CN112087688B - A noise reduction type environmentally friendly bluetooth headset and noise reduction method thereof - Google Patents
A noise reduction type environmentally friendly bluetooth headset and noise reduction method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000007613 environmental effect Effects 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000013500 data storage Methods 0.000 claims abstract description 5
- 230000005236 sound signal Effects 0.000 claims description 43
- 230000001133 acceleration Effects 0.000 claims description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
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- 229920001296 polysiloxane Polymers 0.000 abstract 2
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- 229910002027 silica gel Inorganic materials 0.000 description 9
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- 229920000747 poly(lactic acid) Polymers 0.000 description 2
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- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/105—Earpiece supports, e.g. ear hooks
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Abstract
本发明涉及一种降噪型环保蓝牙耳机及其降噪方法，降噪型环保蓝牙耳机包括主体壳体、耳挂、耳机盖板和耳塞，耳塞具有海绵环，海绵环的内部嵌设有硅胶环，硅胶环套设在扬声器外壳的外侧，其特征在于，主体壳体的内侧设有控制板、电源装置、数据存储器、蓝牙通信装置和北斗定位装置，主体壳体的侧边上设有耳机开关按键、音量调大按键、音量调小按键和定位按键，主体壳体的一个侧壁上设置有显示屏，耳机盖板的腔体内设有降噪装置及音频采集装置，扬声器外壳的内侧设有扬声器，降噪装置、音频采集装置和扬声器分别连接控制板，主体壳体、耳机盖板和扬声器外壳均为可降解材质制成。该蓝牙耳机不仅可以有效降噪，而且功能丰富且满足对于环保的要求。
The present invention relates to a noise reduction type environmentally friendly Bluetooth headset and a noise reduction method thereof, the noise reduction type environmentally friendly Bluetooth headset comprises a main body shell, an ear hook, an earphone cover plate and an earplug, the earplug has a sponge ring, a silicone ring is embedded in the sponge ring, and the silicone ring is sleeved on the outside of a speaker housing, characterized in that a control panel, a power supply device, a data storage device, a Bluetooth communication device and a Beidou positioning device are arranged on the inner side of the main body shell, an earphone switch button, a volume increase button, a volume decrease button and a positioning button are arranged on the side of the main body shell, a display screen is arranged on one side wall of the main body shell, a noise reduction device and an audio collection device are arranged in the cavity of the earphone cover plate, a speaker is arranged on the inner side of the speaker housing, the noise reduction device, the audio collection device and the speaker are respectively connected to the control panel, and the main body shell, the earphone cover plate and the speaker housing are all made of degradable materials. The Bluetooth headset can not only effectively reduce noise, but also has rich functions and meets the requirements for environmental protection.
Description
Technical Field
The invention relates to the field of headphones, in particular to a noise-reduction environment-friendly Bluetooth headphone and a noise reduction method thereof.
Background
Bluetooth headset is used as a necessary accessory for mobile phone users, and is more and more popular with people, especially sports lovers, and people can see outdoor sports while listening to music.
People wear current bluetooth headset behind the ear, through start bluetooth headset's switch and bluetooth function, can this bluetooth headset and the bluetooth communication between the mobile phone device, then carry out music appreciation and voice communication.
The existing Bluetooth earphone has the problems that the existing Bluetooth earphone is poor in sound insulation effect and cannot effectively reduce noise outside, so that a great amount of noise is doped in audio heard by a user when the user wears the earphone, and the hearing effect of the Bluetooth earphone is affected. The existing Bluetooth headset is single in function, and adverse effects of the abandoned Bluetooth headset on the environment are rarely considered, so that the environment protection concept cannot be integrated into the existing Bluetooth headset design.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a noise-reduction type environment-friendly Bluetooth headset aiming at the prior art.
The second technical problem to be solved by the invention is to provide a noise reduction method of a noise reduction type environment-friendly Bluetooth headset.
The invention solves the first technical problem by adopting the technical scheme that the noise-reduction environment-friendly Bluetooth headset comprises:
A main body housing;
an ear hook mounted on the main body housing;
The earphone cover plate is provided with a cavity and is fixed on the main body shell;
a speaker housing installed at one side of the main body housing;
The earplug is provided with a sponge ring, a silica gel ring is embedded in the sponge ring, and the silica gel ring is sleeved on the outer side of the loudspeaker shell;
The novel earphone is characterized in that a control board, a power supply device, a data memory, a Bluetooth communication device and a Beidou positioning device are arranged on the inner side of a main body shell, an earphone switch key, a volume increasing key, a volume decreasing key and a positioning key are arranged on the side edge of the main body shell, a display screen is arranged on one side wall of the main body shell, the control board is respectively connected with the power supply device, the data memory, the Bluetooth communication device, the Beidou positioning device, the earphone switch key, the volume increasing key, the volume decreasing key, the positioning key and the display screen, the power supply device is respectively connected with the Bluetooth communication device, the Beidou positioning device and the display screen, a noise reduction device is arranged in a cavity of an earphone cover plate and is respectively connected with the control board and the power supply device, the audio collection device is connected with the control board, a loudspeaker is arranged on the inner side of a loudspeaker shell and is respectively connected with the control board, the power supply device and the data memory, and the main body shell, the earphone cover plate and the loudspeaker shell are made of degradable materials.
In the improved environment-friendly Bluetooth headset, the earhook is of a circular arc structure made of a silica gel material, and a spherical bulge is formed at the position of the earhook, which is in contact with the human ear.
Further, in the noise reduction type environment-friendly Bluetooth headset, an LED lamp and a temperature sensor are arranged on the outer side of the headset cover plate, the LED is respectively connected with a control board and a power supply device, and the temperature sensor is connected with the control board and a display screen.
In the improved environment-friendly Bluetooth headset, an annular silica gel sheet made of silica gel material is arranged on one side of the main body shell, which is used for fixing the headset cover plate.
Still further improve, in noise reduction formula environmental protection bluetooth headset, be provided with USB data mouth and acceleration sensor on a lateral wall of main part casing, this USB data mouth is connected control panel, data memory and power supply unit respectively, and acceleration sensor connects the control panel.
Preferably, in the noise reduction type environment friendly bluetooth headset, the power supply device is a rechargeable battery.
In the improved environment-friendly Bluetooth headset, fluorescent materials are coated on the outer side walls of the main body shell, the ear hook and the headset cover plate.
In the noise reduction type environment-friendly Bluetooth headset, the main body shell, the headset cover plate and the loudspeaker shell are made of polylactic acid materials.
The technical scheme adopted for solving the second technical problem is that the noise reduction method of the noise reduction type environment-friendly Bluetooth headset is characterized by comprising the following steps of 1-7:
Step 1, acquiring an environmental audio signal at the outer side of an earphone cover plate by using an audio acquisition device in a preset time period to obtain an environmental audio signal sequence;
step 2, the control board processes the obtained environmental audio signal sequence to obtain an external sound sequence number subsequence and an external noise signal subsequence;
Step 3, the control board calculates and obtains an external noise signal characteristic parameter set according to the obtained external noise signal subsequence;
Step 4, the acceleration sensor collects acceleration data of the current noise reduction type environment-friendly Bluetooth headset within the preset time period to obtain an acceleration data sequence;
Step 5, the control board processes and obtains a noise reduction signal characteristic parameter set for counteracting the current external noise signal according to the external noise signal characteristic parameter set and the acceleration data sequence, wherein the noise reduction signal characteristic parameter set comprises an amplitude characteristic parameter and a phase characteristic parameter for counteracting the current external noise signal, and the phase characteristic parameter is consistent with the phase of the current external noise signal;
Step 6, the control board sends the noise reduction signal characteristic parameter set to a noise reduction device;
and 7, forming a noise reduction signal by the noise reduction device according to the received noise reduction signal characteristic parameter set, and sending the noise reduction signal to a loudspeaker.
Further, in the noise reduction method of the noise reduction type environment-friendly bluetooth headset, in step 5, the control board processes the external noise signal characteristic parameter set and the acceleration data sequence according to the following steps S1 to S6 to obtain a noise reduction signal characteristic parameter set for canceling the current external noise signal:
step S1, the control board judges the motion state of a wearer of the noise reduction type environment-friendly Bluetooth headset according to the acceleration data sequence:
when the wearer is in a motion state, the control panel commands the audio acquisition device to acquire the current environment audio signal outside the current earphone cover plate again, and the step S2 is carried out;
Step S2, the control board obtains the amplitude value of the current environmental audio signal according to the current environmental audio signal, and the step S3 is carried out;
step S3, the control board obtains the average amplitude value of the external sound signal corresponding to the external sound sequence number subsequence according to the external sound sequence number subsequence, and the step S4 is carried out;
step S4, the control board makes judgment processing according to the amplitude value of the obtained current environment audio signal and the average amplitude value of the obtained external sound signal:
when the amplitude value of the obtained current environment audio signal is larger than the average amplitude value of the obtained external sound signal, the step S5 is carried out, otherwise, the step S6 is carried out;
Step S5, the control board takes the amplitude value of the current environment audio signal as an amplitude value characteristic parameter for counteracting the current external noise signal, takes the amplitude value characteristic parameter as a noise reduction signal characteristic parameter of a noise reduction signal characteristic parameter set, and shifts to step 6;
and S6, the control board takes the average amplitude value of the obtained external sound signal as an amplitude value characteristic parameter for counteracting the current external noise signal, takes the amplitude value characteristic parameter as one noise reduction signal characteristic parameter of a noise reduction signal characteristic parameter set, and shifts to the step 6.
Compared with the prior art, the invention has the advantages that:
Firstly, set up noise reduction device and set up audio acquisition device in the earphone apron of bluetooth headset in the earphone apron outside, and set up the control panel of connecting and controlling this noise reduction device in bluetooth headset's main part casing, can make noise reduction device start the work of making an uproar according to the instruction of control panel, produce the noise reduction signal that can offset external environment noise (the reverse phase sound wave that equals with external environment noise), thereby reduce the environmental noise that enters into speaker department with the mode of initiatively making an uproar, improve the normal audio playback effect and the definition of speaker, satisfy people and utilize bluetooth headset to enjoy pure music or realize the demand of speech communication.
Secondly, through increasing data storage, big dipper positioner, display screen and USB data port of setting up on the bluetooth headset of this invention, not only can enrich bluetooth headset's function, but also can satisfy the user and in outdoor location needs and according to the requirement of importing audio data to bluetooth headset in the actual demand.
In addition, the main body shell, the earphone cover plate and the loudspeaker shell of the Bluetooth earphone are made of degradable materials, so that the damage of the discarded Bluetooth earphone to the environment can be reduced to a great extent, and the Bluetooth earphone meets the requirement of environmental protection.
Finally, the Bluetooth headset also adopts a special noise reduction processing method according to the need, and realizes the adjustment of noise reduction signal characteristic parameters of the noise reduction signals by utilizing the collected environmental audio signals of the external environment and the acceleration data collected by the acceleration sensor, thereby more effectively reducing the noise signals, improving the audio quality and audio definition of the Bluetooth headset when playing normal audio or voice communication, and meeting the requirement of users on high-quality audio of the Bluetooth headset.
Drawings
Fig. 1 is a schematic structural diagram of a noise reduction type environment-friendly bluetooth headset in this embodiment;
fig. 2 is a schematic connection diagram of main components in the noise reduction type environment-friendly bluetooth headset shown in fig. 1;
fig. 3 is a schematic flow chart of a noise reduction method of the noise reduction type environment-friendly bluetooth headset in the present embodiment.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 and 2, the noise reduction type environment-friendly bluetooth headset in this embodiment includes:
a main body case 1;
The ear hook 2 is detachably arranged on the main body shell 1, the ear hook 2 is of a circular arc structure made of a silica gel material, and a spherical bulge 20 is formed at a position which is positioned on the ear hook 2 and is contacted with the human ear;
An earphone cover plate 3 having a cavity, the earphone cover plate 3 being fixed to the main body case 1;
a speaker housing 4 mounted on one side of the main body case 1;
Earplug 5, have sponge ring 51, the inside of sponge ring 51 inlays and is equipped with the silica gel ring 52, and the outside at speaker housing 4 is established to the silica gel ring 52 cover, wherein:
A control board 601, a power supply device 602, a data memory 603, a Bluetooth communication device 604 and a Beidou positioning device 605 are arranged on the inner side of the main body shell 1, the power supply device 602 adopts a chargeable battery, an earphone switch button 606, a volume up button 607, a volume down button 608 and a positioning button 609 are arranged on the side edge of the main body shell 1, a silica gel sleeve is sleeved on each of the earphone switch button 606, the volume up button 607, the volume down button 608 and the positioning button 609, a display screen 610 is arranged on one side wall of the main body shell 1, the control board 601 is respectively connected with the power supply device 602, the data memory 603, the Bluetooth communication device 604, the Beidou positioning device 605, the earphone switch button 606, the volume up button 607, the volume down button 608, the positioning button 609 and the display screen 610, the power supply device 602 is respectively connected with the Bluetooth communication device 604, the Beidou positioning device 605 and the display screen 610, a USB data port 616 and an acceleration sensor 617 are also arranged on one side wall of the main body shell 1, the USB data port 616 is respectively connected with the control board 601, the data memory 603 and the power supply device 602, and the acceleration sensor 617 is connected with the control board 601;
The cavity of the earphone cover plate 3 is internally provided with a noise reduction device 611 and an audio acquisition device 612 for acquiring environmental audio signals outside the earphone cover plate, wherein the noise reduction device 611 is respectively connected with a control board 601 and a power supply device 602, the audio acquisition device 612 is connected with the control board 601, the outside of the earphone cover plate 3 is provided with an LED lamp 614 and a temperature sensor 615, the LED lamp 614 is respectively connected with the control board 601 and the power supply device 602, and the temperature sensor 615 is connected with the control board 601 and a display screen 610;
The inside of the speaker housing 4 is provided with a speaker 613, the speaker 613 is respectively connected with a control board 601, a power supply device 602 and a data storage 603, the main body housing 1, the earphone cover plate 3 and the speaker housing 4 are made of degradable materials, and fluorescent materials are coated on the outer side walls of the main body housing 1, the ear hook 2 and the earphone cover plate 3.
For example, in this embodiment, the main body casing 1, the earphone cover 3, and the speaker housing 4 are made of degradable materials such as polylactic acid. So, even if the bluetooth headset of this embodiment is abandoned, owing to main part casing 1, earphone apron 3 and speaker shell 4 all have adopted degradable material to make, just so can reduce the bluetooth headset who abandons to a great extent and to the destruction of environment, accord with the requirement of environmental protection.
In order to further enhance the noise reduction effect, in the noise reduction type environment-friendly bluetooth headset of this embodiment, a ring-shaped silica gel sheet 10 made of silica gel material is further provided on one side of the main body housing 1 where the headset cover plate 3 is fixed. When the Bluetooth headset of the embodiment is worn by a user, the annular silica gel sheet 10 can be tightly attached to the ear of the user, so that external noise is reduced from entering the headset by utilizing the tightly attached arrangement between the annular silica gel sheet and the ear, and the effect of further enhancing noise reduction is achieved.
In the noise reduction type environment-friendly bluetooth headset of this embodiment, after a user wears the bluetooth headset, the bluetooth headset can be started to be in a working state by pressing the headset switch button 606, the bluetooth communication device 604 starts to work and enables the bluetooth communication device to establish bluetooth communication with a mobile phone terminal of the user, the control board 601 instructs the audio acquisition device 612 to acquire an environment audio signal outside the headset cover plate and instructs the noise reduction device 611 to start a noise reduction processing operation, so that the noise reduction device 611 generates a noise reduction signal (an inverted sound wave equal to the external environment noise) capable of canceling the current external noise, and then sends the generated noise reduction signal to the speaker 613 to realize effective noise reduction, thereby improving the visual effect of the whole bluetooth headset;
The user presses the volume up button 607 or the volume down button 608 according to the need to correspondingly increase or decrease the volume of the played audio (music or call), and when the user needs to acquire the current position, he presses the positioning button 609 again, so that the control board 601 instructs the Beidou positioning device 605 to acquire the current position and display the current position information on the display screen 610 of the Bluetooth headset according to the need, and the user can observe the temperature condition of the current position acquired by the temperature sensor 615 through the display screen 610, so that the functions of the Bluetooth headset are enriched through the position display function and the temperature display function. In addition, the user can not only import audio data into the data memory 603 via the USB data port 616 of the headset, but also play or display imported related data through the speaker 613 by the display screen 610. In addition, since the LED lamp 614 is provided at the outer side of the earphone cover plate 3, it is convenient to emit light in the night environment, thereby reminding pedestrians and vehicles passing around. Of course, the fluorescent material coated on the outer side walls of the main body shell 1, the ear hook 2 and the earphone cover plate 3 can further enhance the luminous prompting effect of the whole Bluetooth earphone, has a good prompting effect, and is convenient for users to find the carelessly lost Bluetooth earphone in a dark light environment.
The spherical protrusions 20 arranged on the ear hook 2 can increase the friction force between the ear hook and the human ear, and prevent the ear hook from sliding on the human ear.
In addition, referring to fig. 3, the embodiment also provides a noise reduction method of the noise reduction type environment-friendly bluetooth headset. Specifically, the noise reduction method of the noise reduction type environment-friendly Bluetooth headset comprises the following steps 1-7:
Step 1, an audio acquisition device 612 is utilized to acquire an environmental audio signal at the outer side of the earphone cover plate in a preset time period, so as to obtain an environmental audio signal sequence;
step 2, the control board 601 processes and obtains an external sound sequence number subsequence and an external noise signal subsequence according to the obtained environmental audio signal sequence;
Step 3, the control board 601 calculates and obtains an external noise signal characteristic parameter set according to the external noise signal subsequence;
step 4, the acceleration sensor 617 collects acceleration data of the current noise reduction type environment-friendly Bluetooth headset within the preset time period to obtain an acceleration data sequence;
Step 5, the control board 601 processes and obtains a noise reduction signal characteristic parameter set for counteracting the current external noise signal according to the external noise signal characteristic parameter set and the acceleration data sequence, wherein the noise reduction signal characteristic parameter set comprises an amplitude characteristic parameter and a phase characteristic parameter for counteracting the current external noise signal, and the phase characteristic parameter is consistent with the phase of the current external noise signal;
step 6, the control board 601 sends the noise reduction signal feature parameter set to the noise reduction device 612;
In step 7, the noise reducer 612 forms a noise reduction signal according to the received noise reduction signal feature parameter set, and sends the noise reduction signal to the speaker 613 to cancel the noise signal at the speaker 613.
Of course, in step 5 of this embodiment, the control board 601 processes the external noise signal feature parameter set and the acceleration data sequence according to the following steps S1 to S6 to obtain a noise reduction signal feature parameter set for canceling the current external noise signal:
Step S1, the control board 601 determines the motion state of the wearer of the noise reduction type environment-friendly bluetooth headset according to the acceleration data sequence:
When the wearer is in a motion state, the control board 601 instructs the audio acquisition device 612 to acquire the current environmental audio signal outside the current earphone cover board again, and the step S2 is carried out;
Step S2, the control board 601 obtains the amplitude value of the current environmental audio signal according to the current environmental audio signal, and the step S3 is carried out;
Step S3, the control board 601 obtains the average amplitude value of the external sound signal corresponding to the external sound sequence number subsequence according to the external sound sequence number subsequence, and the step S4 is performed;
step S4, the control board 601 performs judgment processing according to the obtained amplitude value of the current environmental audio signal and the obtained average amplitude value of the external sound signal:
when the amplitude value of the obtained current environment audio signal is larger than the average amplitude value of the obtained external sound signal, the step S5 is carried out, otherwise, the step S6 is carried out;
Step S5, the control board 601 takes the amplitude value of the current environmental audio signal as an amplitude value characteristic parameter for counteracting the current external noise signal, takes the amplitude value characteristic parameter as a noise reduction signal characteristic parameter of a noise reduction signal characteristic parameter set, and shifts to step 6;
In step S6, the control board 601 takes the average amplitude value of the obtained external sound signal as an amplitude value characteristic parameter for canceling the current external noise signal, and takes the amplitude value characteristic parameter as a noise reduction signal characteristic parameter of the noise reduction signal characteristic parameter set, and proceeds to step S6.
While the preferred embodiments of the present invention have been described in detail, it is to be clearly understood that the same may be varied in many ways by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A noise reduction method of noise reduction type environment-friendly Bluetooth headset, the noise reduction type environment-friendly Bluetooth headset comprises:
a main body case (1);
an ear hook (2) mounted on the main body housing (1);
The earphone cover plate (3) is provided with a cavity, and the earphone cover plate (3) is fixed on the main body shell (1);
A speaker housing (4) mounted on one side of the main body case (1);
The earplug (5) is provided with a sponge ring (51), a silica gel ring (52) is embedded in the sponge ring (51), and the silica gel ring (52) is sleeved on the outer side of the loudspeaker shell (4);
The inside of the main body shell (1) is provided with a control board (601), a power supply device (602), a data memory (603), a Bluetooth communication device (604) and a Beidou positioning device (605), the side edge of the main body shell (1) is provided with an earphone switch key (606), a volume-up key (607), a volume-down key (608) and a positioning key (609), one side wall of the main body shell (1) is provided with a display screen (610), the control board (601) is respectively connected with the power supply device (602), the data memory (603), the Bluetooth communication device (604), the Beidou positioning device (605), the earphone switch key (606), the volume-up key (607), the volume-down key (608), the positioning key (609) and the display screen (610), the power supply device (602) is respectively connected with the Bluetooth communication device (604), the Beidou positioning device (605) and the display screen (610), the cavity of the earphone cover plate (3) is internally provided with a noise reduction device (611) and an audio acquisition device (612) for acquiring the environmental audio signals outside the earphone cover plate, the noise reduction device (611) is respectively connected with the control board (601) and the power supply device (602), the audio device (601) is connected with the loudspeaker (613) and the loudspeaker (613) arranged on the inner side of the loudspeaker (4), the loudspeaker (613) is respectively connected with the control board (601), the power supply device (602) and the data storage device (603), wherein the main body shell (1), the earphone cover plate (3) and the loudspeaker shell (4) are made of degradable materials, one side wall of the main body shell (1) is provided with a USB data port (616) and an acceleration sensor (617), and the USB data port (616) is respectively connected with the control board (601), the data storage device (603) and the power supply device (602), and the acceleration sensor (617) is connected with the control board (601);
The method is characterized by comprising the following steps 1-7:
Step 1, acquiring an environmental audio signal at the outer side of an earphone cover plate by using an audio acquisition device in a preset time period to obtain an environmental audio signal sequence;
step 2, the control board processes the obtained environmental audio signal sequence to obtain an external sound sequence number subsequence and an external noise signal subsequence;
Step 3, the control board calculates and obtains an external noise signal characteristic parameter set according to the obtained external noise signal subsequence;
Step 4, the acceleration sensor collects acceleration data of the current noise reduction type environment-friendly Bluetooth headset within the preset time period to obtain an acceleration data sequence;
Step 5, the control board processes and obtains a noise reduction signal characteristic parameter set for counteracting the current external noise signal according to the external noise signal characteristic parameter set and the acceleration data sequence, wherein the noise reduction signal characteristic parameter set comprises an amplitude characteristic parameter and a phase characteristic parameter for counteracting the current external noise signal, and the phase characteristic parameter is consistent with the phase of the current external noise signal;
Step 6, the control board sends the noise reduction signal characteristic parameter set to a noise reduction device;
Step 7, the noise reduction device forms a noise reduction signal according to the received noise reduction signal characteristic parameter set, and sends the noise reduction signal to a loudspeaker;
In step 5, the control board processes the external noise signal characteristic parameter set and the acceleration data sequence according to the following steps S1 to S6 to obtain a noise reduction signal characteristic parameter set for canceling the current external noise signal:
Step S1, the control board judges the motion state of a wearer of the noise reduction type environment-friendly Bluetooth headset according to the acceleration data sequence:
When the wearer is in a motion state, the control panel commands the audio acquisition device to acquire the current environment audio signal outside the current earphone cover plate again, and the step S2 is carried out;
Step S2, the control board obtains the amplitude value of the current environmental audio signal according to the current environmental audio signal, and the step S3 is carried out;
Step S3, the control board obtains the average amplitude value of the external sound signal corresponding to the external sound sequence number subsequence according to the external sound sequence number subsequence, and the step S4 is carried out;
step S4, the control board makes judgment processing according to the amplitude value of the obtained current environment audio signal and the average amplitude value of the obtained external sound signal:
when the amplitude value of the obtained current environment audio signal is larger than the average amplitude value of the obtained external sound signal, the step S5 is carried out, otherwise, the step S6 is carried out;
step S5, the control board takes the amplitude value of the current environment audio signal as the characteristic parameter of the amplitude value for counteracting the current external noise signal, takes the characteristic parameter of the amplitude value as one noise reduction signal characteristic parameter of the noise reduction signal characteristic parameter set, and shifts to step 6;
Step S6, the control board takes the average amplitude value of the obtained external sound signal as the characteristic parameter of the amplitude value for counteracting the current external noise signal, takes the characteristic parameter of the amplitude value as one noise reduction signal characteristic parameter of the noise reduction signal characteristic parameter set, and shifts to step S6.
Priority Applications (1)
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| CN103873975B (en) * | 2014-03-20 | 2016-11-23 | 努比亚技术有限公司 | A kind of methods, devices and systems realizing bluetooth earphone noise reduction |
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| CN109151648A (en) * | 2018-10-30 | 2019-01-04 | 歌尔科技有限公司 | A kind of dynamic regulating method of earpiece volume, device and wireless headset |
| CN110830862A (en) * | 2019-10-10 | 2020-02-21 | 广东思派康电子科技有限公司 | A noise-cancelling earphone with adaptive noise reduction |
| CN111586522B (en) * | 2020-05-20 | 2022-04-15 | 歌尔科技有限公司 | Earphone noise reduction method, earphone noise reduction device, earphone and storage medium |
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