WO2021253654A1 - 电子打击旋律乐器 - Google Patents

电子打击旋律乐器 Download PDF

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Publication number
WO2021253654A1
WO2021253654A1 PCT/CN2020/115389 CN2020115389W WO2021253654A1 WO 2021253654 A1 WO2021253654 A1 WO 2021253654A1 CN 2020115389 W CN2020115389 W CN 2020115389W WO 2021253654 A1 WO2021253654 A1 WO 2021253654A1
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WIPO (PCT)
Prior art keywords
musical instrument
electronic percussion
keys
percussion melody
sound source
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PCT/CN2020/115389
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English (en)
French (fr)
Inventor
陈岳
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陈岳
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Publication of WO2021253654A1 publication Critical patent/WO2021253654A1/zh

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/32—Constructional details
    • G10H1/34—Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments
    • G10H1/344—Structural association with individual keys
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H3/00—Instruments in which the tones are generated by electromechanical means
    • G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
    • G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
    • G10H3/143—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means characterised by the use of a piezoelectric or magneto-strictive transducer
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H3/00—Instruments in which the tones are generated by electromechanical means
    • G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
    • G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
    • G10H3/146—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means using a membrane, e.g. a drum; Pick-up means for vibrating surfaces, e.g. housing of an instrument

Definitions

  • the present invention generally relates to the field of musical equipment. More specifically, the present invention relates to an electronic percussion melody musical instrument.
  • the existing electronic percussion melody musical instrument controls the conduction of the circuit switch by striking the keys to generate electrical signals related to the sound of the piano.
  • the electrical signal generated in this way usually does not well reflect the impact of key pressing or percussion on the pitch and timbre, thereby affecting the performance of electronic percussion melody instruments.
  • the existing electronic percussion melody instruments have low sensitivity, relatively single functions and few external interfaces, so they cannot meet the various functional requirements of performers for electronic percussion melody instruments.
  • the present invention provides a new type of electronic percussion melody musical instrument.
  • the musical instrument adopts an energy conversion unit to convert the mechanical energy generated by hitting a key into electric energy in the form of electric current, and can generate electric currents of different sizes according to different hitting strengths.
  • the electronic percussion melody musical instrument of the present invention adopts a control unit that supports various signal processing and control, thereby enhancing the processing capability of music signals.
  • the electronic percussion melody musical instrument of the present invention has a variety of external interfaces, so as to meet the different needs of different players for the use of the musical instrument.
  • the musical instrument includes: a key module, which includes a plurality of keys and a plurality of energy conversion units, wherein each of the keys is arranged to receive percussion from the outside, and each of the plurality of energy conversion units is configured to sense a pair of The mechanical energy generated by the key hitting and converts the mechanical energy into electrical energy in the form of electrical signals.
  • the storage unit is configured to store sound source data associated with the plurality of keys.
  • the output unit is configured to output a piano tone signal corresponding to the sound source data.
  • the musical instrument further includes a control unit configured to: receive the electrical signal from the energy conversion unit; obtain sound source data associated with the electrical signal from the storage unit according to the electrical signal; and control The output unit outputs the piano tone signal corresponding to the sound source data.
  • the key module further includes a conductive structure, wherein the conductive structure includes a stress panel supporting the keys and a body located on the piano body. Pressure-bearing bottom plate on one side. 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, in which the first row is a semi-tone area and the second row is a full-tone area, and the keys are further arranged in one of the following ways: a support is arranged on the stress panel to Used to support and fix the key; or the key includes a bottom surface attached to the stress panel and two side parts, wherein the inner surfaces of the two side parts are connected to the end surfaces of the stress panel and the pressure-bearing bottom plate It forms surface contact and is partially inserted into the piano body to support and fix the keys.
  • a vibration-proof material for preventing vibration of the energy conversion unit is filled between the stress panel and the pressure-bearing bottom plate.
  • the energy conversion unit includes one or more of a piezoelectric ceramic sensor, a pressure sensing sensor, a flexible bending sensor, and a vibration sensor.
  • the electronic percussion melody musical instrument further includes an A/D conversion module configured to convert the analog electrical signal output by the energy conversion unit into a digital electrical signal and output it to the control unit.
  • the electronic percussion melody musical instrument further includes a filter module configured to filter the digital electrical signal and send the filtered digital electrical signal to the control unit.
  • the sound source data includes data related to the tone color and/or sound effect of at least one piano.
  • the at least one piano includes one or more of a xylophone, a vibraphone, and a marimba.
  • the electronic percussion melody instrument further includes a transmission interface configured to enable the electronic percussion melody instrument to interact with an external device to provide extended functions of the electronic percussion melody instrument, wherein the transmission The interface includes a wired transmission interface and/or a wireless transmission interface, so as to provide a wired and/or wireless connection with the external device.
  • the electronic percussion melody instrument further includes a control panel and a power supply module, wherein the control panel is connected to the control unit and is configured to perform functional settings on the electronic percussion melody instrument, and The power supply module is configured to supply power to the electronic percussion melody musical instrument.
  • the electronic percussion melody instrument of the present invention better solves the problem that the current electronic percussion instrument is not sensitive to the pressure signal of striking a key, or cannot recognize the magnitude of the pressure signal.
  • the electronic percussion melody instrument of the present invention can also communicate with an external device using a wireless module such as Bluetooth, and is also provided with a multifunctional panel, so that the electronic percussion melody instrument of the present invention has a smaller volume and is convenient for players to play.
  • the electronic percussion melody musical instrument of the present invention also has the advantages of low cost, good timbre, good playing feel, and strong anti-interference ability.
  • FIG. 1 is a schematic block diagram showing the composition of an electronic percussion melody musical instrument according to an embodiment of the present invention
  • FIG. 2 is an exemplary structural diagram showing a key module of an electronic percussion melody musical instrument according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram showing the arrangement of keys of an electronic percussion melody musical instrument according to an embodiment of the present invention
  • FIG. 4 is another exemplary structural diagram showing the 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 an embodiment of the present invention.
  • Fig. 6 shows the internal structure of an IC sound source memory according to an embodiment of the present invention.
  • FIG. 1 is a schematic block diagram showing the composition of an electronic percussion melody musical instrument 100 according to an embodiment of the present invention.
  • 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.
  • the key module may include multiple keys 1101 and multiple energy conversion units 1102. Further, each of the keys is arranged to receive a strike from the outside, and each of the plurality of energy conversion units is configured to sense mechanical energy generated by striking the key and convert the mechanical energy into electricity. Electric energy in the form of a signal.
  • the aforementioned storage unit may be configured to store sound source data associated with the plurality of keys.
  • the sound source data may include, for example, data related to the tone color and/or sound effect of at least one piano.
  • the at least one kind of piano may include, but is not limited to, one or more of xylophone, vibraphone and marimba.
  • the electronic percussion melody musical instrument of the present invention can present the same performance effect as the existing multiple percussion melody instruments according to the difference of the sound source data or the different settings of the key module.
  • the aforementioned output unit may be configured to output a piano tone signal corresponding to the sound source data.
  • the output unit may be a speaker including a power amplifier, so that the piano tone signal is amplified and played in the form of sound.
  • 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 obtain the sound source data associated with the electrical signal from the storage unit according to the electrical signal. Finally, the control unit may send the sound source data to the output unit, and then control the output unit to output the piano tone signal corresponding to the sound source data.
  • FIG. 2 is an exemplary structural diagram showing a key module 200 of an electronic percussion melody musical instrument according to an embodiment of the present invention.
  • the key module 200 of the electronic percussion melody instrument of the present invention may include: a plurality of keys 201, a conductive structure composed of a stress panel 202 close to the keys and a pressure-bearing bottom plate 203, and a plurality of energy conversion units 204 , Piano body 205, support 206 and anti-vibration material 207.
  • the exemplary components of the key module will be described in detail below with reference to FIGS. 2 and 3 respectively.
  • the plurality of keys may be made of composite materials and may be arranged in two rows, wherein the first row may be set as a semitone area, as shown in FIG. 3, which are numbered by notes The upper row composed of #C, #D, #F, #G, and #A...; and the second row can be set as a full range, as shown in Figure 3 by the note numbers C, D, E, F, G, The bottom row composed of A and B...
  • the energy conversion unit of the present invention may include one or more of piezoelectric ceramic sensors, pressure sensing sensors, flexible bending sensors, and vibration sensors.
  • the energy conversion unit may be a plurality of piezoelectric ceramic sensors, which utilize the piezoelectric effect of piezoelectric ceramic sheets to convert the pressure (or strain) generated by hitting a key into a current (or Charge) and output device, in which the piezoelectric ceramic sheet is the key component of the piezoelectric ceramic sensor. From the perspective of signal conversion, the piezoelectric ceramic sheet is equivalent to a charge generator. When the piezoelectric ceramic sheet is subjected to an external force, it will deform and release electric charge due to the deformation, thereby generating current and outputting.
  • the piezoelectric ceramic sensor can produce different magnitude electric current according to the different pressure. Therefore, the electronic percussion melody instrument of the present invention can also emit different volume of piano sounds according to the strength of the player's percussion of the keys, so that the sound effect during the performance is closer to that of percussion of a traditional musical instrument.
  • the sensitivity of the piezoelectric ceramic sensor can be increased to increase the range of the player's strength in hitting the keys.
  • the sensitivity of the piezoelectric ceramic sensor refers to the ratio of the output small current increase to the corresponding input small pressure increase. The larger the ratio, the higher the sensitivity of the piezoelectric ceramic sensor, which can satisfy players with different percussion strengths.
  • the piano body can be a cavity structure, which can be made of metal or composite materials.
  • the cavity may include the storage unit, the output unit, the control unit, the power supply module, and other auxiliary circuit boards or modules.
  • the outer surface of the piano body can also be provided with a control panel and various transmission interfaces to facilitate the performance of the player.
  • the key module 400 of the electronic percussion 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 piano body 405, and a protective device. ⁇ 406 ⁇ Vibration material 406.
  • the difference from the structure of the key module in FIG. 2 is that the keys, the body, and the conductive structure of the key module in FIG. 4 may be a tightly integrated integrated structure.
  • the conductive structure includes a stress panel supporting the keys and a pressure-bearing bottom plate located on one side of the piano body, and the energy conversion unit is arranged between the stress panel and the pressure-bearing bottom plate.
  • the key includes a bottom surface attached to the stress panel and two side parts, which can be made of one or more composite materials or natural materials, preferably, can be made of rubber.
  • the keys can 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 holes of the piano body, In order to fix the piano body and keys.
  • the key When the key is struck for performance, the key is subjected to pressure to produce a slight deformation. Due to the close combination between the keys, the piano body and the conductive structure, the pressure generated by the slight deformation is transmitted to the energy conversion unit through the conductive structure, and is transferred to the energy conversion unit through the conductive structure.
  • the energy conversion unit converts the pressure into an electric signal and outputs it to the control unit of the musical instrument.
  • multiple energy conversion units as shown in FIG. 4 may be provided corresponding to one key.
  • FIG. 5 is a block diagram showing the composition of an electronic percussion melody musical instrument 500 according to an embodiment of the present invention. It can be understood that the electronic percussion melody instrument 500 shown in FIG. 5 is an exemplary embodiment of the electronic percussion melody instrument 100 shown in FIG. 1 and includes more implementation details. Therefore, the above description of the electronic percussion melody instrument 100 is also applicable to the solution of the electronic percussion melody instrument 500, and the same content will not be repeated.
  • the electronic percussion melody instrument 500 of the present invention may include a key 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, and power An amplifier 508, a speaker 509, a Bluetooth module 510, an optical fiber module 511, and a MIDI interface 512.
  • the A/D conversion module includes an A/D conversion chip and its auxiliary circuit, which is configured to convert the analog electrical signal output by the energy conversion unit into a digital electrical signal and send it to the control unit enter.
  • the function of A/D conversion is to convert an analog signal with continuous time and amplitude into a digital signal with discrete time and amplitude.
  • the A/D conversion requires four processes of sampling, holding, quantization, and encoding. In the actual circuit, some of the aforementioned processes can be combined. For example, quantization and encoding are often implemented at the same time during the conversion process.
  • the filtering module may include a filter and its auxiliary circuits, which are configured to filter the digital electrical signal and send the filtered digital electrical signal to the control unit.
  • a filter and its auxiliary circuits which are configured to filter the digital electrical signal and send the filtered digital electrical signal to the control unit.
  • low-frequency or high-frequency interference signals may be generated in the circuit. These interference signals may affect the reception of useful signals related to the keystroke. Therefore, the digital electrical signal output by the A/D conversion module can be processed by, for example, a filter composed of resistors and capacitors, so as to filter out interference signals therein and ensure the normal reception of useful signals.
  • the memory of the present invention may include an IC sound source memory and a data memory.
  • the IC sound source memory is configured to store sound source data associated with the plurality of keys, and the sound source data includes, but is not limited to, the timbre and tone of one or more of the xylophone, vibraphone, and marimba. / Or data related to sound effects. The following briefly describes the internal structure of the IC sound source memory in conjunction with FIG. 5.
  • FIG. 6 shows the internal structure of an IC sound source memory 600 according to an embodiment of the present invention.
  • the IC sound source memory stores waveform data from sound source data [0] to sound source data [n], where sound source data [0] is the waveform data of the lowest sound, and sound source data [n] is the highest sound.
  • Waveform data where the value of n depends on the number of keys.
  • 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, and the sound source data [1] may correspond to For example, the note number D of the key shown in FIG. 3 and so on.
  • 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 to the main control unit through a bus, and may include multiple groups of storage units, and each group of the storage unit is connected to the main control unit through a bus.
  • the main control unit of the present invention may be implemented by, for example, a digital signal processor ("DSP").
  • DSP digital signal processor
  • the main control unit is used as the main control unit, and the audio signal can be processed quickly in real time.
  • the DSP receives the digital electrical signal output from the energy conversion unit and after A/D conversion and filtering; then, the DSP obtains the data from the IC sound source memory according to the digital electrical signal. The sound source data associated with the digital electric signal; finally, the DSP sends the sound source data to the output unit so as to output the piano sound signal corresponding to the sound source data.
  • the power amplifier may be composed of three parts: a preamplifier circuit, a drive amplifier circuit, and a final power amplifier circuit.
  • the preamplifier circuit is configured for impedance matching, and has the advantages of high input impedance and low output impedance, so it can receive and transmit the current signal of the audio source data with as little data loss as possible.
  • the drive amplifier circuit is configured to further amplify the current signal sent by the pre-amplifier circuit into a medium-power signal, so as to drive the final-stage power amplifier circuit to work normally.
  • the final power amplifier circuit plays a key role in the power amplifier, and its technical indicators determine the technical indicators of the entire power amplifier.
  • the final power amplifier circuit is configured to amplify the current signal sent by the drive amplifier circuit to a large Power signal in order to drive the speaker to play the sound.
  • the loudspeaker may include components such as magnets, a frame, a centering support piece, and a vibrating ring cone-shaped paper cone.
  • the speaker may further include the above-mentioned power amplifier. Loudspeakers are commonly known as "horns", which are transducers that convert electrical signals into sound signals.
  • the audio power signal causes the cone or diaphragm of the speaker to vibrate and resonate (resonate) with the surrounding air to emit sound through electromagnetic, piezoelectric, or electrostatic effects.
  • the speaker can also be arranged outside the electronic percussion melody instrument of the present invention, and it can be wirelessly connected with the electronic percussion melody instrument of the present invention through wireless communication technologies such as Bluetooth.
  • the electronic percussion melody musical instrument of the present invention may further include a transmission interface. It is configured to enable the electronic percussion melody musical instrument to interact with an external device to provide extended functions of the electronic percussion melody musical instrument, wherein the transmission interface includes a wired transmission interface and/or a wireless transmission interface to provide communication with the external Wired and/or wireless connection of the device.
  • the wired transmission interface may be, for example, a music device digital interface ("Musical Instrument Digital Interface, abbreviated as MIDI") or general-purpose I/O ("General-purpose input/output, abbreviated as GPIO") as required.
  • MIDI Musical Instrument Digital Interface
  • GPIO General-purpose input/output
  • the wired transmission interface is electrically connected with the main control unit, so as to realize data transmission between the musical instrument and an external device (for example, a server, a computer, or other musical instruments).
  • the wired transmission interface may be a standard PCIE interface, for example.
  • the data to be processed is transferred to the computer by the main control unit through a standard PCIE interface, and then operations such as control and editing of the audio signal output by the musical instrument of the present invention are realized through the computer.
  • the wired transmission interface may also be a MIDI interface.
  • MIDI is a digital music standard that defines various notes or playing codes for electronic musical instruments and other performance devices, and allows electronic musical instruments, computers or other performance equipment to be connected, adjusted and synchronized with each other in order to realize the inter-instrument Real-time exchange of performance data.
  • the MIDI interface is configured for data communication between the electronic percussion melody musical instrument of the present invention and a musical instrument having a MIDI interface, thereby realizing joint performance between multiple musical instruments.
  • the wired transmission interface may also be an optical fiber interface including an optical module, which is configured for data transmission between the musical instrument of the present invention and an external device.
  • the optical module may include a light emitting module and a light receiving module.
  • the electrical signal of the data sent by the main control unit of the musical instrument of the present invention is processed by the driving chip inside the light emitting module, thereby driving the semiconductor laser (LD) or light emitting diode (LED) to emit A modulated optical signal of a corresponding rate is output, and the optical signal is coupled into an optical fiber so as to be transmitted to an external device through the optical fiber.
  • LD semiconductor laser
  • LED light emitting diode
  • the optical signal of the data sent from the external device is processed by the optical detection diode and amplifier inside the optical receiving module, thereby outputting an electrical signal of a corresponding code rate, and transmitting the electrical signal to the main control unit.
  • the data transmission between the musical instrument of the present invention and external equipment through optical signals not only can effectively overcome the disadvantage of large attenuation of electrical signal transmission, but also has faster data transmission speed and stronger anti-interference ability, thereby improving the quality of signal transmission.
  • the wireless transmission interface may be, for example, one or more of a Bluetooth interface, an infrared interface, a WIFI interface, etc., as required.
  • the wireless transmission interface is connected to the main control unit in a wireless manner, so as to realize data transmission between the musical instrument and an external device (for example, a server, a computer, or other musical instruments).
  • 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 of the present invention with an external speaker, wherein Bluetooth is provided in both the musical instrument and the speaker. Module, in order to realize the position of the external loudspeaker conveniently and flexibly according to the needs of live performance.
  • the electronic percussion melody instrument of the present invention may further include a control panel, which is connected to the control unit through a line interface and is configured to perform functional settings on the electronic percussion melody instrument.
  • the control panel may include functional modules such as a display screen, a switch button for different types of piano, and a volume button.
  • the display screen is configured to display the current performance status of the percussion melody instrument.
  • the switching keys of the different types of pianos can be used to select the playing modes of different types of percussion melody instruments such as xylophone, marimba or vibraphone.
  • the volume button is connected to the power amplifier, and is configured to control the size of the piano tone signal.
  • the electronic percussion melody musical instrument of the present invention may further include a power supply module, and the power supply module can realize power supply to the electronic percussion melody musical instrument in a variety of ways. For example, but not limited to, supplying power to the musical instrument through an external mains power supply and a transformer unit provided in the power supply module. It is also possible to supply power to the musical instrument by setting a power adapter. In addition, it is also possible to provide a battery box on the piano body and supply power to the musical instrument through a dry battery.
  • the electronic percussion melody instrument of the present invention When a player needs to use the electronic percussion melody instrument of the present invention as a xylophone, he can set the electronic percussion melody instrument of the present invention as a xylophone by pressing buttons on the control panel.
  • the player strikes the keys with a hammer, for example, the key represented by the note number C.
  • the pressure generated by the percussion is transmitted to the piezoelectric ceramic sensor through the conduction mechanism, and the piezoelectric ceramic sensor releases electrons due to the piezoelectric effect, and converts the mechanical energy generated by the percussion into electrical energy in the form of an analog electrical signal.
  • the key of the hit note number C quickly stops vibrating under the combined action of the anti-vibration composite material and the support in the conductive structure, and is quickly bounced back to the state before being hit, so as to wait Tap next time.
  • the A/D conversion module receives the analog electrical signal sent by the piezoelectric ceramic sensor, and after a series of processing such as sampling, quantization, and encoding, converts the analog electrical signal into a digital electrical signal. Then, the digital electrical signal is processed by a filtering module to effectively filter out high-frequency and low-frequency interference signals. Then, the digital electrical signal related to the key of the note number C after being processed by the filter module is transmitted to the main control unit. Then, the main control unit performs a table lookup in the IC sound source memory to obtain the sound source data [0] associated with the key of the sound source number C. Then, the main control unit outputs the audio source data [0] to the power amplifier.
  • the power amplifier processes the received audio source data [0] signal through the preamplifier circuit, the drive amplifier circuit, and the final power amplifier circuit respectively, and finally amplifies the audio source data [0] signal.
  • the amplified sound source data [0] signal can be transmitted to the speaker in a wired or wireless manner for playback, so the listener will hear the sound produced by hitting the key of the sound source number C. If the performer needs to connect the electronic percussion melody instrument of the present invention to a computer or other electronic musical instruments to perform music learning or joint performance through APP software, they can connect to the above-mentioned equipment through a Bluetooth module or a MIDI interface.
  • the term “if” can be interpreted as “when” or “once” or “in response to determination” or “in response to detection” depending on the context.
  • the phrase “if determined” or “if detected [described condition or event]” can be interpreted as meaning “once determined” or “in response to determination” or “once detected [described condition or event]” depending on the context ]” or “in response to detection of [condition or event described]”.

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Abstract

一种电子打击旋律乐器，包括：琴键模块（110），其包括多个琴键（1101）和多个能量转换单元（1102），其中每个琴键（1101）布置成接受来自外部的敲击，多个能量转换单元（1102）中的每个配置用于感应对琴键（1101）敲击所产生的机械能并且将机械能转换成电信号形式的电能；存储单元（120），其配置用于存储与多个琴键（1101）关联的音源数据；输出单元（130），其配置用于输出与音源数据对应的琴音信号；控制单元（140），其配置用于：接收来自于能量转换单元（1102）的电信号，根据电信号从存储单元（120）获取与电信号关联的音源数据，以及控制输出单元（130）输出与音源数据对应的琴音信号。该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。

Description

电子打击旋律乐器
相关申请的交叉引用
本申请要求于2020年6月18日申请的，申请号为202010561579.4，名称为“电子打击旋律乐器”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本发明一般地涉及音乐器材领域。更具体地，本发明涉及一种电子打击旋律乐器。
背景技术
传统的打击旋律乐器通过敲打由振动材料制成的琴键而发出声音，并且通过共鸣箱体对所述声音进行放大等处理。由于有些所述振动材料选自于非常珍贵的木材，因此造成乐器整体价格昂贵。另外，由于存在共鸣箱体，乐器的体积偏大而不方便携带。
在演奏过程中，现有的电子打击旋律乐器通过对琴键的敲击来控制电路开关的导通而产生与琴声相关的电信号。这种方式产生的电信号通常并不能很好地体现琴键的按压或者敲击力度对于音调和音色的影响，从而影响电子打击旋律乐器的演奏效果。另外，现有的电子打击旋律乐器灵敏度低、功能比较单一并且对外接口较少，因此不能满足演奏者对电子打击旋律乐器的多种功能需求。
发明内容
为至少解决上述背景技术中的一个或多个问题，本发明提供了一种新型的电子打击旋律乐器。该乐器采用能量转换单元将敲击琴键所产生的机械能转化为电流形式的电能，并且可以根据敲击力度的不同而产生大小不同的电流。进一步，本发明的电子打击旋律乐器采用支持各种信号处理和控制的控制单元，从而增强了音乐信号的处理能力。另外，本发明的电子打击旋律乐器具有多种外部接口，以便满足不同的演奏者对乐器的不同使用需求。
具体地，本发明公开了一种电子打击旋律乐器。该乐器包括：琴键模块，其包括多个琴键和多个能量转换单元，其中每个所述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。所述乐器还包括控制单元，其配置用于：接收来自于所述能量转换单元的所述电信号；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。
在一个实施例中，进一步包括琴体，其用于容纳所述控制单元、输出单元和存储单元，所述琴键模块还包括传导结构，其中所述传导结构包括支撑琴键的应力面板和位于琴体一侧的承压底板。所述能量转换单元布置于所述应力面板和承压底板之间。所述多个琴键布置成至少两排，其中第一排为半音区而第二排为全音区，并且通过以下方式之一来进一步布置所述琴键：所述应力面板上布置有支撑件，以用于支撑和固定所述琴键；或者所述琴键包括与所述应力面板贴合的底面和两个侧部，其中所述两个侧部的内表面与所述应力面板和承压底板的端面形成面接触，并且部分地插入到所述琴体内，以支撑和固定所述琴键。
在另一个实施例中，所述应力面板和承压底板之间填充有用于防止所述能量转换单元振动的防振材料。
在另一个实施例中，所述能量转换单元包括压电陶瓷传感器、压力感应传感器、柔性弯曲传感器和振动传感器中的一种或多种。
在一个实施例中，所述电子打击旋律乐器还包括A/D转换模块，其配置用于将所述能量转换单元输出的模拟电信号转换为数字电信号并且向所述控制单元输出。
在另一个实施例中，所述电子打击旋律乐器还包括滤波模块，其配置用于对所述数字电信号进行滤波，并且将滤波后的数字电信号发送到所述控制单元。
在一个实施例中，所述音源数据包括与至少一种琴的音色和/或声效相关的数据。在另一个实施例中，所述至少一种琴包括木琴、颤音琴和马林巴琴中的一种或多种琴。
在另一个实施例中，所述电子打击旋律乐器还包括传输接口，其配置用于使得所述电子打击旋律乐器与外部设备交互，以提供所述电子打击旋律乐器的扩展功能，其中所述传输接口包括有线传输接口和/或无线传输接口，以便提供与所述外部设备的有线和/或无线连接。
在又一个实施例中，所述电子打击旋律乐器还包括控制面板和电源模块，其中所述控制面板与所述控制单元连接，并且配置用于对所述电子打击旋律乐器进行功能设置，而所述电源模块配置用于对所述电子打击旋律乐器进行供电。
本发明的电子打击旋律乐器较好地解决了目前的电子打击乐器对敲击琴键的压力信号接收不灵敏，或者对该压力信号的大小不能识别的问题。同时，本发明的电子打击旋律乐器还可以采用蓝牙等无线模块与外部设备进行通信，并且还设置有多功能面板，从而使得本发明的电子打击旋律乐器体积减小并且方便演奏者演奏。另外，本发明的电子打击旋律乐器还具有成本低、音色好、演奏手感好和抗干扰能力强等优点。
附图说明
通过参考附图阅读下文的详细描述，可以更好地理解本发明的上述特征，并且其众多目的、特征和优点对于本领域技术人员而言是显而易见的。下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可根据这些附图获得其他的附图，其中:
图1是示出根据本发明实施例的电子打击旋律乐器的组成示意框图；
图2是示出根据本发明实施例的电子打击旋律乐器的琴键模块的一种示例性结构图；
图3是示出根据本发明实施例的电子打击旋律乐器的琴键的布置示意图；
图4是示出根据本发明实施例的电子打击旋律乐器的琴键模块的另一种示例性结构图；
图5是示出根据本发明实施例的电子打击旋律乐器的组成框图；以及
图6是示出根据本发明实施例的IC音源存储器的内部结构。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1是示出根据本发明实施例的电子打击旋律乐器100的组成示意框图。如图1所示，本发明的电子打击旋律乐器100可以包括琴键模块110、存储单元120、输出单元130和控制单元140。其中所述琴键模块可以包括多个琴键1101和多个能量转换单元1102。进一步地，每个所述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。
在一个实施例中，上述的存储单元可以配置用于存储与所述多个琴键关联的音源数据。在一个应用场景中，所述音源数据例如可以包括与至少一种琴的音色和/或声效相关的数据。根据本发明的方案，所述至少一种琴可以包括但不限于木琴、颤音琴和马林巴琴中的一种或多种琴。进一步，本发明的电子打击旋律乐器可以根据所述音源数据的不同或琴键模块的不同设置而呈现出与现有的多种打击旋律乐器相同的演奏效果。
在一个实施例中，上述的输出单元可以配置用于输出与所述音源数据对应的琴音信号。在一个应用场景中，所述输出单元可以是包括功率放大器的扬声器，以便将所述琴音信号经过放大并通过声音的形式进行播放。
在一个实施例中，前述的控制单元可以配置用于执行以下的操作：首先，控制单元接收来自于所述能量转换单元的所述电信号。然后，控制单元可以根据所述电信号从所述存储单元中获取与所述电信号关联的音源数据。最后，控制单元可以将所述音源数据发送给输出单元，进而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。
图2是示出根据本发明实施例的电子打击旋律乐器的琴键模块200的一种示例性结构图。如图2所示，本发明的电子打击旋律乐器的琴键模块200可以包括：多个琴键201、由靠近所述琴键的应力面板202和承压底板203组成的传导结构、多个能量转换单元204、琴体205、支撑件206和防振材料207。下面将结合图2和图3分别对所述琴键模块的示例性各组成部分进行详细地描述。
图3是示出根据本发明实施例的电子打击旋律乐器的琴键300的布置示意图。如图3所示，在一个实施例中，所述多个琴键可以是由复合材料制成并且可以布置成两排，其中第一排可以设置为半音区，如图3所示的由音符编号#C、#D、#F、#G和#A…所组成的上排；而第二排可以设置为全音区，如图3所示的由音符编号C、D、E、F、G、A和B…所组成的下排。
在一个或多个实施例中，本发明的所述能量转换单元可以包括压电陶瓷传感器、压力感应传感器、柔性弯曲传感器和振动传感器中的一种或多种。上述多种传感器可以根据对琴键敲击灵敏度的不同需求而进行灵活地布置。在一个实施例中，所述能量 转换单元可以是多个压电陶瓷传感器，该传感器是利用压电陶瓷片的压电效应，将敲击琴键所产生的压力(或应变)转换成电流(或电荷)并进行输出的装置，其中压电陶瓷片是压电陶瓷传感器中关键的部件。从信号变换的角度来看，压电陶瓷片相当于一个电荷发生器。当压电陶瓷片受到外力作用时，其会产生形变并且由于该形变而释放出电荷，进而产生电流并输出。
由于压电陶瓷传感器可以根据所受压力的不同而产生不同大小的电流。因此本发明的电子打击旋律乐器还可以根据演奏者敲击琴键的力度的不同而发出不同音量大小的琴音，从而使得在演奏过程中具有更接近打击传统乐器时的音效。另外，还可以通过增加压电陶瓷传感器的灵敏度来增大演奏者敲击琴键的力度的范围。这里，所述压电陶瓷传感器的灵敏度是指输出的微小电流增量与相应的输入微小压力增量的比值。该比值越大，则压电陶瓷传感器的灵敏度越高，从而可以满足不同敲击力度的演奏者演奏。
所述琴体可以是一个空腔结构，其可以由金属或者复合材料制成。在所述空腔中，可以包括所述存储单元、所述输出单元、所述控制单元、电源模块以及其他附属电路板件或模块。在所述琴体的外表面还可以设置有控制面板和各种传输接口，以方便演奏者进行演奏。
图4是示出根据本发明实施例的电子打击旋律乐器的琴键模块的另一种示例性结构图。如图4所示，本发明的电子打击旋律乐器的琴键模块400可以包括多个琴键401、由应力面板402和承压底板403组成的传导结构、多个能量转换单元404、琴体405和防振材料406。与图2中的琴键模块的结构不同的是，图4中的琴键模块的琴键、琴体和传导结构可以是紧密结合的一体结构。
具体地，所述传导结构包括支撑琴键的应力面板和位于琴体一侧的承压底板，所述能量转换单元布置于所述应力面板和承压底板之间。所述琴键包括与所述应力面板贴合的底面和两个侧部，其可以由一种或多种复合材料或者天然材料制成，优选地，可以是由橡胶制成。所述琴键可以通过以下方式进行布置：所述两个侧部的内表面与所述应力面板和承压底板的端面形成面接触，并且部分地插入到所述琴体预留的孔位内，以便将所述琴体和琴键进行固定。关于所述多个琴键之间的布局、所述能量转换单元、所述琴体以及所述防振材料的描述，详见上述关于图2中所述琴体模块的相应描述，此处不在赘述。下面简要描述图4中所示琴体模块的工作原理。
在敲击琴键进行演奏时，琴键受到压力产生微小的形变，由于琴键、琴体和传导结构之间的紧密结合，使得该微小的形变所产生的压力通过传导结构传递给能量转换单元，并由能量转换单元将该压力转换为电信号并输出给所述乐器的控制单元。在一个实施例中，为了增加所述能量转换单元的感应灵敏度，对应于一个琴键还可以设置如图4所示的多个能量转换单元。通过图4中所示本发明的琴键模块的方案，使得所述琴键模块安全可靠，并且使得本发明的电子打击旋律乐器的体积进一步减小。
图5是示出根据本发明实施例的电子打击旋律乐器500的组成框图。可以理解的是，图5所示的电子打击旋律乐器500是图1所示的电子打击旋律乐器100的一种示例性实施方式，并且包括更多的实施细节。因此，上文中关于电子打击旋律乐器100的描述同样也适用于电子打击旋律乐器500的方案，并且相同的内容不再赘述。
如图5所示，本发明的电子打击旋律乐器500可以包括琴键501、能量转换单元502、A/D转换模块503、滤波模块504、主控单元505、IC音源存储器506、数据存储器507、功率放大器508、扬声器509、蓝牙模块510、光纤模块511和MIDI接口512。
在一个实施例中，所述A/D转换模块包括A/D转换芯片及其附属电路，其配置用于将所述能量转换单元输出的模拟电信号转换为数字电信号并且向所述控制单元输入。具体来说，A/D转换的作用是将时间和幅值连续的模拟信号转换为时间和幅值均离散的数字信号。通常，所述A/D转换需要经过取样、保持、量化及编码4个过程。在实际电路中，前述过程中的某些过程可以合并进行，例如量化和编码往往都是在转换过程中同时实现的。
在一个实施例中，所述滤波模块可以包括滤波器及其附属电路，其配置用于对所述数字电信号进行滤波，并且将滤波后的数字电信号发送到所述控制单元。在演奏电子打击旋律乐器的过程中，由于电子元器件的电气特性，在电路中可能会产生低频或高频的干扰信号，这些干扰信号可能会影响与敲击琴键有关的有用信号的接收。因此，可以将A/D转换模块输出的数字电信号经过例如由电阻和电容组成的滤波器进行处理，以便对其中的干扰信号进行滤除，确保有用信号的正常接收。
在一个实施例中，本发明的存储器可以包括IC音源存储器和数据存储器。其中所述IC音源存储器配置用于存储与所述多个琴键关联的音源数据，所述音源数据包括但不限于与木琴、颤音琴和马林巴琴中的一种或多种琴的音色和/或声效相关的数据。 下面结合图5简要描述IC音源存储器的内部结构。
图6是示出根据本发明实施例的IC音源存储器600的内部结构。如图6所示，所述IC音源存储器存储有音源数据[0]～音源数据[n]的波形数据，其中音源数据[0]是最低音的波形数据，音源数据[n]是最高音的波形数据，其中n值的大小取决于琴键数量的多少。在以相同波长数的量存储音源数据时，由于低音的波长更长，因此相比于与较高的音符编号对应的音源数据，与较低的音符编号对应的音源数据的数据更长，因此其在IC音源存储器中占用的存储空间更大。在一个实施例中，所述音源数据与图3所示的琴键一一对应，例如音源数据[0]可以对应于图3中所示的琴键的音符编号C，音源数据[1]可以对应于例如图3中所示的琴键的音符编号D等。
在一个实施例中，所述数据存储器配置用于存储与控制所述乐器相关模块和单元的运行相关的程序和数据，还可以存储与演奏相关的其他音乐数据。所述数据存储器件与所述主控单元通过总线连接，其可以包括多组存储单元，每一组所述存储单元与所述主控单元通过总线连接。
在一个实施例中，本发明的所述主控单元例如可以采用数字信号处理器(“DSP”)来实现。DSP是适合于进行数字信号处理运算的微处理器，其主要应用是实时快速地实现各种数字信号处理算法。对于本发明来说，采用DSP作为主控单元，可以实时快速地处理音频信号。具体地，首先，所述DSP接收来自于所述能量转换单元输出并经过A/D转换和滤波后的数字电信号；接着，DSP根据所述数字电信号从所述IC音源存储器中获取与所述数字电信号关联的音源数据；最后，DSP将所述音源数据发送给输出单元以便输出与所述音源数据相对应的琴音信号。
在一个实施例中，所述功率放大器可以由三部分组成：前置放大电路、驱动放大电路以及末级功率放大电路。所述前置放大电路配置用于阻抗匹配，其具有输入阻抗高和输出阻抗低的优点，因此可以以尽量小的数据损失来接收并发送所述音源数据的电流信号。所述驱动放大电路配置用于将前置放大电路送来的电流信号进一步放大成中等功率的信号，以便驱动末级功率放大电路正常工作。所述末级功率放大电路在功率放大器中起到关键作用，其技术指标决定了整个功率放大器的技术指标，所述末级功率放大电路配置用于将驱动放大电路送来的电流信号放大成大功率信号，以便带动扬声器进行声音的播放。
在一个实施例中，所述扬声器可以包括磁铁、框架、定心支片、振模折环锥型纸 盆等部件。替代地，所述扬声器还可以包括上述的功率放大器。扬声器俗称“喇叭”，其是一种把电信号转变为声音信号的换能器件。具体地，音频电能信号通过电磁、压电或静电效应，引起扬声器的纸盆或膜片产生振动并与周围的空气产生共振(共鸣)而发出声音。可选地，所述扬声器还可以布置于本发明的电子打击旋律乐器的外部，其可以通过蓝牙等无线通信技术与本发明的电子打击旋律乐器进行无线连接。
在一个实施例中，本发明的电子打击旋律乐器还可以包括传输接口。其配置用于使得所述电子打击旋律乐器与外部设备交互，以提供所述电子打击旋律乐器的扩展功能，其中所述传输接口包括有线传输接口和/或无线传输接口，以便提供与所述外部设备的有线和/或无线连接。作为一个具体的实施式，所述有线传输接口根据需要例如可以是音乐设备数字接口(“Musical Instrument Digital Interface，简称MIDI”)、通用I/O(“General-purpose input/output，简称GPIO”)接口、高速串行计算机扩展总线(“Peripheral Component Interconnect Express，简称PCIE”)接口、串行外设接口(“Serial Peripheral Interface，简称SPI”)和光纤接口等接口的一个或者多个。
所述有线传输接口与所述主控单元电连接，进而实现所述乐器与外部设备(例如服务器、计算机或者其他乐器)之间的数据传输。在一个实施例中，所述有线传输接口例如可以为标准PCIE接口。待处理的数据由主控单元通过标准PCIE接口传递至计算机，进而实现通过计算机对本发明的乐器输出的音频信号进行控制和编辑等操作。
在另一个实施例中，所述有线传输接口还可以是MIDI接口。其中MIDI是一种数字音乐的标准，其为电子乐器等演奏装置定义各种音符或弹奏码，并且容许电子乐器、电脑或其它的演奏设备彼此连接、调节和同步，以便实现各乐器之间实时交换演奏资料。在一个实施例中，所述MIDI接口配置用于本发明的电子打击旋律乐器与具有MIDI接口的乐器之间进行数据通信，进而实现多种乐器之间的联合演奏。
在又一个实施例中，所述有线传输接口还可以是包括光模块的光纤接口，其配置用于本发明的乐器与外部设备之间的数据传输。具体地，所述光模块可以包括光发射模块和光接收模块。在一个应用场景中，一方面，本发明的乐器的主控单元发送来的数据的电信号经过所述光发射模块内部的驱动芯片处理，从而驱动半导体激光器(LD)或发光二极管(LED)发射出相应速率的调制光信号，并且将所述光信号耦合进光纤中，以便通过光纤传输给外部设备。另一方面，外部设备发送来的数据的光信号经过所述光接收模块内部的光探测二极管及放大器处理，从而输出相应码率的电信号，并 且将所述电信号传送给主控单元。本发明的乐器与外部设备之间通过光信号进行数据传输，不但能有效克服电信号传输的衰减大的缺点，而且数据传输速度更快、抗干扰能力更强，从而提高了信号传输的质量。
在另一个实施例中，所述无线传输接口根据需要例如可以是蓝牙接口、红外接口、WIFI接口等接口中的一个或者多个。所述无线传输接口通过无线的方式与所述主控单元连接，进而实现所述乐器与外部设备(例如服务器、计算机或者其他乐器)之间的数据传输。在一个实施例中，所述无线传输接口例如可以是包括蓝牙模块的蓝牙接口，所述蓝牙接口可以用于连接本发明的乐器与外置扬声器，其中在所述乐器与扬声器内均设置有蓝牙模块，以便实现根据现场演奏的需要，方便灵活地摆放外置扬声器的位置。
在一个实施例中，本发明的电子打击旋律乐器还可以包括控制面板，所述控制面板通过线位接口与所述控制单元连接，并且配置用于对所述电子打击旋律乐器进行功能设置。在一个实施例中，所述控制面板例如可以包括显示屏幕、不同种琴的切换按键、音量按键等功能模块。所述显示屏幕配置用于显示当前打击旋律乐器的演奏状态。所述不同种琴的切换按键可以用于选择木琴、马林巴琴或颤音琴等不同种类打击旋律乐器的演奏模式。所述音量按键与所述功率放大器连接，其配置用于控制所述琴音信号的大小。
在一个实施例中，本发明的电子打击旋律乐器还可以包括电源模块，所述电源模块可以通过多种方式实现对所述电子打击旋律乐器进行供电。例如可以是但不限于通过外接市电并且电源模块内部设置变压单元的方式对所述乐器进行供电。还可以是通过设置电源适配器对所述乐器进行供电。另外，还可以是通过在琴体上设置电池盒，并且通过干电池对所述乐器进行供电。
下面以图2中所示琴键模块为例，对本发明的电子打击旋律乐器的工作原理进行详细地描述。
当演奏者需要利用本发明的电子打击旋律乐器作为木琴使用时，其可以在控制面板上通过按键的方式将本发明的电子打击旋律乐器设置为木琴。演奏开始，演奏者用琴槌敲击琴键，例如敲击音符编号C所代表的琴键。该敲击所产生的压力通过传导机构传递给压电陶瓷传感器，压电陶瓷传感器由于压电效应释放电子，将敲击产生的机械能转换为模拟电信号形式的电能。于此同时，被敲击的音符编号C的琴键在传导结 构内的防振复合材料和支撑件的共同作用下迅速停止振动，并且被快速地弹起恢复到被敲击前的状态，以便等待下次敲击。
接着，A/D转换模块接收到压电陶瓷传感器发送来的模拟电信号，在经过取样、量化和编码等一系列处理之后，将所述模拟电信号转变为数字电信号。然后，该数字电信号经过滤波模块处理，以便对其中的高频和低频干扰信号进行有效地滤除。接着，经过滤波模块处理之后的与音符编号C的琴键相关的数字电信号被传送给主控单元。然后，主控单元在IC音源存储器中进行查表以便获取与音源编号C的琴键相关联的音源数据[0]。然后，主控单元将该音源数据[0]向功率放大器输出。
随后，功率放大器将其所接收到的音源数据[0]信号经过前置放大电路、驱动放大电路以及末级功率放大电路分别依次处理，最终将音源数据[0]的信号进行放大。经过放大之后的音源数据[0]的信号可以通过有线或无线的方式传送给扬声器进行播放，于是收听者便收听到敲击音源编号C的琴键所发出的声音。如果演奏者需要将本发明的电子打击旋律乐器连接电脑或其他的电子乐器，从而通过APP软件进行音乐学习或者联合演奏时，则可以通过蓝牙模块或者MIDI接口与上述设备进行连接。
应当理解，本发明的权利要求、说明书及附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。本发明的说明书和权利要求书中使用的术语“包括”和“包含”指示所描述特征、整体、步骤、操作、元素和/或组件的存在，但并不排除一个或多个其它特征、整体、步骤、操作、元素、组件和/或其集合的存在或添加。
还应当理解，在此本发明说明书中所使用的术语仅仅是出于描述特定实施例的目的，而并不意在限定本发明。如在本发明说明书和权利要求书中所使用的那样，除非上下文清楚地指明其它情况，否则单数形式的“一”、“一个”及“该”意在包括复数形式。还应当进一步理解，在本发明说明书和权利要求书中使用的术语“和/或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合，并且包括这些组合。
如在本说明书和权利要求书中所使用的那样，术语“如果”可以依据上下文被解释为“当...时”或“一旦”或“响应于确定”或“响应于检测到”。类似地，短语“如果确定”或“如果检测到[所描述条件或事件]”可以依据上下文被解释为意指“一旦确定”或“响应于确定”或“一旦检测到[所描述条件或事件]”或“响应于检测到[所描述条件或事件]”。
虽然本发明的实施方式如上，但所述内容只是为便于理解本发明而采用的实施例， 并非用以限定本发明的范围和应用场景。任何本发明所述技术领域内的技术人员，在不脱离本发明所揭露的精神和范围的前提下，可以在实施的形式上及细节上作任何的修改与变化，但本发明的专利保护范围，仍须以所附的权利要求书所界定的范围为准。

Claims (10)

  1. 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，其中每个所述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；以及
    控制单元，其配置用于：
    接收来自于所述能量转换单元的所述电信号；
    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。
  2. 根据权利要求1所述的电子打击旋律乐器，进一步包括琴体，其用于容纳所述控制单元、输出单元和存储单元，所述琴键模块还包括传导结构，其中
    所述传导结构包括支撑琴键的应力面板和位于琴体一侧的承压底板，所述能量转换单元布置于所述应力面板和承压底板之间；以及
    所述多个琴键布置成至少两排，其中第一排为半音区而第二排为全音区，并且通过以下方式之一来进一步布置所述琴键：
    所述应力面板上布置有支撑件，以用于支撑和固定所述琴键；或者
    所述琴键包括与所述应力面板贴合的底面和两个侧部，其中所述两个侧部的内表面与所述应力面板和承压底板的端面形成面接触，并且部分地插入到所述琴体内，以支撑和固定所述琴键。
  3. 根据权利要求2所述的电子打击旋律乐器，其中所述应力面板和承压底板之间填充有用于防止所述能量转换单元振动的防振材料。
  4. 根据权利要求1所述的电子打击旋律乐器，其中所述能量转换单元包括压电陶瓷传感器、压力感应传感器、柔性弯曲传感器和振动传感器中的一种或多种。
  5. 根据权利要求1所述的电子打击旋律乐器，还包括A/D转换模块，其配置用于将所述能量转换单元输出的模拟电信号转换为数字电信号并且向所述控制单元输入。
  6. 根据权利要求5所述的电子打击旋律乐器，还包括滤波模块，其配置用于对所述数字电信号进行滤波，并且将滤波后的数字电信号发送到所述控制单元。
  7. 根据权利要求1所述的电子打击旋律乐器，其中所述音源数据包括与至少一种琴的音色和/或声效相关的数据。
  8. 根据权利要求7所述的电子打击旋律乐器，其中所述至少一种琴包括木琴、颤音琴和马林巴琴中的一种或多种琴。
  9. 根据权利要求1所述的电子打击旋律乐器，还包括传输接口，其配置用于使得所述电子打击旋律乐器与外部设备交互，以提供所述电子打击旋律乐器的扩展功能，其中所述传输接口包括有线传输接口和/或无线传输接口，以便提供与所述外部设备的有线和/或无线连接。
  10. 根据权利要求1～9中任意一项所述的电子打击旋律乐器，还包括控制面板和电源模块，其中所述控制面板与所述控制单元连接，并且配置用于对所述电子打击旋律乐器进行功能设置，而所述电源模块配置用于对所述电子打击旋律乐器进行供电。
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CN109360545A (zh) * 2018-11-14 2019-02-19 重庆市星贯众文化艺术传播有限公司 电子手碟
CN110895919A (zh) * 2019-12-05 2020-03-20 深圳市科汇兴科技有限公司 一种手卷马林巴琴
CN111583893A (zh) * 2020-06-18 2020-08-25 陈岳 电子打击旋律乐器
CN111583892A (zh) * 2020-06-18 2020-08-25 陈岳 一种电子打击旋律乐器
CN111986639A (zh) * 2020-09-04 2020-11-24 黄志坚 一种电子打击旋律乐器

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CN114566078A (zh) * 2022-03-11 2022-05-31 牡丹江师范学院 一种便于进行音乐教学的教学用具及其教学方法
CN114566078B (zh) * 2022-03-11 2022-08-26 牡丹江师范学院 一种便于进行音乐教学的教学用具及其教学方法

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