CN117612503A

CN117612503A - Electronic harmonica

Info

Publication number: CN117612503A
Application number: CN202311421570.3A
Authority: CN
Inventors: 孙辉
Original assignee: Chengdu Mozka Technology Development Co ltd
Current assignee: Chengdu Mozka Technology Development Co ltd
Priority date: 2023-10-31
Filing date: 2023-10-31
Publication date: 2024-02-27

Abstract

The invention discloses an electronic harmonica musical instrument, which is characterized in that note information is obtained by pressing a digital matrix keyboard of a piano key arrangement mode, a mouthpiece air pressure value sampled by an air pressure sensor is matched for sound intensity adjustment, signals obtained by the two are converted into performance parameters through a microprocessor, and then the performance parameters are converted into audio signals through a sound source synthesizer to be output for realizing the performance of tone colors of various musical instruments. The invention has the advantages of simple learning, rich tone and strong expressive force, and can realize harmony and chord playing through multi-key combination, and the invention can be widely applied to the fields of music playing, music creation, music education popularization and the like.

Description

Electronic harmonica

Technical Field

The invention belongs to the technical field of music appliances, and particularly relates to an electronic harmonica.

Background

A conventional accordion is a portable air instrument that produces sound by vibration of air flow. When a player blows, the air flow passes through the sound groove, so that the reed in the groove vibrates. The vibration of the reed produces sound, and the length and tension of the reed are different for different sound grooves, so that sounds of different pitches can be produced. The voice box has the problems of single tone color, great breath control difficulty, incapability of directly outputting sound to the voice box and the like.

Disclosure of Invention

In order to solve the above problems, the present invention provides an electronic harmonica, which mainly uses an air pressure sensor to detect air pressure generated by an air pressure blowing hole of the electronic harmonica, and converts a note determined by combining air pressure change with a key into a performance parameter through a microprocessor, and then converts the performance parameter into an audio signal through a sound source synthesizer, thereby realizing the performance purpose of a digital musical instrument; the electronic organ provided by the invention can realize tone playing of various musical instruments of the organ, reduce breath control difficulty, output sound to a sound box and other functions through the audio output port, thereby becoming a complete digital musical instrument.

In order to achieve the above purpose, the invention adopts the following technical scheme: the electronic organ comprises an organ body, a mouthpiece, an air pressure channel, an air pressure sensor, keys, a microcontroller, a sound source synthesizer and an audio amplifier;

the electronic harmonica body comprises a mouthpiece, the mouthpiece is connected to an air pressure sensor through an air pressure channel, the air pressure sensor is connected to a microprocessor, and meanwhile, the key is connected to the microprocessor.

Acquiring a key code through a key and acquiring an air pressure value through an air pressure sensor; converting the key code into note information through a microprocessor, and converting the air pressure value into a control parameter of sound intensity; and after being processed by the sound source synthesizer, the audio signal is output through the audio amplifier to complete real-time playing.

Further, the electronic harmonica further comprises operation keys and a display screen; the operation keys and the display screen are arranged on the harmonica, and a man-machine interface formed by the keys and the display screen realizes the function adjustment operation of the harmonica.

Further, the mouthpiece can realize a more flexible playing method by extending the passage.

Further, the electronic organ is also provided with a MIDI interface so as to realize data exchange with an external system.

Further, the electronic organ is also provided with an audio output port, and the audio output port is provided with an audio amplifier and a power amplifier which are matched with the audio output port so as to be connected with an external sound amplifying system for sound amplifying.

The keys are a number matrix keyboard of a piano key arrangement mode, and the right hand can play various chords while playing the melody directly.

The sound source synthesizer is a set of tone color circuit, audio sampling waveforms of tone colors of various musical instruments are stored in the sound source synthesizer circuit in advance by using a power-down memory, and the corresponding tone colors are called out for playing through digital processing, so that the playing purpose is realized.

The operation keys and the display screen are used for selecting tone of the musical instrument, selecting tone, adjusting reverberation and adjusting volume, and the microprocessor is used for controlling the sound source synthesizer to change processing parameters.

The MIDI interface may be a conventional serial port or a USB format MIDI interface, connected to peripheral devices using standard MIDI protocols.

The audio output port can be connected with the earphone for training, and also can be used for tuning a console and a musical instrument, so that the playing requirements of various occasions with sound amplifying requirements are met.

The beneficial effect of adopting this technical scheme is:

the invention can carry out digital quantization processing on the performance parameters of a player through the sensor, then the performance parameters are sent to the sound source synthesizer, and the sound source synthesizer carries out real-time processing and output according to the performance parameters, thereby realizing the performance purpose of the digital musical instrument by using the performance method of the accordion;

the invention has tone color selection function: the player can modify the musical instrument according to the playing requirement, so that the harmonica can select tone like an electronic organ; has the control function: the sound intensity can be controlled through breath, so that the string music and the playing music can be more easily simulated; the keyboard of piano arrangement can reduce the study degree of difficulty, becomes a musical instrument that the entry is simple, can multitone sound simultaneously, realizes the harmony and the chord performance of accomplishing.

Drawings

Fig. 1 is a schematic diagram of an external structure of an electronic harmonica according to an embodiment of the invention;

FIG. 2 is a schematic view of an internal sensor connection structure of an electronic harmonica according to an embodiment of the invention;

FIG. 3 is a schematic view of an extension channel connection structure of an electronic harmonica according to an embodiment of the invention;

fig. 4 is a schematic diagram of an external interface of an electronic harmonica according to an embodiment of the invention;

fig. 5 is a schematic circuit diagram of an electronic harmonica according to an embodiment of the invention;

fig. 6 is a schematic flow chart of an electronic harmonica according to an embodiment of the invention.

Description of the embodiments

The present invention will be further described with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.

In the embodiment, referring to fig. 1-6, the invention provides an electronic harmonica, which comprises a harmonica body, a mouthpiece, an air pressure channel, an air pressure sensor, keys, a microcontroller, an audio synthesizer and an audio amplifier;

the electronic harmonica body comprises a mouthpiece 2, the mouthpiece 2 is connected to a barometric sensor 4 through a barometric channel 3, the barometric sensor 4 is connected to a microprocessor, and meanwhile, a key 5 is connected to the microprocessor.

Acquiring an air pressure sampling value through an air pressure sensor 4, and acquiring a key code through a key 5; acquiring note information by using a key code through a microprocessor, converting an air pressure value into a fine tuning value of sound volume, and completing acquisition of performance information; and transmitting the performance information to the sound source synthesizer to process and output the performance information so as to realize real-time performance.

As an optimization scheme of the above embodiment, as shown in fig. 1, the device further comprises an operation key 6 and a display screen 7; the operation keys 6 and the display screen 7 are arranged on the harmonica, and a man-machine interface formed by the keys and the display screen realizes the function adjustment operation of the harmonica.

As an optimization of the above embodiment, the mouthpiece 2 can realize a more flexible playing method by extending the passage 8.

As an optimization scheme of the above embodiment, the electronic organ is further provided with a MIDI interface 9 to realize data exchange with an external system.

As an optimization scheme of the above embodiment, the electronic organ is further provided with an audio output port 10, and the audio output port is provided with an audio amplifier and a power amplifier matched with the audio output port to be connected with an external amplifying system for amplifying.

The keys 5 are a number matrix keyboard of piano key arrangement mode, and the right hand can play the melody directly and simultaneously play various chords.

For a better understanding of the present invention, the following is a complete description of the principles of the invention:

as shown in fig. 1 to 3, when playing, the right hand presses the keyboard as the note position of the playing, and the air pressure sensor 4 can feel the breath of the player, because the air pressure sensor 4 of the MEMS (micro electro mechanical system), which is a chip capable of converting air pressure signals into resistance signals, acquires the breath force, and the note information and the force information are sent to the sound source synthesizer by the microprocessor. The sound source synthesizer calls out the corresponding sampling wave nature and controls the force thereof to realize the output of the playing audio signal.

The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An electronic harmonica is characterized by comprising a harmonica body (1), a mouthpiece (2), an air pressure channel (3), an air pressure sensor (4), keys (5), a microcontroller, an audio synthesizer and an audio amplifier;

the electronic harmonica body (1) comprises a mouthpiece (2), the mouthpiece (2) is connected to a barometric sensor (4) through a barometric channel (3), the barometric sensor (4) is connected to a microprocessor, and meanwhile, a key (5) is connected to the microprocessor;

the key code is acquired through the key (5), and the air pressure value is acquired through the air pressure sensor (4); converting the key code into note information through a microprocessor, and converting the air pressure value into a control parameter of sound intensity; and after being processed by the sound source synthesizer, the audio signal is output through the audio amplifier to complete real-time playing.

2. An electronic harmonica as claimed in claim 1, wherein: the electronic harmonica also comprises operation keys (6) and a display screen (7); the operation keys (6) and the display screen (7) are arranged on the organ, and a man-machine interface formed by the operation keys (6) and the display screen (7) realizes the operations of organ tone color selection, tone selection, reverberation adjustment, volume adjustment and the like.

3. An electronic harmonica as claimed in claim 1, wherein: the mouthpiece (2) can realize a more flexible playing method by extending the channel (8).

4. An electronic harmonica according to claim 1 or 2, characterized in that: the harmonica is provided with a MIDI interface (9).

5. An electronic harmonica according to claim 1 or 2, characterized in that: the device is provided with an audio output port (10), and the audio output port (10) is provided with an audio amplifier and a power amplifier which are matched with the audio output port.