Percussion instrument-based sound-electricity recording equipment and electricity-sound equipment

Abstract

An acoustic-electric sound recording device and an electric-acoustic sound device based on percussion instruments are formed by transforming a pair of original percussion instruments with the same material attribute, one of the percussion instruments serves as the acoustic-electric sound recording device, and the other percussion instrument serves as the electric-acoustic sound device. On an acoustic-electric recording device, a plurality of microswitches are installed on the portion, making contact with the percussed instrument, of the percussion stick when the percussion stick is knocked, the microswitches are connected in parallel and then connected to the position of a column pole microphone in a recording circuit, the column pole microphone is replaced with the microswitches connected in parallel, and therefore the column pole microphone is replaced by the microswitches connected in parallel. The recording circuit records the next electric pulse signal whenever the percussion rod contacts the percussed instrument. When a percussion instrument needs to be played, the electro-acoustic sound equipment is applied, the stepping motor is driven through the playback circuit, the percussion rod is used for knocking the percussion instrument body, the original percussion mode is simulated, and the generated sound is completely restored to the original sound.

Description

Technical Field

[0001] This invention relates to an audio device, specifically, to a percussion instrument-based acoustic-electric recording device and an electro-acoustic device. Background Technology

[0002] Percussion instruments are instruments that produce sound by striking, shaking, rubbing, or scraping. They are divided into membranophones and idiophones. Membranophones, such as drums, are played with metal mallets, wooden mallets, leather mallets, or other percussion tools. Idiophones include gongs, cymbals, wooden clappers, cymbals, tinkling bells, and wooden fish. The drumstick, as the core playing tool of a percussion instrument, consists of three parts: the head, the shaft, and the tail. It is mainly made of wood, with the head being a single piece of wood or covered with felt or other soft materials using knitted fabric. The handle of a gong is usually a long wooden or bamboo handle, and the head is covered with rubber, felt, or cork using knitted fabric. The head of a wooden clapper is uncovered. Percussion instruments have a strong sense of rhythm and are used to control the beat of music and enhance its dynamism. Current electronic audio equipment relies on loudspeakers, lacking the characteristics of traditional sound-producing equipment; the timbre of loudspeakers is far inferior to that of authentic percussion instruments. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of electroacoustic devices in lacking the characteristics of original sound-producing devices, and to make the sound of percussion instruments more realistic than existing sound systems. This invention proposes to provide a sound-to-electric recording device and an electro-acoustic sound device based on a percussion instrument. The technical solution adopted by this invention to solve its technical problem is: a sound-to-electric recording device and an electro-acoustic sound device based on a percussion instrument, wherein the percussion instrument consists of independent percussion rods and the instrument body being percussed. The percussion rods are cylindrical in shape, and the percussed instrument is such as a drum, gong, or xylophone. The sound-to-electric recording device and the electro-acoustic sound device are a pair modified from two original percussion instruments with the same material properties; one serves as the sound-to-electric recording device, and the other as the electro-acoustic sound device. In an acoustic-electric recording device, several microswitches are installed at the points where the percussion stick contacts the percussion instrument when struck. These microswitches are connected in parallel and then connected to the cylindrical microphone positions in the recording circuit. The cylindrical microphones are replaced by these parallel microswitches, so that each time the percussion stick contacts the percussion instrument, the recording circuit records an electrical pulse signal. For instruments such as two-handed drumming, where the percussion sticks are held in both hands, the microswitches of the two percussion sticks are connected in parallel and then connected to the positions of two cylindrical microphones in the recording circuit, recording a two-channel electrical pulse signal. Similar to recording dual-channel audio signals, the dynamic rhythm of percussion instruments is recorded using a storage medium such as a USB flash drive for later use. When the percussion instruments need to be played, the aforementioned electro-acoustic device is used. The electro-acoustic circuit of the electro-acoustic device consists of a playback circuit, a pulse crossover, a pulse control circuit, and a stepper motor drive circuit. In addition to the pulse signal, the input signal of the electro-acoustic circuit also includes an intensity signal, which is the original audio signal of the percussion instrument. This intensity signal is recorded simultaneously with the pulse signal from the percussion sticks by the recorder of the electro-acoustic recording device. The intensity signal has three levels: high, medium, and low, and has an adjustable knob to control its intensity. The intensity signal controls the running sequence of the stepper motors: when the input intensity signal is a low signal, each input pulse signal controls the first stepper motor to quickly rotate clockwise by one angle from the starting angle and then quickly reverse back to the starting angle. When the input intensity signal is a medium signal, each time a pulse signal is input, the first and second stepper motors are controlled to quickly rotate forward by one angle from the starting angle and then quickly reverse back to the starting angle; when the input intensity signal is a large signal, each time a pulse signal is input, the first, second and third stepper motors are controlled to quickly rotate forward by one angle from the starting angle and then quickly reverse back to the starting angle.The rotation angles of the first, second, and third stepper motors are adjustable, all controlled within the range of 0° to 120°. The first, second, and third stepper motors drive one percussion bar via a speed-changing mechanism, and the percussion instrument is mounted on the striking part of the percussion bar. For example, a two-handed drumming device, where the percussion tool is held in both hands, has a dual-channel electro-acoustic circuit driving two stepper motors. The corresponding electro-acoustic device has two percussion bars, and the percussion instrument emits sound from the percussion bars held in both hands. A spring plate or spring is connected in the middle of each percussion bar in the electro-acoustic device. The electro-acoustic device holding the percussion bars is preferably a robot, with the first stepper motor mounted on the wrist, the second stepper motor mounted on the elbow / wrist, and the third stepper motor mounted on the shoulder. Alternatively, it can be a three-section lever with the first, second, and third stepper motors fixedly mounted. For percussion instruments such as cymbals that produce sound by striking their two parts together, the microswitch is installed on one side of the cymbal in the acoustic-electric recording device. On one side of the device, the percussion bar is replaced with the cymbal, and the percussion instrument is replaced on the other side. A small spring is fixed above the microswitch button on the percussion bar, and a small plane is fixed above the spring. The plane is parallel to the direction of the microswitch button, and its size is the same as the button's size. The gaps between the microswitches are filled with wood or chemical material, the height of which is lower than the small plane, so that when the percussion bar strikes the percussion instrument, the microswitches can switch on and off without being damaged. Alternatively, a reed switch or Hall effect sensor can be used instead of the microswitch, and the outer surface of the percussion instrument is coated with a magnetic material.

[0004] The working principle of this invention is as follows: Currently, domestic and international audio equipment for reproducing the original sound is based on electro-acoustic principles, lacking the characteristics of the original sound-producing equipment. For example, although the accompanying instruments in large concerts are expensive, electro-acoustic equipment produces sound from loudspeakers. The voice coil drives the diaphragm of the loudspeaker to vibrate, compressing the surrounding air. Because the direction of the loudspeaker's voice coil vibration is unidirectional, the emitted sound is a plane wave in one direction, lacking a sense of depth, and easily distinguishing the sound from loudspeaker output. To reproduce the original timbre of percussion instruments, this invention uses materials with the same properties as the original percussion instruments and imitates the original striking method, thus completely reproducing the original sound. A concert may use multiple percussion instruments; this invention corresponds to instruments with different timbres.

[0005] The beneficial effects of this invention are: the percussion stick and the percussion instrument are made of the same materials as the original percussion instruments, and the original percussion method is imitated, so that the sound produced is completely reproduced as the original sound. This overcomes the defects of current loudspeaker amplification, such as lack of stereo effect and large distortion, and saves a lot of manpower and concert costs. Attached Figure Description

[0006] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0007] Figure 1 This is a schematic diagram of the percussion bar in an acoustic-electric recording device, taking a drum as an example.

[0008] Figure 2 This is a diagram showing the position of the microswitch connected in parallel in the recording circuit to replace the pole microphone.

[0009] Figure 3 This is a block diagram illustrating the circuit principle of a stepper motor controlled by pulse and intensity signals.

[0010] Figure 4 This refers to an electro-acoustic device, taking a drum as an example.

[0011] Figure 5 This refers to an electro-acoustic device, exemplified by a gong.

[0012] Figure 6 This is a schematic diagram of an electro-audio device with a robot-like appearance, according to the present invention.

[0013] In the diagram: 1. Drumstick; 2. Microswitch; 3. Small spring; 4. Drum; 5. Gong; 6. First stepper motor; 7. Second stepper motor; 8. Third stepper motor. Detailed Implementation

[0014] The most common embodiment of this invention is a drum. Figure 1 This is a schematic diagram of the percussion bar in an acoustic-electric recording device, using a drum as an example. The percussion bar is commonly referred to as the drumstick 1. Several microswitches 2 are installed at the points where the drumstick 1 may come into contact with the drum. The microswitches 2 are connected in parallel, so that the recording machine can record the action of any one of the microswitches 2. Of course, Figure 1The drumstick 1 shown would puncture the drumhead if struck directly. To prevent this and to record percussion scores, a small spring 3 is fixed above the button of the microswitch 2. Above the spring 3 is a small flat surface, parallel to the direction of the microswitch button, and the same size as the button. The gaps between the microswitches are filled with wood or chemical material, the height of which is lower than the height of the small flat surface. This ensures that when the percussion stick of the acoustic-electric recording device strikes the percussion instrument, the microswitches can switch on and off without being damaged. Alternatively, reed switches or Hall effect sensors can be used to replace the microswitches, and the outer surface of the percussion instrument is coated with a magnetic material.

[0015] Figure 2 This is a diagram showing the position of the microswitch connected in parallel in the recording circuit to replace the pole microphone. Figure 2 The left figure is the circuit diagram of one audio input channel of the original recording circuit. Figure 2 The right-hand diagram shows a circuit diagram where a parallel microswitch replaces the cylindrical microphone. Of course, the R and C parameters in the left and right comparison diagrams may change. Thus, each time the percussion stick touches the percussion instrument, the recording circuit records an electrical pulse signal. When drumsticks are held with both hands and struck, the two drumsticks are connected to the dual-channel position of the microswitch in the recording circuit, and the recording circuit records the dual-channel electrical pulse signal. If the original recording circuit does not use a cylindrical microphone (e.g., a voice coil microphone), the circuit can be slightly modified to achieve the desired function.

[0016] Figure 3 This is a block diagram illustrating the circuit principle of a stepper motor controlled by pulse and intensity signals. The pulse signal originates from the signal recorded after the microswitch 2 is activated, and the intensity signal comes from the audio recording signal of percussion music. The adjustable angle is achieved through manual settings of the audio equipment. The remote control receiver module can (start / stop) or (pause) the audio equipment, which is crucial for directors or singers to handle unexpected situations on set. Remote control methods include infrared, wireless, and Bluetooth. The pulse and intensity signals are input to the core control logic module of a PLC or microcontroller. The core control chain is "input signal conditioning → core control unit → stepper motor drive → actuator," achieving stepper motor motion control based on the intensity signal level (large, medium, small) and the pulse signal.

[0017] Figure 4 Electro-acoustic equipment, taking drums as an example. Figure 5 This is an electro-acoustic device using a gong as an example. Next to the drum 4 or gong 5, there are three levers, on which the first stepper motor 6, the second stepper motor 7, and the third stepper motor 8 are fixedly mounted. When... Figure 3Each pulse signal input controls the first stepper motor 6, the second stepper motor 7, and the third stepper motor 8 to rapidly rotate clockwise by one angle from the starting angle, and then rapidly reverse back to the starting angle. The specific operation of each of the three stepper motors is determined according to... Figure 3 The operation depends on the input signal strength level (large, medium, small). A small signal activates only the first stepper motor (6); a medium signal activates both the first stepper motor (6) and the second stepper motor (7); and a large signal activates all three stepper motors. The rotation angle of each stepper motor is adjustable. Figure 3 Adjustable angle setting. Figure 4 , Figure 5 It is a structural diagram with only one percussion bar. If two percussion bars strike the drum 4 or gong 5, another three-section lever is needed to fix three stepper motors to achieve this.

[0018] Figure 6 This invention relates to an electro-acoustic device shaped like a robot. The robot holds a drumstick 1 and strikes a drum 4. A first stepper motor 6 is installed on the robot's wrist, a second stepper motor 7 is installed on its elbow and wrist, and a third stepper motor 8 is installed on its shoulder. After the robot completes a long and difficult series of strikes, the audience will be impressed by the robot's "brain memory," unaware that it is playing a recorded USB signal, thus enhancing the artistic effect.

[0019] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sound-to-electric recording device and an electro-sound device based on a percussion instrument, wherein the percussion instrument consists of an independent percussion rod and a percussion instrument body, the percussion rod being cylindrical in shape, and the percussion instrument being such as a drum, gong, or xylophone, characterized in that: The aforementioned acoustic-electric recording device and electro-acoustic sound device are a pair modified from two original percussion instruments of the same material properties. One serves as the acoustic-electric recording device, and the other as the electro-acoustic sound device. In the acoustic-electric recording device, several microswitches are installed at the points where the percussion stick contacts the percussion instrument when struck. These microswitches are connected in parallel and connected to the cylindrical microphone position in the recording circuit. The cylindrical microphone is replaced by the parallel microswitches, so that each time the percussion stick contacts the percussion instrument, the recording circuit records an electrical pulse signal. For hands-on percussion instruments, such as two-handed drumming, the microswitches of the two percussion sticks are connected in parallel. The two post-amplitude microphones in the recording circuit are then connected to record the two-channel electrical pulse signals. Similar to recording two-channel audio signals, the dynamic rhythm of the percussion instruments is recorded using a storage medium such as a USB flash drive for later use. When the percussion instruments need to be played, the electro-acoustic device is used. The electro-acoustic circuit of the electro-acoustic device consists of a playback circuit, a pulse crossover, a pulse control circuit, and a stepper motor drive circuit. In addition to the pulse signal, the input signal of the electro-acoustic circuit also includes a strength signal, which is the original audio signal of the percussion instrument. This strength signal is recorded simultaneously with the pulse signal from the percussion instruments by the recorder of the electro-acoustic recording device. The intensity signal is divided into three levels: large, medium, and small, and the intensity signal has an adjustable knob to control its magnitude. The intensity signal controls the running sequence of the stepper motors: when the input intensity signal is a small signal, each input pulse signal controls the first stepper motor to start from the initial angle, quickly rotate clockwise by one angle, and then quickly reverse back to the initial angle; when the input intensity signal is a medium signal, each input pulse signal controls the first and second stepper motors to start from the initial angle, quickly rotate clockwise by one angle, and then quickly reverse back to the initial angle; when the input intensity signal is a large signal, each input pulse signal controls the first, second, and third stepper motors to start from the initial angle, quickly rotate clockwise by one angle, and then quickly reverse back to the initial angle; when the input intensity signal is a large signal, each input pulse signal controls the first, second, and third stepper motors to start from the initial angle, quickly rotate clockwise by one angle, and then quickly reverse back to the initial angle. Starting from an initial angle, it quickly rotates clockwise by one angle and then quickly reverses back to the initial angle; the rotation angle values ​​of the first, second, and third stepper motors are adjustable, all controlled within the range of 0° to 120°; the first, second, and third stepper motors drive one of the percussion rods through a speed-changing mechanism, and the percussion instrument is installed at the striking part of the percussion rod; a two-handed percussion tool, such as a two-handed drum, has a dual-channel electro-acoustic circuit driving two of the stepper motors, and the corresponding electro-acoustic sound device is equipped with two percussion rods, and the percussion instrument emits sound emitted by the two-handed percussion rods; a spring plate or spring is connected in the middle of the percussion rod in the electro-acoustic sound device;The appearance of the electro-sound device holding the striking stick is preferably that of a robot, with the first stepper motor installed on the wrist, the second stepper motor installed on the elbow and wrist, and the third stepper motor installed on the shoulder; or a three-section lever with the first stepper motor, the second stepper motor, and the third stepper motor fixedly installed. For a percussion instrument such as a cymbal that produces sound by striking its two parts together, the micro switch is installed on one side of the cymbal on the acoustic-electric recording device; on the acoustic-electric recording device, the percussion stick is replaced on one side with the cymbal, and the percussion instrument is replaced on the other side.

2. The acoustic-electric recording device and electro-acoustic device based on percussion instruments according to claim 1, characterized in that: A small spring is fixed above the microswitch button on the percussion bar of the acoustic-electric recording device. A small plane is fixed above the small spring, and the direction of the small plane is parallel to the direction of the microswitch button. The size of the small plane is the same as that of the microswitch button. The gaps between the microswitches are filled with wood or chemical material, and the height of the filling material is lower than the height of the small plane, so that when the percussion bar of the acoustic-electric recording device strikes the percussion instrument, the microswitches can be switched on and off without being hit. The microswitches can be replaced with reed switches or Hall elements, and the outer surface of the corresponding percussion instrument is coated with magnetic material.

Images