CN201383326Y - Noise reduction device of mobile phone - Google Patents
Noise reduction device of mobile phone Download PDFInfo
- Publication number
- CN201383326Y CN201383326Y CN200920070777U CN200920070777U CN201383326Y CN 201383326 Y CN201383326 Y CN 201383326Y CN 200920070777 U CN200920070777 U CN 200920070777U CN 200920070777 U CN200920070777 U CN 200920070777U CN 201383326 Y CN201383326 Y CN 201383326Y
- Authority
- CN
- China
- Prior art keywords
- mobile phone
- noise
- electrically connected
- noise reduction
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Telephone Set Structure (AREA)
- Telephone Function (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a noise reduction device of a mobile phone, comprising a mobile phone noise-reduction unit, a single-pole double-throw switch and a noise sampling module, wherein the mobile phone noise-reduction unit is electrically connected with the single-pole double-throw switch which is electrically connected with a noise collection module, and the noise collection module is an earphone of the mobile phone and a loudspeaker of the mobile phone; the mobile phone noise-reduction unit is also electrically connected with a baseband chip of the mobile phone, the earphone of the mobile phone and the loudspeaker of the mobile phone respectively form two circuit noise-reduction control loops with the baseband chip of the mobile phone and the mobile phone noise-reduction unit by the switching of the single-pole double-throw switch. By adopting the utility model, an MIC does not need to be additionally arranged to realize noise reduction of the mobile phone.
Description
Technical field
The utility model relates to denoising device, particularly a kind of by the existing loudspeaker of mobile phone itself and earphone as external context noise pick device, eliminate the mobile phone denoising device of mobile phone background noise.
Background technology
The use of existing mobile phone has certain requirement to background noise.Under strong noisy environment, the mobile phone noise is very big, and user experience is poor.Existing noise reduction technique relatively more commonly used generally needs an other MIC (microphone) to be used for picking up environmental noise.But owing to be subjected to the restriction of mobile phone volume, add that present mobile phone is more and more littler, the then above-mentioned generally difficulty relatively of method that a MIC picks up environmental noise that on mobile phone, installs additional in addition again.
The utility model content
The technical problems to be solved in the utility model is the defective that installs a difficult realization noise reduction of MIC in the existing mobile phone in addition additional in order to overcome, provide a kind of and both eliminated or reduce the mobile phone background noise, do not need to install in addition simultaneously the mobile phone denoising device that MIC (microphone) can realize the mobile phone noise reduction.
The utility model solves above-mentioned technical matters by following technical proposals: a kind of mobile phone denoising device, its characteristics are, it comprises a mobile phone noise reduction unit, a single-pole double-throw switch (SPDT) and a noise acquisition module, wherein, this mobile phone noise reduction unit is electrically connected with this single-pole double-throw switch (SPDT), this single-pole double-throw switch (SPDT) is electrically connected with this noise acquisition module, and this noise acquisition module is a handset earphone and a mobile phone loudspeaker; This mobile phone noise reduction unit also is electrically connected with a mobile phone baseband chip, and by the switching of this single-pole double-throw switch (SPDT), this handset earphone and mobile phone speaker form two-way noise reduction control loop with this mobile phone base band chip, this mobile phone noise reduction unit respectively.
Preferably, this single-pole double-throw switch (SPDT) has two switch contacts, and the one switch contact is electrically connected with this mobile phone speaker, and its another switch contact is electrically connected with this handset earphone.
Preferably, this mobile phone base band chip contains a switch control module of the switch contact switching of this single-pole double-throw switch (SPDT) of control.
Preferably, this mobile phone noise reduction unit also comprises an anti-phase module and an output module.
Preferably, also be electrically connected an output amplification module between this anti-phase module and output module.
Preferably, this noise acquisition module is electrically connected a filtration module with this anti-phase intermodule, and this filtration module is electrically connected an input amplification module.
Preferably, this noise acquisition module is a head-wearing mobile phone earphone that is electrically connected with this mobile phone noise reduction unit.
Preferably, this mobile phone noise reduction unit is a digital signal processor.
Preferably, be equipped with digital voice interface on this mobile phone noise reduction unit and this mobile phone base band chip.
Positive progressive effect of the present utility model is: during cellphone subscriber's conversation, mobile phone speaker generally leaves unused, the utility model uses mobile phone speaker to pick up environmental noise as MIC, and install the MIC of special acquisition noise no longer in addition additional, both solve mobile phone noise reduction problem, do not influenced the normal use of mobile phone speaker or handset earphone again.
Description of drawings
Fig. 1 is the structured flowchart of the utility model one preferred embodiment.
Embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.
As shown in Figure 1, the utility model provides a kind of mobile phone denoising device, it comprises a mobile phone noise reduction unit, a single-pole double-throw switch (SPDT) 2 and a noise acquisition module 3 of electrical connection, the mobile phone noise reduction unit is electrically connected with single-pole double-throw switch (SPDT) 2, wherein, noise acquisition module 3 can be the handset earphone 32 and the mobile phone speaker 31 of mobile phone itself.The mobile phone noise reduction unit also is electrically connected with mobile phone base band chip 4, single-pole double-throw switch (SPDT) 2 has two and is used for switch contact A, the B that circuit switches, a switch contact B of single-pole double-throw switch (SPDT) 2 is electrically connected with mobile phone speaker 31, another switch contact A of single-pole double-throw switch (SPDT) 2 is electrically connected with handset earphone 32, by the switching of single-pole double-throw switch (SPDT) 2, just can make handset earphone 32 and mobile phone speaker 31 form two-way noise reduction control loop with mobile phone base band chip 4, this mobile phone noise reduction unit respectively like this.Switch in order to control the connection of single-pole double-throw switch (SPDT) 2 between the two-way Dolby circuit, mobile phone base band chip 4 contains a single-pole double-throw switch (SPDT) control module 41.By this control module 41, the circuit of mobile phone base band chip 4 may command single-pole double-throw switch (SPDT)s 2 switches.The switch control functions of 41 pairs of single-pole double-throw switch (SPDT)s 2 of control module of mobile phone base band chip 4 can realize by existing software programming technique, not give unnecessary details at this.The mobile phone noise reduction unit also is electrically connected a head-wearing mobile phone earphone 33.
Be equipped with on mobile phone noise reduction unit and this mobile phone base band chip 4 and be used for the digital voice interface of transmission signals.The mobile phone noise reduction unit also comprises an anti-phase module 11 and an output module 12 of electrical connection, and 12 of anti-phase module 11 and output modules also are electrically connected an output amplification module that is used for signal amplification and output.Wherein, anti-phase module 11 can be used for producing the inferior sound-source signal opposite with the noise signal phase place of gathering, and output module 12 can be used for exporting the inferior sound-source signal that anti-phase module produces.Can also be electrically connected a filtration module that is used for elimination clutter noise signal between noise acquisition module 3 and the anti-phase module 11, filtration module also can be electrically connected an input amplification module that is used for amplification input signal.Mobile phone noise reduction unit among the utility model embodiment can be with above-mentioned anti-phase module 11, output module 12, output amplification module, filtration module and the integrated digital signal processor 1 of input amplification module.Mobile phone base band chip 4 is the prior art part with the control technology that is electrically connected between the digital signal processor 1 in the present embodiment, does not repeat them here.
The utility model is by single-pole double-throw switch (SPDT) 2 of adding before Dolby circuit, the switching between mobile phone speaker 31 and handset earphone 32, thus guarantee that mobile phone all can use noise reduction function when hand-free call and normal talking.Be in normal hand earphone 32 call modes, hand-free call pattern and use the noise reduction process under headphone 33 call modes to be described below respectively with regard to mobile phone below:
When (1) mobile phone is in the normal talking pattern:
Switch single-pole double-throw switch (SPDT) 2 this moment and switch to the switch contact B that connects mobile phone speaker 31, pick up environmental noise with mobile phone speaker 31 as MIC this moment.The environmental noise that mobile phone speaker 31 picks up is delivered to digital signal processor 1 by single-pole double-throw switch (SPDT) 2, carries out noise abatement together through the signal that receives in processing such as time-delay, filtering and handset earphone 32 and the MIC and handles the function of realization noise abatement.
When (2) using hands-free (being mobile phone speaker 31) conversation
This moment, so single-pole double-throw switch (SPDT) 2 is switched to the contact A that links to each other with handset earphone 32, use handset earphone 32 picked up environmental noise as MIC because mobile phone speaker 31 is wanted sounding.The environmental noise that handset earphone 32 picks up is delivered to digital signal processor 1 by single-pole double-throw switch (SPDT) 2, carries out noise abatement together through the signal that receives in handset earphone and the MIC32 under processing such as time-delay, filtering and the normal talking and handles the function of realization noise abatement.
When (3) using headphone 33 conversations
Can use handset earphone 32 or mobile phone speaker 31 to pick up environmental noise this moment.Because the sensitivity of handset earphone 32 than the height of mobile phone speaker 31, so single-pole double-throw switch (SPDT) 2 can be switched to switch contact A, uses handset earphone 32 as the MIC that extracts noise.
The utility model is by installing the mobile phone noise reduction unit that has a single-pole double-throw switch (SPDT) 2 additional in mobile phone, make 31 of mobile phone base band chip 4 and handset earphone 32 and mobile phone speakers, form two-way noise abatement control circuit under normal talking and the hand-free call, thereby when hand-free call and normal talking, all can realize decrease of noise functions.
Though more than described embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these embodiments.Therefore, protection domain of the present utility model is limited by appended claims.
Claims (9)
1, a kind of mobile phone denoising device, it is characterized in that, it comprises a mobile phone noise reduction unit, a single-pole double-throw switch (SPDT) and a noise acquisition module, wherein, this mobile phone noise reduction unit is electrically connected with this single-pole double-throw switch (SPDT), this single-pole double-throw switch (SPDT) is electrically connected with this noise acquisition module, and this noise acquisition module is a handset earphone and a mobile phone loudspeaker; This mobile phone noise reduction unit also is electrically connected with a mobile phone baseband chip, and by the switching of this single-pole double-throw switch (SPDT), this handset earphone and mobile phone speaker form two-way noise reduction control loop with this mobile phone base band chip, this mobile phone noise reduction unit respectively.
2, mobile phone denoising device as claimed in claim 1 is characterized in that, this single-pole double-throw switch (SPDT) has two switch contacts, and the one switch contact is electrically connected with this mobile phone speaker, and its another switch contact is electrically connected with this handset earphone.
3, mobile phone denoising device as claimed in claim 1 is characterized in that, this mobile phone base band chip contains a switch control module of the switch contact switching of this single-pole double-throw switch (SPDT) of control.
4, mobile phone denoising device as claimed in claim 1 is characterized in that, this mobile phone noise reduction unit also comprises an anti-phase module and an output module.
5, mobile phone denoising device as claimed in claim 4 is characterized in that, also is electrically connected an output amplification module between this anti-phase module and output module.
6, mobile phone denoising device as claimed in claim 4 is characterized in that, this noise acquisition module is electrically connected a filtration module with this anti-phase intermodule, and this filtration module is electrically connected an input amplification module.
7, mobile phone denoising device as claimed in claim 1 is characterized in that, this noise acquisition module is a head-wearing mobile phone earphone that is electrically connected with this mobile phone noise reduction unit.
8, mobile phone denoising device as claimed in claim 1 is characterized in that, this mobile phone noise reduction unit is a digital signal processor.
9, as any described mobile phone denoising device in the claim 1 to 8, it is characterized in that, be equipped with digital voice interface on this mobile phone noise reduction unit and this mobile phone base band chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920070777U CN201383326Y (en) | 2009-04-21 | 2009-04-21 | Noise reduction device of mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920070777U CN201383326Y (en) | 2009-04-21 | 2009-04-21 | Noise reduction device of mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201383326Y true CN201383326Y (en) | 2010-01-13 |
Family
ID=41526797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920070777U Expired - Fee Related CN201383326Y (en) | 2009-04-21 | 2009-04-21 | Noise reduction device of mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201383326Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011113341A1 (en) * | 2010-03-18 | 2011-09-22 | 华为终端有限公司 | Audio apparatus capable of noise reduction and mobile telephone capable of noise reduction |
| CN102291643A (en) * | 2011-08-03 | 2011-12-21 | 启攀微电子（上海）有限公司 | Noise reduction earphone interface structure |
| CN104380698A (en) * | 2014-04-10 | 2015-02-25 | 华为终端有限公司 | Verbal system, and switching method and device which are applied to verbal system |
| CN104967964A (en) * | 2015-05-29 | 2015-10-07 | 广东欧珀移动通信有限公司 | Terminal microphone fault processing apparatus, method and terminal |
-
2009
- 2009-04-21 CN CN200920070777U patent/CN201383326Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011113341A1 (en) * | 2010-03-18 | 2011-09-22 | 华为终端有限公司 | Audio apparatus capable of noise reduction and mobile telephone capable of noise reduction |
| CN102291643A (en) * | 2011-08-03 | 2011-12-21 | 启攀微电子（上海）有限公司 | Noise reduction earphone interface structure |
| CN102291643B (en) * | 2011-08-03 | 2014-03-12 | 启攀微电子（上海）有限公司 | Noise reduction earphone interface structure |
| CN104380698A (en) * | 2014-04-10 | 2015-02-25 | 华为终端有限公司 | Verbal system, and switching method and device which are applied to verbal system |
| WO2015154282A1 (en) * | 2014-04-10 | 2015-10-15 | 华为终端有限公司 | Call device and switching method and device applied thereto |
| CN104967964A (en) * | 2015-05-29 | 2015-10-07 | 广东欧珀移动通信有限公司 | Terminal microphone fault processing apparatus, method and terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104521247B (en) | Bluetooth headset hearing aid and anti-noise method and apparatus | |
| CN107864441B (en) | Bluetooth chip with hearing aid function, bluetooth headset and wireless hearing aid system | |
| CN202602769U (en) | Conversation type electronic product with echo inhibition function | |
| CN104092801A (en) | Intelligent terminal call noise reduction method and intelligent terminal | |
| CN104661158A (en) | Stereophone, terminal and audio signal processing method of stereophone and terminal | |
| CN102946493A (en) | Call background noise adjusting method for mobile terminal | |
| CN102111468A (en) | Denoising calling mobile phone and method thereof | |
| CN101873363A (en) | Method and terminal for restraining noise by using double microphones | |
| CN201383326Y (en) | Noise reduction device of mobile phone | |
| CN101827146A (en) | Device with terminal communication noise suppression function, method and communication terminal | |
| CN107864415A (en) | Audio amplifier and audio frequency apparatus share the control method and device of microphone | |
| KR101568301B1 (en) | Method and apparatus for improving audio channel cross talk in portable terminal | |
| CN102291643B (en) | Noise reduction earphone interface structure | |
| CN203788341U (en) | Dustproof earplug and mobile terminal | |
| CN201919140U (en) | Bluetooth headset | |
| CN201199709Y (en) | Mobile communication terminal with function of removing noise | |
| CN102970396A (en) | Audio processing circuit and communication terminal | |
| CN201717926U (en) | Active denoising system | |
| CN210444310U (en) | Telephone system and noise elimination module of telephone | |
| CN114125616B (en) | Low-power consumption method and device of wireless earphone, wireless earphone and readable storage medium | |
| CN204993481U (en) | Mobile terminal | |
| CN208386887U (en) | A kind of bluetooth earplug | |
| CN209358622U (en) | Echo suppression circuit and call class of electronic devices | |
| CN102340565A (en) | De-noising assembly | |
| CN215222474U (en) | Earphone set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20130421 |