone of the acoustic drum 2 can be obtained.
[0018]
The insulator 14 is a vibration isolation member, and is provided between the pad base 11 and
the actuator 15. The insulator 14 is for preventing the generation of howling due to the vibration
of the actuator 15 being transmitted to the sensor 13 through the pad 10. Further, in the present
embodiment, the vibration of the acoustic drum 2 is prevented from being transmitted to the pad
base 11 by the buffer material 12, so that the generation of howling due to the transmission of
the vibration to the sensor 13 is also prevented. The above is the configuration of the sound
generation control device 1.
[0019]
Next, the operation of the sound generation control device 1 will be described. As shown in FIG.
3, when the player vibrates the striking surface 101 of the sound generation control device 1
using, for example, the stick 3, the sensor 13 detects the vibration generated thereby, and an
output corresponding to the detected vibration. The signal is output to the signal processing unit
17. The signal processing unit 17 performs signal processing on the input output signal. There
are various types of signal processing for this processing, but as representative processing, two
types of processing are used: signal processing using the signal processing unit 17 as the
preamplifier 171 and signal processing using the signal processing unit 17 as the trigger
detection unit 172. There is signal processing. Each signal processing is described below.
[0020]
First, signal processing using the signal processing unit 17 as the preamplifier 171 will be
described. In this aspect, the output signal of the sensor 13 is a waveform signal representing a
11-05-2019
7
vibration waveform. FIG. 4 is a diagram showing the operation of the sound generation control
device 1 when this signal processing is performed. The sensor 13 outputs, to the preamplifier
171 as a waveform signal, a sensor waveform (that is, a vibration waveform) indicating the
strength with which the player vibrates the hitting surface 101 or the vibration caused by the
vibration. The preamplifier 171 amplifies the input waveform signal to a level suitable for
amplification by the gain adjustment unit 18 in the subsequent stage, and outputs the amplified
waveform signal to the gain adjustment unit 18. The gain adjustment unit 18 amplifies the
waveform signal input from the preamplifier 171 and outputs the amplified signal as a drive
signal to the actuator 15. The player can adjust the gain in the gain adjustment unit 18 as
appropriate. Therefore, if the amplification factor in the gain adjustment unit 18 is set sufficiently
low, even if the acoustic drum 2 on which the sound generation control device 1 is installed is
vibrated, a sound with a volume that causes noise to the surroundings is emitted. There is no
sound. The actuator 15 is driven by the input drive signal to excite the drumhead 20 of the
acoustic drum 2. The sound produced by the drive faithfully reflects the player's performance.
Specifically, the player's performance such as vibrating with the stick 3, rubbing with a brush,
vibrating with a finger is faithfully reflected on the musical sound by the drive of the actuator 15.
Furthermore, the sound produced by the drive of the actuator 15 reflects the resonance of the
drum head 20, the vibration of the shell 24, the acoustic radiation characteristics, and the like. In
particular, in this aspect, it is possible to reflect the sound rubbed with a brush that is difficult to
reflect in the performance sound of a normal electronic drum by the performance sound. In
addition, the tuning of the drum head 20 can be changed to reflect the change in timbre, and
muting can be added.
[0021]
Next, signal processing using the signal processing unit 17 as the trigger detection unit 172 will
be described. In this aspect, the output signal of the sensor 13 is a control signal indicating the
strength at which the player vibrates the striking surface 101 of the pad 10 or the timing. FIG. 5
is a diagram showing the operation of the tone generation control device 1 when such signal
processing is performed. In this aspect, the sound generation control device 1 includes a storage
unit 173 which is, for example, a ROM. Specifically, the storage unit 173 is a device that
constitutes a PCM sound source, and waveform data associated with the control signal is stored
in the storage unit 173 in advance. The sensor 13 outputs a control signal to the trigger
detection unit 172. The trigger detection unit 172 outputs the input control signal to the storage
unit 173. The storage unit 173 outputs waveform data corresponding to the input control signal
to the gain adjustment unit 18 as a waveform signal. The gain adjustment unit 18 amplifies the
input waveform signal and outputs it as a drive signal to the actuator 15 to drive the actuator 15.
The player can adjust the gain in the gain adjustment unit 18 as appropriate. The actuator 15 is
driven by the input drive signal to excite the drum head 20 of the acoustic drum 2. In this aspect,
11-05-2019
8
a sound corresponding to the prerecorded waveform data is acoustically emitted through the
resonance of the acoustic drum 2. That is, in this aspect, while utilizing the resonance of the
acoustic drum 2, the variation of the timbre can be expanded. The storage unit 173 may be an
external device of the sound generation control device 1.
[0022]
Signal processing may be performed such that the signal processing unit 17 is used as both the
preamplifier 171 and the trigger detection unit 172. In this aspect, the drive signal finally input
to the actuator 15 is based on the sensor waveform obtained by the sensor 13 and waveform
data recorded in advance. The actuator 15 vibrates the drum head 20 by the drive signal based
on the level adjusted by the gain adjusting unit 18. In this aspect, the variation of the tone is
further expanded than in the aspect in which the signal processing unit 17 is used as either the
preamplifier 171 or the trigger detection unit 172. The above is the operation of the sound
generation control device 1.
[0023]
With such a tone generation control device 1, when playing the acoustic drum 2, it is possible to
adjust the volume of the playing sound without impairing the original tone color of the acoustic
drum 2.
[0024]
Second Embodiment FIG. 6A is a plan view of a sound generation control device 4 according to a
second embodiment of the present invention.
FIG. 6B is a perspective view of the sound emission control device 4 installed on the snare drum
5, taken along line B-B ′ of FIG. 6A. FIG. 6C is a bottom view of the snare drum 5 on which the
sound generation control device 4 is installed, viewed from the side opposite to FIG. In FIG. 6, the
same components as those in FIG. 1 are denoted by the same reference numerals. The difference
between the sound production control device 1 and the sound production control device 4 is the
sensor 13 and the signal processing unit 17. Hereinafter, the sensor 13 and the signal processing
unit 17 will be mainly described. In FIG. 6, the signal processing unit 17 and the gain adjustment
unit 18 are not shown.
11-05-2019
9
[0025]
The sound production control device 4 is installed on the snare drum 5 unlike the first
embodiment. The snare drum 5 is provided with drumheads 20 on both sides of the shell 24 and
a snappy 50 on one side. A player of the normal snare drum 5 vibrates the drumhead 20 on the
opposite side of the drumhead 20 provided with the snappy 50 of the snare drum 5 so that the
playing sound is emitted from the snare drum 5.
[0026]
With such a tone generation control device 4, when playing the snare drum 5, it is possible to
adjust the volume of the playing sound without impairing the original timbre of the snare drum
5.
[0027]
<Modifications> (1) In each of the above embodiments, there may be a plurality of sensors 13
provided on the pad base 11.
The technology having a plurality of sensors 13 may use a technology having a plurality of
sensors 13 in an existing electronic drum.
[0028]
(2) In the above embodiments, the sound generation control device 1 and the sound generation
control device 4 are provided on the acoustic drum 2 and the snare drum 5, but may be provided
on other types of drums. The sound generation control device 1 and the sound generation
control device 4 may be installed on the electronic drum. In that case, the content of the signal
processing of the sensor 13 or the signal processing unit 17 may be changed according to the
drum to be installed.
[0029]
1, 4 ...... Sound production control device, 10: pad, 101: strike face, 11: pad base, 110: guide
11-05-2019
10
portion, 12: buffer material, 13: sensor, 14: insulator, 15: ... actuator, 17 ... signal processing unit,
171 ... preamplifier, 172 ... trigger detection unit, 173 ... storage unit, 18 ... gain adjustment unit,
2 ... acoustic drum, 20 ... drum head, 21 ... Hoop, 22: Fresh hoop, 24: Shell, 3: Stick, 5: Snare
drum, 50: Snoopy.
11-05-2019
11
Документ
Категория
Без категории
Просмотров
0
Размер файла
21 Кб
Теги
jp2017049386
1/--страниц
Пожаловаться на содержимое документа