CN111601214A

CN111601214A - Intelligent sound box and playing and transmitting method thereof

Info

Publication number: CN111601214A
Application number: CN201910130149.4A
Authority: CN
Inventors: 石殷
Original assignee: Shenzhen Lan Digital Technology Co ltd
Current assignee: Shenzhen Lan Digital Technology Co ltd
Priority date: 2019-02-21
Filing date: 2019-02-21
Publication date: 2020-08-28

Abstract

The invention discloses an intelligent sound box and a playing and transmitting method thereof, comprising a sound box body, a control panel, a wireless earphone and an external microphone, wherein the sound box body is provided with a loudspeaker, a display screen, a function key module, a TF card slot and a USB interface which are electrically connected with the control panel, the wireless earphone is provided with a plurality of sound source signals used for receiving FM transmitting modules, the external microphone is electrically connected with the control panel, the intelligent sound box has the function of converting various sound sources into different sound sources, when the sound box receives different sound sources, the music can be played directly through the power amplification part of the loudspeaker, meanwhile, various sound sources can be converted into transmitting signals through the FM transmitting module for transmitting, so that a user can receive the signals by adopting a matched wireless earphone and directly convert and answer the signals by using the earphone, therefore, the multiple pairs of earphones can synchronously receive the same signal sound source and play music simultaneously.

Description

Intelligent sound box and playing and transmitting method thereof

Technical Field

The invention belongs to the technical field of sound box equipment, and particularly relates to an intelligent sound box and a playing and transmitting method thereof.

Background

The sound box is a wide product used by the public for music, and music played through the sound box in modes of mobile phone Bluetooth wireless playing, TF card or U disk and the like is indispensable in life of people.

In the prior art, when a loudspeaker box is adopted in a public place to play large volume, great interference can be generated to people around, and the earphone is adopted to only meet the requirement of listening to people alone, so that the loudspeaker box is inconvenient for use by multiple people. For example, in a square dance activity, the whole population must listen to the same song without disturbing others.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide an intelligent sound box and a playing and transmitting method thereof.

The invention provides an intelligent sound box which comprises a sound box body, a control panel, a wireless earphone and an external microphone, wherein the sound box body is provided with a loudspeaker, a display screen, a function key module, a TF card slot and a USB interface which are electrically connected with the control panel, the control panel is arranged in the sound box body, the control panel comprises a main control module, a Bluetooth receiving module, an FM transmitting module, a voltage management module, a charging module, a loudspeaker module, an electronic volume module, an audio output module, an external sound source input module, an internal microphone module and an earphone interface module, the wireless earphone is provided with a plurality of signals for receiving sound sources transmitted by the FM transmitting module, and the external microphone is electrically connected with the control panel.

In the above solution, the main control module includes a fourteenth chip U14, a first crystal oscillator circuit, a first crystal oscillator tube X1, an eighth capacitor C8, a twenty-fifth capacitor C25, a one-hundred twenty-nine capacitor C129, a one-hundred thirty-six capacitor C136, a one-hundred thirty-eight capacitor C138, a one-hundred thirty-nine capacitor C139, a one-hundred forty-three capacitor C143, and a one-hundred forty-four capacitor C144;

the 2 nd end of the fourteenth chip U14 is connected to one end of an eighth capacitor C8, one of the 3 rd end is connected to one end of a twenty-ninth capacitor C129, the other is connected to one end of a twenty-fifth capacitor C25, the 4 th end is connected to one end of a thirty-sixth capacitor C136, the 1 st end and the other end of the eighth capacitor C8, the other end of the twenty-ninth capacitor C129, the other end of the twenty-fifth capacitor C25 and the other end of the thirty-sixth capacitor C136 are grounded together, the 2 nd, 5 th, 6 th and 45 th ends are connected to a voltage management module, the 7 th, 25 th, 26 th, 33 th and 34 ends are connected to a loudspeaker module, a first crystal oscillator X1 is connected between the 8 th and 9 th ends in parallel, the 8 th end and the 9 th end are grounded together after passing through a forty-third capacitor C143 and a forty-fourteenth capacitor C144, the 10 th and 11 th ends are connected to a Bluetooth receiving module 202, the 12 th end is grounded, the 13 th and 14 th end is connected to, 17. 18, 19, 20, 21 and 22 are connected with a display screen, 23 th and 24 th USB interfaces, 27 th, 42 th and 43 th function key modules, 28 th and 29 th external sound source input modules, 30 th and 31 th FM transmitting modules, 32 th end is connected with a built-in microphone module, 35 th end is grounded after passing through a one hundred thirty eight capacitor C138 and 36 th end after passing through a one hundred thirty nine capacitor C139, 37 th, 38 th, 39 and 40 th end is connected with an FM receiving module, 41 th end is connected with an earphone interface module, 46 th, 47 th and 48 th end is connected with a TF card slot;

the first crystal oscillator circuit comprises a first crystal oscillator Y1, a first hundred thirty-one capacitor C131 and a first hundred thirty-two capacitor C132, wherein one path of the 1 st end of the first crystal oscillator Y1 is connected to the 14 th end of a fourteenth chip U14, the other path of the first crystal oscillator Y1 is grounded with one path of the 2 nd end after passing through the first hundred thirty-two capacitor C132, the other path of the 2 nd end and the 4 th end are connected together to one path of the first crystal oscillator Y131, one path of the other end of the first hundred thirty-one capacitor C131 is connected to the 3 rd end of the first crystal oscillator Y1, and the other path of the first crystal oscillator Y35131 is connected to the 13 th end of the fourteenth chip U14.

In the above scheme, the bluetooth receiving module includes a bluetooth antenna BT, a one hundred thirty capacitor C130, a one hundred thirty-seven capacitor C137, an eighth inductor L8, and a ninth inductor L9, where a 1 st end of the bluetooth antenna BT is grounded, a 2 nd end of the bluetooth antenna BT is connected to an 11 th end of a fourteenth chip U14 through the one hundred thirty capacitor C130 and the ninth inductor L9 in sequence, one end of the eighth inductor L8 is connected between the one hundred thirty capacitor C130 and the ninth inductor L9, the other end of the eighth inductor L8 is grounded, one end of the one hundred thirty-seven capacitor C137 is connected to a 10 th end of the fourteenth chip U14, and the other end of the eighth inductor L35137 is grounded.

In the above solution, the FM receiving module includes an FM receiving antenna, a thirty-sixth capacitor C36, a forty-sixth capacitor C40, a one hundred thirty-third capacitor C133, a one hundred thirty-fourth capacitor C134, and an eleventh inductor L11, the FM receiving antenna is connected to one end of the thirty-sixth capacitor C36, a first path of another end of the thirty-sixth capacitor C36 is connected to a 39 th end of a fourteenth chip U14, a second path is connected to one end of a forty-fourth capacitor C40, a third path is connected to one end of an eleventh inductor L11, another end of the forty-fourth capacitor C40 and another end of the eleventh inductor L11 are grounded in common, one end of the thirty-third capacitor C133 is connected to a 40 th end of the fourteenth chip U14, a first path of another end is connected to a 38 th end of the fourteenth chip U14, a second path is connected to a second ground, a third path is connected to one end of a thirty-fourth capacitor C134, a path of another end of the one hundred-fourth capacitor C134 is connected to a third, the other path is grounded.

In the above scheme, the FM transmission module includes an eighth chip U8, an FM transmission antenna circuit, a second oscillator circuit, a ninety-fourth resistor R94, a ninety-fifth resistor R95, a ninety-sixth resistor R96, a first hundred resistor R100, a first hundred-zero resistor R101, a fifty-eighth capacitor C58, a fifty-ninth capacitor C59, and a sixty-third capacitor C63; the 1 st and 2 nd ends of the eighth chip U8 are connected with the second crystal oscillator circuit, one combined path of the 3 rd end and the 8 th end is connected with the voltage processing module through a ninety-fifth resistor R95, a fifty-eighth capacitor C58 is connected between the other path and one path of the 4 th end in parallel, the other path of the 4 th end is grounded, the 5 th end is connected with the FM transmitting antenna circuit, the 6 th end is connected with the 31 st end of the fourteenth chip U14 through a one-hundred resistor R100, the 7 th end is connected with the 30 th end of the fourteenth chip U14 through a one-hundred-zero resistor R101, the 9 th end is connected with the electronic volume module after sequentially passing through a fifty-ninth capacitor C59 and a ninety-sixth resistor R96 and sequentially passing through a sixty-third capacitor C63 and a ninety-fourth resistor R94 with the 10 th end;

the second oscillator circuit comprises a second oscillator Y2, a seventh twelve capacitor C72 and a seventh fourteen capacitor C74, wherein one path of the 1 st end of the second oscillator Y2 is connected to the 1 st end of an eighth chip U8, the other path of the 1 st end of the second oscillator Y2 is grounded with one path of the 2 nd end after passing through the seventh fourteen capacitor C74, the other path of the 2 nd end and the 4 th end are combined into one path which is connected to one end of the seventh twelve capacitor C72, one path of the other end of the seventh twelve capacitor C72 is connected to the 3 rd end of the second oscillator Y2, and the other path of the other end of the seventh capacitor C72 is connected to the 2 nd end of an eighth chip U8;

the FM transmitting antenna circuit comprises an FM transmitting antenna, a ninth triode Q9, a ninety-seventh resistor R97, a ninety-eighth resistor R98, a ninety-ninth resistor R99, a fifty-sixth capacitor C56, a fifty-seventh capacitor C57, a seventy-fifth capacitor C75, a seventy-ninth capacitor C79, an eighty capacitor C80, an eighty-second capacitor C82, an eighty-seventh capacitor C87, a second inductor L2 and a thirteenth inductor L13; one path of the 1 st end of the ninth triode Q9 and a path between the first path of the 3 rd end are connected to a ninety-seventh resistor R97, the other path of the 1 st end is connected to the 5 th end of an eighth chip U8 through a ninety-eighth resistor R98 and a seventy-fifth capacitor C75 in sequence, the other path of the 1 st end is further grounded through a ninety-eighth resistor R98 and a seventy-fifth capacitor C75 respectively through a fifty-seventh capacitor C57 and a thirteenth inductor L13, the 2 nd end is grounded, the second path of the 3 rd end is connected to a voltage re-processing module through a second inductor L2 and a ninety-ninth resistor R99 in sequence, the third path is grounded through an eighty capacitor C80, an eighty-second capacitor C82 and an eighty-seventh capacitor C87 respectively after passing through a seventy-ninth capacitor C79, and the fourth path is connected to an FM transmitting antenna through a fifty-sixth capacitor C56.

In the above scheme, the voltage management module includes a power switch chip circuit, a lithium battery circuit, a first switch circuit, and a second switch circuit.

In the above scheme, the speaker module includes a speaker output module and a power amplifier module, and the speaker output module includes a first output circuit and a second output circuit.

The embodiment of the invention also provides a playing and transmitting method of the intelligent sound box, which comprises the following steps: the control panel receives the audio signal and converts the audio signal into a sound source signal; the control panel controls the loudspeaker module to directly play the audio signal according to the preselected playing mode and/or transmits the audio signal to at least one external wireless earphone through the FM transmitting module and converts and plays the audio signal through the wireless earphone.

In the above scheme, the control board receives audio signals, specifically, the control board receives audio signals through a bluetooth receiving module, an FM receiving module, a TF card slot, a USB interface, or an external sound source input module.

Compared with the prior art, the invention provides an intelligent sound box and a playing and transmitting method thereof, wherein the intelligent sound box is provided with a plurality of receiving modules, has a function of converting a plurality of sound sources into different sound sources, can directly play music through a power amplification part of a loudspeaker when the sound box receives different sound sources, and can convert various sound sources into transmitting signals through an FM transmitting module for transmitting, so that a user can receive the signals by adopting a matched wireless earphone and directly convert and answer the signals by using the earphone, thereby realizing that a plurality of pairs of earphones synchronously receive the same signal sound source and simultaneously play the music. The invention thoroughly solves the problem that the square dance activities affect other people, all people can listen to music to dance by wearing the special movable earphone and the sound box, and the sound box can be switched on at low volume or no volume, thereby achieving the purpose of singing and dancing without interfering other people.

Drawings

Fig. 1 is a schematic structural diagram of an intelligent sound box provided in embodiment 1 of the present invention;

fig. 2 is a connection block diagram of an intelligent sound box according to embodiment 1 of the present invention;

fig. 3 is a circuit diagram of a main control module in an intelligent sound box according to embodiment 1 of the present invention;

fig. 4 is a circuit diagram of an FM transmission module in an intelligent sound box according to embodiment 1 of the present invention;

fig. 5 is a circuit diagram of a voltage management module in an intelligent sound box according to embodiment 1 of the present invention;

fig. 6 is a circuit diagram of a charging module in an intelligent sound box according to embodiment 1 of the present invention;

fig. 7 is a circuit diagram of a speaker module in an intelligent sound box according to embodiment 1 of the present invention;

fig. 8 is a circuit diagram of an electronic volume module in an intelligent sound box according to embodiment 1 of the present invention;

fig. 9 is a circuit diagram of an audio output module in an intelligent sound box according to embodiment 1 of the present invention;

fig. 10 is a circuit diagram of an external sound source input module in an intelligent sound box according to embodiment 1 of the present invention;

fig. 11 is a circuit diagram of a built-in microphone module in a smart sound box according to embodiment 1 of the present invention;

fig. 12 is a circuit diagram of an earphone interface module in an intelligent sound box according to embodiment 1 of the present invention;

fig. 13 is a circuit diagram of a function key module in an intelligent sound box according to embodiment 1 of the present invention;

fig. 14 is a circuit diagram of a TF card slot in an intelligent speaker according to embodiment 1 of the present invention;

fig. 15 is a circuit diagram of a USB interface in an intelligent speaker according to embodiment 1 of the present invention;

fig. 16 is a circuit diagram of an external microphone in an intelligent speaker according to embodiment 1 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

An embodiment 1 of the present invention provides an intelligent sound box, as shown in fig. 1 and 2, including a sound box body 1, a control board 2, a wireless headset and an external microphone, where the sound box body 1 is provided with a speaker 3, a display screen 4, a function key module 5, a TF card slot 6, and a USB interface 7, the control board 2 is disposed in the sound box body 1, the control board 2 includes a main control module 201, a bluetooth receiving module 202, an FM receiving module 203, an FM transmitting module 204, a voltage management module 205, a charging module 206, a speaker module 207, an electronic volume module 208, an audio output module 209, an external sound source input module 210, an internal microphone module 211, and an earphone interface module 212, the wireless headset is provided with a plurality of sound source signals for receiving the FM transmitting module 204, and the external microphone is electrically connected to the control board 2.

The wireless earphone is a special movable earphone, is matched with the sound box body 1 and can receive sound source signals emitted by the sound box body 1.

The invention is provided with a plurality of receiving modules, can receive a plurality of sound sources and carry out the switching-in function of the plurality of sound sources.

The function key module specifically comprises a power switch, a song selection key, a transmitting switch, an EQ adjusting piece, a volume control key and the like.

The transmitting switch is connected with the FM transmitting module and used for controlling the opening and closing of the FM transmitting module.

This intelligence audio amplifier is equipped with multiple receiving module, has multiple sound source and changes over into the function, can directly play the music through the power amplifier enlargements portion of speaker when the audio amplifier receives different sound sources, simultaneously, can also trun into the transmission signal transmission with various sound sources through FM emission module, make the user can adopt supporting wireless earphone to receive this signal, and directly answer with the earphone conversion, thereby realize many to the same signal sound source of earphone synchronous reception, many to the earphone music of broadcast simultaneously.

Referring to fig. 3, the main control module 201 includes a fourteenth chip U14, a first crystal oscillator circuit 213, and a first crystal oscillator tube X1; the 2 nd end of a fourteenth chip U14 is connected to one end of an eighth capacitor C8, one of the 3 rd end is connected to one end of a twenty-one-hundred-twenty-nine capacitor C129, the other end is connected to one end of a twenty-five capacitor C25, the 4 th end is connected to one end of a thirty-one-hundred-six capacitor C136, the 1 st end and the other end of the eighth capacitor C8, the other end of the twenty-nine-one-hundred-nine capacitor C129, the other end of the twenty-five capacitor C25 and the other end of the thirty-one-hundred-six capacitor C136 are grounded together, the 2 nd, 5 th, 6 th and 45 th ends are connected to a voltage management module 205, the 7 th, 25 th, 26 th, 33 th and 34 th ends are connected to a loudspeaker module 207, a first crystal oscillator tube X1 is connected in parallel between the 8 th and 9 th ends, the 8 th end is grounded together with the 9 th end through a forty-three capacitor C143, the 10 th and 11 th end is grounded through a forty-fourteen capacitor C144, 16. 17, 18, 19, 20, 21, 22 are connected with the

display screen

4, 23, 24 ends are connected with the

USB interface

7, 27, 42, 43 ends are connected with the

function key module

5, 28, 29 ends are connected with the external sound

source input module

210, 30, 31 ends are connected with the

FM transmitting module

204, 32 ends are connected with the built-in

microphone module

211, 35 ends are connected with 36 ends through a one hundred thirty nine capacitor C139 after passing through a one hundred thirty eight capacitor C138 and are grounded together, 37, 38, 39, 40 ends are connected with the FM receiving module 203, 41 ends are connected with the

earphone interface module

212, 46, 47, 48 ends are connected with the TF card slot 6;

the first crystal oscillator circuit 213 includes a first crystal oscillator Y1, one of the 1 st ends of the first crystal oscillator Y1 is connected to the 14 th end of the fourteenth chip U14, the other is connected to the common ground with one of the 2 nd ends after passing through the one hundred thirty two capacitors C132, the other of the 2 nd ends and the 4 th end are connected to one end of the one hundred thirty one capacitors C131, one of the other ends of the one hundred thirty one capacitors C131 is connected to the 3 rd end of the first crystal oscillator Y1, and the other is connected to the 13 th end of the fourteenth chip U14.

The bluetooth receiving module 202 includes a bluetooth antenna BT, a 1 st end of the bluetooth antenna BT is grounded, a 2 nd end of the bluetooth antenna BT is connected to an 11 th end of the fourteenth chip U14 through a one hundred thirty capacitor C130 and a ninth inductor L9 in sequence, one end of an eighth inductor L8 is connected between the one hundred thirty capacitor C130 and the ninth inductor L9, the other end of the eighth inductor L8 is grounded, one end of a one hundred thirty seven capacitor C137 is connected to a 10 th end of the fourteenth chip U14, and the other end of the eighth inductor L8 is grounded.

The FM receiving module 203 includes an FM receiving antenna, the FM receiving antenna is connected to one end of a thirty-sixth capacitor C36, a first path of another end of the thirty-sixth capacitor C36 is connected to a 39 th end of a fourteenth chip U14, a second path is connected to one end of a forty-fourth capacitor C40, a third path is connected to one end of an eleventh inductor L11, another end of the forty-fourth capacitor C40 and another end of the eleventh inductor L11 are commonly grounded, one end of a one-hundred thirty-third capacitor C133 is connected to a 40 th end of the fourteenth chip U14, a first path of another end is connected to a 38 th end of the fourteenth chip U14, a second path is connected to one end of a one-hundred thirty-fourth capacitor C134, and a path of another end of the one-hundred thirty-fourth capacitor C134 is connected to a 37 th end of the fourteenth chip U14, and another path.

Referring to fig. 4, the circuit of the FM transmission module 204 is that the 1 st and 2 nd terminals of the eighth chip U8 are connected to the second oscillator circuit 215, one combined path of the 3 rd terminal and the 8 th terminal is connected to the input power via a ninety-fifth resistor R95, a fifty-eighth capacitor C58 is connected in parallel between the other path and one path of the 4 th terminal, the other path of the 4 th terminal is grounded, the 5 th terminal is connected to the FM transmission antenna circuit 214, the 6 th terminal is connected to the 31 th terminal of the fourteenth chip U14 via a one hundred-fifth resistor R100, the 7 th terminal is connected to the 30 th terminal of the fourteenth chip U14 via a one hundred-zero resistor R101, the 9 th terminal is sequentially connected to the electronic volume module 208 via a fifty-ninth capacitor C59 and a ninety-sixth resistor R96, and the 10 th terminal is sequentially connected to the sixty-third capacitor C63 and a ninety-fourth resistor R94;

the second oscillator circuit 215 comprises a second oscillator Y2, a seventy-second capacitor C72 and a seventy-fourth capacitor C74, wherein one path of the 1 st end of the second oscillator Y2 is connected to the 1 st end of the eighth chip U8, the other path of the 1 st end of the second oscillator Y2 is grounded with one path of the 2 nd end after passing through the seventy-fourth capacitor C74, the other path of the 2 nd end and the 4 th end are combined into one path which is connected to one end of the seventy-second capacitor C72, one path of the other end of the seventy-second capacitor C72 is connected to the 3 rd end of the second oscillator Y2, and the other path of the other path is connected to the 2 nd end of the eighth chip U8;

the FM transmitting antenna circuit 214 is that a ninety-seventh resistor R97 is connected between one of the 1 st ends of the ninth triode Q9 and the first of the 3 rd ends, the other of the 1 st ends is sequentially connected to the 5 th end of the eighth chip U8 through a ninety-eighth resistor R98 and a seventy-fifth capacitor C75, sequentially passes through a ninety-eighth resistor R98 and a seventy-fifth capacitor C75, respectively passes through a fifty-seventh capacitor C57 and a thirteenth inductor L13, and is grounded at the 2 nd end, the second of the 3 rd ends is sequentially connected to an input power source through a second inductor L2 and a ninety-ninth resistor R99, the third passes through a seventy-ninth capacitor C79, respectively passes through an eighty capacitor C80, an eighty-second capacitor C82 and an eighty-seventh capacitor C87, and the fourth end is connected to the FM transmitting antenna through a sixth capacitor C56.

Referring to fig. 5, the voltage management module 205 includes a power switch chip circuit 216, a lithium battery circuit 217, a first switch circuit 218, and a second switch circuit 219;

the power switch chip circuit 216 is that a first hundred-and-zero-fifth capacitor C105 is connected between one of the 1 st end and the 6 th end of the power switch chip, one of the 3 rd end is grounded with the 2 nd end after passing through a first hundred fifty-eight resistor R158, the other is connected with one end of a first hundred fifty-seven resistor R157, the 4 th end is connected with one end of a first hundred-and-fifty-nine resistor R159, one of the 5 th end is connected with the other end of the first hundred-and-fifty-nine resistor R159, the other is connected with the lithium battery circuit 217, the other of the 6 th end is connected with one end of a sixth inductor L6, one of the other end of the first hundred-and-fifty-seven resistor R157 and the other end of the sixth inductor L6 are combined into one to output a direct current voltage, the other is connected with one end of a thirty-seventh capacitor C37, one end of a twenty-second capacitor C22 is connected with the other end of the sixth inductor L36;

the lithium battery circuit 217 is that a lithium battery is connected with a fourth interface J4, one path of one end of the fourth interface J4 is connected with the S end of a fourth triode Q4, the other path of the one end of the fourth interface J4 is connected with one end of a fifty-ninth resistor R59, the other end of the one end of the fifty-ninth resistor R59 is grounded, the other path of the one end of the other end of the fifty-ninth resistor R59 is connected with the G end of a fourth triode Q4 and then divided into two paths, one path of the one path is connected with a first switch circuit 218, the other path is connected with a second switch circuit 219, the D end of the fourth triode Q4 is connected with one end of a twelfth capacitor C12, the other end of the twelfth capacitor C12 and one end of a thirty-fourth capacitor C34 are grounded, one path of the other end of the thirty-fourth capacitor C34 is connected with a power switch chip circuit 216, the other path is grounded through a twenty-second resistor R22 and an eighty-fifth resistor R85 in sequence, one path is connected between a twenty-second resistor, the other end is grounded;

the first switch circuit 218 is that one path of the 1 st end of the seventh rectifying diode D7 is connected to the 6 th end of the fourteenth chip U14, the other path outputs 3V voltage through the third resistor R3, the 2 nd end is connected to the lithium battery circuit 217 through the fifth resistor R5, and the 3 rd end is grounded through the power switch;

the second switch circuit 219 is a first triode Q1, wherein one of the 1 st terminals is connected to the 5 th terminal of the fourteenth chip U14 through a ninety-th resistor R90, the other one of the 1 st terminals is connected to the 2 nd terminal through a seventy-seventh resistor R77, a second key switch K2 is connected between the 1 st terminal and the 2 nd terminal, and the 3 rd terminal is connected to the lithium battery circuit 217 through a seventy-sixth resistor R76.

Referring to fig. 6, the charging module 206 is specifically that one path of the 1 st end of the first chip U1 passes through a fourteenth resistor R14 and then sequentially connects to a first inductor L1 and a first converter DC1, the other path of the first chip U1 passes through a thirty-third capacitor C33 and then is grounded, one path of the 2 nd end sequentially connects to a first inductor L1 and a first converter DC1, the other path of the first chip U is grounded, one path of the 3 rd end sequentially passes through a tenth inductor L10 and a fourth capacitor C4 and is grounded, the other path of the first chip U sequentially passes through a hundred fifty-first resistor R151 and a hundred twenty-sixth capacitor C126 and is grounded, one path of the 4 th end connects to one end of a twenty-fourth capacitor C24 and the other path connects to one end of a twenty-third capacitor C23, the other end of the twenty-fourth capacitor C24 and the other end of the twenty-third capacitor C23 are commonly grounded, one path of the 5 th end outputs a battery voltage, the other path of the second chip U passes through a twenty-sixth capacitor C26 and is grounded, the 6 th end of, the other path is connected with a 5V power supply through a twentieth resistor R20, the other end of a nineteenth resistor R19 and the other end of a twenty-first resistor R21 are grounded in common, the 8 th end is sequentially connected with the 5V power supply through a thirteenth resistor R13 and a first light-emitting diode LED1, one path of the 1 st end of a first inductor L1 is connected with the 2 nd end of a first chip U1, the other path is grounded, the 2 nd end is connected with the 1 st end of the first chip U1, the 3 rd end and the 4 th end are connected with a first converter DC1, a first high-frequency resistor FB1 is connected between the 2 nd end and the 4 th end, and a second high-frequency resistor FB2 is connected between the 1 st end and the 3 rd end.

Referring to fig. 7, the speaker module 207 includes a speaker output module and a power amplifier module, the speaker output module includes a first output circuit and a second output circuit,

referring to fig. 7a, the first output circuit is specifically that the 1 st end of the fourth chip U4 is grounded, the 2 nd, 3 th, and 4 th ends are combined into one path and then connected to the power supply through the seventh inductor L7, the seventh inductor L7 is further grounded through the seventh capacitor C7, the 5 th end is grounded, the first path of the 6 th end is connected to the power supply, the second path is sequentially grounded through the thirty-fourth resistor R34 and the thirty-fifth resistor R35, the third path is grounded through the fourteenth capacitor C14, the fourth path is grounded through the tenth capacitor C10, the 8 th end is connected to one end of the eleventh capacitor C7, the 7 th end is grounded in common with the other end of the eleventh capacitor C11, the 9 th end is connected between the thirty-fourth resistor R34 and the thirty-fifth resistor R35, the 10 th end is connected to the thirty-sixth resistor R36 power supply, the 2 nd, 3 th, 4 th ends are combined into one path and then connected to the 6 th end in parallel in sequence and then connected to the fifth zener diode D5 and the third zener diode;

referring to fig. 7b, the second output circuit is specifically that one end of an eighty-sixth resistor R86 is connected to the 7 th end of the fourteenth chip U14, the other end is connected to the 1 st end of the seventh triode Q7, the 2 nd end of the seventh triode Q7 is grounded, the 3 rd end is connected to the 1 st end of the eighth triode Q8, the 2 nd end of the eighth triode Q8 is grounded, one end of the 3 rd end is connected to the eighth rectifying diode D8, the other end is connected to one end of the seventy-eighth resistor R78, the other end of the seventy-eighth resistor R78 is connected to the external microphone, one end of the eighy-resistor R80 is connected to the 3 rd end of the seventh triode Q7, and the other end is connected to the other end of the seventy-eighth resistor R78;

referring to fig. 7C, the power amplifier module is specifically configured that the 1 st and 2 nd ends of the ninth chip U9 are grounded in common, the 4 th end is connected to the 2 nd end of the first speaker CON1-a, the 5 th end is connected to the 1 st end of the first speaker CON1, a power supply is connected to the 7 th end, a battery voltage is input to the other end of the ninth chip U9 through a thirty-second resistor R32 and a thirty-seventh resistor R37 connected in parallel, the 8 th end is grounded, the 10 th end is grounded through a sixty-fifth capacitor C65 and the 11 th end is grounded through a twenty-sixth resistor R26 in common, the 12 th end is grounded through a sixty-sixth capacitor C66, the 14 th end is grounded through a second resistor R2, a fifteenth capacitor C15, a thirty-first resistor R31 and a first capacitor C1 in sequence and is connected to the 34 th end of the fourteenth chip U14 in sequence, the 14 th end is grounded through a second resistor R2 and a fifteenth capacitor C15 in sequence and an eighth resistor R208 and an external microphone module is connected to the thirty-fourth resistor R15 in sequence, A third capacitor C3, a twenty-fourth resistor R24 and a sixteenth capacitor C16 are connected to the 33 rd end of the fourteenth chip U14, the 15 th end sequentially passes through the fifteenth resistor R15 and the third capacitor C3, and then is grounded through a twenty-ninth resistor R29, the other circuit is respectively connected to the electronic volume module 208 and the external microphone, the 16 th end is connected to the 25 th end of the fourteenth chip U14 through a sixteenth resistor R16, the 17 th end sequentially passes through the second rectifier diode D2 and the ninth resistor R9 and is connected to the 26 th end of the fourteenth chip U14, the other circuit is grounded through the eighth resistor R8, the 22 th end is connected to the power supply, the other circuit is grounded through the fifth capacitor C5 and the sixth capacitor C6, the 24 th end is connected to the 4 th end of the first speaker CON1, the 25 th end is connected to the 3 rd end of the first speaker CON1, and the 27 th and 28 th ends are grounded; one end of a sixty-sixth resistor R66 is connected to the 7 th end of the ninth chip U9, the other end is connected to one end of a sixty-fifth capacitor C65, one end of a sixty-fourth capacitor C64 and one end of a ninth capacitor C9 which are connected in parallel are connected to the 7 th end of the ninth chip U9, and the other end is connected to the other end of a sixty-fifth capacitor C65.

Referring to fig. 8, the electronic volume module 208 is specifically configured that a 1 st end of a fifth chip U5 is sequentially connected to a D end of a second triode Q2 through an eighteenth resistor R18, an S end of the second triode Q2 is connected to a power supply, a G end is connected to a 3 rd end of a sixth triode Q6 through a sixteenth resistor R67, a 1 st end of the sixth triode Q6 is connected to a7 th end of a fourteenth chip through a sixteenth resistor R65, a 2 nd end is grounded, a 2 nd end and a 3 rd end of the fifth chip U5 are connected to a 6 th end through a twenty ninth capacitor C29, a 4 th end is connected to a thirty capacitor C30, a7 th end is connected to a thirty fifth capacitor C35, a 5 th end is connected to a 6 th end through a thirty eleventh capacitor C31, an 8 th end is connected to a thirty eighth capacitor C38, a 9 th end is connected to a thirty ninth capacitor C39, a 10 th end is connected to a forty seventh capacitor C47, a forty fourth end is connected to a forty fourth capacitor C638, a forty fourth end is connected to a forty fourth capacitor C6312, and a forty fourth end is connected to a forty fourth capacitor C6312 through an external capacitor C638, The 14 th end is grounded through a forty-third capacitor C43 in common, the 15 th end is grounded through a forty-fourth capacitor C44, the 16 th end is grounded through a forty-eighth capacitor C48 to an external microphone, the 17 th end is grounded through a twenty-seventh capacitor C27 to the 18 th end, the 19 th end is grounded through a forty-ninth capacitor C49 between a fifty-capacitor C50 and a forty-sixth resistor R46, the 20 th end is grounded through a fifty-capacitor C50 and a forty-sixth resistor R46 in sequence and the 22 th end is grounded through a fifty-second capacitor C52 and a forty-third resistor R43 in sequence, the 21 st end is grounded through a fifty-first capacitor C51 between a fifty-second capacitor C52 and a forty-third resistor R43, the 23 th end is grounded through a fourth capacitor C54 and a forty-second resistor R42 to an external microphone in sequence, the 24 th end is grounded through a fifty-fifth capacitor C6, a forty-third capacitor R40 and an external power amplifier module and a fourteenth resistor R73727 in sequence, and the sixteenth resistor U14, the 27 th end is connected with the 46 th end of the fourteenth chip U14 through a sixty-eight resistor R68, and the 28 th end is grounded through a second capacitor C2; one end of a first voltage stabilizing diode DZ1, a forty-fifth capacitor C45 and a forty-sixth capacitor C46 which are sequentially connected in parallel is connected to the 1 st end of a fifth chip U5, and the other end of the first voltage stabilizing diode DZ, the forty-fifth capacitor C45 and the forty-sixth capacitor C46 are grounded in common; one end of the sixty-first resistor R61 is connected to the voltage management module, the other end is connected to the G end of the second triode Q2, one end of the sixty-fourth resistor R64 is connected between the 1 st end of the sixth triode Q6 and the sixty-fifth resistor R65, and the other end is grounded with the 2 nd end of the sixth triode Q6.

Referring to fig. 9, the audio output module 209 is specifically configured that the 1 st end and the 4 th end of the third interface J3 are commonly grounded, one path of the 2 nd end is sequentially connected to the 34 th end of the fourteenth chip U14 through the first hundred-zero eighth resistor R108 and the first hundred-zero ninth capacitor C109, the other path is connected to one end of the eighty-first resistor R81, one path of the 3 rd end is sequentially connected to the 33 th end of the fourteenth chip U14 through the first hundred-zero seventh resistor R107 and the first hundred-zero eighth capacitor C108, the other path is connected to one end of the eighty-third resistor R83, and the other end of the eighty-first resistor R81 and the other end of the eighty-third resistor R83 are commonly grounded;

referring to fig. 10, the external sound source input module 210 is specifically configured that a 1 st end of the second interface J2 is grounded, a 2 nd end is sequentially connected to a 29 th end of the fourteenth chip U14 through an eighty-ninth resistor R89 and a seventy-sixth capacitor C76, one path of the 3 rd end is sequentially connected to a 28 th end of the fourteenth chip U14 through an eighty-seventh resistor R87 and a seventy-seventh capacitor C77, a 4 th end is connected to a one-hundred fifty-third resistor R153, one end of the first resistor R1 is connected between the eighty-ninth resistor R89 and the seventy-sixth capacitor C76, one end of the fourth resistor R4 is connected between the eighty-seventh resistor R87 and the seventy-seventh capacitor C77, and the other end of the first resistor R1 and the other end of the fourth resistor R4 are grounded together;

referring to fig. 11, the built-in microphone module 211 is specifically that the 1 st end of the built-in microphone MIC is connected to the 32 nd end of the fourteenth chip U14 through a sixty capacitor C60, the 1 st end is also grounded with the 2 nd end through a sixty-two capacitor C62, the 3 rd end is also sequentially connected to a sixty-two resistor R62 and a sixty-three resistor R63, and the 3 rd end is also grounded through a sixty-one capacitor C61 after passing through a sixty-two resistor R62;

referring to fig. 12, in the earphone interface module 212, a 2 nd end of the fifth interface J5 is sequentially connected to a 33 rd end of the fourteenth chip U14 through a twenty-seventh resistor R27 and a one hundred twenty-seventh capacitor C127, a 3 rd end is sequentially connected to a 34 th end of the fourteenth chip U14 through a twenty-eighth resistor R28 and a one hundred twenty-eight capacitor C128, one path of the 5 th end is connected to a 41 th end of the fourteenth chip U14 through a one hundred sixty-first resistor R161, the other path is connected to a power supply through a sixth resistor R6, one end of the thirty-th resistor R30 is connected to the 3 rd end, the other end is grounded to the 1 st end and the 4 th end, and the 2 nd end is further grounded through a seventeenth resistor R17;

referring to fig. 13, the function key module 5 is specifically that the 1 st end of the first switch K1 is connected to the 42 th end of the fourteenth chip U14, the 2 nd end is connected to the 43 th end of the fourteenth chip U14, the 3 rd end is connected to the 27 th end of the fourteenth chip U14 through the twelfth resistor R12, the 3 rd end is connected to the power supply through the seventh resistor R7 after passing through the twelfth resistor R12, and the thirty-second capacitor C32, the series-connected MODE button and fifty-first resistor R51, the series-connected CLOCK button and second fifty-second resistor R52, the series-connected ALARM button and third resistor R53, the series-connected PAIR button and fourth fifty-fourth resistor R54, the series-connected PREV button and fifth resistor R55, the series-connected NEXT button and tenth resistor R10, the series-connected EQ button and eleventh resistor R11 are connected to one end of the twelfth resistor R12, and the other end is connected to the ground;

referring to fig. 14, the TF card slot 6 is specifically that the 3 rd end of the TF card reading chip is connected to the 47 th end of the fourteenth chip U14, one path of the 4 th end is connected to the 3V power supply through a fifty-third resistor R50, the other path is grounded through a fifty-third capacitor C53, the 5 th end is connected to the 46 th end of the fourteenth chip U14, the 6 th end is grounded, the 7 th end is connected to the 48 th end of the fourteenth chip U14, the 9 th end is connected to the 45 th end of the fourteenth chip U14, and the 9 th end is further connected to the 5 th end through a forty-ninth resistor R49;

referring to fig. 15, the circuit of the USB interface 7 is specifically that the 1 st terminal of the USB interface is connected to the power supply via the one hundred fifty-six resistor R156, the 2 nd terminal is connected to the 23 rd terminal of the fourteenth chip U14 via the one hundred fifty-four resistor R154, the 3 rd terminal is connected to the 24 th terminal of the fourteenth chip U14 via the one hundred fifty-five resistor R155, and the 4 th, 5 th and 6 th terminals are commonly grounded.

Referring to fig. 16, the circuit further including the external microphone includes a first microphone circuit, a second microphone circuit, a third microphone circuit;

referring to fig. 16a, the first microphone circuit is specifically that the 1 st end of the converter is grounded, one path of the 2 nd end is sequentially connected to the battery power supply through a forty-first resistor R41 and a fifty-eighth resistor R58, one path of the 2 nd end is sequentially connected to the battery power supply through the forty-first resistor R41 and then respectively grounded through a twenty-third resistor R23, a twentieth capacitor C20 and a twenty-eighth capacitor C28, the other path is sequentially connected to the 3 rd end of the seventh operational amplifier A7 through an eighty-first capacitor C81 and a seventy-third resistor R73, the 1 st end of the seventh operational amplifier A7 is sequentially connected to the 6 th end of the seventh operational amplifier A7 through a seventy capacitor C70, an eighty-second resistor R82 and a seventy-third capacitor C73, the 7 th end of the seventh operational amplifier A7 is sequentially connected to the eighty-eighth resistor R3927, an eighty-eighth sub-eighth resistor R88 and a thirty-eighth resistor R4642 and then sequentially connected to the eighty-tenth capacitor C68 and then respectively connected to the eighty-eighth resistor R47, The forty-eighth resistor R48 is connected with the power amplifier module, and is also connected with the 3 rd end of a thirteenth polar tube Q10 after sequentially passing through a sixty-eighth capacitor C68 and an eighty-eighth resistor R88; the 2 nd end of the seventh operational amplifier A7 is also grounded through a ninety-first resistor R91 and an eighteenth capacitor C18 in sequence, the 3 rd end is also connected with a seventy-fifth resistor R75, the 5 th end is connected with a seventy-ninth resistor R79, one end of a parallel eighty-fifth capacitor C85 and one end of a seventy-fourth resistor R74 are connected between the 1 st end of the seventh operational amplifier A7 and the seventy-fifth capacitor C70, the other end is connected with the 2 nd end of the seventh operational amplifier A7, one end of a parallel eighty-fourth resistor R84 and one end of a parallel eighty-sixth capacitor C86 are connected between the 7 th end of the seventh operational amplifier A7 and a sixty-eighth capacitor C68, and the other end is connected between the 6 th end of the seventh operational amplifier A7 and a seventy-third capacitor C73; the 1 st end of the thirteenth polar tube Q10 is connected with the second microphone circuit, and the 2 nd end is grounded; the 3 rd end of the converter is grounded through a second voltage-stabilizing diode DZ2 and a fifty-sixth resistor R56 in sequence, the 3 rd end is also connected with the 1 st end of a third triode Q3 after passing through a second voltage-stabilizing diode DZ2 in sequence, the 2 nd end of the third triode Q3 is grounded, the 3 rd end is connected with the 1 st end of a fifth triode Q5 through a fifty-seventh resistor R57, the 2 nd end of the fifth triode Q5 is connected with a battery power supply, the 3 rd end is connected with a second microphone circuit and a third microphone circuit, and a sixty resistor R60 is connected between the 2 nd end and the 3 rd end;

referring to fig. 16b, the second microphone circuit is specifically that one end of the first rectifying diode D1 and one end of the ninety third resistor R93 are combined into one path and connected to the first microphone circuit, the other end of the first rectifying diode D1 is connected to the S end of the eleventh triode Q11, one path of the other end of the ninety third resistor R93 is connected to the G end of the eleventh triode Q11 through the first hundred-zero four resistor R104, the other path is grounded through the nineteenth capacitor C19, one path of the D end of the eleventh triode Q11 after passing through the first hundred-zero three resistor R103 is connected to the first microphone circuit, and the other path is grounded through the first hundred-zero five resistor R105; a sixth rectifying diode D6 is connected in parallel with a ninety-third resistor R93; one end of a first zero-second resistor R102 and one end of a thirteenth capacitor C13 which are connected in series are connected with the S end of the eleventh triode Q11, and the other end of the eleventh capacitor C13 is grounded;

referring to fig. 16c, in the third microphone module, one end of the seventy resistor R70 is connected to the first microphone circuit, one end of the other end is connected to the 8 th end of the seventh operational amplifier a7, and the other end is connected to one end of the seventy-first resistor R71; the 4 th end of the seventh operational amplifier A7 is grounded; one ends of a sixty-ninth capacitor C69 and an eighty-fourth capacitor C84 are connected between the other end of the seventy resistor R70 and the 8 th end of the seventh operational amplifier A7, and the other ends are grounded; one end of the seventy-second resistor R72, one end of the sixty-seventh capacitor C67 and one end of the eighty-third capacitor C83 are all connected to the other end of the seventy-first resistor R71, and the other ends are all grounded.

Example 2

The embodiment 1 of the invention provides a playing and transmitting method of an intelligent sound box, which comprises the following steps: the control panel receives the audio signal and converts the audio signal into a sound source signal; the control panel controls the loudspeaker module to directly play the audio signal according to the preselected playing mode and/or transmits the audio signal to at least one external special wireless earphone through the FM transmitting module and converts and plays the audio signal through the wireless earphone.

In particular, the amount of the solvent to be used,

step S1, the control panel receives audio signals through a Bluetooth receiving module, an FM receiving module, a TF card slot, a USB interface or an external sound source input module;

step S2, selecting a playback mode;

specifically, if a power amplification mode of the loudspeaker box body is selected, the loudspeaker module works, and the power amplification module of the loudspeaker module amplifies and plays the received audio signal;

if the external earphone mode is selected, the main control module of the control panel converts the received audio signal into an FM signal and transmits the FM signal to an external wireless earphone through an FM transmitting module; an external wireless earphone receives the FM signal and converts the FM signal into a broadcast signal;

if a power amplification mode of the box body and a simultaneous playing mode of an external earphone are selected, the loudspeaker module works, the power amplification module of the loudspeaker module amplifies and plays the received audio signals, meanwhile, the main control module of the control panel converts the received audio signals into FM signals and transmits the FM signals to the external wireless earphone through the FM transmitting module; the external wireless earphone receives the FM signal and converts the FM signal into a broadcast.

The sound box is converted and transmitted to the specially customized earphone for playing. The existing Bluetooth wireless transmission can only be transmitted one by one, and the existing Bluetooth wireless transmission is 1 to 2, but the invention transmits Bluetooth to the sound box and then transmits the Bluetooth to a plurality of pairs of specific earphones by the sound box, really achieving the unique function of synchronously receiving the same signal source at the same time, and simultaneously being capable of converting various sound sources through a TF card, a U disk and an external sound source besides the Bluetooth transmission conversion.

When the wireless earphone is used, the wireless earphone can be used for receiving and amplifying a sound source, and meanwhile, an audio signal can be converted into a sound source signal and transmitted, and the sound source signal can be received by a corresponding wireless earphone; when the multifunctional music player is used, a sound box can be selected to play music, a wireless earphone can also be selected to listen, two playing modes of receiving music through the sound box and the earphone can be synchronously carried out, and the PCB boards for carrying out the two modes also only need to share one power supply, so that a novel multi-mode product with synchronous receiving, playing, transmitting and receiving functions is achieved. Therefore, most users can listen by using the earphones at the same time, and the interference to other people can be avoided while the synchronous listening of a plurality of users is ensured; the invention thoroughly solves the problem that the square dance activities affect other people, all people can listen to music to dance by wearing the movable earphone which is arranged by the machine and matching with the sound box, and the sound box can be switched on at low volume or without volume, thereby achieving the purpose of singing and dancing without interfering other people.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. The utility model provides an intelligent sound box, its characterized in that, includes audio amplifier box, control panel, wireless earphone and outside microphone, be provided with speaker, display screen, function key module, TF card slot, the USB interface of being connected with the control panel electricity on the audio amplifier box, the control panel sets up in the audio amplifier box, the control panel includes host system, bluetooth receiving module, FM emission module, voltage management module, the module of charging, speaker module, electron volume module, audio output module, outer sound source input module, built-in microphone module, earphone interface module, wireless earphone is provided with a plurality of sound source signals that are used for receiving the FM emission module transmission, outside microphone is connected with the control panel electricity.

2. The smart sound box of claim 1, wherein the main control module comprises a fourteenth chip U14, a first crystal oscillator circuit, a first crystal oscillator tube X1, an eighth capacitor C8, a twenty-fifth capacitor C25, a one hundred twenty-ninth capacitor C129, a one hundred thirty-sixth capacitor C136, a one hundred thirty-eighth capacitor C138, a one hundred thirty-ninth capacitor C139, a one hundred forty-third capacitor C143, and a one hundred forty-fourth capacitor C144;

the 2 nd end of the fourteenth chip U14 is connected to one end of an eighth capacitor C8, one of the 3 rd end is connected to one end of a twenty-ninth capacitor C129, the other is connected to one end of a twenty-fifth capacitor C25, the 4 th end is connected to one end of a thirty-sixth capacitor C136, the 1 st end and the other end of the eighth capacitor C8, the other end of the twenty-ninth capacitor C129, the other end of the twenty-fifth capacitor C25 and the other end of the thirty-sixth capacitor C136 are grounded together, the 2 nd, 5 th, 6 th and 45 th ends are connected to a voltage management module, the 7 th, 25 th, 26 th, 33 th and 34 ends are connected to a loudspeaker module, a first crystal oscillator X1 is connected between the 8 th and 9 th ends in parallel, the 8 th end and the 9 th end are grounded together after passing through a forty-third capacitor C143 and a forty-fourteenth capacitor C144, the 10 th and 11 th ends are connected to a Bluetooth receiving module, the 12 th end is grounded, the 13 th and 14 th crystal oscillator circuit, 17. 18, 19, 20, 21 and 22 are connected with a display screen, 23 th and 24 th USB interfaces, 27 th, 42 th and 43 th function key modules, 28 th and 29 th external sound source input modules, 30 th and 31 th FM transmitting modules, 32 th end is connected with a built-in microphone module, 35 th end is grounded after passing through a one hundred thirty eight capacitor C138 and 36 th end after passing through a one hundred thirty nine capacitor C139, 37 th, 38 th, 39 and 40 th end is connected with an FM receiving module, 41 th end is connected with an earphone interface module, 46 th, 47 th and 48 th end is connected with a TF card slot;

3. The smart sound box of claim 2, wherein the bluetooth receiving module comprises a bluetooth antenna BT, a one hundred thirty capacitor C130, a one hundred thirty seven capacitor C137, an eighth inductor L8, and a ninth inductor L9, the 1 st end of the bluetooth antenna BT is grounded, the 2 nd end is sequentially connected to the 11 th end of a fourteenth chip U14 through the one hundred thirty capacitor C130 and the ninth inductor L9, one end of the eighth inductor L8 is connected between the one hundred thirty capacitor C130 and the ninth inductor L9, the other end is grounded, one end of the one hundred thirty seven capacitor C137 is connected to the 10 th end of the fourteenth chip U14, and the other end is grounded.

4. The smart sound box according to claim 3, wherein the FM receiving module comprises an FM receiving antenna, a thirty-sixth capacitor C36, a forty-sixth capacitor C40, a one hundred thirty-third capacitor C133, a one hundred thirty-fourth capacitor C134 and an eleventh inductor L11, the FM receiving antenna is connected to one end of the thirty-sixth capacitor C36, a first of the other ends of the thirty-sixth capacitor C36 is connected to the 39 th end of the fourteenth chip U14, a second is connected to one end of the forty-fourth capacitor C40, a third is connected to one end of the eleventh inductor L6, the other end of the forty-fourth capacitor C40 is connected to the other end of the eleventh inductor L25 in common, one end of the one hundred thirty-third capacitor C133 is connected to the 40 th end of the fourteenth chip U14, a first of the other end is connected to the 38 th end of the fourteenth chip U14, a second is connected to the second end of the thirty-fourth capacitor C134, a second of the one hundred thirty-fourth capacitor C134 is connected to the fourteenth chip U48337, the other path is grounded.

5. The smart speaker of claim 4, wherein the FM transmitting module comprises an eighth chip U8, an FM transmitting antenna circuit, a second crystal circuit, a ninety-fourth resistor R94, a ninety-fifth resistor R95, a ninety-sixth resistor R96, a first hundred resistor R100, a first hundred-zero resistor R101, a fifty-eighth capacitor C58, a fifty-ninth capacitor C59, and a sixty-third capacitor C63; the 1 st and 2 nd ends of the eighth chip U8 are connected with the second crystal oscillator circuit, one combined path of the 3 rd end and the 8 th end is connected with the voltage processing module through a ninety-fifth resistor R95, a fifty-eighth capacitor C58 is connected between the other path and one path of the 4 th end in parallel, the other path of the 4 th end is grounded, the 5 th end is connected with the FM transmitting antenna circuit, the 6 th end is connected with the 31 st end of the fourteenth chip U14 through a one-hundred resistor R100, the 7 th end is connected with the 30 th end of the fourteenth chip U14 through a one-hundred-zero resistor R101, the 9 th end is connected with the electronic volume module after sequentially passing through a fifty-ninth capacitor C59 and a ninety-sixth resistor R96 and sequentially passing through a sixty-third capacitor C63 and a ninety-fourth resistor R94 with the 10 th end;

6. The smart sound box of claim 5, wherein the voltage management module 205 comprises a power switch chip circuit, a lithium battery circuit, a first switch circuit, and a second switch circuit.

7. The smart sound box of claim 6, wherein the speaker module comprises a speaker output module and a power amplifier module, and the speaker output module comprises a first output circuit and a second output circuit.

8. A playing and transmitting method of an intelligent sound box is characterized by comprising the following steps: the control panel receives the audio signal and converts the audio signal into a sound source signal; the control panel controls the loudspeaker module to directly play the audio signal according to the preselected playing mode and/or transmits the audio signal to at least one external wireless earphone through the FM transmitting module and converts and plays the audio signal through the wireless earphone.

9. The method as claimed in claim 8, wherein the control board receives audio signals, and in particular, the control board receives audio signals through a bluetooth receiving module, an FM receiving module, a TF card slot, a USB interface, or an external sound source input module.