CN207603853U - A kind of active noise reduction bluetooth headset - Google Patents

A kind of active noise reduction bluetooth headset Download PDF

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Publication number
CN207603853U
CN207603853U CN201721395522.1U CN201721395522U CN207603853U CN 207603853 U CN207603853 U CN 207603853U CN 201721395522 U CN201721395522 U CN 201721395522U CN 207603853 U CN207603853 U CN 207603853U
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China
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module
noise reduction
bluetooth
active noise
bluetooth headset
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CN201721395522.1U
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曾忠文
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Shenzhen YYu science and Technology Co., Ltd.
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曾忠文
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Abstract

The utility model belongs to bluetooth headset technical field, discloses a kind of active noise reduction bluetooth headset, including:For receiving and emitting the Bluetooth antenna of Bluetooth signal;It is connect with the Bluetooth antenna, for receiving the Bluetooth signal, and exports the bluetooth module of digital audio and video signals;For the noise gathering module of acquisition noise signal;It is connect with the bluetooth module and the noise gathering module, for receiving the digital audio and video signals, and the noise reduction module for analog audio signal output being converted to after the digital audio and video signals active noise reduction;And connect with the bluetooth module and the noise reduction module, for the power module for the bluetooth module and noise reduction module power supply.Above-mentioned active noise reduction bluetooth headset has good decrease of noise functions, and strong antijamming capability, and voice signal loss is low, can effectively improve call or listen the sound quality of audio.

Description

A kind of active noise reduction bluetooth headset
Technical field
The utility model belongs to bluetooth headset technical field more particularly to a kind of active noise reduction bluetooth headset.
Background technology
Bluetooth headset, can not by common wireline earphone as a kind of and matching used Bluetooth communication equipment of communication terminal The wireless transmission function of analogy, is more and more widely used.
In the prior art, the transmission mode between blue-tooth device and noise reduction process device is analog audio signal transmission side Formula, i.e., must be first number in blue-tooth device part after the digital audio and video signals for receiving that transmitting terminal launches in blue-tooth device Word audio signal is converted into analog audio signal by D/A conversion circuit, and then transformed analog audio signal is passed again It is sent to after noise reduction process device is handled and is played back by sound play device, and this analog audio signal transmission mode Easily by the situation of outer interference and voice signal loss in transmission analog audio signal way, and cause to occur some noises and Sound quality declines the situation of distortion.
Therefore, traditional noise reduction bluetooth headset has is vulnerable to outer interference and voice signal during audio signal transmission The problem of being lost and sound quality caused to decline.
Invention content
The purpose of this utility model is to provide a kind of active noise reduction bluetooth headsets, solve traditional noise reduction bluetooth headset Be vulnerable to outer interference and voice signal loss during audio signal transmission and the problem of sound quality is caused to decline.
The utility model embodiment is achieved in that a kind of active noise reduction bluetooth headset, including:For receiving and sending out Penetrate the Bluetooth antenna of Bluetooth signal;It is connect with the Bluetooth antenna, for receiving the Bluetooth signal, and exports digital audio letter Number bluetooth module;For the noise gathering module of acquisition noise signal;With the bluetooth module and the noise gathering module Connection for receiving the digital audio and video signals, and will be converted to analogue audio frequency letter after the digital audio and video signals active noise reduction Number output noise reduction module;And connect with the bluetooth module and the noise reduction module, for for the bluetooth module and institute State the power module of noise reduction module power supply.
Further, the active noise reduction bluetooth headset is further included connect with the noise reduction module, described for receiving The analog audio signal of noise reduction module output and the sound broadcasting module played.
Further, the active noise reduction bluetooth headset is further included connect with the noise reduction module, is simulated for receiving The sound acquisition module of audio signal.
Further, believed between the bluetooth module and the noise reduction module by digital audio described in I2S bus transfers Number.
Further, pass through I2C bus transfer control commands between the bluetooth module and the noise reduction module.
Further, the active noise reduction bluetooth headset is further included connect with the bluetooth module, for switching on and shutting down and The key-press module of function control.
Further, the active noise reduction bluetooth headset further includes the state instruction mould being connect with the bluetooth module Block.
Further, the active noise reduction bluetooth headset further includes the charging interface for being connect with external charger.
Further, the charging interface is USB interface, Type-C interfaces or Micro USB interfaces.
Further, the bluetooth module and the noise reduction module integrate on the same chip.
Above-mentioned active noise reduction bluetooth headset can carry out active noise reduction processing, and in bluetooth to the Bluetooth signal received Transmission mode between module and noise reduction module is I2S digital audio and video signals transmission modes, with good decrease of noise functions, and Strong antijamming capability, voice signal loss is low, can effectively improve call or listen the sound quality of audio.
Description of the drawings
Fig. 1 is the circuit module schematic diagram of the active noise reduction bluetooth headset of the utility model.
Fig. 2 is the exemplary circuit schematic diagram of the bluetooth module in active noise reduction Bluetooth earphone circuit shown in Fig. 1.
Fig. 3 is the exemplary circuit schematic diagram of the noise gathering module in active noise reduction Bluetooth earphone circuit shown in Fig. 1.
Fig. 4 is the exemplary circuit schematic diagram of the noise reduction module in active noise reduction Bluetooth earphone circuit shown in Fig. 1.
Fig. 5 is the exemplary circuit schematic diagram of the sound broadcasting module in active noise reduction Bluetooth earphone circuit shown in Fig. 1.
Fig. 6 is the exemplary circuit schematic diagram of the sound acquisition module in active noise reduction Bluetooth earphone circuit shown in Fig. 1.
Fig. 7 is the interface exemplary circuit schematic diagram of the I2S buses in active noise reduction Bluetooth earphone circuit shown in Fig. 1.
Fig. 8 is the exemplary circuit schematic diagram of the key-press module in active noise reduction Bluetooth earphone circuit shown in Fig. 1.
Fig. 9 is the exemplary circuit schematic diagram of the state indicator module in active noise reduction Bluetooth earphone circuit shown in Fig. 1.
Figure 10 is the exemplary circuit schematic diagram of charging interface.
Figure 11 is that the bluetooth module of the active noise reduction bluetooth headset of the utility model and noise reduction module are integrated in same chip On exemplary circuit schematic diagram.
Figure 12 is the exemplary circuit schematic diagram of the Bluetooth antenna in active noise reduction Bluetooth earphone circuit shown in Fig. 1.
Figure 13 is the exemplary circuit schematic diagram of the power module in active noise reduction Bluetooth earphone circuit shown in Fig. 1.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention is further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.
It please refers to Fig.1 to Figure 13, active noise reduction bluetooth headset includes bluetooth day in the preferred embodiment of the utility model Line 11, bluetooth module 12, noise gathering module 13, noise reduction module 14, power module 15, sound broadcasting module 16, sound collection Module 17, key-press module 18, state indicator module 19 and charging interface 20.Wherein, bluetooth module 12 and Bluetooth antenna 11, drop Module of making an uproar 14, power module 15, key-press module 18 and state indicator module 19 connect, noise reduction module 14 and noise gathering module 13rd, power module 15, sound broadcasting module 16 and sound acquisition module 17 connect.
For Bluetooth antenna 11 for receiving and emitting Bluetooth signal, Bluetooth antenna 11 can be with other electronic equipments such as hand Machine, tablet etc. carry out Bluetooth matching, play data connection or the effect of call;Bluetooth module 12 is used to receive Bluetooth signal, and Export digital audio and video signals;Noise gathering module 13 is used for acquisition noise signal;Noise reduction module 14 is believed for receiving digital audio Number, and analog audio signal output will be converted to after the digital audio and video signals active noise reduction;Power module 15 is used for as bluetooth Module 12 and noise reduction module 14 are powered;Sound broadcasting module 16 be used for receive noise reduction module 14 output analog audio signal simultaneously It plays;Sound acquisition module 17 is used to receive analog audio signal;Pass through I2S buses between bluetooth module 12 and noise reduction module 14 Transmit digital audio and video signals;Pass through I2C bus transfer control commands between bluetooth module 12 and noise reduction module 14;Key-press module 18 are used for switching on and shutting down and function control;Charging interface 20 is connect with external charger, for charging to power module 15;Charging Mouth 20 is USB interface, Type-C interfaces or Micro USB interfaces.The active noise reduction bluetooth headset of the utility model further includes 26M Crystal and 32K crystal, wherein, for 26M crystal for providing system master clock, 32K crystal are low for system It is used during power consumption.
Primary Component of the Bluetooth antenna 11 as wireless receiving and dispatching can emit the signal of bluetooth module 12 to external reception Terminal can also receive external signal so that the active noise reduction bluetooth headset of the utility model answers bluetooth telephone and blue The functions together as one such as tooth music.
Bluetooth module 12 can integrate on the same chip with noise reduction module 14, and bluetooth module 12 also may be used with noise reduction module 14 It is realized respectively using different control chips.As shown in figure 11 same chip is integrated in noise reduction module 14 for bluetooth module 12 Exemplary circuit schematic diagram on U3.As Fig. 2, Fig. 4 and Fig. 7 show bluetooth module 12 and noise reduction module 14 respectively using different The exemplary circuit schematic diagram that chip is controlled to realize, wherein, bluetooth module 12 includes a Master control chip U1, noise reduction module 14 Including a Master control chip U2, multiple pins, the I2S_ of bluetooth module 12 are provided on bluetooth module 12 and noise reduction module 14 LRCK feet, I2S_BCLK feet, I2S_ADCDAT feet, I2S_DACDAT feet and I2S_MCLK feet pass through resistance R8, resistance respectively R9, resistance R10, resistance R11 and resistance R12 and LRCK1 feet, BCLK1 feet, ADCDAT1 feet, the DACDAT1 feet of noise reduction module 14 It is connected with MCLK feet, passes through I2S Digital Audio Transmission modes so as to fulfill by the digital audio and video signals that bluetooth module 12 receives It is transmitted to noise reduction module 14 and carries out active noise reduction processing.The I2C_SDA feet and I2C_SCL feet of bluetooth module 12 pass through electricity respectively Resistance R6 and resistance R7 is connect with noise reduction module 14, is used to implement various control instructions between bluetooth module 12 and noise reduction module 14 Transmission.Noise reduction module 14 can reduce the interference of noise automatically when user listens to audio using earphone so that user feels By better auditory effect.
Active noise reduction bluetooth headset further includes charging module (not shown), and charging module connect with charging interface 20, fills Electric module starts charging work(when charging interface 20 has plant-grid connection for detecting whether charging interface 20 has plant-grid connection Can, for example, when charging module monitors the access of 5V voltages, start charge function, at this point, can be by external charger to actively Formula noise reduction bluetooth headset charges.
Key-press module 18 includes switch SW1, switch SW2, switch SW3 and switch SW4, and the first end connection for switching SW1 is blue The KEY0 feet of tooth module 12, the second end ground connection of SW1, the KEY1 feet of the first end connection bluetooth module 12 of SW2, the second of SW2 End ground connection switchs the KEY2 feet of the first end connection bluetooth module 12 of SW3, and the second end of SW3 is grounded, and switchs the first end of SW4 The KEY3 feet of bluetooth module 12, the second end ground connection of SW4 are connected, key-press module 18 is used for switching on and shutting down and function control, function control System includes volume adjustment, answers/refuse phone, switching song, pause, music etc., and user can pass through key-press module 18 carry out a variety of operations, and concrete function setting can be programmed to realize according to Master control chip U1.
State indicator module 19 includes Light-emitting diode LED 0, Light-emitting diode LED 1, resistance R1 and resistance R2, shines The first end connection bluetooth module 12 of diode (LED) 0, the first end of the second end connection resistance R1 of Light-emitting diode LED 0, electricity Hinder the second end ground connection of R1, the first end connection bluetooth module 12 of Light-emitting diode LED 1, the second end of Light-emitting diode LED 1 Connect the first end of resistance R2, the second end ground connection of resistance R2;State indicator module 19 can be used for carrying out low electricity warning, bluetooth State instruction and noise reduction state instruction etc., for example, state indicator module 19 can serve to indicate that active noise reduction bluetooth headset mesh Preceding state is connection or disconnected, and whether electricity is too low, and whether decrease of noise functions has been opened, herein for the display of LED light Being correspondingly arranged for state can also be other rational settings.
A kind of operation principle of active noise reduction bluetooth headset provided by the utility model is:When receiving calls or listen to sound When happy, the Bluetooth signal that external electronic device exports is received by Bluetooth antenna 11, Bluetooth signal is digital audio and video signals, bluetooth Module 12 receives digital audio and video signals and passes through I2S bus transfers to noise reduction module 14,13 acquisition noise of noise gathering module letter It number exports to noise reduction module 14, noise reduction module 14 is DSP noise reduction process device (Digital Signal Processor, number Signal processor), noise reduction module 14 will be converted to analog audio signal after the digital audio and video signals active noise reduction received and lead to again It crosses sound play device to play back, noise reduction module 14 further includes sound acquisition module 15, can pass through sound acquisition module Microphone acquires analog audio signal, and collected analog audio signal is converted to digital audio and video signals and passes through I2S buses Bluetooth module 12 is transferred to, then intelligent terminal is transferred to by Bluetooth antenna 11.
The technical solution of the utility model can carry out active noise reduction processing, and in bluetooth mould to the Bluetooth signal received Transmission mode between block and noise reduction module is I2S digital audio and video signals transmission modes, with good decrease of noise functions, and it is anti- Interference performance is strong, and voice signal loss is low, can effectively improve call or listen the sound quality of audio.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (10)

1. a kind of active noise reduction bluetooth headset, which is characterized in that including:
For receiving and emitting the Bluetooth antenna of Bluetooth signal;
It is connect with the Bluetooth antenna, for receiving the Bluetooth signal, and exports the bluetooth module of digital audio and video signals;
For the noise gathering module of acquisition noise signal;
It is connect with the bluetooth module and the noise gathering module, for receiving the digital audio and video signals, and by the number The noise reduction module of analog audio signal output is converted to after word audio signal active noise reduction;And
It is connect with the bluetooth module and the noise reduction module, for the electricity for the bluetooth module and noise reduction module power supply Source module.
2. active noise reduction bluetooth headset as described in claim 1, which is characterized in that the active noise reduction bluetooth headset is also Including being connect with the noise reduction module, the sound for receiving the analog audio signal of the noise reduction module output and playing plays Module.
3. active noise reduction bluetooth headset as described in claim 1, which is characterized in that the active noise reduction bluetooth headset is also Including being connect with the noise reduction module, for receiving the sound acquisition module of analog audio signal.
4. active noise reduction bluetooth headset as described in claim 1, which is characterized in that the bluetooth module and the noise reduction mould Pass through digital audio and video signals described in I2S bus transfers between block.
5. active noise reduction bluetooth headset as described in claim 1, which is characterized in that the bluetooth module and the noise reduction mould Pass through I2C bus transfer control commands between block.
6. active noise reduction bluetooth headset as described in claim 1, which is characterized in that the active noise reduction bluetooth headset is also Including being connect with the bluetooth module, for switching on and shutting down and the key-press module of function control.
7. active noise reduction bluetooth headset as described in claim 1, which is characterized in that the active noise reduction bluetooth headset is also Including the state indicator module being connect with the bluetooth module.
8. active noise reduction bluetooth headset as described in claim 1, which is characterized in that the active noise reduction bluetooth headset is also Including the charging interface for being used to connect with external charger.
9. active noise reduction bluetooth headset as claimed in claim 8, which is characterized in that the charging interface is USB interface, Type-C interfaces or Micro USB interfaces.
10. active noise reduction bluetooth headset as described in claim 1, which is characterized in that the bluetooth module and the noise reduction Module integrates on the same chip.
CN201721395522.1U 2017-10-26 2017-10-26 A kind of active noise reduction bluetooth headset Active CN207603853U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721395522.1U CN207603853U (en) 2017-10-26 2017-10-26 A kind of active noise reduction bluetooth headset

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721395522.1U CN207603853U (en) 2017-10-26 2017-10-26 A kind of active noise reduction bluetooth headset

Publications (1)

Publication Number Publication Date
CN207603853U true CN207603853U (en) 2018-07-10

Family

ID=62757125

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721395522.1U Active CN207603853U (en) 2017-10-26 2017-10-26 A kind of active noise reduction bluetooth headset

Country Status (1)

Country Link
CN (1) CN207603853U (en)

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Effective date of registration: 20180711

Address after: 1801B, East seat two, innovation and Technology Plaza, Tianan Digital City, Futian District, Shenzhen, Guangdong

Patentee after: Shenzhen YYu science and Technology Co., Ltd.

Address before: 22 floor, 141 Nanxiang Road, reed bamboo District, Taoyuan City, Taiwan, China

Patentee before: Zeng Zhongwen