CN111243558A

CN111243558A - Drum for dynamically adjusting intelligent tone loudness

Info

Publication number: CN111243558A
Application number: CN202010027190.1A
Authority: CN
Inventors: 孙永富
Original assignee: Jiamusi University
Current assignee: Jiamusi University
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-06-05

Abstract

The invention discloses a drum with intelligent tone loudness dynamic adjustment, which provides a drum kit and needs the following devices: the device comprises a regulating system consisting of a movable drum pad, a movable drum pad motor, an elastic plate and an elastic plate motor, and a detection system consisting of a sound sensor, a distance meter and an audio processor. The elastic plate is driven by an elastic plate motor to move up and down, and the movable drum pad is driven by a movable drum pad motor. The elastic plate motor is fixed at the drum box, and the movable drum pad motor is fixed at the drum bottom plate, and simultaneously the drum bottom plate is fixed with sound sensor and distancer. The elastic plate motor, the movable drum pad motor, the sound sensor and the distance measuring instrument are connected with the audio processor. The invention can realize intelligent real-time compensation of the drum set in the playing process of a song, intelligently judge and adjust the tone and loudness of drum sound, and realize the intellectualization of the drum set.

Description

Drum for dynamically adjusting intelligent tone loudness

Technical Field

The invention relates to the field of percussion instrument equipment, in particular to a drum structure for dynamically adjusting intelligent tone loudness and a design of an adjusting device.

Background

The musical instrument generally refers to a tool that can play a certain tone or rhythm through a certain means and through various methods. Generally, the music can be divided into orchestral music, stringed music, percussion music and the like; human beings express and communicate thought and emotion by various music through playing musical instruments; with the continuous richness of the spiritual world and the continuous development of the social civilization, more and more musical instruments are designed. The design of musical instruments is different from the design of common industrial products, and the musical instruments not only need exquisite appearance and good acoustic quality, but also have higher requirements on the service life of the musical instruments. For example, a drum kit is a percussion instrument developed in the 40 th of the 20 th century, and consists of a plurality of sets of drums, small cymbals and other parts, is widely popular due to strong rhythmic sensation and various playing skills, and particularly becomes an indispensable combined instrument in rock music and is highly popular with young people.

The pitch of a common drum set in a certain period of time can have certain deviation in the playing process, and for a player, the playing effect is influenced because the real-time adjustment cannot be carried out in the playing process. The loudness of drum sound is high or low for the perfection of the musical rhythm, and the requirement is high for a general player.

To solve the above problems, a drum for intelligent tone loudness dynamic adjustment is designed.

Disclosure of Invention

Technical problem to be solved

The invention provides a drum with an intelligent tone loudness dynamic adjustment function, which solves the problems that a drum kit cannot be adjusted in real time and cannot compensate tones in time in the playing process, and an intelligent system of the drum kit assists a player to knock out the changed tones and loudness in the playing process of a song.

(II) technical scheme

The technical scheme comprises a drum body, a distance meter, a sound sensor and an audio processor. The drum box in the drum body is made of wood materials, the drum surface is made of cow leather materials with high elasticity, and the drum surface is arranged on the drum box and fixed by a drum ring. The drum box is fixed with an elastic plate motor which is connected with an elastic plate supporting plate through an elastic plate motor connecting rod. The elastic plate supporting plate is a wooden plate with holes, and the elastic plate is fluffy cotton with holes. The movable drum pad supporting plate is made of wood, the movable drum pad is adhered to the supporting plate, and the movable drum pad is made of a common drum bottom surface material. The drum bottom plate is a wooden plate, and the drum bottom plate is provided with a sound sensor and a distance meter which are connected with an audio processor.

The elastic plate is made of fluffy cotton with holes.

The elastic plate motor and the movable drum pad motor are linear stepping motors.

A drum for intelligent tone loudness dynamic adjustment comprises the following specific steps:

step 1, connecting a device, wherein an audio processor is connected with a power supply, and an elastic plate motor and a movable drum pad motor are connected with the power supply;

step 2, connecting the elastic plate motor and the movable drum pad motor with an audio processor, and connecting the sound sensor and the distance meter with the audio processor;

step 3, converting the music score into a standard frequency spectrum, and introducing the standard frequency spectrum into an audio processor as a comparison file;

step 4, debugging the whole device to ensure normal connection among the components;

step 5, switching on a power supply, turning on switches of all instruments, and carrying out actual performance according to the standard frequency spectrum;

and 6, calling out data after the performance is finished, and analyzing the data.

(III) advantageous effects

After adopting the technical scheme, compared with the prior art, the invention has the following advantages:

1. in the using process of the drum kit, the intelligent system can adjust the tones in real time, and optimize the tones of the drum in the playing process of a song by a player, so that the played song is more beautiful.

2. In the using process of the drum kit, a player can adjust the loudness of drum sound according to the standard frequency spectrum when playing, and the player can knock different loudness to enhance the rhythm sense of the played music.

Drawings

FIG. 1 is a schematic view of the apparatus of the present invention.

In fig. 1: the device comprises a drum bottom plate 1, a drum box 2, a movable drum pad motor 3, a movable drum pad supporting plate 4, a movable drum pad motor connecting rod 5, a movable drum pad 6, an elastic plate motor 7, an elastic plate motor connecting rod 8, an elastic plate supporting plate 9, an elastic plate 10, a drum surface 11, a drum cavity 12, a sound sensor 13, a distance meter 14 and an audio processor 15.

Detailed Description

The embodiments are set forth to provide a better understanding of the inventive content of this patent, which is a part of the inventive content and is not intended to limit the inventive content, and the various devices in the embodiments are merely for illustration, understanding of the inventive content of this patent, and do not represent actual sizes and positions of the various devices relative to each other.

As shown in figure 1, the technical scheme of the drum and the accessories for the intelligent tone loudness dynamic adjustment is composed of a drum body, a range finder, a sound sensor and an audio processor. The drum box in the drum body is made of wood materials, the drum surface is made of cow leather materials with high elasticity, and the drum surface is arranged on the drum box and fixed by a drum ring. The drum box is fixed with an elastic plate motor which is connected with an elastic plate supporting plate through an elastic plate motor connecting rod. The elastic plate supporting plate is a wooden plate with holes, and the elastic plate is fluffy cotton with holes. The movable drum pad supporting plate is made of wood, the movable drum pad is bonded with the movable drum pad supporting plate, and the movable drum pad is made of common drum bottom surface material. The drum bottom plate is a wooden plate, and the drum bottom plate is provided with a sound sensor and a distance meter which are connected with an audio processor. The audio processor is connected with the movable drum pad motor and the elastic plate motor.

The sound sensor is capable of detecting the pitch and loudness of the drum sound in real time, digitally processing it with an audio processor, and comparing it to a standard frequency spectrum. The audio sensor selected in the embodiment is a TZ-2KA noise sensor. The sensor is built in a sound-sensitive electret condenser microphone. The sound waves vibrate the electret film in the microphone, resulting in a change in capacitance, which generates a minute voltage that changes in response thereto. The voltage is then converted into 0-5V voltage, the voltage is received by the collector through A/D conversion, and the voltage is transmitted to the audio processor, and the data processed by the audio processor can be compared with standard audio. The movable drum pad motor and the elastic plate motor adopt conventional stepping motors, and when the audio processor judges that the tone of the played audio has a descending or ascending trend relative to the standard audio in the playing process, the movable drum pad motor can be started to compensate the tone. The distance meter on the drum bottom plate can detect the distance between the movable drum pad and the drum bottom plate. In the process that the adjusting system adjusts the movable drum pad and the elastic plate, the audio processor can automatically store system adjusting data, such as time adjustment and distance adjustment, and the system can be conveniently checked.

The working principle of the technical scheme is as follows: before the drum set is played, the contrast duration can be set, namely, in the playing process, for the audio frequency in a specific time period, the audio processor can compare the audio frequency with the standard audio frequency in real time, the audio processor feeds back a signal processed by a comparison result to the motor, and the motor adjusts the movable drum pad according to the signal. The frequency of the drum sound is determined by the vibration speed of the drum head, so that the effect of changing the pitch of the drum sound can be achieved by changing the vibration speed of the drum head, such as changing the frequency of the drum sound by changing the size of the drum cavity. Because the air in the cavity also affects the vibration of the drum head, changing the size of the cavity can change the air column in the cavity, and further affect the vibration of the drum head, i.e. the tone of the drum sound can be changed by adjusting the size of the cavity. When the audio data comparison result detected by the audio processor shows that the tone of the drum sound shows a descending trend within a time period, the audio processor feeds back the result that the tone shows the descending trend to the motor in the form of an electric signal, and the motor pushes the movable drum pad to move upwards slightly so as to compensate the insufficient tone. When the audio data comparison result detected by the audio processor shows that the tone of the drum sound shows an ascending trend in a time period, the audio processor feeds back the result that the tone shows a descending trend to the motor in the form of an electric signal, and the motor pushes the movable drum pad to move downwards slightly so as to offset the part with overhigh tone.

The loudness of drum sound is related to the amplitude of the drum, and in order to change the amplitude of the drum, the amplitude is changed by mechanical contact. In the period of low loudness during playing, the elastic plate motor is started to push the elastic plate to move upwards, so that the vibration amplitude of the drumhead is reduced, and the loudness of drum sound is reduced. And in the moving process of the movable drum pad motor and the elastic plate motor, the adjustment can be carried out according to the real-time feedback signal of the audio processor. The time that the movable drum pad starts to be adjusted and the distance that the motor of the movable drum pad adjusts are recorded, data are reserved for a player, and the player can learn by himself conveniently.

Example 1

Step 1, connecting the device according to the figure 1, connecting an audio processor with a power supply, and connecting an elastic plate motor with a movable drum pad motor with the power supply;

step 5, switching on a power supply, turning on switches of all instruments, and carrying out actual performance according to the introduced frequency spectrum;

Claims

1. A drum for intelligent pitch loudness dynamics adjustment, comprising: the device comprises a drum body, a distance measuring instrument, a sound sensor and an audio processor. The drum box in the drum body is made of wood materials, the drum surface is made of cow leather materials with high elasticity, and the drum surface is arranged on the drum box and fixed by a drum ring. The drum box is fixed with an elastic plate motor which is connected with an elastic plate supporting plate through an elastic plate motor connecting rod. The elastic plate supporting plate is a wooden plate with holes, and the elastic plate is fluffy cotton with holes. The movable drum pad supporting plate is made of wood, the movable drum pad is adhered to the supporting plate, and the movable drum pad is made of a common drum bottom surface material. The drum bottom plate is a wooden plate, and the drum bottom plate is provided with a sound sensor and a distance meter which are connected with an audio processor, an elastic plate motor and a movable drum pad motor.

2. A drum for intelligent pitch loudness dynamics adjustment according to claim 1, wherein: the elastic plate is made of porous sponge, and the aperture range is 15-45 mm.

3. A drum for intelligent pitch loudness dynamics adjustment according to claim 1, wherein: the movable drum pad motor and the elastic plate motor are linear stepping motors.

4. A drum for intelligent pitch loudness dynamics adjustment according to claim 1, wherein: the sound sensor and audio processor may compare the pitch and loudness of the sound to pitch and loudness data of a standard spectrum.

5. A drum for intelligent tone loudness dynamic adjustment comprises the following specific steps:

step 1, connecting a device, wherein an audio processor is connected with a power supply, and a movable drum pad motor and an elastic plate motor are connected with the power supply;

step 2, connecting the movable drum pad motor, the elastic plate motor, the sound sensor and the infrared distance meter with the audio processor;