Portable electronic music synthesizer

Abstract

The invention provides a portable electronic music synthesizer. The portable electronic music synthesizer comprises a main oscillator circuit, a first frequency divider circuit, a frequency selection circuit, a keyboard, a timbre control switch and an octave control switch, the main oscillator circuit is respectively connected with the keyboard and the first frequency divider circuit and is used for generating a main melody oscillation signal based on a control signal given by the keyboard; the first frequency divider circuit is used for performing multiple frequency division on the main melody oscillation signal and outputting multiple frequency division signals respectively; the frequency selection circuit is connected with the first frequency divider circuit, the timbre control switch and the octave control switch, and is used for selecting a plurality of frequency division signals output by the first frequency divider circuit through the timbre control switch and the octave control switch, and outputting a first melody signal. The product cost can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of music performance equipment, and in particular to a portable electronic music synthesizer. Background Art

[0002] In the field of electronic music, due to the lack of interdisciplinary studies and low popularization of knowledge of technical principles, the costs and prices of various equipment tend to be inflated, which brings a large financial burden to buyers and lacks the motivation for design optimization and improvement.

[0003] Among miniature portable musical instruments, acoustic instruments (such as harmonicas, etc.) dominate, while there are not many related implementations of electronic instruments. Only in recent years, as the price of electronic circuit components has gradually decreased, some miniaturized designs have emerged, but generally have relatively simple functions and poor customization, which cannot meet the needs of performance. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a portable electronic music synthesizer.

[0005] One aspect of an embodiment of the present application provides a portable electronic music synthesizer. The portable electronic music synthesizer includes a main oscillator circuit, a first frequency divider circuit, a frequency selection circuit, a keyboard, a timbre control switch, and an octave control switch, wherein the main oscillator circuit is respectively connected to the keyboard and the first frequency divider circuit, and is used to generate a main melody oscillation signal based on a control signal provided by the keyboard; the first frequency divider circuit is used to perform multiple frequency divisions on the main melody oscillation signal and output the multiple frequency division signals respectively; the frequency selection circuit is respectively connected to the first frequency divider circuit, the timbre control switch, and the octave control switch, and is used to select the multiple frequency division signals output by the first frequency divider circuit through the timbre control switch and the octave control switch, and output a first melody signal.

[0006] Furthermore, the first frequency divider is used to divide the main melody oscillation signal to generate square wave signals with a duty cycle of 50% and a frequency division of two, four, eight and sixteen; the frequency selection circuit selects two adjacent square wave signals from the four square wave signals as inputs of the timbre control switch through the octave control switch, and selects one or an average of the two inputs as output through the timbre control switch.

[0007] Furthermore, the portable electronic music synthesizer also includes a voltage signal processing circuit, a low-frequency oscillator circuit, a second frequency divider circuit, a vibrato frequency potentiometer, and a vibrato amplitude potentiometer, wherein the vibrato frequency potentiometer is connected to the low-frequency oscillator circuit, and the low-frequency oscillator circuit is used to generate a low-frequency oscillation signal based on the signal provided by the vibrato frequency potentiometer; the second frequency divider circuit is connected to the low-frequency oscillator circuit, and is used to divide the low-frequency oscillation signal by two to generate a low-frequency oscillation signal with a duty cycle of 50%; the voltage signal processing circuit is respectively connected to the second frequency divider circuit, the vibrato amplitude potentiometer, and the main oscillator circuit, and is used to generate a voltage signal for frequency modulating the main oscillator circuit based on the low-frequency oscillation signal with a duty cycle of 50% output by the second frequency divider circuit and the signal provided by the vibrato amplitude potentiometer.

[0008] Furthermore, the portable electronic music synthesizer also includes a clipping processing circuit and a clipping amplitude potentiometer, wherein the second frequency divider circuit is also used to generate a clipping signal; the clipping processing circuit is respectively connected to the frequency selection circuit, the clipping amplitude potentiometer and the second frequency divider circuit, and is used to process the first melody signal output by the frequency selection circuit, the signal given by the clipping amplitude potentiometer and the clipping signal, and output a second melody signal.

[0009] Furthermore, the portable electronic music synthesizer also includes a sound effect control switch, wherein the sound effect control switch is connected to the voltage signal processing circuit and the clipping processing circuit respectively, and is used to select the signal paths of the voltage signal processing circuit and the clipping processing circuit.

[0010] Furthermore, the portable electronic music synthesizer also includes a power amplifier circuit and a volume potentiometer, wherein the power amplifier circuit is connected to the clipping processing circuit and the volume potentiometer respectively, and is used to generate a third melody signal based on the second melody signal and the signal given by the volume potentiometer.

[0011] Furthermore, the portable electronic music synthesizer also includes an external speaker switch and a speaker, and the speaker is connected to the power amplifier circuit through the external speaker switch; and / or, the portable electronic music synthesizer also includes headphones, and the headphones are connected to the power amplifier circuit.

[0012] Furthermore, the portable electronic music synthesizer also includes a lithium-ion battery, a power switch and a boost circuit, wherein the lithium-ion battery is connected to the boost circuit through the power switch, and the boost circuit is used to boost the voltage provided by the lithium-ion battery to power the corresponding functional modules of the portable electronic music synthesizer.

[0013] Furthermore, the portable electronic music synthesizer also includes a charging circuit and a charging port, wherein the charging circuit is connected to the charging port and connected to the lithium-ion battery for charging the lithium-ion battery.

[0014] Furthermore, the portable electronic music synthesizer also includes a charging indicator light and a full charge indicator light, and both the charging indicator light and the full charge indicator light are connected to the charging circuit.

[0015] Furthermore, the portable electronic music synthesizer further includes a power indicator light, which is connected to one of the power switch and the boost circuit.

[0016] Furthermore, the portable electronic music synthesizer also includes a main power supply, a lighting switch, a current limiting resistor and an LED light, wherein the LED light is arranged adjacent to the keyboard, wherein the main power supply is connected to the boost circuit and is connected to one end of the current limiting resistor through the lighting switch, and the other end of the current limiting resistor is connected to the LED light.

[0017] Furthermore, the portable electronic music synthesizer includes a single-chip microcomputer, wherein the main oscillator circuit, the first frequency divider circuit, the voltage signal processing circuit, the low-frequency oscillator circuit and the second frequency divider circuit are integrated in the single-chip microcomputer.

[0018] Furthermore, the portable electronic music synthesizer includes a single-chip microcomputer, a sound effect control switch, a clipping amplitude potentiometer, a volume potentiometer and a power amplifier circuit, wherein the main oscillator circuit, the first frequency divider circuit, the frequency selection circuit, the voltage signal processing circuit, the low-frequency oscillator circuit and the second frequency divider circuit are integrated in the single-chip microcomputer, and the sound effect control switch and the clipping amplitude potentiometer are both connected to the single-chip microcomputer. The single-chip microcomputer is used to generate the first melody signal based on the signals given by the keyboard, the sound effect control switch, the timbre control switch, the octave control switch, the vibrato amplitude potentiometer and the vibrato frequency potentiometer; the single-chip microcomputer is also used to generate a clipping signal based on the signals given by the sound effect control switch, the vibrato frequency potentiometer and the clipping amplitude potentiometer; the power amplifier circuit is used to perform calculations and power amplification based on the first melody signal, the clipping signal and the signal given by the volume potentiometer, and output a third melody signal.

[0019] Furthermore, the portable electronic music synthesizer also includes a single-chip microcomputer, a sound effect control switch, a function adjustment button and a power amplifier circuit, wherein the main oscillator circuit, the first frequency divider circuit and the frequency selection circuit are integrated in the single-chip microcomputer, the sound effect control switch and the function adjustment button are connected to the single-chip microcomputer, and the single-chip microcomputer is used to generate the first melody signal based on the signals given by the keyboard, the sound effect control switch, the timbre control switch, the octave control switch and the function adjustment button; the single-chip microcomputer is also used to generate a volume signal and a clipping signal based on the signal given by the function adjustment button; the power amplifier circuit is used to perform calculations and power amplification based on the first melody signal, the clipping signal and the volume signal, and output a third melody signal.

[0020] Furthermore, the portable electronic music synthesizer also includes a display screen, the single-chip microcomputer is further used to generate a display signal, and the display screen is connected to the single-chip microcomputer for displaying the display signal.

[0021] Furthermore, the portable electronic music synthesizer also includes a lithium-ion battery and a power switch, wherein the lithium-ion battery is connected to the single-chip microcomputer, the power amplifier circuit and the display screen through the power switch to provide power to them.

[0022] The portable electronic music synthesizer according to one or more embodiments of the present application may have the following beneficial technical effects:

[0023] (1) Improvement of economic benefits: This application significantly reduces the production cost of products with similar functions through optimized design, which can effectively solve the problem of high product prices and difficulty in promotion. By reducing costs, this application makes the product more competitive in the market and easier to be accepted by consumers, thereby expanding market share;

[0024] (2) Functional diversity and customizability: This application adds more freely customizable functions to the product design, allowing consumers to personalize the settings according to their personal needs and preferences, which not only improves the product's use value but also enhances the user experience and makes the product more attractive;

[0025] (3) Easy to operate: This application provides a user-friendly interface and is easy to operate, making it easy for consumers to get started and improving the usability of the product;

[0026] (4) Saving raw materials and processes: This application reduces the use of raw materials, simplifies the production process, and further reduces production costs by optimizing the structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural block diagram of a portable electronic music synthesizer according to the first embodiment of the present application.

[0028] Figure 2 This is a structural block diagram of a portable electronic music synthesizer according to the second embodiment of the present application.

[0029] Figure 3 This is a structural block diagram of a portable electronic music synthesizer according to the third embodiment of the present application.

[0030] Figure 4 This is a structural block diagram of a portable electronic music synthesizer according to the fourth embodiment of the present application. DETAILED DESCRIPTION

[0031] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

[0032] The portable electronic music synthesizer of each embodiment of the present application is described in detail below with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0033] First embodiment

[0034] Figure 1 The structure block diagram of the portable electronic music synthesizer 100 of the first embodiment of the present application is disclosed. Figure 1 As shown, the portable electronic music synthesizer 100 includes a main oscillator circuit 111 , a first frequency divider circuit 112 , a frequency selection circuit 113 , a keyboard 114 , a timbre control switch 115 , and an octave control switch 116 .

[0035] The main oscillator circuit 111 is connected to the keyboard 114 and the first frequency divider circuit 112 respectively, and is used to generate a main melody oscillation signal based on the control signal from the keyboard 114, such as a square wave signal of about several thousand Hz with a variable duty cycle.

[0036] The first frequency divider circuit 112 is used to perform multiple frequency divisions on the main melody oscillation signal output by the main oscillator circuit 111 and output multiple frequency-divided signals respectively.

[0037] The frequency selection circuit 113 is connected to the first frequency divider circuit 112, the timbre control switch 115 and the octave control switch 116 respectively, and is used to select the multiple frequency-divided signals output by the first frequency divider circuit 112 through the timbre control switch 115 and the octave control switch 116, and output the first melody signal.

[0038] Optionally, the first frequency divider circuit 112 is used to divide the main melody oscillation signal to generate square wave signals with a duty cycle of 50% and a frequency division ratio of 2, 4, 8 and 16; the frequency selection circuit 113 selects two adjacent square wave signals from the four square wave signals as inputs of the timbre control switch 115 through the octave control switch 116, and selects one or an average of the two inputs as output through the timbre control switch 115.

[0039] In some embodiments, the portable electronic music synthesizer 100 of the present application further includes a voltage signal processing circuit 121 , a low-frequency oscillator circuit 122 , a second frequency divider circuit 123 , a vibrato frequency potentiometer 124 , and a vibrato amplitude potentiometer 125 .

[0040] The vibrato frequency potentiometer 124 is connected to the low frequency oscillator circuit 122, and the low frequency oscillator circuit 122 is used to generate a low frequency oscillation signal based on the signal provided by the vibrato frequency potentiometer 124. The vibrato frequency potentiometer 124 is used to adjust the frequency of the low frequency oscillator circuit 122.

[0041] The second frequency divider circuit 123 is connected to the low-frequency oscillator circuit 122 and is used to divide the low-frequency oscillation signal into two to generate a low-frequency oscillation signal with a duty cycle of 50%.

[0042] The voltage signal processing circuit 121 is connected to the second frequency divider circuit 123, the vibrato amplitude potentiometer 125, and the main oscillator circuit 111. It generates a voltage signal for frequency modulating the main oscillator circuit 111 based on the low-frequency oscillation signal with a 50% duty cycle output by the second frequency divider circuit 123 and the signal from the vibrato amplitude potentiometer 125. This generates a first melody signal with a vibrato (V) effect. The vibrato amplitude potentiometer 125 adjusts the AC component of the voltage signal used to control the main oscillator.

[0043] In some embodiments, the second frequency divider circuit 123 is further configured to generate a clipping signal. The portable electronic music synthesizer 100 of the present application further includes a clipping processing circuit 131 and a clipping amplitude potentiometer 133. The clipping amplitude potentiometer 133 is configured to adjust the amplitude of the clipping signal.

[0044] The clipping processing circuit 131 is connected to the frequency selection circuit 113, the clipping amplitude potentiometer 133, and the second frequency divider circuit 123, respectively, and is used to process the first melody signal output by the frequency selection circuit 113, the signal output by the clipping amplitude potentiometer 133, and the clipping signal, and output a second melody signal. A tremolo (T) sound effect is added to the second melody signal.

[0045] Optionally, the portable electronic music synthesizer 100 of the present application may further include a sound effect control switch 132. The sound effect control switch 132 is connected to the voltage signal processing circuit 121 and the clipping processing circuit 131 respectively, and is used to select the signal path of the voltage signal processing circuit 121 and the clipping processing circuit 131.

[0046] For example, when neither the signal path of the voltage signal processing circuit 121 nor the signal path of the clipping processing circuit 131 is selected through the sound effect selection switch 132, the portable electronic music synthesizer 100 can output a melody signal without sound effects. When the signal path of the voltage signal processing circuit 121 is selected through the sound effect selection switch 132, the portable electronic music synthesizer 100 can output a melody signal with a vibrato (V) sound effect; when the signal path of the clipping processing circuit 131 is selected through the sound effect selection switch 132, the melody signal can be further clipped, and the portable electronic music synthesizer 100 can output a melody signal with a tremolo (T) sound effect. Thus, the portable electronic music synthesizer 100 of the present application can produce a variety of sound effects, enrich the performer's timbre selection and enhance the performance experience.

[0047] In some embodiments, the portable electronic music synthesizer 100 of the present application further includes a power amplifier circuit 141 and a volume potentiometer 142. The power amplifier circuit 141 is connected to the clipping processing circuit 131 and the volume potentiometer 142, respectively, and is configured to generate a third melody signal based on the second melody signal and the signal provided by the volume potentiometer 142.

[0048] In some embodiments, the portable electronic music synthesizer 100 of the present application may further include an external speaker switch 143 and a speaker 144 , and the speaker 144 is connected to the power amplifier circuit 141 via the external speaker switch 143 .

[0049] In some embodiments, the portable electronic music synthesizer 100 of the present application may further include headphones 145 , which are connected to the power amplifier circuit 141 .

[0050] Continue to refer to Figure 1 The portable electronic music synthesizer 100 of the present application may further include a lithium-ion battery 151 . The lithium-ion battery 151 may provide power for various functional modules of the portable electronic music synthesizer 100 .

[0051] The portable electronic music synthesizer 100 of the present application may further include a power switch 152. The power switch 152 controls the lithium-ion battery 151 to supply power to the portable electronic music synthesizer 100.

[0052] The portable electronic music synthesizer 100 of the present application may further include a boost circuit 153. The lithium-ion battery 151 may be connected to the boost circuit 153 via a power switch 152. The boost circuit 153 is configured to boost the voltage provided by the lithium-ion battery 151 to provide the required power to the corresponding functional modules of the portable electronic music synthesizer 100.

[0053] The portable electronic music synthesizer 100 of the present application is powered by a lithium-ion battery 151 instead of a traditional dry cell battery, thereby improving the convenience of use and reducing the cost of power supply.

[0054] In some embodiments, the portable electronic music synthesizer 100 of the present application may further include a charging circuit 161 and a charging port 162. The charging circuit 161 is connected to the charging port 162 and to the lithium-ion battery 151 for charging the lithium-ion battery 151. The charging port 162 may, for example, include a Type-C port. This allows the portable electronic music synthesizer 100 of the present application to more conveniently obtain power and reduces the need for frequent battery replacement.

[0055] In some embodiments, the portable electronic music synthesizer 100 of the present application may further include a charging indicator light 163 and a full charge indicator light 164, both of which are connected to the charging circuit 161. When an external power source is connected to the charging port 162 to charge the lithium-ion battery 151 inside the portable electronic music synthesizer 100, the charging indicator light 163 lights up; when the lithium-ion battery 151 is fully charged, the charging indicator light 163 goes out and the full charge indicator light 164 lights up.

[0056] In some embodiments, the portable electronic music synthesizer 100 of the present application may further include a power indicator light 154, which is connected to one of the power switch 152 and the boost circuit 153. When the power switch 152 is turned on, the power indicator light 154 is on; when the power switch 152 is turned off, the power indicator light 154 is off.

[0057] In some embodiments, the portable electronic music synthesizer 100 of the present application may further include a main power supply (not shown), a lighting switch (not shown), a current-limiting resistor (not shown), and an LED (Light-Emitting Diode) lamp (not shown). The main power supply is connected to the boost circuit 153 and is connected to one end of the current-limiting resistor via the lighting switch, and the other end of the current-limiting resistor is connected to the LED lamp. The LED lamp can be arranged near the keyboard 114 so as to provide lighting for the keyboard 114, thereby making it easier for the user to see the shape and characteristics of the keyboard 114 in a dark environment.

[0058] Second embodiment

[0059] Figure 2 The structure block diagram of the portable electronic music synthesizer 200 of the second embodiment of the present application is disclosed. Figure 2 As shown, Figure 1 The difference between the portable electronic music synthesizer 100 of the first embodiment shown is that the portable electronic music synthesizer 200 of the second embodiment includes a single chip microcomputer 201, wherein: Figure 1 The main oscillator circuit 111, the first frequency divider circuit 112, the voltage signal processing circuit 121, the low-frequency oscillator circuit 122 and the second frequency divider circuit 123 shown in the figure can be integrated into the single chip microcomputer 201, so that the single chip microcomputer 201 can integrate the functions of the corresponding functional modules.

[0060] Specifically, the portable electronic music synthesizer 200 of the second embodiment includes a key microcontroller 201 , a disk 114 , a timbre control switch 115 , an octave control switch 116 , a vibrato amplitude potentiometer 125 , and a frequency selection circuit 113 .

[0061] The keyboard 114 and the vibrato amplitude potentiometer 125 are each connected to the single-chip microcomputer 201 as inputs to the single-chip microcomputer 201, which is configured to output a plurality of frequency-divided signals. The frequency selection circuit 113 is connected to the timbre control switch 115, the octave control switch 116, and the single-chip microcomputer 201. The frequency selection circuit 113 selects the plurality of frequency-divided signals output by the single-chip microcomputer 201 through the timbre control switch 115 and the octave control switch 116, and outputs a first melody signal.

[0062] In some embodiments, the portable electronic music synthesizer 200 of the second embodiment further includes a vibrato frequency potentiometer 124 and a sound effect control switch 132. The vibrato frequency potentiometer 124 and the sound effect control switch 132 are connected to a single-chip microcomputer 201, which is further configured to generate a clipping signal based on signals from the sound effect control switch 132 and the vibrato frequency potentiometer 124.

[0063] The parts of the portable electronic music synthesizer 200 of the second embodiment that are the same as those of the portable electronic music synthesizer 200 of the first embodiment can be referred to the above description of the first embodiment, and will not be repeated here.

[0064] Third embodiment

[0065] Figure 3 The structure block diagram of the portable electronic music synthesizer 300 of the third embodiment of the present application is disclosed. Figure 3 As shown, Figure 1 The difference between the portable electronic music synthesizer 100 of the first embodiment shown is that the portable electronic music synthesizer 300 of the third embodiment includes a single chip microcomputer 301, wherein: Figure 1The main oscillator circuit 111, the first frequency divider circuit 112, the frequency selection circuit 113, the voltage signal processing circuit 121, the low frequency oscillator circuit 122 and the second frequency divider circuit 123 shown can be integrated into the microcontroller 301, so that the microcontroller 301 can integrate the functions of the corresponding functional modules.

[0066] Specifically, the portable electronic music synthesizer 300 of the third embodiment includes a single-chip microcomputer 301, a keyboard 114, a sound effect control switch 132, a timbre control switch 115, an octave control switch 116, a vibrato amplitude potentiometer 125, a vibrato frequency potentiometer 124, a clipping amplitude potentiometer 133, a volume potentiometer 142 and a power amplifier circuit 141.

[0067] Among them, the keyboard 114, the sound effect control switch 132, the timbre control switch 115, the octave control switch 116, the vibrato amplitude potentiometer 125, the vibrato frequency potentiometer 124 and the clipping amplitude potentiometer 133 are respectively connected to the single-chip microcomputer 301 as inputs of the single-chip microcomputer 301, and the single-chip microcomputer 301 is used to generate a first melody signal based on the signals given by the keyboard 114, the sound effect control switch 132, the timbre control switch 115, the octave control switch 116, the vibrato amplitude potentiometer 125 and the vibrato frequency potentiometer 124.

[0068] The single chip microcomputer 301 is further configured to generate a clipping signal based on signals provided by the sound effect control switch 132 , the vibrato frequency potentiometer 124 and the clipping amplitude potentiometer 133 .

[0069] The power amplifier circuit 141 is used to perform calculation and power amplification based on the first melody signal output by the single chip microcomputer 301, the clipping signal and the signal provided by the volume potentiometer 142, and output a third melody signal.

[0070] The parts of the portable electronic music synthesizer 300 of the third embodiment that are the same as those of the portable electronic music synthesizer 300 of the first embodiment can be referred to the above description of the first embodiment, and will not be repeated here.

[0071] In addition, in the portable electronic music synthesizer 300 of the third embodiment, the boosting circuit 153 is optional.

[0072] In some embodiments, the portable electronic music synthesizer 300 of the present application may further include a display screen 302. Display screen 302 may include, for example, an OLED (Organic Light-Emitting Diode) display screen. The microcontroller 301 is further configured to generate a display signal, and the display screen 302 is connected to the microcontroller 301 to display the display signal.

[0073] Fourth embodiment

[0074] Figure 4 The structure block diagram of the portable electronic music synthesizer 400 of the fourth embodiment of the present application is disclosed. Figure 4 As shown, Figure 3 The difference between the portable electronic music synthesizer 300 of the third embodiment shown is that the portable electronic music synthesizer 400 of the fourth embodiment includes a single-chip microcomputer 401, a keyboard 114, a sound effect control switch 132, a tone control switch 115, an octave control switch 116, function adjustment buttons and a power amplifier circuit 141.

[0075] The keyboard 114, the sound effect control switch 132, the timbre control switch 115, the octave control switch 116, and the function adjustment keys are respectively connected to the single-chip microcomputer 201 as inputs of the single-chip microcomputer 201. The single-chip microcomputer 201 is configured to generate a first melody signal based on signals from the keyboard 114, the sound effect control switch 132, the timbre control switch 115, the octave control switch 116, and the function adjustment keys.

[0076] The single chip microcomputer 201 is further configured to generate a clipping signal based on the signal from the sound effect control switch 132 and the function adjustment button. The clipping signal is a PWM signal.

[0077] The single chip microcomputer 201 is further configured to generate a volume signal based on a signal from a function adjustment key, where the volume signal is a PWM signal.

[0078] The power amplifier circuit 141 is connected to the single chip microcomputer 401 and is used to perform calculation and power amplification based on the first melody signal, the clipping signal and the volume signal, and output a third melody signal.

[0079] In some embodiments, the portable electronic music synthesizer 100 of the present application further includes a lithium-ion battery 151 and a power switch 152 , wherein the lithium-ion battery 151 is connected to the microcontroller 201 , the power amplifier circuit 141 and the display screen 302 via the power switch 152 to power them.

[0080] The parts of the portable electronic music synthesizer 100 of the fourth embodiment that are the same as those of the portable electronic music synthesizer 100 of the third embodiment can be referred to the above description of the third embodiment, and will not be repeated here.

[0081] The portable electronic music synthesizer 100 / 200 / 300 / 400 of the present application can have the following beneficial technical effects:

[0082] (1) Improvement of economic benefits: This application significantly reduces the production cost of products with similar functions through optimized design, which can effectively solve the problem of high product prices and difficulty in promotion. By reducing costs, this application makes the product more competitive in the market and easier to be accepted by consumers, thereby expanding market share;

[0083] (2) Functional diversity and customizability: This application adds more freely customizable functions to the product design, allowing consumers to personalize the settings according to their personal needs and preferences, which not only improves the product's use value but also enhances the user experience and makes the product more attractive;

[0084] (3) Easy to operate: This application provides a user-friendly interface and is easy to operate, making it easy for consumers to get started and improving the usability of the product;

[0085] (4) Saving raw materials and processes: This application reduces the use of raw materials, simplifies the production process, and further reduces production costs by optimizing the structural design.

[0086] The portable electronic music synthesizer provided in the embodiment of the present application is described in detail above. Specific examples are used herein to illustrate the portable electronic music synthesizer in the embodiment of the present application. The description of the above embodiment is only used to help understand the core concept of the present application and is not intended to limit the present application. It should be pointed out that for those skilled in the art, without departing from the spirit and principles of the present application, various improvements and modifications may be made to the present application, and such improvements and modifications shall also fall within the scope of protection of the claims appended to the present application.

Claims

1. A portable electronic music synthesizer, characterized in that: It includes a main oscillator circuit, a first frequency divider circuit, a frequency selection circuit, a keyboard, a tone control switch and an octave control switch, wherein: The main oscillator circuit is connected to the keyboard and the first frequency divider circuit respectively, and is used to generate a main melody oscillation signal based on a control signal given by the keyboard; The first frequency divider circuit is used to perform multiple frequency divisions on the main melody oscillation signal and output multiple frequency division signals respectively; The frequency selection circuit is connected to the first frequency divider circuit, the timbre control switch and the octave control switch respectively, and is used to select multiple frequency-divided signals output by the first frequency divider circuit through the timbre control switch and the octave control switch, and output a first melody signal.

2. The portable electronic music synthesizer according to claim 1, wherein: The first frequency divider is used to divide the frequency of the main melody oscillation signal to generate square wave signals of divided-by-two, divided-by-four, divided-by-eight and divided-by-sixteen with a duty cycle of 50%; The frequency selection circuit selects two adjacent square wave signals from the four square wave signals as inputs of the timbre control switch through the octave control switch, and selects one or an average value of the two inputs as output through the timbre control switch.

3. The portable electronic music synthesizer according to claim 1, wherein: It also includes a voltage signal processing circuit, a low-frequency oscillator circuit, a second frequency divider circuit, a vibrato frequency potentiometer and a vibrato amplitude potentiometer, wherein: The vibrato frequency potentiometer is connected to the low-frequency oscillator circuit, and the low-frequency oscillator circuit is used to generate a low-frequency oscillation signal based on a signal given by the vibrato frequency potentiometer; The second frequency divider circuit is connected to the low-frequency oscillator circuit and is used to divide the low-frequency oscillation signal by two to generate a low-frequency oscillation signal with a duty cycle of 50%; The voltage signal processing circuit is respectively connected to the second frequency divider circuit, the vibrato amplitude potentiometer and the main oscillator circuit, and is used to generate a voltage signal for frequency modulating the main oscillator circuit based on the low-frequency oscillation signal with a duty cycle of 50% output by the second frequency divider circuit and the signal provided by the vibrato amplitude potentiometer.

4. The portable electronic music synthesizer according to claim 3, wherein: It also includes a clipping processing circuit and a clipping amplitude potentiometer, wherein, The second frequency divider circuit is further configured to generate a clipping signal; The clipping processing circuit is respectively connected to the frequency selection circuit, the clipping amplitude potentiometer and the second frequency divider circuit, and is used to process the first melody signal output by the frequency selection circuit, the signal given by the clipping amplitude potentiometer and the clipping signal, and output a second melody signal.

5. The portable electronic music synthesizer according to claim 4, wherein: Also includes a sound effect control switch, wherein: The sound effect control switch is connected to the voltage signal processing circuit and the clipping processing circuit respectively, and is used to select the signal paths of the voltage signal processing circuit and the clipping processing circuit.

6. The portable electronic music synthesizer according to claim 5, wherein: It also includes power amplifier circuit and volume potentiometer, among which, The power amplifier circuit is connected to the clipping processing circuit and the volume potentiometer respectively, and is used to generate a third melody signal based on the second melody signal and the signal provided by the volume potentiometer.

7. The portable electronic music synthesizer according to claim 6, wherein: The portable electronic music synthesizer further includes an external speaker switch and a speaker, wherein the speaker is connected to the power amplifier circuit via the external speaker switch; and / or, The portable electronic music synthesizer further comprises headphones connected to the power amplifier circuit.

8. The portable electronic music synthesizer according to claim 1, wherein: It also includes a lithium-ion battery, a power switch and a boost circuit, wherein: The lithium-ion battery is connected to the boost circuit via the power switch, and the boost circuit is used to boost the voltage provided by the lithium-ion battery to power corresponding functional modules of the portable electronic music synthesizer.

9. The portable electronic music synthesizer according to claim 8, wherein: It also includes a charging circuit and a charging port, wherein: The charging circuit is connected to the charging port and to the lithium-ion battery, and is used to charge the lithium-ion battery.

10. The portable electronic music synthesizer according to claim 9, wherein: It also includes a charging indicator light and a full charge indicator light, both of which are connected to the charging circuit.

11. The portable electronic music synthesizer according to claim 8, wherein: It also includes a power indicator light, which is connected to one of the power switch and the boost circuit.

12. The portable electronic music synthesizer according to claim 8, wherein: It also includes a main power supply, a lighting switch, a current limiting resistor and an LED lamp, among which, The LED lamp is arranged adjacent to the keyboard, the main power supply is connected to the boost circuit and is connected to one end of the current limiting resistor through the lighting switch, and the other end of the current limiting resistor is connected to the LED lamp.

13. The portable electronic music synthesizer according to any one of claims 3 to 12, characterized in that: The portable electronic music synthesizer includes a single-chip microcomputer, wherein the main oscillator circuit, the first frequency divider circuit, the voltage signal processing circuit, the low-frequency oscillator circuit and the second frequency divider circuit are integrated in the single-chip microcomputer.

14. The portable electronic music synthesizer according to claim 3, wherein: The portable electronic music synthesizer includes a single chip microcomputer, a sound effect control switch, a clipping amplitude potentiometer, a volume potentiometer and a power amplifier circuit, wherein: The main oscillator circuit, the first frequency divider circuit, the frequency selection circuit, the voltage signal processing circuit, the low-frequency oscillator circuit and the second frequency divider circuit are integrated in the single chip microcomputer. The sound effect control switch and the clipping amplitude potentiometer are both connected to the single chip microcomputer. The single chip microcomputer is used to generate the first melody signal based on the signals given by the keyboard, the sound effect control switch, the timbre control switch, the octave control switch, the vibrato amplitude potentiometer and the vibrato frequency potentiometer; The single chip microcomputer is further configured to generate a clipping signal based on signals from the sound effect control switch, the vibrato frequency potentiometer, and the clipping amplitude potentiometer; The power amplifier circuit is used to perform calculation and power amplification based on the first melody signal, the clipping signal and the signal provided by the volume potentiometer, and output a third melody signal.

15. The portable electronic music synthesizer according to claim 1, wherein: The portable electronic music synthesizer also includes a single chip microcomputer, a sound effect control switch, a function adjustment button and a power amplifier circuit, wherein: The main oscillator circuit, the first frequency divider circuit and the frequency selection circuit are integrated in the single chip microcomputer. The sound effect control switch and the function adjustment button are connected to the single chip microcomputer. The single chip microcomputer is used to generate the first melody signal based on the signals given by the keyboard, the sound effect control switch, the timbre control switch, the octave control switch and the function adjustment button; The single chip microcomputer is further used to generate a volume signal and a clipping signal based on the signal given by the function adjustment button; The power amplifier circuit is used to perform calculation and power amplification based on the first melody signal, the clipping signal and the volume signal, and output a third melody signal.

16. The portable electronic music synthesizer according to claim 14 or 15, characterized in that: It also includes a display screen, and the single chip microcomputer is further used to generate a display signal. The display screen is connected to the single chip microcomputer and is used to display the display signal.

17. The portable electronic music synthesizer according to claim 16, wherein: Also includes a lithium-ion battery and a power switch, wherein The lithium-ion battery is connected to the single-chip microcomputer, the power amplifier circuit and the display screen through the power switch to supply power to them.

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