CN102780947A - System for reducing recording noise of handheld electronic device and method thereof - Google Patents
System for reducing recording noise of handheld electronic device and method thereof Download PDFInfo
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- CN102780947A CN102780947A CN2011101263373A CN201110126337A CN102780947A CN 102780947 A CN102780947 A CN 102780947A CN 2011101263373 A CN2011101263373 A CN 2011101263373A CN 201110126337 A CN201110126337 A CN 201110126337A CN 102780947 A CN102780947 A CN 102780947A
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Abstract
The invention discloses a system for reducing recording noise of a handheld electronic device and a method thereof. The system comprises a front camera, a rear camera, a microphone array and a sound processor; the front camera is used for obtaining images at the front side of the handheld electronic device; the rear camera is used for obtaining the images at the back side of the handheld electronic device; the microphone array is used for receiving messages; the sound processor is coupled with the microphone array and used for eliminating noises coming from the back side of the handheld electronic device when the image is obtained by the front camera, and used for eliminating the noise coming from the front side of the handheld electronic device when the image is obtained by the rear camera. Therefore, when a user uses the handheld electronic device to record, the system and the method provided by the invention can be used for effectively reducing the recording noise of the handheld electronic device.
Description
Technical field
The invention relates to a kind of system and method thereof that reduces noise, refer to a kind of system and method thereof that reduces portable electric device recording noise especially.
Background technology
In the prior art, flat computer or intelligent mobile phone use a microphone to record and converse usually.When the user when using intelligent mobile phone to converse, intelligent mobile phone normally utilizes the elimination of the unstable state noise of two microphones in conversing.For example, intelligent mobile phone wave beam capable of using forms pattern (beam-forming pattern), or utilizes sound difference that time microphone and main microphone receive to eliminate the unstable state noise in conversing.
Yet when flat computer or intelligent mobile phone when recording a video and record, flat computer or intelligent mobile phone are not eliminated the function of the on-the-spot noise of video recording in real time, cause the deleterious of recording a video and recording.
Summary of the invention
One embodiment of the invention provide a kind of system that reduces portable electric device recording noise.This system comprises preceding video camera, microphone array and Sound Processor Unit.Should preceding video camera be the place ahead that is arranged at this portable electric device, in order to obtain the image in this portable electric device the place ahead; This microphone array comprises at least two microphones, in order to receive message; This Sound Processor Unit is to be coupled to this microphone array; In order to being when obtaining when image by this preceding video camera; The preceding wave beam that forms pattern according to wave beam forms in pattern and the sound parameter database parameter of the pattern that forms corresponding to this preceding wave beam, and elimination comes from the noise at the rear of this portable electric device.
An also embodiment of the present invention provides a kind of system that reduces portable electric device recording noise.This system comprises preceding video camera, back video camera, microphone array and Sound Processor Unit.Should preceding video camera be the place ahead that is arranged at this portable electric device, in order to obtain the image in this portable electric device the place ahead; This back video camera is the rear that is 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 to be coupled to this microphone array; In order to being when obtaining when image by this preceding video camera; The preceding wave beam that forms pattern according to wave beam forms in pattern and the sound parameter database parameter corresponding to this preceding wave beam formation pattern; Elimination comes from the noise at the rear of this portable electric device; And when image be when obtaining by this back video camera, the back wave beam that forms pattern according to this wave beam forms in pattern and this audio parameter database corresponding to the parameter of this back wave beam formation pattern, elimination comes from the noise in the place ahead of this portable electric device.
An also embodiment of the present invention provides a kind of system that reduces portable electric device recording noise.This system comprises back video camera, microphone array and Sound Processor Unit.This back video camera is the rear that is 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 to be coupled to this microphone array; In order to being when obtaining when image by this back video camera; The back wave beam that forms pattern according to wave beam forms in pattern and the sound parameter database parameter of the pattern that forms corresponding to this back wave beam, and elimination comes from the noise in the place ahead of this portable electric device.
An also embodiment of the present invention provides a kind of method that reduces the recording noise of portable electric device.Video camera obtained the image in this portable electric device the place ahead before this method comprised; When this preceding video camera obtained the image in this portable electric device the place ahead, the microphone array received message; Form pattern and sound parameter database according to preceding wave beam, select the parameter of the pattern that forms corresponding to this preceding wave beam; According to the parameter that forms pattern corresponding to this preceding wave beam, eliminate the noise at the rear that comes from this portable electric device.
An also embodiment of the present invention provides a kind of method that reduces the video camera recording noise of portable electric device.This method comprises that the back video camera obtains the image at this portable electric device rear; When this back video camera obtained the image at this portable electric device rear, the microphone array received message; Form pattern and sound parameter database according to the back wave beam, select the parameter of the pattern that forms corresponding to this back wave beam; According to the parameter that forms pattern corresponding to this back wave beam, eliminate the noise in the place ahead that comes from this portable electric device.
An also embodiment of the present invention provides a kind of method that reduces the video camera recording noise of portable electric device.Video camera obtained the image in this portable electric device the place ahead before this method comprised; When this preceding video camera obtained the image in this portable electric device the place ahead, the microphone array received message; Gravity sensor judges that whether Z axle and the angle between the gravity direction of this portable electric device are less than predetermined angular; If this angle is less than this predetermined angular, form in pattern and the sound parameter database parameter of the pattern that forms corresponding to wave beam before this level according to wave beam before the level, elimination comes from the noise at the rear of this portable electric device.
An also embodiment of the present invention provides a kind of method that reduces the video camera recording noise of portable electric device.Video camera obtained the image in this portable electric device the place ahead before this method comprised; When this preceding video camera obtained the image in this portable electric device the place ahead, the microphone array received message; Gravity sensor judges that whether Z axle and the angle between the gravity direction of this portable electric device are greater than predetermined angular; If this angle is greater than this predetermined angular, form in pattern and the sound parameter database parameter of the pattern that forms corresponding to this preceding wave beam according to preceding wave beam, elimination comes from the noise at the rear of this portable electric device.
The present invention provides a kind of system and method thereof that reduces portable electric device recording noise.This system and method thereof are to utilize in Sound Processor Unit and the audio parameter database parameter that forms pattern (before the level wave beam form pattern, preceding wave beam form pattern, the back wave beam forms pattern) corresponding to wave beam, come from the place ahead of this portable electric device or the noise that the rear is received by the microphone array with elimination.So, when the user used this portable electric device to record, the present invention can effectively reduce the recording noise of this portable electric device.
Description of drawings
Fig. 1 is the sketch map that reduces the system of portable electric device recording noise for one embodiment of the invention explanation is a kind of.
Fig. 2 A is the sketch map that forms pattern for wave beam before explaining.
Fig. 2 B is for explaining that the back wave beam forms the sketch map of pattern.
Fig. 3 A is the sketch map that the system that reduces portable electric device recording noise is described for an also embodiment of the present invention.
Fig. 3 B is the sketch map for the Z axle of explanation portable electric device.
Fig. 4 is the flow chart that a kind of method of the recording noise that reduces portable electric device is described for an also embodiment of the present invention.
Fig. 5 is the flow chart that a kind of method of the recording noise that reduces portable electric device is described for an also embodiment of the present invention.
Wherein, description of reference numerals is following:
100,300 systems
Video camera before 102
104 back video cameras
106 microphone arrays
108 Sound Processor Units
110 portable electric devices
312 gravity sensors
400-420,500-526 step
Embodiment
Please with reference to Fig. 1, Fig. 1 is the sketch map that reduces the system 100 of portable electric device recording noise for one embodiment of the invention explanation is a kind of.System 100 comprises preceding video camera 102, back video camera 104, microphone array 106 and Sound Processor Unit 108.Preceding video camera 102 is the place aheads that are arranged at portable electric device 110, in order to obtain the image in portable electric device 110 the place aheads; Back video camera 104 is the rears that are arranged at portable electric device 110, in order to obtain the image at portable electric device 110 rears; Microphone array 106 comprises at least two microphones, in order to receive the message at portable electric device 110 the place aheads and rear; Sound Processor Unit 108 is to be coupled to microphone array 106; In order to being when obtaining when image by preceding video camera 102; The preceding wave beam that forms pattern (beam-forming pattern) according to wave beam forms in pattern (front beam-forming pattern) and the sound parameter database parameter corresponding to preceding wave beam formation pattern; Elimination comes from the noise that the rear of portable electric device 110 is received by microphone array 106; And when image be when afterwards video camera 104 obtains; The back wave beam that forms pattern according to wave beam forms in pattern (rear beam-forming pattern) and the sound parameter database parameter of the pattern that forms corresponding to the back wave beam, and elimination comes from the noise that the place ahead of portable electric device 110 is received by microphone array 106.In addition, system 100 is not limited to have simultaneously preceding video camera 102 and back video camera 104.System 100 also can only have preceding video camera 102 or back video camera 104.In addition, the user can be according to the preset state of portable electric device 110 or user's selection itself, and video camera 102 or back video camera 104 are recorded a video before utilizing.
Please with reference to Fig. 2 A and Fig. 2 B, Fig. 2 A is the sketch map that forms pattern for wave beam before explaining, Fig. 2 B is for explaining that the back wave beam forms the sketch map of pattern.Shown in Fig. 2 A, 270 degree dextrorotations go to the zone (that is the place ahead of portable electric device 110) of 90 degree in the wave beam (beam in); The zone (that is rear of portable electric device 110) that 90 degree dextrorotations go to 270 degree is wave beam outer (beam out).Therefore; When video camera 102 is recorded a video before starting; Sound Processor Unit 108 can form in pattern and the sound parameter database parameter of the pattern that forms corresponding to preceding wave beam according to preceding wave beam, and elimination comes from the noise that the rear of portable electric device 110 is received by microphone array 106.That is Sound Processor Unit 108 can form in pattern and the sound parameter database parameter of the pattern that forms corresponding to preceding wave beam according to preceding wave beam, eliminates wave beam noise outward.Shown in Fig. 2 B, 270 degree dextrorotations go to the zone (that is the place ahead of portable electric device 110) of 90 degree for outside the wave beam; 90 degree dextrorotations go to the zone (that is rear of portable electric device 110) of 270 degree in the wave beam.Therefore; When video camera 104 is recorded a video after starting; Sound Processor Unit 108 can form in pattern and the sound parameter database parameter of the pattern that forms corresponding to the back wave beam according to the back wave beam, and elimination comes from the noise that the place ahead of portable electric device 110 is received by microphone array 106.That is Sound Processor Unit 108 can form in pattern and the sound parameter database parameter of the pattern that forms corresponding to the back wave beam according to the back wave beam, eliminates the noise outside the wave beam.
Please with reference to Fig. 3 A and Fig. 3 B, Fig. 3 A explains that for an also embodiment of the present invention the sketch map of the system 300 that reduces portable electric device recording noise and Fig. 3 B are the sketch mapes for the Z axle of explanation portable electric device 110.The difference of system 300 and system 100 is that system 300 also comprises gravity sensor 312.Gravity sensor 312 is in order to the Z axle of judging portable electric device 110 and the angle theta (shown in 3B) between the gravity direction.When image is to be obtained and angle theta during less than predetermined angular (for example 20 °) by preceding video camera 102; Sound Processor Unit 108 forms the parameter that wave beam before the level of pattern forms in pattern and the sound parameter database pattern that forms corresponding to wave beam before the level according to wave beam, elimination comes from the noise that the rear of portable electric device 110 is received by microphone array 106; When image is to be obtained and angle theta during greater than predetermined angular by preceding video camera 102; The preceding wave beam that Sound Processor Unit 108 forms pattern according to wave beam forms in pattern and the sound parameter database parameter of the pattern that forms corresponding to preceding wave beam, and elimination comes from the noise that the rear of portable electric device 110 is received by microphone array 106.
Please with reference to Fig. 4, Fig. 4 is the flow chart that a kind of method of the recording noise that reduces portable electric device is described for an also embodiment of the present invention.The method of Fig. 4 is to utilize system's 100 explanations of Fig. 1, and detailed step is following:
Step 400: beginning;
Step 402: system 100 judges whether that preceding video camera 102 is unlocked or back video camera 104 is unlocked;
If preceding video camera 102 is unlocked, carry out step 404; If back video camera 104 is unlocked, carry out step 412;
Step 404: preceding video camera 102 obtains the image in portable electric device 110 the place aheads;
Step 406: microphone array 106 receives message;
Step 408: Sound Processor Unit 108 forms pattern and sound parameter database according to preceding wave beam, selects the parameter of the pattern that forms corresponding to preceding wave beam;
Step 410: Sound Processor Unit 108 is according to the parameter that forms pattern corresponding to preceding wave beam, 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: back video camera 104 obtains the image at portable electric device 110 rears;
Step 414: microphone array 106 receives message;
Step 416: Sound Processor Unit 108 forms pattern and sound parameter database according to the back wave beam, selects the parameter of the pattern that forms corresponding to the back wave beam;
Step 418: Sound Processor Unit 108 is according to the parameter that forms pattern corresponding to the back wave beam, eliminates the noise that the place ahead of coming from portable electric device 110 is received by microphone array 106;
Step 420: finish.
In step 402, the user can be according to the preset state of portable electric device 110 or user's selection itself, and former video camera 102 or back video camera 104 are recorded a video.In step 408 and step 410, shown in Fig. 2 A, the zone that 270 degree dextrorotations go to 90 degree is in the wave beam; The zone that 90 degree dextrorotations go to 270 degree is outside the wave beam.Therefore; When video camera 102 is recorded a video before starting; Sound Processor Unit 108 can form in pattern and the sound parameter database parameter of the pattern that forms corresponding to preceding wave beam according to preceding wave beam, and elimination comes from the noise that the rear of portable electric device 110 is received by microphone array 106.That is Sound Processor Unit 108 can form in pattern and the sound parameter database parameter of the pattern that forms corresponding to preceding wave beam according to preceding wave beam, eliminates wave beam noise outward.In step 416 and step 418, shown in Fig. 2 B, the zone that 270 degree dextrorotations go to 90 degree is outside the wave beam; The zone that 90 degree dextrorotations go to 270 degree is in the wave beam.Therefore; When video camera 104 is recorded a video after starting; Sound Processor Unit 108 can form in pattern and the sound parameter database parameter of the pattern that forms corresponding to the back wave beam according to the back wave beam, and elimination comes from the noise that the place ahead of portable electric device 110 is received by microphone array 106.That is Sound Processor Unit 108 can form in pattern and the sound parameter database parameter of the pattern that forms corresponding to the back wave beam according to the back wave beam, eliminates the noise outside the wave beam.
Please with reference to Fig. 5, Fig. 5 is the flow chart that a kind of method of the recording noise that reduces portable electric device is described for an also embodiment of the present invention.The method of Fig. 5 is to utilize system's 300 explanations of Fig. 3 A, and detailed step is following:
Step 500: beginning;
Step 502: system 300 judges whether that preceding video camera 102 is unlocked or back video camera 104 is unlocked;
If preceding video camera 102 is unlocked, carry out step 504; If back video camera 104 is unlocked, carry out step 518;
Step 504: preceding video camera 102 obtains the image in portable electric device 110 the place aheads;
Step 506: microphone array 106 receives message;
Does step 508: gravity sensor 312 judge that Z axle and the angle theta between the gravity direction of portable electric device 110 are less than predetermined angular? If carry out step 510; If, carry out step 514;
Step 510: Sound Processor Unit 108 forms pattern and sound parameter database according to wave beam before the level, selects the parameter of the pattern that forms corresponding to wave beam before the level;
Step 512: Sound Processor Unit 108 is according to the parameter that forms pattern corresponding to wave beam before the 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 forms pattern and sound parameter database according to preceding wave beam, selects the parameter of the pattern that forms corresponding to preceding wave beam;
Step 516: Sound Processor Unit 108 is according to the parameter that forms pattern corresponding to preceding wave beam, 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: back video camera 104 obtains the image at portable electric device 110 rears;
Step 520: microphone array 106 receives message;
Step 522: Sound Processor Unit 108 forms pattern and sound parameter database according to the back wave beam, selects the parameter of the pattern that forms corresponding to the back wave beam;
Step 524: Sound Processor Unit 108 is according to the parameter that forms pattern corresponding to the back wave beam, eliminates the noise that the place ahead of coming from portable electric device 110 is received by microphone array 106;
Step 526: finish.
The difference of the embodiment of Fig. 5 and the embodiment of Fig. 4 is in step 508; Does gravity sensor 312 judge that Z axle and the angle theta between the gravity direction of portable electric device 110 are less than predetermined angular? In step 512; Sound Processor Unit 108 is according to the parameter that forms pattern corresponding to wave beam before the level, eliminates the noise that the rear that comes from portable electric device 110 is received by microphone array 106.In step 516, Sound Processor Unit 108 is according to the parameter that forms pattern corresponding to preceding wave beam, eliminates the noise that the rear that 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 all embodiment with Fig. 4 are identical, repeat no more at this.
In sum; The system and the method thereof of reduction portable electric device recording noise provided by the present invention; Be to utilize in Sound Processor Unit and the audio parameter database parameter that forms pattern (before the level wave beam form pattern, preceding wave beam form pattern, the back wave beam forms pattern) corresponding to wave beam, come from the place ahead of portable electric device or the noise that the rear is received by the microphone array with elimination.So, when the user used portable electric device to record, the present invention can effectively reduce the recording noise of portable electric device.
The above is merely the preferred embodiments of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. system that reduces portable electric device recording noise comprises:
Before video camera, be arranged at the place ahead of this portable electric device, in order to obtain the image in this portable electric device the place ahead;
The microphone array comprises at least two microphones, in order to receive message; And
The system is characterized in that also and comprise:
Sound Processor Unit; Be coupled to this microphone array; In order to being when obtaining when image by this preceding video camera; The preceding wave beam that forms pattern according to wave beam forms in pattern and the sound parameter database parameter of the pattern that forms corresponding to this preceding wave beam, and elimination comes from the noise at the rear of this portable electric device.
2. system that reduces portable electric device recording noise comprises:
Before video camera, be arranged at the place ahead of this portable electric device, in order to obtain the image in this portable electric device the place ahead;
Back video camera is arranged at the rear of this portable electric device, in order to obtain the image at this portable electric device rear;
The microphone array comprises at least two microphones, in order to receive message; And
The system is characterized in that also and comprise:
Sound Processor Unit; Be coupled to this microphone array; In order to being when obtaining when image by this preceding video camera; The preceding wave beam that forms pattern according to wave beam forms in pattern and the sound parameter database parameter of the pattern that forms corresponding to this preceding wave beam, eliminates the noise at the rear that comes from this portable electric device, reach when image be when obtaining by this back video camera; The back wave beam that forms pattern according to this wave beam forms in pattern and this audio parameter database the parameter of the pattern that forms corresponding to this back wave beam, eliminates the noise in the place ahead that comes from this portable electric device.
3. according to claim 1 or claim 2 system is characterized in that, also comprises:
Gravity sensor; In order to the Z axle of judging this portable electric device and the angle between the gravity direction; Wherein when this angle during less than predetermined angular; This Sound Processor Unit forms the parameter that wave beam before the level of pattern forms in pattern and this audio parameter database the pattern that forms corresponding to wave beam before this level according to this wave beam, eliminate the noise at the rear that comes from this portable electric device, when this angle during greater than this predetermined angular; The preceding wave beam that this Sound Processor Unit forms pattern according to this wave beam forms in pattern and this audio parameter database the parameter of the pattern that forms corresponding to this preceding wave beam, eliminates the noise at the rear that comes from this portable electric device.
4. system that reduces portable electric device recording noise comprises:
Back video camera is arranged at the rear of this portable electric device, in order to obtain the image at this portable electric device rear;
The microphone array comprises at least two microphones, in order to receive message; And
The system is characterized in that also and comprise:
Sound Processor Unit; Be coupled to this microphone array; In order to being when obtaining when image by this back video camera; The back wave beam that forms pattern according to wave beam forms in pattern and the sound parameter database parameter of the pattern that forms corresponding to this back wave beam, and elimination comes from the noise in the place ahead of this portable electric device.
5. method that reduces the recording noise of portable electric device comprises:
Preceding video camera obtains the image in this portable electric device the place ahead;
When this preceding video camera obtained the image in this portable electric device the place ahead, the microphone array received message;
The method is characterized in that also and comprise:
Form pattern and sound parameter database according to preceding wave beam, select the parameter of the pattern that forms corresponding to this preceding wave beam; And
According to the parameter that forms pattern corresponding to this preceding wave beam, eliminate the noise at the rear that comes from this portable electric device.
6. the method for a video camera recording noise that reduces portable electric device comprises:
Back video camera obtains the image at this portable electric device rear;
When this back video camera obtained the image at this portable electric device rear, the microphone array received message;
The method is characterized in that also and comprise:
Form pattern and sound parameter database according to the back wave beam, select the parameter of the pattern that forms corresponding to this back wave beam; And
According to the parameter that forms pattern corresponding to this back wave beam, eliminate the noise in the place ahead that comes from this portable electric device.
7. method as claimed in claim 6 is characterized in that, also comprises:
Preceding video camera obtains the image in this portable electric device the place ahead;
When this preceding video camera obtained the image in this portable electric device the place ahead, this microphone array received message;
Form pattern and this audio parameter database according to preceding wave beam, select the parameter of the pattern that forms corresponding to this preceding wave beam; And
According to the parameter that forms pattern corresponding to this preceding wave beam, eliminate the noise at the rear that comes from this portable electric device.
8. method that reduces the recording noise of portable electric device comprises:
Preceding video camera obtains the image in this portable electric device the place ahead;
When this preceding video camera obtained the image in this portable electric device the place ahead, the microphone array received message;
The method is characterized in that also and comprise:
Gravity sensor judges that whether Z axle and the angle between the gravity direction of this portable electric device are less than predetermined angular; And
If this angle is less than this predetermined angular, form in pattern and the sound parameter database parameter of the pattern that forms corresponding to wave beam before this level according to wave beam before the level, elimination comes from the noise at the rear of this portable electric device.
9. method that reduces the recording noise of portable electric device comprises:
Preceding video camera obtains the image in this portable electric device the place ahead;
When this preceding video camera obtained the image in this portable electric device the place ahead, the microphone array received message;
The method is characterized in that also and comprise:
Gravity sensor judges that whether Z axle and the angle between the gravity direction of this portable electric device are greater than predetermined angular; And
If this angle is greater than this predetermined angular, form in pattern and the sound parameter database parameter of the pattern that forms corresponding to this preceding wave beam according to preceding wave beam, elimination comes from the noise at the rear of this portable electric device.
10. like the method for claim 8 or 9, it is characterized in that, also comprise:
Back video camera obtains the image at this portable electric device rear;
When this back video camera obtained the image at this portable electric device rear, the microphone array received message;
Form pattern and this audio parameter database according to the back wave beam, select the parameter of the pattern that forms corresponding to this back wave beam; And
According to the parameter that forms pattern corresponding to this back wave beam, eliminate the noise in the place ahead that comes from this portable electric device.
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| CN201110126337.3A CN102780947B (en) | 2011-05-13 | 2011-05-13 | Reduce system and the method thereof of portable electric device recording noise |
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| CN201110126337.3A CN102780947B (en) | 2011-05-13 | 2011-05-13 | Reduce system and the method thereof of portable electric device recording noise |
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| CN109036448A (en) * | 2017-06-12 | 2018-12-18 | 华为技术有限公司 | A kind of sound processing method and device |
| CN114846816A (en) * | 2020-01-16 | 2022-08-02 | 华为技术有限公司 | Stereo pickup method, apparatus, terminal device, and computer-readable storage medium |
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| CN114846816B (en) * | 2020-01-16 | 2023-10-20 | 华为技术有限公司 | Stereo pickup method, stereo pickup device, terminal device and computer-readable storage medium |
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| CN102780947B (en) | 2015-12-16 |
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