CN102780947B - Reduce system and the method thereof of portable electric device recording noise - Google Patents
Reduce system and the method thereof of portable electric device recording noise Download PDFInfo
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- CN102780947B CN102780947B CN201110126337.3A CN201110126337A CN102780947B CN 102780947 B CN102780947 B CN 102780947B CN 201110126337 A CN201110126337 A CN 201110126337A CN 102780947 B CN102780947 B CN 102780947B
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Abstract
The invention discloses a kind of system and the method thereof that reduce portable electric device recording noise.The system of this reduction portable electric device recording noise comprises front video camera, rear video camera, microphone array and Sound Processor Unit.This front video camera is the image obtaining this portable electric device front; This rear video camera is the image obtaining this portable electric device rear; This microphone array receives message; This Sound Processor Unit is coupled to this microphone array, during in order to be by this front video camera acquisition when image, eliminate the noise coming from the rear of this portable electric device, and when image is by this rear video camera acquisition, eliminate the noise coming from the front of this portable electric device.Therefore, when user uses this portable electric device to record, the present invention effectively can reduce the recording noise of this portable electric device.
Description
Technical field
The invention relates to a kind of system and the method thereof that reduce noise, espespecially a kind of system and method thereof reducing portable electric device recording noise.
Background technology
In the prior art, flat computer or intelligent mobile phone use a microphone to record and converse usually.When user is when using intelligent mobile phone to converse, the elimination of the unstable state noise during intelligent mobile phone normally utilizes two microphones to converse.Such as, intelligent mobile phone can utilize Wave beam forming pattern (beam-formingpattern), or the sound difference utilizing time microphone and main microphone to receive is to eliminate the unstable state noise in conversing.
But when flat computer or intelligent mobile phone are when carrying out recording a video and/or recording, the not real-time function eliminating the on-the-spot noise of video recording of flat computer or intelligent mobile phone, causes the deleterious of recording a video and/or recording.
Summary of the invention
One embodiment of the invention provide a kind of system reducing portable electric device recording noise.This system comprises front video camera, microphone array and Sound Processor Unit.This front video camera is the front being arranged at this portable electric device, in order to obtain the image in this portable electric device front; This microphone array comprises at least two microphones, in order to receive message; This Sound Processor Unit is coupled to this microphone array, during in order to be by this front video camera acquisition when image, according to the parameter corresponding to this front wave beam rock mechanism in wave beam rock mechanism before Wave beam forming pattern and sound parameter database, eliminate the noise coming from the rear of this portable electric device.
An also embodiment of the present invention provides a kind of system reducing portable electric device recording noise.This system comprises front video camera, rear video camera, microphone array and Sound Processor Unit.This front video camera is the front being arranged at this portable electric device, in order to obtain the image in this portable electric device front; This rear video camera is the rear being arranged at this portable electric device, in order to obtain the image at this portable electric device rear; This microphone array comprises at least two microphones, in order to receive message; This Sound Processor Unit is coupled to this microphone array, during in order to be by this front video camera acquisition when image, according to the parameter corresponding to this front wave beam rock mechanism in wave beam rock mechanism before Wave beam forming pattern and sound parameter database, eliminate the noise coming from the rear of this portable electric device, and when image is by this rear video camera acquisition, according to the parameter corresponding to this rear wave beam rock mechanism in the rear wave beam rock mechanism of this Wave beam forming pattern and this audio parameter database, eliminate the noise coming from the front of this portable electric device.
An also embodiment of the present invention provides a kind of system reducing portable electric device recording noise.This system comprises rear video camera, microphone array and Sound Processor Unit.This rear video camera is the rear being arranged at this portable electric device, in order to obtain the image at this portable electric device rear; This microphone array comprises at least two microphones, in order to receive message; This Sound Processor Unit is coupled to this microphone array, during in order to be by this rear video camera acquisition when image, according to the parameter corresponding to this rear wave beam rock mechanism in the rear wave beam rock mechanism of Wave beam forming pattern and sound parameter database, eliminate the noise coming from the front of this portable electric device.
An also embodiment of the present invention provides a kind of method reducing the recording noise of portable electric device.The method comprises the image that front video camera obtains this portable electric device front; When this front video camera obtains the image in this portable electric device front, microphone array receives message; According to front wave beam rock mechanism and sound parameter database, select the parameter corresponding to this front wave beam rock mechanism; According to the parameter corresponding to this front wave beam rock mechanism, eliminate the noise coming from the rear of this portable electric device.
An also embodiment of the present invention provides a kind of method reducing the video camera recording noise of portable electric device.The method comprises the image that rear video camera obtains this portable electric device rear; When this rear video camera obtains the image at this portable electric device rear, microphone array receives message; According to rear wave beam rock mechanism and sound parameter database, select the parameter corresponding to this rear wave beam rock mechanism; According to the parameter corresponding to this rear wave beam rock mechanism, eliminate the noise coming from the front of this portable electric device.
An also embodiment of the present invention provides a kind of method reducing the video camera recording noise of portable electric device.The method comprises the image that front video camera obtains this portable electric device front; When this front video camera obtains the image in this portable electric device front, microphone array receives message; Gravity sensor judges whether the angle between the Z axis of this portable electric device and gravity direction is less than predetermined angular; If this angle is less than this predetermined angular, according to the parameter corresponding to wave beam rock mechanism before this level in wave beam rock mechanism before level and sound parameter database, eliminate the noise coming from the rear of this portable electric device.
An also embodiment of the present invention provides a kind of method reducing the video camera recording noise of portable electric device.The method comprises the image that front video camera obtains this portable electric device front; When this front video camera obtains the image in this portable electric device front, microphone array receives message; Gravity sensor judges whether the angle between the Z axis of this portable electric device and gravity direction is greater than predetermined angular; If this angle is greater than this predetermined angular, according to the parameter corresponding to this front wave beam rock mechanism in front wave beam rock mechanism and sound parameter database, eliminate the noise coming from the rear of this portable electric device.
The invention provides a kind of system and the method thereof that reduce portable electric device recording noise.This system and method thereof utilize in Sound Processor Unit and audio parameter database to correspond to the parameter of Wave beam forming pattern (level front wave beam rock mechanism, front wave beam rock mechanism, rear wave beam rock mechanism), to eliminate the noise that the front that comes from this portable electric device or rear are received by microphone array.So, when user uses this portable electric device to record, the present invention effectively can reduce the recording noise of this portable electric device.
Accompanying drawing explanation
Fig. 1 is for one embodiment of the invention illustrate a kind of schematic diagram reducing the system of portable electric device recording noise.
Fig. 2 A is the schematic diagram for front wave beam rock mechanism is described.
Fig. 2 B is the schematic diagram for rear wave beam rock mechanism is described.
Fig. 3 A is the schematic diagram of the system that reduction portable electric device recording noise is described for an also embodiment of the present invention.
Fig. 3 B is the schematic diagram of the Z axis for portable electric device is described.
Fig. 4 is for an also embodiment of the present invention illustrates a kind of flow chart reducing the method for the recording noise of portable electric device.
Fig. 5 is for an also embodiment of the present invention illustrates a kind of flow chart reducing the method for the recording noise of portable electric device.
Wherein, description of reference numerals is as follows:
100,300 systems
Video camera before 102
Video camera after 104
106 microphone arrays
108 Sound Processor Units
110 portable electric devices
312 gravity sensors
400-420,500-526 step
Embodiment
Please refer to Fig. 1, Fig. 1 is for one embodiment of the invention illustrate a kind of schematic diagram reducing the system 100 of portable electric device recording noise.System 100 comprises front video camera 102, rear video camera 104, microphone array 106 and Sound Processor Unit 108.Front video camera 102 is the fronts being arranged at portable electric device 110, in order to obtain the image in portable electric device 110 front, rear video camera 104 is the rears being arranged at portable electric device 110, in order to obtain the image at portable electric device 110 rear, microphone array 106 comprises at least two microphones, in order to receive the message in portable electric device 110 front and rear, Sound Processor Unit 108 is coupled to microphone array 106, in order to when image be obtained by front video camera 102 time, according to the parameter corresponding to front wave beam rock mechanism in the front wave beam rock mechanism (frontbeam-formingpattern) of Wave beam forming pattern (beam-formingpattern) and sound parameter database, the noise that the rear that elimination comes from portable electric device 110 is received by microphone array 106, and when image be obtained by rear video camera 104 time, according to the parameter corresponding to rear wave beam rock mechanism in the rear wave beam rock mechanism (rearbeam-formingpattern) of Wave beam forming pattern and sound parameter database, the noise that the front that elimination comes from portable electric device 110 is received by microphone array 106.In addition, system 100 is not limited to have front video camera 102 and rear video camera 104 simultaneously.System 100 also only can have front video camera 102 or rear video camera 104.In addition, user can according to the preset state of portable electric device 110 or the selection of user itself, and before utilizing, video camera 102 or rear video camera 104 are recorded a video.
Please refer to Fig. 2 A and Fig. 2 B, Fig. 2 A is schematic diagram for front wave beam rock mechanism is described, and Fig. 2 B is the schematic diagram for rear wave beam rock mechanism is described.As shown in Figure 2 A, 270 degree of dextrorotations go to the region (that is front of portable electric device 110) of 90 degree is (beamin) in wave beam; 90 degree of dextrorotations go to the region (that is rear of portable electric device 110) of 270 degree for wave beam outer (beamout).Therefore, when before starting, video camera 102 is recorded a video, Sound Processor Unit 108 can according to the parameter corresponding to front wave beam rock mechanism in front wave beam rock mechanism and sound parameter database, the noise that the rear that elimination comes from portable electric device 110 is received by microphone array 106.That is Sound Processor Unit 108 according to the parameter corresponding to front wave beam rock mechanism in front wave beam rock mechanism and sound parameter database, can eliminate the noise outside wave beam.As shown in Figure 2 B, 270 degree of dextrorotations go to the region (that is front of portable electric device 110) of 90 degree for outside wave beam; 90 degree of dextrorotations go to the region (that is rear of portable electric device 110) of 270 degree in wave beam.Therefore, when after starting, video camera 104 is recorded a video, Sound Processor Unit 108 can according to the parameter corresponding to rear wave beam rock mechanism in rear wave beam rock mechanism and sound parameter database, the noise that the front that elimination comes from portable electric device 110 is received by microphone array 106.That is Sound Processor Unit 108 according to the parameter corresponding to rear wave beam rock mechanism in rear wave beam rock mechanism and sound parameter database, can eliminate the noise outside wave beam.
Please refer to the schematic diagram that Fig. 3 A and Fig. 3 B, Fig. 3 A is the system 300 that reduction portable electric device recording noise is described for an also embodiment of the present invention, and Fig. 3 B is the schematic diagram of the Z axis for portable electric device 110 is described.The difference of system 300 and system 100 is that system 300 also comprises gravity sensor 312.Gravity sensor 312 is the angle theta (as shown in 3B) judged between the Z axis of portable electric device 110 and gravity direction.When image be obtained by front video camera 102 and angle theta is less than predetermined angular (such as 20 °) time, Sound Processor Unit 108, according to the parameter corresponding to wave beam rock mechanism before level in wave beam rock mechanism before the level of Wave beam forming pattern and sound parameter database, eliminates the noise that the rear that comes from portable electric device 110 is received by microphone array 106; When image be obtained by front video camera 102 and angle theta is greater than predetermined angular time, Sound Processor Unit 108 corresponds to the parameter of front wave beam rock mechanism according in wave beam rock mechanism before Wave beam forming pattern and sound parameter database, eliminates the noise that the rear that comes from portable electric device 110 is received by microphone array 106.
Please refer to Fig. 4, Fig. 4 is for an also embodiment of the present invention illustrates a kind of flow chart reducing the method for the recording noise of portable electric device.The method of Fig. 4 utilizes the system 100 of Fig. 1 to illustrate, detailed step is as follows:
Step 400: start;
Step 402: system 100 judges whether that front video camera 102 is unlocked or rear video camera 104 is unlocked;
If front video camera 102 is unlocked, carry out step 404; If rear video camera 104 is unlocked, carry out step 412;
Step 404: front video camera 102 obtains the image in portable electric device 110 front;
Step 406: microphone array 106 receives message;
Step 408: Sound Processor Unit 108, according to front wave beam rock mechanism and sound parameter database, selects the parameter corresponding to front wave beam rock mechanism;
Step 410: Sound Processor Unit 108, according to corresponding to the parameter of front wave beam rock mechanism, eliminates the noise that the rear that comes from portable electric device 110 is received by microphone array 106;
Skip to step 420;
Step 412: rear video camera 104 obtains the image at portable electric device 110 rear;
Step 414: microphone array 106 receives message;
Step 416: Sound Processor Unit 108, according to rear wave beam rock mechanism and sound parameter database, selects the parameter corresponding to rear wave beam rock mechanism;
Step 418: Sound Processor Unit 108, according to corresponding to the parameter of rear wave beam rock mechanism, eliminates the noise that the front that comes from portable electric device 110 is received by microphone array 106;
Step 420: terminate.
In step 402, user can according to the preset state of portable electric device 110 or the selection of user itself, and former video camera 102 or rear video camera 104 are recorded a video.In step 408 and step 410, as shown in Figure 2 A, 270 degree of dextrorotations go to the region of 90 degree is in wave beam; The region that 90 degree of dextrorotations go to 270 degree is outside wave beam.Therefore, when before starting, video camera 102 is recorded a video, Sound Processor Unit 108 can according to the parameter corresponding to front wave beam rock mechanism in front wave beam rock mechanism and sound parameter database, the noise that the rear that elimination comes from portable electric device 110 is received by microphone array 106.That is Sound Processor Unit 108 according to the parameter corresponding to front wave beam rock mechanism in front wave beam rock mechanism and sound parameter database, can eliminate the noise outside wave beam.In step 416 and step 418, as shown in Figure 2 B, 270 degree of dextrorotations go to the region of 90 degree is outside wave beam; The region that 90 degree of dextrorotations go to 270 degree is in wave beam.Therefore, when after starting, video camera 104 is recorded a video, Sound Processor Unit 108 can according to the parameter corresponding to rear wave beam rock mechanism in rear wave beam rock mechanism and sound parameter database, the noise that the front that elimination comes from portable electric device 110 is received by microphone array 106.That is Sound Processor Unit 108 according to the parameter corresponding to rear wave beam rock mechanism in rear wave beam rock mechanism and sound parameter database, can eliminate the noise outside wave beam.
Please refer to Fig. 5, Fig. 5 is for an also embodiment of the present invention illustrates a kind of flow chart reducing the method for the recording noise of portable electric device.The method of Fig. 5 utilizes the system 300 of Fig. 3 A to illustrate, detailed step is as follows:
Step 500: start;
Step 502: system 300 judges whether that front video camera 102 is unlocked or rear video camera 104 is unlocked;
If front video camera 102 is unlocked, carry out step 504; If rear video camera 104 is unlocked, carry out step 518;
Step 504: front video camera 102 obtains the image in portable electric device 110 front;
Step 506: microphone array 106 receives message;
Step 508: gravity sensor 312 judges that the angle theta between the Z axis of portable electric device 110 and gravity direction is less than predetermined angular? if so, carry out step 510; If not, carry out step 514;
Step 510: Sound Processor Unit 108, according to wave beam rock mechanism before level and sound parameter database, selects the parameter corresponding to wave beam rock mechanism before level;
Step 512: Sound Processor Unit 108, according to the parameter corresponding to wave beam rock mechanism before level, eliminates the noise that the rear that comes from portable electric device 110 is received by microphone array 106; Skip to step 526;
Step 514: Sound Processor Unit 108, according to front wave beam rock mechanism and sound parameter database, selects the parameter corresponding to front wave beam rock mechanism;
Step 516: Sound Processor Unit 108, according to corresponding to the parameter of front wave beam rock mechanism, eliminates the noise that the rear that comes from portable electric device 110 is received by microphone array 106; Skip to step 526;
Step 518: rear video camera 104 obtains the image at portable electric device 110 rear;
Step 520: microphone array 106 receives message;
Step 522: Sound Processor Unit 108, according to rear wave beam rock mechanism and sound parameter database, selects the parameter corresponding to rear wave beam rock mechanism;
Step 524: Sound Processor Unit 108, according to corresponding to the parameter of rear wave beam rock mechanism, eliminates the noise that the front that comes from portable electric device 110 is received by microphone array 106;
Step 526: terminate.
The difference of the embodiment of Fig. 5 and the embodiment of Fig. 4 is in step 508, does gravity sensor 312 judge that the angle theta between the Z axis of portable electric device 110 and gravity direction is less than predetermined angular? in step 512, Sound Processor Unit 108 is the parameters according to wave beam rock mechanism before the level of corresponding to, the noise that the rear that elimination comes from portable electric device 110 is received by microphone array 106.In step 516, Sound Processor Unit 108 is the parameters according to corresponding to front wave beam rock mechanism, the noise that the rear that elimination comes from portable electric device 110 is received by microphone array 106.In addition, all the other operating principles of the embodiment of Fig. 5 are all identical with the embodiment of Fig. 4, do not repeat them here.
In sum, the system of reduction portable electric device recording noise provided by the present invention and method thereof, utilize in Sound Processor Unit and audio parameter database to correspond to the parameter of Wave beam forming pattern (level front wave beam rock mechanism, front wave beam rock mechanism, rear wave beam rock mechanism), to eliminate the noise that the front that comes from portable electric device or rear are received by microphone array.So, when user uses portable electric device to record, the present invention effectively can reduce the recording noise of portable electric device.
The foregoing is only the preferred embodiments of the present invention, all equalizations done according to the claims in the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (8)
1. reduce a system for portable electric device recording noise, comprising:
Front video camera, is arranged at the front of this portable electric device, in order to obtain the image in this portable electric device front;
Microphone array, comprise at least two microphones, in order to receive message, wherein all directions of this microphone array in the space at this portable electric device place all do not form pickup angle, and the intensity of message that this microphone array receives in these all directions is not all pressed; And
The system is characterized in that and also comprise:
Sound Processor Unit, be coupled to this microphone array, in order to when image be obtained by this front video camera time, according to the parameter corresponding to this front Wave beam forming figure in the front Wave beam forming figure of Wave beam forming figure and sound parameter database, eliminate the noise coming from the rear of this portable electric device.
2. reduce a system for portable electric device recording noise, comprising:
Front video camera, is arranged at the front of this portable electric device, in order to obtain the image in this portable electric device front;
Rear video camera, is arranged at the rear of this portable electric device, in order to obtain the image at this portable electric device rear;
Microphone array, comprise at least two microphones, in order to receive message, wherein all directions of this microphone array in the space at this portable electric device place all do not form pickup angle, and the intensity of message that this microphone array receives in these all directions is not all pressed; And
The system is characterized in that and also comprise:
Sound Processor Unit, be coupled to this microphone array, during in order to be by this front video camera acquisition when image, according to the parameter corresponding to this front Wave beam forming figure in the front Wave beam forming figure of Wave beam forming figure and sound parameter database, eliminate the noise coming from the rear of this portable electric device, and when image is by this rear video camera acquisition, according to the parameter corresponding to this rear Wave beam forming figure in the rear Wave beam forming figure of this Wave beam forming figure and this audio parameter database, eliminate the noise coming from the front of this portable electric device.
3. reduce a system for portable electric device recording noise, comprising:
Rear video camera, is arranged at the rear of this portable electric device, in order to obtain the image at this portable electric device rear;
Microphone array, comprise at least two microphones, in order to receive message, wherein all directions of this microphone array in the space at this portable electric device place all do not form pickup angle, and the intensity of message that this microphone array receives in these all directions is not all pressed; And
The system is characterized in that and also comprise:
Sound Processor Unit, be coupled to this microphone array, in order to when image be obtained by this rear video camera time, according to the parameter corresponding to this rear Wave beam forming figure in the rear Wave beam forming figure of Wave beam forming figure and sound parameter database, eliminate the noise coming from the front of this portable electric device.
4. reduce a method for the recording noise of portable electric device, comprising:
Front video camera obtains the image in this portable electric device front;
When this front video camera obtains the image in this portable electric device front, microphone array receives message, wherein all directions of this microphone array in the space at this portable electric device place all do not form pickup angle, and the intensity of message that this microphone array receives in these all directions is not all pressed;
The method is characterized in that and also comprise:
According to front Wave beam forming figure and sound parameter database, select the parameter corresponding to this front Wave beam forming figure; And
According to the parameter corresponding to this front Wave beam forming figure, eliminate the noise coming from the rear of this portable electric device.
5. reduce a method for the video camera recording noise of portable electric device, comprising:
Rear video camera obtains the image at this portable electric device rear;
When this rear video camera obtains the image at this portable electric device rear, microphone array receives message, wherein all directions of this microphone array in the space at this portable electric device place all do not form pickup angle, and the intensity of message that this microphone array receives in these all directions is not all pressed;
The method is characterized in that and also comprise:
According to rear Wave beam forming figure and sound parameter database, select the parameter corresponding to this rear Wave beam forming figure; And
According to the parameter corresponding to this rear Wave beam forming figure, eliminate the noise coming from the front of this portable electric device.
6. method as claimed in claim 5, is characterized in that, also comprise:
Front video camera obtains the image in this portable electric device front;
When this front video camera obtains the image in this portable electric device front, this microphone array receives message;
According to front Wave beam forming figure and this audio parameter database, select the parameter corresponding to this front Wave beam forming figure; And
According to the parameter corresponding to this front Wave beam forming figure, eliminate the noise coming from the rear of this portable electric device.
7. reduce a method for the recording noise of portable electric device, comprising:
Front video camera obtains the image in this portable electric device front;
When this front video camera obtains the image in this portable electric device front, microphone array receives message;
The method is characterized in that and also comprise:
Gravity sensor judges whether the angle between the Z axis of this portable electric device and gravity direction is greater than predetermined angular, and wherein the Z axis of this portable electric device is perpendicular to the axle of the user interface of this portable electric device; And
If this angle is greater than this predetermined angular, according to the parameter corresponding to this front Wave beam forming figure in front Wave beam forming figure and sound parameter database, eliminate the noise coming from the rear of this portable electric device.
8. method as claimed in claim 7, is characterized in that, also comprise:
Rear video camera obtains the image at this portable electric device rear;
When this rear video camera obtains the image at this portable electric device rear, microphone array receives message;
According to rear Wave beam forming figure and this audio parameter database, select the parameter corresponding to this rear Wave beam forming figure; And
According to the parameter corresponding to this rear Wave beam forming figure, eliminate the noise coming from the front of this portable electric device.
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| CN104253943B (en) * | 2014-09-04 | 2018-06-22 | 广东欧珀移动通信有限公司 | Use the video capture method and apparatus of mobile terminal |
| CN109036448B (en) * | 2017-06-12 | 2020-04-14 | 华为技术有限公司 | Sound processing method and device |
| CN113132863B (en) * | 2020-01-16 | 2022-05-24 | 华为技术有限公司 | Stereo pickup method, apparatus, terminal device, and computer-readable storage medium |
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| CN101420474A (en) * | 2007-10-23 | 2009-04-29 | Lg电子株式会社 | Mobile terminal and apparatus for controlling illumination backlight thereof |
| CN102045618A (en) * | 2009-10-19 | 2011-05-04 | 联想(北京)有限公司 | Automatically adjusted microphone array, method for automatically adjusting microphone array, and device carrying microphone array |
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| CN101420474A (en) * | 2007-10-23 | 2009-04-29 | Lg电子株式会社 | Mobile terminal and apparatus for controlling illumination backlight thereof |
| CN102045618A (en) * | 2009-10-19 | 2011-05-04 | 联想(北京)有限公司 | Automatically adjusted microphone array, method for automatically adjusting microphone array, and device carrying microphone array |
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