CN217335860U

CN217335860U - Multifunctional ENC communication noise reduction earphone

Info

Publication number: CN217335860U
Application number: CN202220850978.7U
Authority: CN
Inventors: 刘源
Original assignee: Huizhou City Chengda Electronics Co ltd
Current assignee: Huizhou City Chengda Electronics Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-08-30
Anticipated expiration: 2032-04-13

Abstract

The utility model discloses a multi-functional ENC conversation noise reduction earphone, including main control chip and charge-discharge management circuit, main control chip's feeder ear and charge-discharge management circuit electric connection, main control chip's signal receiving terminal and bluetooth receiving and transmitting circuit electric connection, main control chip's audio output end, earphone audio amplification circuit and output horn circuit electric connection, main MIC signal control circuit is used for the input of conversation signal, vice MIC signal control circuit is used for the input of input environment signal; the USBDP port and the USBDM port of main control chip and external equipment signal transmission, and external equipment includes TYPE-C signal input, cell-phone signal input and PC end signal input, can be better play the effect of making an uproar of falling through designing two MIC signal control circuit, and through with main control chip and USBDP port and USBDM port and external equipment signal transmission, can the multiple model of adaptation to can be through bluetooth receiving transmitting circuit wireless connection.

Description

Multifunctional ENC communication noise reduction earphone

Technical Field

The utility model relates to an earphone technical field of making an uproar specifically is earphone of making an uproar falls in multi-functional ENC conversation.

Background

The active noise reduction function is that reverse sound waves equal to external noise are generated through a noise reduction system, and the noise is neutralized, so that the noise reduction effect is achieved, and the passive noise reduction earphone mainly forms a closed space by surrounding ears or adopts sound insulation materials such as silica gel earplugs to block the external noise.

However, the existing noise reduction earphone often has a single function, and cannot be widely applied to existing various electronic devices.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an earphone of making an uproar falls in multi-functional ENC conversation, the effect of making an uproar falls in playing that can be better through the two MIC signal control circuit of design, and through with main control chip and USBDP port and USBDM port and external equipment signal transmission, can multiple model of adaptation to can receive transmitting circuit through the bluetooth and can wireless connection, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the multifunctional ENC call noise reduction earphone comprises a main control chip and a charge and discharge management circuit, wherein a power supply end of the main control chip is electrically connected with the charge and discharge management circuit, a signal receiving end of the main control chip is electrically connected with a Bluetooth receiving and transmitting circuit, an audio output end of the main control chip is electrically connected with an earphone audio amplification circuit, and the earphone audio amplification circuit is electrically connected with an output loudspeaker circuit;

MIC0_ RP, MIC0_ RN, MIC1_ LN and MIC1_ LP ports of the main control chip are respectively and electrically connected with an MIC signal control circuit, the MIC signal control circuit comprises a main MIC signal control circuit and an auxiliary MIC signal control circuit, the main MIC signal control circuit is used for inputting a call signal, and the auxiliary MIC signal control circuit is used for inputting an environment signal;

signal transmission between the USBDP port and USBDM port and the TYPEC interface of main control chip, the TYPEC interface is connected transmission signal data with external equipment, external equipment includes cell-phone, PC, IPAD and audio player.

Preferably, the bluetooth receiving and transmitting circuit includes a capacitor C28, the signal receiving terminal of the main control chip is connected to one end of a capacitor C28 and one end of an inductor L2, the other end of the capacitor C28 is connected to the receiver and one end of an inductor L5, and the other ends of the inductor L5 and the inductor L2 are grounded.

Preferably, the DACR-, DACR +, DACL-, and DACL + ports of the main control chip are respectively connected to one ends of a resistor R7, a resistor R8, a resistor R9, and a resistor R10 of the earphone audio amplification circuit, the other ends of the resistor R7, the resistor R8, the resistor R9, and the resistor R10 are respectively connected to one ends of a capacitor C19, a capacitor C20, a capacitor C21, and a capacitor C23, the other ends of the capacitor C19, the capacitor C20, the capacitor C21, and the capacitor C23 are all electrically connected to a receiving end of the earphone audio amplification control chip, and the DACR and DACL ends of the earphone audio amplification control chip are respectively electrically connected to two output speaker circuits.

Preferably, the LED _ B/R port of the main control chip is connected to one end of the light emitting diode D2 and one end of the light emitting diode D3, respectively.

Preferably, the P/POWER port of the main control chip is electrically connected to the function key control circuit, the P/POWER port of the main control chip is connected to one end of the key K6, and the other end of the key K6 is connected to one end of the key K1 and one end of the key K2, respectively.

Preferably, the charge and discharge management circuit comprises a charge and discharge circuit and a battery protection IC circuit, the battery protection IC circuit comprises a resistor R11, one end of the resistor R11 is respectively connected with one end of a capacitor C24 and the base of a triode Q1, the collector of the triode Q1 is connected with the other end of the capacitor C24, and the emitter of the triode Q1 is grounded.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a multi-functional ENC conversation noise reduction earphone, MIC0_ RP, MIC0_ RN, MIC1_ LN, MIC1_ LP port through with master control chip is connected with MIC signal control circuit respectively, thereby can transmit the sound signal of receipt to master control chip through the master control chip's main MIC signal control circuit and vice MIC signal control circuit, and then carry out noise reduction processing through relevant software by master control chip, compare current noise reduction earphone, noise reduction effect can be better, and through connecting master control chip and function button control circuit, can carry out control processing to the earphone through various buttons, and make the LED _ B/R port of master control chip and respectively with emitting diode D2 and emitting diode D3's one end be connected, make the earphone have the LED scintillation of following corresponding audio frequency, make the function of earphone abundant, and can be through bluetooth receiving transmitting circuit wireless connection, and signal transmission with external equipment is realized through the USBDP port and the USBDM port of the main control chip, so that the electronic equipment can be adapted to most of electronic equipment on the market.

Drawings

FIG. 1 is a block diagram of the system of the present invention;

FIG. 2 is a circuit diagram of the control chip and the Bluetooth transceiver of the present invention;

fig. 3 is a circuit diagram of MIC signal control according to the present invention;

fig. 4 is a circuit diagram of the earphone audio amplifier of the present invention;

fig. 5 is a circuit diagram of the audio output speaker of the present invention;

fig. 6 is a circuit diagram of the charge and discharge management of the power supply of the present invention;

fig. 7 is a circuit diagram of the function key control and external circuit signal input circuit of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a multi-functional ENC conversation noise reduction earphone as shown in fig. 1-7, including main control chip and charge-discharge management circuit, the feeder terminal and the charge-discharge management circuit electric connection of main control chip, the signal receiving terminal and the bluetooth receiving and transmitting circuit electric connection of main control chip, the audio output end and the earphone audio amplification circuit electric connection of main control chip, earphone audio amplification circuit and output loudspeaker circuit electric connection;

MIC0_ RP, MIC0_ RN, MIC1_ LN and MIC1_ LP ports of the main control chip are respectively electrically connected with MIC signal control circuits, each MIC signal control circuit comprises a main MIC signal control circuit and an auxiliary MIC signal control circuit, the main MIC signal control circuit is used for inputting call signals, the auxiliary MIC signal control circuits are used for inputting environment signals, and one MIC signal control circuit is used for communicating the other MIC signal control circuit and collecting environment sounds through setting two MIC signal control circuits, so that a double Microphone (MIC) has a call noise reduction function (ENC) when a call is realized through a technical algorithm;

the USBDP port and the USBDM port and the external equipment signal transmission of main control chip, external equipment include TYPE-C signal input, cell-phone signal input and PC end signal input, have the TYPE-C function, homoenergetic normal use (final compatibility will depend on the platform at terminal) on android mobile phone and PC, the mode can the communication under, also can the network signal conversation, the button function simultaneously: volume up, volume down, pause/play, previous song, next song, and mute switch function of microphone.

The bluetooth receives transmitting circuit includes electric capacity C28, and the signal receiving terminal and electric capacity C28 and inductance L2's of main control chip one end are connected, and the other end of electric capacity C28 is connected with receiver and inductance L5's one end respectively, and inductance L5 and inductance L2's other end ground connection make equipment can have bluetooth BT5.2 function and compatible low bluetooth edition down, button function under the bluetooth mode: volume up, volume down, pause/play, previous song, next song, the mute switch function of the microphone.

The DACR-, DACR +, DACL-, DACL + ports of the main control chip are respectively connected with one ends of a resistor R7, a resistor R8, a resistor R9 and a resistor R10 of the earphone audio amplifying circuit, the other ends of the resistor R7, the resistor R8, the resistor R9 and the resistor R10 are respectively connected with one ends of a capacitor C19, a capacitor C20, a capacitor C21 and a capacitor C23, the other ends of the capacitor C19, the capacitor C20, the capacitor C21 and the capacitor C23 are respectively and electrically connected with a receiving end of the earphone audio amplifying control chip, the DACR and DACL ends of the earphone audio amplifying control chip are respectively and electrically connected with two output horn circuits, and the LED _ B/R port of the main control chip is respectively connected with one ends of a light emitting diode D2 and a light emitting diode D3, so that the earphone has an LED with a corresponding audio frequency.

The P/P/POWER port of the main control chip is electrically connected with the function key control circuit, the P/P/POWER port of the main control chip is connected with one end of a key K6, the other end of a key K6 is respectively connected with one end of a key K1 and one end of a key K2, the P/P/POWER port of the main control chip is used for controlling volume up, volume down, pause/play, previous bend and next bend respectively by arranging three or more entity keys of the keys, the charge and discharge management circuit comprises a charge and discharge circuit and a battery protection IC circuit, the battery protection IC circuit comprises a resistor R11, one end of a resistor R11 is respectively connected with one end of a capacitor C24 and a base electrode of a triode Q1, a collector electrode of the triode Q1 is connected with the other end of a capacitor C24, and an emitter electrode of the triode Q1 is grounded.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Multi-functional ENC conversation noise reduction earphone, including main control chip and charge-discharge management circuit, its characterized in that: the power supply end of the main control chip is electrically connected with the charging and discharging management circuit, the signal receiving end of the main control chip is electrically connected with the Bluetooth receiving and transmitting circuit, the audio output end of the main control chip is electrically connected with the earphone audio amplifying circuit, and the earphone audio amplifying circuit is electrically connected with the output loudspeaker circuit;

MIC0_ RP, MIC0_ RN, MIC1_ LN and MIC1_ LP ports of the main control chip are respectively and electrically connected with an MIC signal control circuit, the MIC signal control circuit comprises a main MIC0 signal control circuit and an auxiliary MIC1 signal control circuit, the main MIC0 signal control circuit is used for inputting a call signal, and the auxiliary MIC1 signal control circuit is used for inputting an environment signal;

2. The multi-functional ENC call noise reduction earphone of claim 1, wherein: the bluetooth is received transmitting circuit and is included electric capacity C28, main control chip's signal reception end is connected with electric capacity C28 and inductance L2's one end, electric capacity C28's the other end is connected with receiver and inductance L5's one end respectively, inductance L5 and inductance L2's other end ground connection.

3. The multi-functional ENC call noise reduction earphone of claim 1, wherein: the DACR-, DACR +, DACL-, and DACL + ports of the master control chip are respectively connected with one ends of a resistor R7, a resistor R8, a resistor R9 and a resistor R10 of the earphone audio amplification circuit, the other ends of the resistor R7, the resistor R8, the resistor R9 and the resistor R10 are respectively connected with one ends of a capacitor C19, a capacitor C20, a capacitor C21 and a capacitor C23, the other ends of the capacitor C19, the capacitor C20, the capacitor C21 and the capacitor C23 are respectively and electrically connected with a receiving end of the earphone audio amplification control chip, and the DACR and DACL ends of the earphone audio amplification control chip are respectively and electrically connected with the two output horn circuits.

4. The multi-functional ENC call noise reduction earphone of claim 1, wherein: and the LED _ B/R port of the main control chip is respectively connected with one end of the light-emitting diode D2 and one end of the light-emitting diode D3.

5. The multi-functional ENC call noise reduction earphone of claim 1, wherein: the P/P/POWER port of the main control chip is electrically connected with the function key control circuit, the P/P/POWER port of the main control chip is connected with one end of a key K6, and the other end of the key K6 is connected with one end of a key K1 and one end of a key K2 respectively.

6. The multi-functional ENC call noise reduction earphone of claim 1, wherein: the charge and discharge management circuit includes charge and discharge circuit and battery protection IC circuit, battery protection IC circuit includes resistance R11 the one end of resistance R11 is connected with electric capacity C24's one end and triode Q1's base respectively, triode Q1's collecting electrode is connected with electric capacity C24's the other end, triode Q1's emitter ground.