阅读说明：本技术 电子打击旋律乐器 (Electronic percussion melody musical instrument ) 是由 陈岳 于 2020-06-18 设计创作，主要内容包括：本发明公开了一种电子打击旋律乐器。包括：琴键模块,其包括多个琴键和多个能量转换单元,其中每个琴键布置成接受来自外部的敲击,所述多个能量转换单元中的每个配置用于感应对所述琴键敲击所产生的机械能并且将所述机械能转换成电信号形式的电能。存储单元,其配置用于存储与所述多个琴键关联的音源数据。输出单元,其配置用于输出与所述音源数据对应的琴音信号。控制单元,其配置用于：接收来自于能量转换单元的电信号；根据所述电信号从所述存储单元获取与所述电信号关联的音源数据；以及控制所述输出单元输出与所述音源数据对应的所述琴音信号。本发明的乐器通过能量转换单元可以精确地采集敲击琴键的压力信号,从而提高了乐器的性能。(The invention discloses an electronic percussion melody musical instrument. The method comprises the following steps: a key module including a plurality of keys each arranged to receive a tap from the outside, and a plurality of energy conversion units each configured to sense mechanical energy generated in response to the key tap and convert the mechanical energy into electrical energy in the form of an electrical signal. A storage unit configured to store sound source data associated with the plurality of keys. An output unit configured to output a musical instrument sound signal corresponding to the sound source data. A control unit configured to: receiving an electrical signal from the energy conversion unit; acquiring sound source data associated with the electric signal from the storage unit according to the electric signal; and controlling the output unit to output the musical instrument sound signal corresponding to the sound source data. The musical instrument of the invention can accurately collect the pressure signal of the key through the energy conversion unit, thereby improving the performance of the musical instrument.)

1. A key module, comprising:

a plurality of keys, wherein each key is arranged to receive a tap from the outside; and

a plurality of energy conversion units, wherein each energy conversion unit is disposed under a corresponding key and configured to:

sensing mechanical energy generated by the key strike; and

converting the mechanical energy into electrical energy in the form of an electrical signal.

2. The key module according to claim 1, further comprising a transmission interface electrically connected to the plurality of energy conversion units for performing data transmission with an external device.

3. The key module according to claim 2, wherein the transmission interface includes a wired transmission interface and/or a wireless transmission interface for data transmission with the external device.

4. The key module of claim 3, wherein the wired transmission interface includes a PCIE interface, a serial peripheral interface, a fiber optic interface, or a MIDI interface.

5. The key module according to claim 1, wherein the plurality of keys are arranged in at least two rows, wherein a first row is a semi-register and a second row is a full register.

6. The key module according to claim 1, wherein the key includes a conductive structure including a stress panel supporting the key and a pressure receiving bottom plate on one side of the body, the energy conversion unit being disposed between the stress panel and the pressure receiving bottom plate.

7. The key module of claim 4, wherein the key includes a bottom surface that conforms to the stress panel and two side portions, wherein inner surfaces of the two side portions are in surface contact with end surfaces of the stress panel and the pressure-bearing bottom plate to support and fix the key.

8. The key module according to claim 5, wherein vibration-proof materials for preventing the energy conversion unit from vibrating are filled between the stress panel and the pressure-bearing bottom plate.

9. The key module according to any one of claims 1 to 8, wherein the energy conversion unit includes one or more of a piezoceramic sensor, a pressure-sensitive sensor, a flexible bending sensor, and a vibration sensor.

10. The key module according to claim 9, further comprising a control panel for performing function setting on the external device.

Technical Field

The present invention relates generally to the field of musical instruments. More particularly, the present invention relates to an electronic percussion melody musical instrument.

Background

The conventional percussion melody musical instruments make a sound by striking a key made of a vibration material, and amplify or the like the sound through a resonance box. Since some of the vibration materials are selected from very precious wood, the whole instrument is expensive. In addition, the volume of the instrument is too large to be portable due to the presence of the resonance box.

During playing, the existing electronic percussion melody musical instruments generate an electric signal related to the musical instrument sound by controlling the conduction of the circuit switch through the striking of the keys. The electric signals generated in this way usually do not well reflect the influence of the pressing or striking force of the keys on the tone and timbre, thereby affecting the playing effect of the electronic percussion melody musical instrument. In addition, the conventional electronic percussion melody musical instruments have low sensitivity, single function and few external interfaces, so that the requirements of players on various functions of the electronic percussion melody musical instruments cannot be met.

Disclosure of Invention

To solve at least one or more of the above problems in the background art, the present invention provides a novel electronic percussion melody musical instrument. The musical instrument adopts the energy conversion unit to convert mechanical energy generated by knocking keys into electric energy in a current form, and can generate currents with different sizes according to different knocking forces. Further, the electronic percussion melody musical instrument of the present invention employs a control unit supporting various signal processing and control, thereby enhancing the processing ability of the music signal. In addition, the electronic percussion melody musical instrument of the present invention has various external interfaces so as to satisfy different use requirements of different players for the musical instrument.

Specifically, the invention discloses an electronic percussion melody musical instrument. The musical instrument includes: a key module including a plurality of keys each arranged to receive a tap from the outside, and a plurality of energy conversion units each configured to sense mechanical energy generated by the key tap and convert the mechanical energy into electrical energy in the form of an electrical signal. A storage unit configured to store sound source data associated with the plurality of keys. An output unit configured to output a musical instrument sound signal corresponding to the sound source data. The musical instrument further comprises a control unit configured to: receiving the electrical signal from the energy conversion unit; acquiring sound source data associated with the electric signal from the storage unit according to the electric signal; and controlling the output unit to output the musical instrument sound signal corresponding to the sound source data.

In one embodiment, further comprising a body for accommodating the control unit, the output unit, and the storage unit, the key module further comprises a conductive structure, wherein the conductive structure includes a stress panel supporting the keys and a pressure-receiving bottom plate on one side of the body. The energy conversion unit is arranged between the stress panel and the pressure-bearing bottom plate. The plurality of keys are arranged in at least two rows, wherein a first row is a half-pitch range and a second row is a full-pitch range, and the keys are further arranged by one of: a support is arranged on the stress panel and used for supporting and fixing the keys; or the key comprises a bottom surface attached to the stress panel and two side parts, wherein the inner surfaces of the two side parts are in surface contact with the stress panel and the end surfaces of the pressure bearing bottom plate, and the two side parts are partially inserted into the piano body to support and fix the key.

In another embodiment, a vibration-proof material for preventing the energy conversion unit from vibrating is filled between the stress panel and the pressure-bearing bottom plate

In another embodiment, the energy conversion unit comprises one or more of a piezo ceramic sensor, a pressure sensitive sensor, a flexible bending sensor and a vibration sensor.

In one embodiment, the electronic percussion melody musical instrument further includes an a/D conversion module configured to convert the analog electric signal output from the energy conversion unit into a digital electric signal and output the digital electric signal to the control unit.

In another embodiment, the electronic percussion melodic instrument further comprises a filtering module configured to filter the digital electrical signal and to send the filtered digital electrical signal to the control unit.

In one embodiment, the sound source data comprises data relating to timbre and/or sound effect of at least one musical organ. In another embodiment, the at least one musical instrument comprises one or more of a xylophone, a tremolo and a marimba.

In another embodiment, the electronic percussion melody instrument further comprises a transmission interface configured to enable the electronic percussion melody instrument to interact with an external device to provide an extended function of the electronic percussion melody instrument, wherein the transmission interface comprises a wired transmission interface and/or a wireless transmission interface to provide a wired and/or wireless connection with the external device.

In still another embodiment, the electronic percussion melody musical instrument further comprises a control panel and a power module, wherein the control panel is connected to the control unit and is configured to perform function setting on the electronic percussion melody musical instrument, and the power module is configured to supply power to the electronic percussion melody musical instrument.

The electronic percussion melody musical instrument of the invention better solves the problems that the existing electronic percussion musical instrument is insensitive to the receiving of the pressure signal of the percussion key or cannot identify the magnitude of the pressure signal. Meanwhile, the electronic percussion melody musical instrument of the invention can also adopt wireless modules such as Bluetooth and the like to communicate with external equipment, and is also provided with a multifunctional panel, thereby reducing the volume of the electronic percussion melody musical instrument and facilitating the performance of players. In addition, the electronic percussion melody musical instrument has the advantages of low cost, good timbre, good playing hand feeling, strong anti-interference capability and the like.

Drawings

The above-described features of the present invention will be better understood and its numerous objects, features, and advantages will be apparent to those skilled in the art by reading the following detailed description with reference to the accompanying drawings. The drawings in the following description are only some embodiments of the invention and other drawings may be derived by those skilled in the art without inventive effort, wherein:

FIG. 1 is a block diagram schematically showing the composition of an electronic percussion melody musical instrument according to an embodiment of the present invention;

fig. 2 is a view showing an exemplary structure of a key module of an electronic percussion melody musical instrument according to an embodiment of the present invention;

fig. 3 is a schematic view showing the arrangement of keys of an electronic percussion melody musical instrument according to the embodiment of the present invention;

fig. 4 is another exemplary structural view showing a key module of the electronic percussion melody musical instrument according to the embodiment of the present invention;

FIG. 5 is a block diagram showing the composition of an electronic percussion melody musical instrument according to the embodiment of the present invention; and

fig. 6 shows an internal structure of an IC sound source memory according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a block diagram schematically showing the composition of an electronic percussion melody musical instrument 100 according to an embodiment of the present invention. As shown in fig. 1, the electronic percussion melody musical instrument 100 of the present invention may include a key module 110, a storage unit 120, an output unit 130, and a control unit 140. Wherein the key module may include a plurality of keys 1101 and a plurality of energy conversion units 1102. Further, each of the keys is arranged to receive a tap from the outside, and each of the plurality of energy conversion units is configured to sense mechanical energy generated in response to the key tap and convert the mechanical energy into electrical energy in the form of an electrical signal.

In one embodiment, the storage unit described above may be configured to store sound source data associated with the plurality of keys. In one application scenario, the sound source data may comprise data relating to the timbre and/or sound effect of at least one musical organ, for example. According to aspects of the present invention, the at least one organ may include, but is not limited to, one or more of a xylophone, a tremolo and a marimba. Further, the electronic percussion melody musical instrument of the present invention can exhibit the same performance effect as that of the existing various percussion melody musical instruments according to the difference of the sound source data or the different arrangement of the key modules.

In one embodiment, the output unit may be configured to output a musical tone signal corresponding to the sound source data. In one application scenario, the output unit may be a speaker including a power amplifier, so that the sound signal is amplified and played in the form of sound.

In one embodiment, the aforementioned control unit may be configured to perform the following operations: first, the control unit receives the electrical signal from the energy conversion unit. Then, the control unit may acquire sound source data associated with the electric signal from the storage unit in accordance with the electric signal. Finally, the control unit may send the sound source data to an output unit, and then control the output unit to output the musical instrument sound signal corresponding to the sound source data.

Fig. 2 is a view showing an exemplary structure of a key module 200 of an electronic percussion melody musical instrument according to an embodiment of the present invention. As shown in fig. 2, the key module 200 of the electronic percussive melody musical instrument of the present invention may include: a plurality of keys 201, a conductive structure composed of a stress panel 202 and a pressure-bearing bottom plate 203 adjacent to the keys, a plurality of energy conversion units 204, a body 205, a support 206, and a vibration-proof material 207. Exemplary components of the key module will be described in detail below with reference to fig. 2 and 3, respectively.

Fig. 3 is a schematic diagram showing the arrangement of keys 300 of an electronic percussion melody musical instrument according to an embodiment of the present invention. As shown in fig. 3, in one embodiment, the plurality of keys may be made of a composite material and may be arranged in two rows, wherein a first row may be provided as a semitone region, as shown in fig. 3 as an upper row consisting of note numbers # C, # D, # F, # G, and # a …; and the second row may be provided as a diatonic region as shown in the lower row of note numbers C, D, E, F, G, A and B … in fig. 3.

In one or more embodiments, the energy conversion unit of the present invention may include one or more of a piezo ceramic sensor, a pressure sensitive sensor, a flexible bending sensor, and a vibration sensor. The above-described various sensors can be flexibly arranged according to different requirements for the key stroke sensitivity. In one embodiment, the energy conversion unit may be a plurality of piezoceramic sensors, which are devices that convert pressure (or strain) generated by hitting a key into current (or charge) and output the current (or charge) by using piezoelectric effect of piezoceramic wafers, wherein the piezoceramic wafers are key components in the piezoceramic sensors. From the perspective of signal transformation, the piezoceramic sheet acts as a charge generator. When the piezoelectric ceramic plate is acted by external force, the piezoelectric ceramic plate can generate deformation and release electric charge due to the deformation, and then current is generated and output.

The piezoelectric ceramic sensor can generate currents with different magnitudes according to different pressures. Therefore, the electronic percussion melody musical instrument of the invention can also emit the tones with different volume according to the different force of the player striking the keys, thereby having the sound effect which is closer to that of the traditional musical instrument during the playing process. In addition, the range of the force with which the player strikes the key can also be increased by increasing the sensitivity of the piezoelectric ceramic sensor. Here, the sensitivity of the piezoceramic sensor refers to the ratio of a small increase in current output to a corresponding small increase in pressure input. The larger the ratio is, the higher the sensitivity of the piezoelectric ceramic sensor is, so that the requirements of players with different knocking forces can be met.

The body may be a hollow structure, which may be made of metal or composite material. In the cavity, the storage unit, the output unit, the control unit, a power supply module, and other accessory circuit boards or modules may be included. The external surface of the body can be provided with a control panel and various transmission interfaces so as to facilitate the performance of a player.

Fig. 4 is another exemplary structural view showing a key module of the electronic percussion melody musical instrument according to the embodiment of the present invention. As shown in fig. 4, the key module 400 of the electronic percussive melody musical instrument of the present invention may include a plurality of keys 401, a conductive structure composed of a stress panel 402 and a pressure-bearing bottom plate 403, a plurality of energy conversion units 404, a body 405, and a vibration-proof material 406. Unlike the structure of the key module in fig. 2, the keys, the body, and the conductive structure of the key module in fig. 4 may be a tightly-coupled integrated structure.

Specifically, the conducting structure comprises a stress panel supporting the keys and a bearing bottom plate positioned on one side of the body, and the energy conversion unit is arranged between the stress panel and the bearing bottom plate. The key comprises a bottom face and two side portions, which are conformed to the stress panel, which may be made of one or more composite or natural materials, preferably rubber. The keys may be arranged in the following manner: the inner surfaces of the two side parts are in surface contact with the end surfaces of the stress panel and the pressure bearing bottom plate, and are partially inserted into the reserved hole positions of the piano body so as to fix the piano body and the keys. For the description of the layout among the keys, the energy conversion unit, the body, and the vibration-proof material, see the corresponding description of the body module in fig. 2 above, which is not repeated herein. The operation of the body module shown in fig. 4 will be briefly described.

When the keys are knocked to play, the keys are slightly deformed under pressure, due to the tight combination among the keys, the body and the conducting structure, the pressure generated by the slight deformation is transmitted to the energy conversion unit through the conducting structure, and the pressure is converted into an electric signal by the energy conversion unit and is output to the control unit of the musical instrument. In one embodiment, in order to increase the sensitivity of the energy conversion unit, a plurality of energy conversion units as shown in fig. 4 may be further provided corresponding to one key. With the scheme of the key module of the present invention shown in fig. 4, the key module is made safe and reliable, and the volume of the electronic percussion melody musical instrument of the present invention is further reduced.

Fig. 5 is a block diagram showing the composition of the electronic percussion melody musical instrument 500 according to the embodiment of the present invention. It is understood that the electronic percussion melody musical instrument 500 shown in fig. 5 is an exemplary embodiment of the electronic percussion melody musical instrument 100 shown in fig. 1 and includes more implementation details. Therefore, the above description of the electronic percussion melody musical instrument 100 is also applicable to the scheme of the electronic percussion melody musical instrument 500, and the same contents will not be described again.

As shown in fig. 5, the electronic percussive melody instrument 500 of the present invention may include keys 501, an energy conversion unit 502, an a/D conversion module 503, a filter module 504, a main control unit 505, an IC sound source memory 506, a data memory 507, a power amplifier 508, a speaker 509, a bluetooth module 510, an optical fiber module 511, and a MIDI interface 512.

In one embodiment, the a/D conversion module includes an a/D conversion chip and its accessory circuits, which are configured to convert the analog electrical signal output by the energy conversion unit into a digital electrical signal and input the digital electrical signal to the control unit. Specifically, the a/D conversion functions to convert an analog signal continuous in time and amplitude into a digital signal discrete in time and amplitude. Typically, the a/D conversion requires 4 processes of sampling, holding, quantizing, and encoding. In practical circuits, some of the foregoing processes may be combined, for example, quantization and coding are often implemented simultaneously in the conversion process.

In one embodiment, the filtering module may include a filter and its accompanying circuitry configured to filter the digital electrical signal and send the filtered digital electrical signal to the control unit. During the playing of the electronic percussion melody musical instrument, low or high frequency interference signals may be generated in the circuit due to the electrical characteristics of the electronic components, which may affect the reception of useful signals associated with the striking of the keys. Therefore, the digital electric signal output by the a/D conversion module can be processed by a filter composed of a resistor and a capacitor, for example, so as to filter out interference signals therein, and ensure normal reception of useful signals.

In one embodiment, the memory of the present invention may include an IC source memory and a data memory. Wherein the IC sound source memory is configured to store sound source data associated with the plurality of keys, the sound source data including, but not limited to, data relating to timbre and/or sound effect of one or more of a xylophone, a tremolo and a marimban. The internal structure of the IC sound source memory will be briefly described with reference to fig. 5.

Fig. 6 shows an internal configuration of an IC sound source memory 600 according to an embodiment of the present invention. As shown in fig. 6, the IC sound source memory stores waveform data of sound source data [0] to sound source data [ n ], where the sound source data [0] is waveform data of the lowest note and the sound source data [ n ] is waveform data of the highest note, where the magnitude of the value of n depends on the number of keys. When sound source data is stored in the same number of wavelengths, since the wavelength of bass is longer, the data of sound source data corresponding to a lower note number is longer than the data of sound source data corresponding to a higher note number, and therefore the storage space occupied by the data of sound source data in the IC sound source memory is larger. In one embodiment, the sound source data corresponds to the keys shown in fig. 3 one to one, for example, the sound source data [0] may correspond to the note number C of the key shown in fig. 3, the sound source data [1] may correspond to the note number D of the key shown in fig. 3, for example, and the like.

In one embodiment, the data storage is configured to store programs and data related to controlling the operation of the musical instrument-related modules and units, and may also store other music data related to performance. The data storage device is connected with the main control unit through a bus, and may include a plurality of groups of storage units, each group of the storage units being connected with the main control unit through a bus.

In one embodiment, the master control unit of the present invention may be implemented, for example, using a digital signal processor ("DSP"). The DSP is a microprocessor suitable for performing digital signal processing operations, and is mainly applied to rapidly implement various digital signal processing algorithms in real time. For the invention, the DSP is adopted as the main control unit, and the audio signal can be processed rapidly in real time. Specifically, firstly, the DSP receives the digital electrical signal output from the energy conversion unit and subjected to a/D conversion and filtering; then, the DSP acquires sound source data associated with the digital electric signal from the IC sound source memory according to the digital electric signal; finally, the DSP sends the sound source data to an output unit so as to output the organ sound signals corresponding to the sound source data.

In one embodiment, the power amplifier may be composed of three parts: the power amplifier comprises a preamplifier circuit, a drive amplifier circuit and a final-stage power amplifier circuit. The pre-amplifier circuit is configured for impedance matching, which has advantages of high input impedance and low output impedance, and thus can receive and transmit the current signal of the audio source data with a minimum data loss. The drive amplifying circuit is configured to further amplify the current signal sent by the pre-amplifying circuit into a signal with medium power so as to drive the final-stage power amplifying circuit to normally work. The final power amplifying circuit plays a key role in the power amplifier, the technical index of the final power amplifying circuit determines the technical index of the whole power amplifier, and the final power amplifying circuit is configured to amplify a current signal sent by the driving amplifying circuit into a high-power signal so as to drive a loudspeaker to play sound.

In one embodiment, the speaker may include a magnet, a frame, a centering disk, a cone diaphragm, and the like. Alternatively, the speaker may further include the power amplifier described above. A loudspeaker, commonly known as a "horn", is a transducer device that converts an electrical signal into an acoustic signal. Specifically, the audio power signal causes the cone or diaphragm of the speaker to vibrate and resonate (resonate) with the surrounding air to generate sound through electromagnetic, piezoelectric, or electrostatic effects. Alternatively, the speaker may be disposed outside the electronic percussion melody musical instrument of the present invention, which may be wirelessly connected to the electronic percussion melody musical instrument of the present invention through a wireless communication technique such as bluetooth.

In one embodiment, the electronic percussion melody musical instrument of the present invention may further include a transmission interface. Configured to enable the electronic percussion melody instrument to interact with an external device to provide extended functionality of the electronic percussion melody instrument, wherein the transmission interface comprises a wired transmission interface and/or a wireless transmission interface to provide a wired and/or wireless connection with the external device. As a specific implementation, the wired transmission Interface may be, for example, one or more of a music device Digital Interface ("MIDI"), a General-purpose input/output ("GPIO") Interface, a high-speed Serial computer extended bus ("PCIE") Interface, a Serial Peripheral Interface ("SPI"), and an optical fiber Interface, as required.

The wired transmission interface is electrically connected with the main control unit, so that data transmission between the musical instrument and an external device (such as a server, a computer or other musical instruments) is realized. In one embodiment, the wired transmission interface may be, for example, a standard PCIE interface. The data to be processed is transmitted to the computer by the main control unit through the standard PCIE interface, so that the audio signals output by the musical instrument are controlled and edited by the computer.

In another embodiment, the wired transmission interface may also be a MIDI interface. MIDI is a standard for digital music, which defines various notes or playing codes for playing devices such as electronic musical instruments and allows electronic musical instruments, computers or other playing devices to be connected, adjusted and synchronized with each other so as to exchange playing data among the musical instruments in real time. In one embodiment, the MIDI interface is configured for data communication between the electronic percussive melody musical instrument of the present invention and a musical instrument having the MIDI interface, thereby enabling a joint performance between a plurality of musical instruments.

In yet another embodiment, the wired transmission interface may also be an optical fiber interface including an optical module configured for data transmission between the musical instrument of the present invention and an external device. Specifically, the light module may include a light emitting module and a light receiving module. In one application scenario, in one aspect, an electrical signal of data sent by the main control unit of the musical instrument of the present invention is processed by a driving chip inside the light emitting module, so as to drive a semiconductor Laser (LD) or a Light Emitting Diode (LED) to emit a modulated optical signal at a corresponding rate, and the optical signal is coupled into an optical fiber for transmission to an external device through the optical fiber. On the other hand, the optical signal of the data sent by the external device is processed by the optical detection diode and the amplifier in the optical receiving module, so as to output the electric signal with the corresponding code rate, and the electric signal is transmitted to the main control unit. The musical instrument and the external equipment of the invention transmit data through optical signals, which not only can effectively overcome the defect of large attenuation of electric signal transmission, but also has faster data transmission speed and stronger anti-interference capability, thereby improving the quality of signal transmission.

In another embodiment, the wireless transmission interface may be one or more of a bluetooth interface, an infrared interface, a WIFI interface, etc., as desired. The wireless transmission interface is connected with the main control unit in a wireless mode, and therefore data transmission between the musical instrument and external equipment (such as a server, a computer or other musical instruments) is achieved. In one embodiment, the wireless transmission interface may be, for example, a bluetooth interface including a bluetooth module, and the bluetooth interface may be used to connect the musical instrument and the external speaker of the present invention, wherein the bluetooth module is disposed in both the musical instrument and the speaker, so as to conveniently and flexibly position the external speaker according to the requirement of playing on site.

In one embodiment, the electronic percussion melody musical instrument of the present invention may further include a control panel connected to the control unit through a line bit interface and configured to perform function setting on the electronic percussion melody musical instrument. In one embodiment, the control panel may include, for example, a display screen, a switch key of a different musical instrument, a volume key, and other functional modules. The display screen is configured to display a performance state of the current percussion melody instrument. The switching keys of different types of musical instruments can be used for selecting the playing modes of different types of percussion melody musical instruments such as xylophone, marimba or tremolo. The volume key is connected with the power amplifier and is configured to control the size of the musical instrument sound signal.

In one embodiment, the electronic percussion melody musical instrument of the present invention may further include a power supply module, which may implement power supply to the electronic percussion melody musical instrument in various ways. For example, but not limited to, the instrument may be powered by external mains and a voltage transformation unit disposed inside the power module. It is also possible to power the instrument by providing a power adapter. In addition, a battery box can be arranged on the musical instrument body, and the power supply can be carried out on the musical instrument through a dry battery.

The operation of the electronic percussive melody musical instrument of the present invention will be described in detail below by taking the key module shown in fig. 2 as an example.

When the player desires to use the electronic percussion melody musical instrument of the present invention as a xylophone, he can set the electronic percussion melody musical instrument of the present invention as a xylophone by means of the keys on the control panel. The performance starts, and the player strikes a key with a hammer, for example, a key represented by note number C. The pressure generated by the knocking is transmitted to the piezoelectric ceramic sensor through the transmission mechanism, and the piezoelectric ceramic sensor releases electrons due to the piezoelectric effect and converts mechanical energy generated by the knocking into electric energy in the form of analog electric signals. At the same time, the key of the struck note number C rapidly stops vibrating under the combined action of the vibration-proof composite material in the conductive structure and the support, and is rapidly sprung back to the state before being struck so as to wait for the next strike.

Then, the analog electric signal sent by the piezoelectric ceramic sensor is received by the A/D conversion module, and after a series of processing such as sampling, quantization and coding, the analog electric signal is converted into a digital electric signal. Then, the digital electric signal is processed by a filtering module so as to effectively filter out high-frequency and low-frequency interference signals therein. Then, the digital electric signals related to the keys of note number C after being processed by the filtering module are transmitted to the main control unit. Then, the main control unit performs table lookup in the IC sound source memory to acquire sound source data [0] associated with the key of the sound source number C. Then, the main control unit outputs the sound source data [0] to the power amplifier.

Then, the power amplifier processes the received sound source data [0] signal through a pre-amplifying circuit, a driving amplifying circuit and a final power amplifying circuit respectively and sequentially, and finally amplifies the sound source data [0] signal. The amplified signal of the sound source data [0] can be transmitted to a loudspeaker in a wired or wireless manner for playing, so that the listener can listen to the sound generated by hitting the key of the sound source number C. If the player needs to connect the electronic percussion melody musical instrument of the present invention to a computer or other electronic musical instruments, so as to perform music learning or combined playing through the APP software, the player can connect with the above-mentioned devices through the bluetooth module or MIDI interface.

It should be understood that the terms "first", "second", "third" and "fourth", etc. in the claims, the description and the drawings of the present invention are used for distinguishing different objects and are not used for describing a particular order. The terms "comprises" and "comprising," when used in the specification and claims of this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and claims of this application, the singular form of "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and claims of this specification refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

As used in this specification and claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

Although the embodiments of the present invention are described above, the descriptions are only examples for facilitating understanding of the present invention, and are not intended to limit the scope and application scenarios of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.