Electronic harmonica based on MIDI technology
阅读说明：本技术 一种基于midi技术的电子口琴 (Electronic harmonica based on MIDI technology ) 是由 陈建辉 于 2020-07-26 设计创作，主要内容包括：本发明涉及一种基于MIDI技术的电子口琴。该电子口琴能按照常规口琴吹奏动作产生对应的MIDI数字化信号,可通过有线或无线方式传输到外部MIDI合成器、装置、手机或者计算机,也可以自身处理并发声。解决了口琴难以数字化的问题。(The invention relates to an electronic harmonica based on MIDI technology. The electronic harmonica can generate corresponding MIDI digital signals according to the playing action of the conventional harmonica, can be transmitted to an external MIDI synthesizer, a device, a mobile phone or a computer in a wired or wireless mode, and can also be processed and sounded by the electronic harmonica. The problem that the harmonica is difficult to digitize is solved.)
1. An electronic harmonica based on MIDI technology comprises a shell, a mouthpiece, an electronic screen, operation control keys, tone control keys, a USB interface, a USB cable, an internal control circuit board, a MIDI composite board, a sound output module, a wireless module, a gas pressure sensor, a gas channel adjusting screw, a battery and the like. The electronic harmonica is characterized in that the air pressure in each air channel is detected by an air pressure sensor and transmitted to an internal control circuit board, the internal control circuit board judges the suction and blowing actions and the corresponding force of each blowing hole to generate corresponding MIDI instructions, the MIDI instructions are synthesized and processed by a MIDI synthesis board and are sounded by a sound output module, or the instructions are transmitted to an external MIDI synthesizer, a device, a mobile phone or a computer through a USB cable or a wireless module and are processed and sounded externally.
2. The electronic harmonica based on MIDI technology as claimed in claim 1, wherein the pressure value of the air pressure sensor connected to each air channel is obtained by the internal control circuit board, the suction, blowing and no-action states of each blowing hole are judged according to the negative, positive and zero difference between the air pressure value of each air channel and the air pressure value of each air channel when the system enters the playing state, the suction and blowing force is judged according to the absolute value of the difference, the suction or blowing intensity change rate and whether the suction or blowing intensity change rate is in the effective range are judged according to the set sensitivity and intensity range, parameters such as tone, intensity and speed are formed, and the corresponding MIDI command is generated.
3. An electronic harmonica based on MIDI technology as claimed in claim 2, wherein the number of channels, the number of air pressure sensors, and the number of blowing holes of the blowing nozzle are set to 10, 12, 16, 24, etc. at the same time, so as to form different musical instrument forms such as a 10-hole blue-tone harmonica, a 10-hole chromatic harmonica, a 12-hole chromatic harmonica, a 16-hole chromatic harmonica, and a 24-hole polyphonic harmonica.
4. The MIDI-technology based electronic harmonica as claimed in claim 3, wherein the operation control keys are in the form of 5-direction keys, and the up-down and left-right directions can be used as a bending wheel and a tremolo wheel during the performance, thereby enriching the performance effect. In the setting process, the device can be used as a selection key and matched with a middle determination key to complete the setting of various parameters.
5. An electronic harmonica based on MIDI technology as claimed in claim 4, wherein the sound tones of the blowing holes of the blowing nozzle can be set, so that harmonica with different sound tone arrangement forms can be simulated.
6. An electronic harmonica based on MIDI technology as claimed in claim 5, wherein the generated MIDI commands can be transmitted to an external MIDI synthesizer, device, mobile phone or computer through a USB cable or wireless module according to the setting. The electronic harmonica is in different forms such as wired, wireless, wired + wireless and the like and is used.
7. An electronic harmonica based on MIDI technology as claimed in claim 6, wherein the battery can be charged by USB interface, or by internal battery.
8. An electronic harmonica based on MIDI technology as claimed in claim 7, wherein MIDI commands from the internal control board are processed, synthesized and outputted with sound by using a MIDI synthesizer board and a sound output module. When the two modules are configured, the internal control circuit board can output the MIDI instructions to an external MIDI synthesizer, a device, a mobile phone or a computer according to the setting, and also can output the MIDI instructions to a MIDI synthesis board, the MIDI synthesis board completes the synthesis processing of the MIDI instructions, and the sound output module outputs the sound. When these two modules are not configured, the MIDI instructions are sent directly to an external MIDI synthesizer, device, handset or computer.
9. An electronic harmonica based on MIDI technology as claimed in claim 8, wherein the USB interface and the cable or wireless module can transmit the MIDI instructions of the electronic harmonica to an external MIDI synthesizer, device, mobile phone or computer, and can transmit the instructions and information of the external MIDI synthesizer, device, mobile phone or computer to the electronic harmonica.
10. An electronic harmonica based on MIDI technology as claimed in claim 9, wherein the sound output module comprises an earphone output and a speaker output, and the sound is output to the earphone when the earphone is inserted and directly output to the speaker when the earphone is not inserted.
Technical Field
The invention relates to the field of musical instruments, in particular to an electronic harmonica based on MIDI technology.
Background
With the development and spread of computer-related technologies and MIDI technologies, many musical instruments (typically, pianos) are realized electronically based on the MIDI technologies. The electronic musical instrument can realize the audio digital control processing of tone, timbre and the like by following the unified MIDI protocol, and the connection of various musical devices, thereby facilitating the transmission and sharing of music. At present, the market is still lack of the electronic harmonica based on the technology.
Disclosure of Invention
The invention aims to provide an electronic harmonica based on MIDI technology. The electronic harmonica can generate corresponding MIDI digital signals according to the playing action of the conventional harmonica, can be transmitted to an external MIDI synthesizer, a device, a mobile phone or a computer in a wired or wireless mode, and can also be processed and sounded by the electronic harmonica. The problem that the harmonica is difficult to digitize is solved.
In order to achieve the above object, the present invention provides an electronic harmonica based on MIDI technology, which comprises a housing, a mouthpiece, an electronic screen, an operation control key, a tone control key, a USB interface, a USB cable, an internal control circuit board, a MIDI synthesis board, a sound output module, a wireless module, a pressure sensor, a gas channel adjusting screw, a battery, and the like. The shell packages the blowing nozzle, the electronic screen, the operation control key, the tone control key, the USB interface, the internal control circuit board, the MIDI synthesis board, the sound output module, the wireless module, the air pressure sensor, the air channel adjusting screw, the battery and the like to form an independent device. The internal control circuit board is connected with modules such as an electronic screen, an operation control key, a tone control key, an air pressure sensor, a MIDI composite board, a wireless module, a battery and the like. The electronic screen, the air pressure sensor, the internal control circuit board, the MIDI synthesis board, the sound output module, the wireless module and the like are powered by batteries. The USB interface and the USB cable can be connected with an internal control circuit board, and can charge a battery or perform signal transmission in a wired mode. The electronic screen is connected with the internal control circuit board and used for displaying human-computer interaction information. The operation control key is connected with the internal control circuit board and can transmit a setting or control instruction to the internal control circuit board through the operation control key. The tone control key is connected with the internal control circuit board, and can transmit rising tone or other playing instructions to the internal circuit board through pressing actions. The MIDI synthesis board is connected with the internal control circuit board and the sound output module, processes the MIDI instructions from the internal control circuit board, synthesizes the sound and outputs the sound through the sound output module. The wireless module is connected with the internal control circuit board and provides a wireless communication mode to transmit signals to the outside. The plurality of air pressure sensors are respectively connected with the air channels and the internal control circuit board, sense the air pressure value during playing through the air channels and transmit the air pressure value to the internal control circuit board. The gas channel adjusting screws are respectively connected with each gas channel, and can adjust the resistance of gas entering and exiting the gas channels. The blowing nozzle is connected with the shell, can be integrated in structure or separated, and brings the air flow during blowing into the corresponding air channel through the blowing holes in the blowing nozzle. The internal control circuit board monitors pressure values from the air pressure sensors, identifies suction and blowing states and corresponding force of blowing holes of the blowing nozzle according to the pressure values, generates corresponding MIDI instructions according to identification results, is synthesized and processed by the MIDI synthesis board and produces sound by the sound output module, or transmits the sound to an external MIDI synthesizer, a device, a mobile phone or a computer through a USB cable or a wireless module for external processing and sound production.
Preferably, the internal control circuit board obtains pressure values of the air pressure sensors connected with the air channels, judges the air suction, air blowing and no action states of the air blowing holes according to the fact that the difference between the air pressure values of the air blowing holes and the air pressure values of the air blowing channels in the playing state of the system is negative, positive and zero, judges the air suction and air blowing strength according to the absolute value of the difference, judges the air suction or air blowing strength change rate and whether the air suction or air blowing strength change rate is in an effective range according to the set sensitivity and strength range, forms parameters such as tone, strength, speed and the like, and generates a corresponding MIDI command.
Preferably, the number of the channels, the number of the air pressure sensors, the number of the blowing holes of the blowing nozzle and the like can be set to be different values such as 10, 12, 16, 24 and the like, so that different musical instrument forms such as a 10-hole blue-tone harmonica, a 10-hole chromatic harmonica, a 12-hole chromatic harmonica, a 16-hole chromatic harmonica, a 24-hole polyphonic harmonica and the like can be formed.
Preferably, the operation control keys are in a 5-direction key form, and the up-down direction and the left-right direction can be used as a bending tone wheel and a tremolo tone wheel in the playing process, so that the playing effect is enriched. In the setting process, the device can be used as a selection key and matched with a middle determination key to complete the setting of various parameters.
Preferably, the sound tones of the blowing holes of the blowing nozzle can be set, so that harmonica with different sound tone arrangement forms can be simulated.
Preferably, the MIDI commands may be transferred to an external MIDI synthesizer, device, cell phone or computer through a USB cable or wireless module according to the setting. The electronic harmonica can be formed into different forms such as wired, wireless, wired + wireless and the like and use forms.
Preferably, the battery and the USB interface may be combined to form different forms of USB interface power supply, USB interface charging power supply + battery power supply, and the like.
Preferably, the MIDI synthesis board and sound output module processes, synthesizes and outputs MIDI commands from the internal control board. When the two modules are configured, the internal control circuit board can output the MIDI instructions to an external MIDI synthesizer, a device, a mobile phone or a computer according to the setting, and also can output the MIDI instructions to a MIDI synthesis board, the MIDI synthesis board completes the synthesis processing of the MIDI instructions, and the sound output module outputs the sound. When these two modules are not configured, the MIDI instructions are sent directly to an external MIDI synthesizer, device, handset or computer.
Preferably, the USB interface and the cable or wireless module may transmit the MIDI instructions of the electronic harmonica to an external MIDI synthesizer, device, mobile phone or computer, or may transmit the instructions and information of the external MIDI synthesizer, device, mobile phone or computer to the electronic harmonica.
Preferably, the sound output module comprises an earphone output and a loudspeaker output, wherein the sound is output to the earphone when the earphone is inserted, and the sound is output directly to the loudspeaker when the earphone is not inserted.
The electronic harmonica based on the MIDI technology has the following advantages that:
1. the mouthpiece (and the tone control keys) are completely consistent with the traditional chromatic harmonica, and the playing mode of a player does not need to be changed;
2. the MIDI technology is adopted, the MIDI standard is followed, the device can be connected with a plurality of MIDI software and hardware, a plurality of parameters such as tone, timbre and the like can be set, and the device has expandable and abundant expressive force;
3. the 5-direction keys are utilized to form the bending tone wheel and the vibrato wheel, so that the tone and the overtone can be controlled in the playing process, and the playing effect is enriched;
4. the external MIDI synthesizer, the device, the mobile phone or the computer can be connected through wires or wirelessly, internal MIDI synthesis and sound output can be selected, and the playing forms are flexible and various;
5. the earphone can be inserted during the playing process, so that the playing effect can be heard by the user, and the interference to other people can be prevented;
6. the playing process can be digitally recorded, so that the playing process is convenient to reproduce;
7. the device can be matched with a mobile phone or a computer to play and practice the MIDI melody from the outside;
8. the simulation of a blue-tone harmonica, a chromatic scale harmonica and a polyphonic harmonica can be carried out by setting the tones of each blow hole without changing the physical structure;
9. the internal parameters of the electronic harmonica can be adjusted by using the mobile phone APP, and also can be adjusted by using 5 direction keys on the harmonica, so that the electronic harmonica is flexible and various;
10. the harmonica function can be upgraded in a firmware upgrading mode, so that the harmonica has the continuous rich and expanded capability;
11. the system can be connected with the Internet through a wired or wireless external mobile phone and a computer, and information fusion of players, playing music, playing skills, playing resources and the like is formed.
Drawings
FIG. 1 is a schematic diagram of modules of the present invention. Wherein the
Fig. 2 is a schematic structural diagram in
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Fig. 5 is a schematic structural diagram in
Fig. 6 is a schematic structural diagram in
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Fig. 12 is a schematic structural diagram in
Fig. 13 is a schematic structural diagram in
In the figure, 1, a shell, 2, a blowing nozzle, 3, an electronic screen, 4, an operation control key, 5, a tone control key, 6, a USB interface and a USB cable, 7, an internal control circuit board, 8, a MIDI synthesis board, 9, a sound output module, 10, a wireless module, 11, an air pressure sensor, 12, an air channel, 13, an air channel adjusting screw and 14, a battery are arranged. The dashed portions are shown inside the housing or obscured by view.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
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