Palm musical instrument

Abstract

An embodiment of the utility model discloses a palm musical instrument, which comprises a body, the body is provided with a USB (universal serial bus) interface and 26 keys, a loudspeaker, a sound source master control circuit, a charging circuit, a battery, an LDO (low dropout regulator) circuit and an audio circuit are integrated in the body, the 26 keys are sequentially arranged according to a musical scale sequence, the charging circuit is electrically connected with the USB interface and the battery, the LDO circuit is electrically connected with the battery, and the audio circuit is electrically connected with the USB interface. The audio circuit is electrically connected with the loudspeaker, and the sound source master control circuit is electrically connected with the LDO circuit, the audio circuit and the 26 keys. The tone tuning device can save tone tuning time, is simple to use, low in learning cost and low in starting difficulty, and is very suitable for children or amateur players to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic organ technical field, especially a kind of palm music piano. BACKGROUND

[0002] Traditional 26-key thumb piano relies on the physical sound of metal elastic sheet and resonance box, and the tone is single, and the length of elastic sheet needs to be adjusted by tuning hammer regularly, which is greatly affected by temperature and humidity;Its volume and tone completely depend on the plucking force and plucking skill, which is difficult to start with, and is not friendly to beginners, and is not suitable for children or amateur players. INVENTION CONTENT

[0003] The utility model embodiment solves the technical problem to provide a kind of palm music piano, to reduce the difficulty of starting.

[0004] In order to solve the above technical problems, the utility model embodiment provides a kind of palm music piano, including body, USB interface and 26 keys are provided on the body, the body is integrated with loudspeaker, sound source main control circuit, charging circuit, battery, LDO circuit, audio circuit, the 26 keys are sequentially arranged in order of scale, charging circuit and USB interface and battery are electrically connected, LDO circuit and battery are electrically connected, audio circuit and loudspeaker are electrically connected, and sound source main control circuit and LDO circuit, audio circuit and 26 keys are electrically connected.

[0005] Further, the body is also integrated with Bluetooth module, and the Bluetooth module is electrically connected with the sound source main control circuit.

[0006] Further, the body is provided with on-off key, and the body is also integrated with on-off control circuit, and the on-off control circuit is electrically connected with the on-off key and the sound source main control circuit.

[0007] Further, the body is provided with function key, and the body is also integrated with function key circuit, and the function key circuit is electrically connected with the function key and the sound source main control circuit.

[0008] Further, the body is provided with a plurality of LED indicator lights, and the body is also integrated with LED driving circuit, and the LED driving circuit is electrically connected with the LED indicator light and the sound source main control circuit.

[0009] Further, the body is also integrated with encoder circuit, and the encoder circuit is electrically connected with the sound source main control circuit.

[0010] Further, the 26 keys include 16 large keys and 10 small keys, and the large keys and the small keys correspond to high pitch and low pitch respectively.

[0011] The utility model has the advantages that the utility model can save tuning time, is simple to use, has low learning cost, has small difficulty of starting, and is very suitable for children or amateur players. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a perspective view of a palm music piano according to an embodiment of the present application from one angle.

[0013] Figure 2 is a perspective view of a palm music piano according to an embodiment of the present application from another angle.

[0014] Figure 3 is a circuit diagram of an audio circuit according to an embodiment of the present application.

[0015] Figure 4 is a circuit diagram of a charging circuit according to an embodiment of the present application.

[0016] Figure 5 is a circuit diagram of a power-on / off control circuit according to an embodiment of the present application.

[0017] Figure 6 is a circuit diagram of an LDO circuit according to an embodiment of the present application.

[0018] Figure 7 is a circuit diagram of an encoder circuit according to an embodiment of the present application.

[0019] Figure 8 is a circuit diagram of a sound source master control circuit according to an embodiment of the present application.

[0020] Figure 9 is a circuit diagram of a Bluetooth module according to an embodiment of the present application.

[0021] Figure 10 is a circuit diagram of a function key according to an embodiment of the present application.

[0022] Figure 11 is a circuit diagram of a function key circuit according to an embodiment of the present application.

[0023] Figure 12 is a circuit diagram of a key according to an embodiment of the present application.

[0024] Figure 13 is a circuit diagram of an LED indicator light according to an embodiment of the present application.

[0025] Figure 14 is a circuit diagram of an LED driving circuit according to an embodiment of the present application.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] Body 1, large key 2, small key 3, USB interface 4, loudspeaker 5, LED indicator light 6, encoder switch 7, earphone interface 8, TYPE-C 2.0 interface 9, function key 10, power-on / off button 11, TF card interface 12. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict, and the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0029] In the embodiments of the present application, if there is a directional indication (such as up, down, left, right, front, back, etc.), it is only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, in the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features.

[0031] Please refer to Figures 1-14 The palm music piano of the embodiment of the present application comprises a body. The body is provided with a USB interface and 26 keys. The body is integrated with a loudspeaker, a sound source main control circuit, a charging circuit, a battery, an LDO circuit and an audio circuit.

[0032] The 26 keys are arranged in order according to the scale (linearly increasing). The 26 keys include 16 large keys and 10 small keys, and the large keys and the small keys correspond to high pitch (covering a higher pitch range, such as C5~A6) and low pitch (strengthening low pitch, such as F2~B3) respectively.

[0033] The charging circuit is electrically connected with the USB interface and the battery. The battery is a rechargeable lithium battery (with a duration of 10~50 hours). The LDO circuit is electrically connected with the battery, the audio circuit is electrically connected with the loudspeaker, and the sound source main control circuit is electrically connected with the LDO circuit, the audio circuit (digital-to-analog conversion) and the 26 keys. The sound source main control circuit identifies the key number and outputs the corresponding audio signal to the loudspeaker through the audio circuit. Preferably, the sound source main control circuit stores multiple timbres (such as original Kalimba, piano, synthetic timbre), supports dynamic sound effects (vibrato, reverberation). Preferably, the body is provided with a TF card interface, and the TF card interface is electrically connected with the sound source main control circuit. The USB interface preferably includes a USB C1 and a TYPE-C 2.0 interface. The present application can read and play music files of multiple formats by using a portable U disk through the USB structure.

[0034] As an embodiment, the body is further integrated with a Bluetooth module, and the Bluetooth module is electrically connected with the sound source main control circuit. The present application supports Bluetooth output. Preferably, the body is further provided with a MIDI interface and an earphone interface.

[0035] As an implementation, the body is provided with a power-on / off button, and a power-on / off control circuit is integrated in the body, and the power-on / off control circuit is electrically connected with the power-on / off button and the sound source master control circuit.

[0036] As an implementation, the body is provided with a function button, and a function button circuit is integrated in the body, and the function button circuit is electrically connected with the function button and the sound source master control circuit.

[0037] As an implementation, the body is provided with a plurality of LED indicator lights, and an LED driving circuit is integrated in the body, and the LED driving circuit is electrically connected with the LED indicator lights and the sound source master control circuit.

[0038] As an implementation, an encoder circuit is integrated in the body, and the encoder circuit is electrically connected with the sound source master control circuit.

[0039] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalent ranges.

Claims

1. A hand-held musical instrument, characterized by, The body is internally integrated with a loudspeaker, a sound source main control circuit, a charging circuit, a battery, an LDO circuit and an audio circuit, the 26 keys are arranged in sequence according to the scale, the charging circuit is electrically connected with the USB interface and the battery, the LDO circuit is electrically connected with the battery, the audio circuit is electrically connected with the loudspeaker, and the sound source main control circuit is electrically connected with the LDO circuit, the audio circuit and the 26 keys.

2. The hand-held musical instrument of claim 1, wherein, The body is internally integrated with a Bluetooth module, and the Bluetooth module is electrically connected with the sound source main control circuit.

3. The hand-held musical instrument of claim 1, wherein, The body is internally integrated with a power-on / off control circuit, and the power-on / off control circuit is electrically connected with the power-on / off key and the sound source main control circuit.

4. The hand-held musical instrument of claim 1, wherein, The body is internally integrated with a function key circuit, and the function key circuit is electrically connected with the function key and the sound source main control circuit.

5. The hand-held musical instrument of claim 1, wherein, The body is internally integrated with an LED driving circuit, and the LED driving circuit is electrically connected with the LED indicator light and the sound source main control circuit.

6. The hand-held musical instrument of claim 1, wherein, The body is internally integrated with an encoder circuit, and the encoder circuit is electrically connected with the sound source main control circuit.

7. The hand-held musical instrument of claim 1, wherein, The 26 keys include 16 large keys and 10 small keys, and the large keys and the small keys correspond to high pitch and low pitch respectively.

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