Multi-functional sound box

Abstract

The utility model discloses a multifunctional sound box relates to sound box technical field. The sound box includes: bluetooth module, audio input module, microphone module, mixed module, analog power amplifier module, digital power amplifier module, power amplifier switching module, loudspeaker, switching power module and battery management module, bluetooth module is used for receiving bluetooth signal and amplifying, audio input module is used for obtaining audio input signal and amplifying, microphone module is used for receiving microphone signal and amplifying, mixed module is used for mixing after amplifying bluetooth signal, audio input signal and microphone signal, obtains mixed signal, power amplifier switching module is used for switching digital power amplifier module and analog power amplifier module and the connection state of loudspeaker. The multifunctional sound box can use analog power amplifier module when using at home, only needs to carry main sound box when going out, by lithium cell power supply, automatically switches for digital power amplifier module, realizes one box multi -use, has very high cost performance.

Description

Technical Field

[0001] This utility model relates to the field of speaker technology, and in particular to a multifunctional speaker. Background Technology

[0002] There are generally two types of home speakers. One type is for fixed home use, with two channels, used for music enjoyment and television audio. It uses two speakers and employs analog amplifier circuitry to ensure sound quality. The other type is for outdoor use, such as square dancing or playing electronic musical instruments. It only requires one speaker, powered by a lithium battery, and uses a digital amplifier to improve power efficiency and extend battery life. These two types of products have different uses and cannot replace each other, thus their application scenarios are relatively limited. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a multifunctional speaker that can be used for a variety of different purposes.

[0004] On one hand, the multifunctional speaker according to an embodiment of the present utility model includes:

[0005] A Bluetooth module is used to receive Bluetooth signals and amplify the Bluetooth signals;

[0006] An audio input module is used to acquire an audio input signal and amplify the audio input signal;

[0007] A microphone module is used to receive microphone signals and amplify the microphone signals;

[0008] The mixing module has its input terminals electrically connected to the output terminals of the Bluetooth module, the audio input module, and the microphone module, respectively, and is used to mix at least one of the amplified Bluetooth signal, the audio input signal, and the microphone signal to obtain a mixed signal;

[0009] The analog power amplifier module has its input terminal electrically connected to the output terminal of the hybrid module;

[0010] The digital power amplifier module has its input terminal electrically connected to the output terminal of the hybrid module;

[0011] The power amplifier switching module has its input terminal electrically connected to the output terminals of the digital power amplifier module and the analog power amplifier module, respectively, and its output terminal electrically connected to the speaker. The power amplifier switching module is used to switch the connection status between the analog power amplifier module and the digital power amplifier module and the speaker.

[0012] A switching power supply module is used to provide corresponding operating voltages for the Bluetooth module, the audio input module, the microphone module, the mixing module, the analog power amplifier module, and the power amplifier switching module;

[0013] The battery management module is electrically connected to the switching power supply module and the digital power amplifier module. The switching power supply module provides the corresponding operating voltage to the battery management module. The battery management module manages the charging and discharging of the battery, increases the battery voltage to power the digital power amplifier module, and provides the corresponding operating voltage to the Bluetooth module, the audio input module, the microphone module, and the mixing module through the battery.

[0014] According to some embodiments of the present invention, the multifunctional speaker further includes an audio output amplification module, which is used to amplify the audio output signal of the multifunctional speaker.

[0015] According to some embodiments of the present invention, the Bluetooth module includes a Bluetooth signal receiving unit and a Bluetooth signal amplifying unit. The output terminal of the Bluetooth signal receiving unit is electrically connected to the input terminal of the Bluetooth signal amplifying unit, and the output terminal of the Bluetooth signal amplifying unit is electrically connected to the input terminal of the hybrid module. The Bluetooth signal receiving unit is used to receive Bluetooth signals, and the Bluetooth signal amplifying unit is used to amplify the Bluetooth signals.

[0016] According to some embodiments of the present invention, the microphone module includes an ear-hook wireless microphone receiving unit, a handheld wireless microphone receiving unit, and a microphone signal amplification unit. The ear-hook wireless microphone receiving unit and the handheld wireless microphone receiving unit are used to receive microphone signals, and the microphone signal amplification unit is used to amplify the microphone signals.

[0017] According to some embodiments of this utility model, the loudspeaker includes a first loudspeaker and a second loudspeaker; the power amplifier switching module includes a first relay and a second relay, the normally closed contact of the first relay is electrically connected to the first output terminal of the digital power amplifier module, the normally open contact of the first relay is electrically connected to the first output terminal of the analog power amplifier module, and the common contact of the first relay is electrically connected to the first terminal of the first loudspeaker; the normally closed contact of the second relay is electrically connected to the second output terminal of the digital power amplifier module, the normally open contact of the second relay is grounded through a capacitor, the common contact of the second relay is electrically connected to the second terminal of the first loudspeaker, the first terminal of the second loudspeaker is electrically connected to the second output terminal of the analog power amplifier module, and the second terminal of the second loudspeaker is electrically connected to the common contact of the second relay.

[0018] According to some embodiments of this utility model, a filtering module is provided between the output terminal of the digital power amplifier module and the input terminal of the power amplifier switching module. The filtering module is used to filter the output of the digital power amplifier module.

[0019] The multi-functional speaker according to this utility model embodiment has at least the following beneficial effects: When used at home, it can be powered by AC power and automatically switches to an analog amplifier module. Using a pair of speakers, it can connect to a mobile phone via Bluetooth to play music, or use the microphone provided with the speaker for karaoke, or connect to a TV set-top box for audio playback. When going out, only the main speaker needs to be carried; powered by a lithium battery, it automatically switches to a digital amplifier module, with an output power equivalent to analog dual-channel, and the functions and usage are the same as when using AC power at home. This utility model not only achieves multiple uses in one speaker but also leverages the strengths of each component, offering high cost-effectiveness and a promising market prospect.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of the multifunctional speaker according to an embodiment of the present utility model;

[0023] Figure 2 This is a circuit diagram of the switching power supply module according to an embodiment of the present invention;

[0024] Figure 3 This is a circuit diagram of the battery management module according to an embodiment of the present invention;

[0025] Figure 4 The circuit diagrams for the Bluetooth module, audio input module, microphone module, mixing module, analog power amplifier module, and power amplifier switching module are shown in the embodiments of this utility model.

[0026] Figure 5 This is a circuit diagram of the digital power amplifier module according to an embodiment of the present invention. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. The step numbers in the following embodiments are set only for ease of explanation, and there is no limitation on the order between the steps. The execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0030] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] There are generally two types of home speakers. One type is for fixed home use, with two channels, used for music enjoyment and television audio. It uses two speakers and employs analog amplifier circuitry to ensure sound quality. The other type is for outdoor use, such as square dancing or playing electronic musical instruments. It only requires one speaker, powered by a lithium battery, and uses a digital amplifier to improve power efficiency and extend battery life. These two types of products have different uses and cannot replace each other, thus their application scenarios are relatively limited.

[0032] Therefore, this utility model proposes a multi-functional speaker. When used at home, it can operate on AC power and automatically switch to an analog amplifier module. Using a pair of speakers, it can connect to a mobile phone via Bluetooth to play music, or use the microphone provided with the speaker for karaoke, or connect to a TV set-top box for audio playback. When out and about, only the main speaker needs to be carried; powered by a lithium battery, it automatically switches to a digital amplifier module, with output power equivalent to analog dual-channel, and the functions and usage are the same as when using AC power at home. This utility model not only achieves multiple uses in one speaker but also leverages the strengths of each component, offering high cost-effectiveness and promising market prospects.

[0033] The multifunctional speaker of this utility model embodiment is described in detail below with reference to the accompanying drawings.

[0034] This utility model embodiment proposes a multifunctional speaker, such as Figure 1As shown, it includes a Bluetooth module 100, an audio input module 200, a microphone module 300, a mixing module 400, an analog power amplifier module 500, a digital power amplifier module 600, a power amplifier switching module 700, a speaker 800, a switching power supply module 900, and a battery management module 1000. The Bluetooth module 100 receives audio signals from devices connected to the speaker via Bluetooth and amplifies the received Bluetooth signals. The audio input module 200 receives audio input signals from audio source devices (such as computers / televisions) connected to the speaker and amplifies the audio input signals. The microphone module 300 receives microphone signals from wireless / wired microphones and amplifies the microphone signals. The input terminal of the mixing module 400 is electrically connected to the output terminals of the Bluetooth module 100, audio input module 200, and microphone module 300, respectively, and is used to mix the amplified Bluetooth signal, audio input signal, and microphone signal to obtain a mixed signal. The input terminal of the analog power amplifier module 500 and the digital power amplifier module 600 are connected to the output terminals of the digital power amplifier module 600. The input terminals of the 0 module are all electrically connected to the output terminals of the mixing module 400. The input terminals of the power amplifier switching module 700 are electrically connected to the output terminals of the digital power amplifier module 600 and the analog power amplifier module 500, respectively. The output terminal of the power amplifier switching module 700 is electrically connected to the speaker 800. The power amplifier switching module 700 is used to switch the connection status between the digital power amplifier module 600, the analog power amplifier module 500, and the speaker 800. The switching power supply module 900 is used to provide the corresponding operating voltage to the Bluetooth module 100, the audio input module 200, the microphone module 300, the mixing module 400, the analog power amplifier module 500, and the power amplifier switching module 700. The battery management module 1000 is electrically connected to the switching power supply module 900. The switching power supply module 900 is used to provide the corresponding operating voltage to the battery management module 1000. The battery management module 1000 is used to manage the charging and discharging of the battery and to provide the corresponding operating voltage to the Bluetooth module 100, the audio input module 200, the microphone module 300, the mixing module 400, and the digital power amplifier module 600 through the battery.

[0035] According to the multi-functional speaker of this utility model embodiment, when the switching power supply module 900 is connected to an external 220V AC power supply, the switching power supply module 900 converts the AC power into various DC voltages such as 24V, 12V, 5V, and 4.2V to provide operating voltage to the Bluetooth module 100, audio input module 200, microphone module 300, mixing module 400, analog power amplifier module 500, and power amplifier switching module 700. This allows the Bluetooth module 100, audio input module 200, and microphone module 300 to input the obtained audio signals to the mixing module 400 for mixing. The mixing module 400 then outputs the mixed signal to the analog power amplifier module 500, causing the analog power amplifier module 500 to output a dual-channel signal to the speaker 800. In this state, the power amplifier switching module 700 disconnects the digital power amplifier module 600 from the speaker 800, and the digital power amplifier module 600 does not work. At the same time, the switching power supply module 900 controls the battery management module 1000 to charge the battery based on the battery status. When the speaker needs to be taken out, the switching power supply module 900 disconnects from the external AC power supply. The battery provides the corresponding operating voltage to the Bluetooth module 100, audio input module 200, microphone module 300, mixing module 400, and digital amplifier module 600. At this time, the digital amplifier module 600 is connected to the speaker 800, while the amplifier switching module 700 disconnects the analog amplifier module 500 from the speaker 800. The Bluetooth module 100, audio input module 200, and microphone module 300 input the obtained audio signals to the mixing module 400 for mixing. The mixing module 400 then outputs the mixed signal to the digital amplifier module 500, so that the digital amplifier module 500 outputs a mono signal to the speaker 800.

[0036] Therefore, the multi-functional speaker according to this embodiment can be used at home with AC power, automatically switching to analog amplifier module 500. A pair of speakers can be used to connect to a mobile phone via Bluetooth to play music, or to sing karaoke using the microphone provided with the speaker, or to connect to a TV set-top box for audio playback. When going out, only the main speaker needs to be carried, powered by a lithium battery, which automatically switches to digital amplifier module 600, with an output power equivalent to analog dual-channel. The function and usage are the same as when using AC power at home. This invention not only achieves multiple uses in one speaker but also leverages the advantages of each component, offering high cost-effectiveness and a promising market prospect.

[0037] Furthermore, in some embodiments of this utility model, the Bluetooth module 100 includes a Bluetooth signal receiving unit and a Bluetooth signal amplifying unit. The output terminal of the Bluetooth signal receiving unit is electrically connected to the input terminal of the Bluetooth signal amplifying unit, and the output terminal of the Bluetooth signal amplifying unit is electrically connected to the input terminal of the mixing module 400. The Bluetooth signal receiving unit is used to receive Bluetooth signals, and the Bluetooth signal amplifying unit is used to amplify the Bluetooth signals. The Bluetooth signal receiving unit has a display screen and a USB port, and is a separate circuit board. It receives 5V power from the motherboard through a connector. After acquiring the Bluetooth signal, it sends the dual-channel audio signal back to the Bluetooth signal amplifying unit on the motherboard for amplification. Figure 4 As shown, the Bluetooth signal amplification unit is connected to the Bluetooth signal receiving unit via JP2-1. The Bluetooth signal amplification unit includes chip U1, which has dual operational amplifiers, one for each of the left and right channels, for amplifying the left and right dual channel signals. The output signal of chip U1 is output to chip U2 of the mixing module 400 through capacitor C3, resistor R3, capacitor C7, and resistor R7.

[0038] Furthermore, such as Figure 4 As shown, in some embodiments of this utility model, the audio input module 200 is connected to the audio input signal via JP7-1. The audio input module 200 includes a chip U5, which has dual operational amplifiers for amplifying the left and right channels of the audio input signal, respectively. The output of the chip U5 is sent to the chip U2 of the mixing module 400 via capacitor C31, resistor R35, capacitor C34, and resistor R41.

[0039] Furthermore, such as Figure 4 As shown, in some embodiments of this utility model, the microphone module 300 includes an ear-hook wireless microphone receiving unit (hereinafter referred to as wireless microphone 1), a handheld wireless microphone receiving unit (hereinafter referred to as wireless microphone 2), and a microphone signal amplification unit. The ear-hook wireless microphone receiving unit and the handheld wireless microphone receiving unit are used to receive microphone signals, and the microphone signal amplification unit is used to amplify the microphone signals. The microphone signal amplification unit includes a chip U4, which has dual operational amplifiers. The signal from wireless microphone 1 is connected to JP5-1, and the signal from wireless microphone 2 is connected to JP8-1, respectively, and amplifies the microphone signals. The output signal of one operational amplifier is sent to chip U2 of the mixing module 400 through capacitor C27, resistor R30, and resistor R32, and the output signal of the other operational amplifier is sent to chip U2 of the mixing module 400 through capacitor C32, resistor R36, and resistor R42.

[0040] Furthermore, such as Figure 4As shown, in some embodiments of this utility model, the mixing module 400 includes a chip U2, which has dual operational amplifiers, one for the left channel and the other for the right channel. Chip U2 is an inverting adder, adding and inverting the signals from each channel. One output signal is sent to the left and right channel inputs of the analog power amplifier module 500 (chip U7) via capacitor C6, resistor R6, capacitor C9, and resistor R10. The other output signal is sent to the digital power amplifier module 600 (chip U6) via capacitor C43, resistor R52, capacitor C45, and resistor R54.

[0041] Furthermore, such as Figure 5 As shown, in some embodiments of this utility model, the digital power amplifier module 600 includes a chip U6 (using a model such as TPA3118), which is configured as a mono power amplifier. The left and right channel signals from the mixing module 400 are respectively connected to RINP and RINN. Pins 21 and 23 of the chip U6 are shorted, and pins 27 and 29 are shorted to connect to a filtering module (low-pass filter). The low-pass filter filters the output signal of the digital power amplifier module 600, removing high-order harmonics, and then outputs a mono signal to pins 2 and 7 of the relay JK1.

[0042] Furthermore, such as Figure 4 As shown, in some embodiments of this utility model, the analog power amplifier module 500 includes a chip U7. A 24V voltage enters from pin 8 to provide power to the analog power amplifier module 500. The left and right channel audio drive signals enter from pins 9 and 1, respectively. After amplification, the left channel is output from pin 6 and connected to pin 1 of relay JK1. The right channel is connected to the speaker from pin 4 through pin 1 of JP4.

[0043] Furthermore, such as Figure 4 As shown, in some embodiments of this utility model, the loudspeaker includes a first loudspeaker (SPEAK1) and a second loudspeaker (SPEAK2); the power amplifier switching module 700 includes a first relay JK1B and a second relay JK1C. The normally closed contact (pin 2) of the first relay JK1B is electrically connected to the first output terminal (DAMP) of the digital power amplifier module 600, the normally open contact (pin 1) of the first relay JK1B is electrically connected to the first output terminal of the analog power amplifier module 500, and the common contact (pin 3) of the first relay JK1B is connected to the first loudspeaker's... The first terminal (pin 1) is electrically connected; the normally closed contact (pin 7) of the second relay JK1C is electrically connected to the second output terminal (DAMPN) of the digital power amplifier module 600; the normally open contact (pin 8) of the second relay JK1C is grounded through capacitor E2; the common contact (pin 6) of the second relay JK1C is electrically connected to the second terminal (pin 2) of the first speaker; the first terminal (pin 1) of the second speaker is electrically connected to the second output terminal of the analog power amplifier module 500; and the second terminal (pin 2) of the second speaker is electrically connected to the common contact (pin 6) of the second relay JK1C.

[0044] Furthermore, such as Figure 4 As shown, in some embodiments of this utility model, the multi-functional speaker further includes an audio output amplification module, which is used to amplify the audio output signal of the multi-functional speaker. Specifically, the audio output amplification module includes a chip U3, which includes dual operational amplifiers, corresponding to the left and right channels of the output signal respectively. After amplification, the output signal of the multi-functional speaker can be output to external devices (such as power amplifiers, recording devices, etc.).

[0045] like Figure 2 As shown, in some embodiments of this utility model, the switching power supply module 900 outputs four voltages: 24V to power the analog power amplifier module, and 4.2V, 5V, and 12V (actually 12.7V) to power the Bluetooth module 100, audio input module 200, microphone module 300, and mixing module 400, respectively. The 24V output of the switching power supply module 900 also powers the battery management module 1000. The switching power supply module has a 220V AC input and is on a separate PCB. The Bluetooth signal receiving unit is on a separate circuit board, receiving 5V power from the main board, and sends the dual-channel audio signal back to the Bluetooth signal amplification unit for amplification via JP2. The wireless microphone 1 is soldered to the main board via JP5. Pins 1 and 2 of JP5 provide 4.2V power to the module, and pins 3 and 4 send the microphone signal to U4 for amplification. The wireless microphone 2 is connected to the main board via JP8. The main board's 12V power supply powers the wireless microphone 2 via pins 1 and 2 of JP8, and pins 3 and 4 send the audio signal to U4 for amplification. The battery management module 1000 is integrated onto the motherboard, such as... Figure 3 As shown, the battery management module 1000 connects to the lithium battery via JP9 and pins 1 and 2 of the double-pole double-throw switch S1. It automatically charges when the lithium battery voltage drops below 11.7V. The lithium battery is connected to the motherboard's 12V supply via diode D3. When the switching power supply module 900 outputs 12V, the voltages at the positive and negative terminals of diode D3 are equal, and D3 is cut off, so the lithium battery does not supply power. When the switching power supply module 900 does not output 12V, D3 conducts, and the lithium battery supplies power. It should be noted that the switching power supply module 900 also includes a DC boost converter chip and its peripheral components to boost the voltage to the required level.

[0046] like Figure 2As shown, when using AC power, closing the power switch S1-1 connects the 220V AC power supply to the switching power supply module 900. The AC / DC converter starts working, outputting a 24V main voltage and a 12V voltage. The DC / DC converter also starts working, outputting 4.2V and 5V voltages to power the analog amplifier module 500, microphone module 300, Bluetooth module 100, audio input module 200, and mixing module 400. Simultaneously, the lithium battery is connected to the battery management module 1000. When the lithium battery voltage drops below 11.7V, it charges. Because the 24V main power supply is sufficient, the speaker can operate normally and charge simultaneously. Simultaneously, relay JK1 engages, energizing pins 1, 3, 6, and 8. The left channel of the analog power amplifier module 600 operates via U7(6)—JK1(1)—JK1(3)—JP1(1)—SPEAK1(up)—SPEAK1(down)—JP1(2)—JK1(6)—JK1(8)—E2(+)—E2(-)—GND, activating SPEAK1. The right channel operates via U7(4)—JP4(1)—SPEAK2(up)—SPEAK2(down)—JP4(2)—JK1(6)—JK1(8)—E2(+)—E2(-)—GND, activating SPEAK2. At this point, it is stereo, and the digital power amplifier module 600 is not working because the speaker is disconnected. When using battery power, switch S1-1 is turned off. Since the AC plug is unplugged, no AC power enters the switching power supply, the AC / DC does not work, there is no 24V output, the analog power amplifier module 500 does not work, relay JK1 is released, the switching power supply module 900 has no 12V voltage output, D3 is turned on, and the lithium battery supplies power to the digital power amplifier module 600, microphone module 300, Bluetooth module 100, audio input module 200, and mixing module 400. Since there is no 24V voltage on the main board, relay JK1 is released, and the digital power amplifier module 600 mono output terminal DAMP—JK1(2)—JK1(3)—JP1(1)—SPEAK1(up)—SPEAK1(down)—JP1(2)—JK1(6)—JK1(7)—digital power amplifier output terminal DAMN. At this time, it is a mono digital power amplifier.

[0047] Therefore, the multi-functional speaker according to this embodiment can be used at home with AC power. A pair of speakers can be connected to a mobile phone via Bluetooth to play music, or the microphone provided with the speaker can be used for karaoke, or the audio from a TV set-top box can be connected for playback. When going out, only the main speaker needs to be carried; it is powered by a lithium battery and automatically switches to a digital amplifier module, with an output power equivalent to analog dual-channel. The functions and usage are the same as when using AC power at home. This invention not only achieves multiple uses in one speaker but also leverages the strengths of each component, offering high cost-effectiveness and a promising market prospect.

[0048] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A multi-functional speaker, characterized in that, include: A Bluetooth module is used to receive Bluetooth signals and amplify the Bluetooth signals; An audio input module is used to acquire an audio input signal and amplify the audio input signal; A microphone module is used to receive microphone signals and amplify the microphone signals; The mixing module has its input terminals electrically connected to the output terminals of the Bluetooth module, the audio input module, and the microphone module, respectively, and is used to mix at least one of the amplified Bluetooth signal, the audio input signal, and the microphone signal to obtain a mixed signal; The analog power amplifier module has its input terminal electrically connected to the output terminal of the hybrid module; The digital power amplifier module has its input terminal electrically connected to the output terminal of the hybrid module; The power amplifier switching module has its input terminal electrically connected to the output terminals of the digital power amplifier module and the analog power amplifier module, respectively, and its output terminal electrically connected to the speaker. The power amplifier switching module is used to switch the connection status between the analog power amplifier module and the digital power amplifier module and the speaker. A switching power supply module is used to provide corresponding operating voltages for the Bluetooth module, the audio input module, the microphone module, the mixing module, the analog power amplifier module, and the power amplifier switching module; The battery management module is electrically connected to the switching power supply module and the digital power amplifier module. The switching power supply module provides the corresponding operating voltage to the battery management module. The battery management module manages the charging and discharging of the battery, increases the battery voltage to power the digital power amplifier module, and provides the corresponding operating voltage to the Bluetooth module, the audio input module, the microphone module, and the mixing module through the battery.

2. The multifunctional speaker according to claim 1, characterized in that, The multi-functional speaker also includes an audio output amplification module, which is used to amplify the audio output signal of the multi-functional speaker.

3. The multifunctional speaker according to claim 1, characterized in that, The Bluetooth module includes a Bluetooth signal receiving unit and a Bluetooth signal amplification unit. The output terminal of the Bluetooth signal receiving unit is electrically connected to the input terminal of the Bluetooth signal amplification unit, and the output terminal of the Bluetooth signal amplification unit is electrically connected to the input terminal of the hybrid module. The Bluetooth signal receiving unit is used to receive Bluetooth signals, and the Bluetooth signal amplification unit is used to amplify the Bluetooth signals.

4. The multifunctional speaker according to claim 1, characterized in that, The microphone module includes an ear-hook wireless microphone receiver unit, a handheld wireless microphone receiver unit, and a microphone signal amplification unit. The ear-hook wireless microphone receiver unit and the handheld wireless microphone receiver unit are used to receive microphone signals, and the microphone signal amplification unit is used to amplify the microphone signals.

5. The multifunctional speaker according to claim 1, characterized in that, The loudspeaker includes a first loudspeaker and a second loudspeaker; the power amplifier switching module includes a first relay and a second relay, wherein the normally closed contact of the first relay is electrically connected to the first output terminal of the digital power amplifier module, the normally open contact of the first relay is electrically connected to the first output terminal of the analog power amplifier module, and the common contact of the first relay is electrically connected to the first terminal of the first loudspeaker; the normally closed contact of the second relay is electrically connected to the second output terminal of the digital power amplifier module, the normally open contact of the second relay is grounded through a capacitor, the common contact of the second relay is electrically connected to the second terminal of the first loudspeaker, the first terminal of the second loudspeaker is electrically connected to the second output terminal of the analog power amplifier module, and the second terminal of the second loudspeaker is electrically connected to the common contact of the second relay.

6. The multifunctional speaker according to claim 1, characterized in that, A filtering module is provided between the output terminal of the digital power amplifier module and the input terminal of the power amplifier switching module. The filtering module is used to filter the output signal of the digital power amplifier module.

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