CN102223594A - Microphone control device and method - Google Patents
Microphone control device and method Download PDFInfo
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- CN102223594A CN102223594A CN2010101501521A CN201010150152A CN102223594A CN 102223594 A CN102223594 A CN 102223594A CN 2010101501521 A CN2010101501521 A CN 2010101501521A CN 201010150152 A CN201010150152 A CN 201010150152A CN 102223594 A CN102223594 A CN 102223594A
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Abstract
The invention discloses a microphone control device and method. The microphone control device comprises an image inputting unit, a brake unit and a microprocessor. The microprocessor comprises an image detecting module and an adjusting module; the image detecting module is used for receiving scene images shot by the image inputting unit, detecting and distinguishing the scene images by adopting a face detection method, judging whether the face image of the user is included in the scene image, and detecting the mouth position of the user according to the dimensional proportion of the face image and the scene image; and the adjusting module is used for computing the height, distance and angle of the microphone to be adjusted according to the mouth position of the user and the preset position of the microphone, and generating a control signal according to the computed height, distance and angle so as to drive the brake unit to adjust the microphone to the mouth position of the user. By use of the invention, the microphone can extract the clearest voice of the user without being manually adjusted by the user so that the microphone can achieve the best voice reception effect in real time.
Description
Technical field
The present invention relates to a kind of microphone and control method thereof, particularly about a kind of device and method of controlling the best radio reception of microphone position.
Background technology
Microphone is a kind of energy converter that converts tones into electronic signal, its basic principle is for after the sound vibrating diaphragm process vibrations of sound of microphone, sound vibrations is transformed into electronic signal, and electronic signal is amplified through expander, and delivering to loudspeaker more just becomes original sound.The microphone of this kind conversion of signals mode is common dynamic microphones (claiming the dynamic type microphone again) and Electret Condencer Microphone.Wherein, Electret Condencer Microphone is more expensive, but tonequality is better also thinner, and shortcoming is not for high pressure resistant.
Microphone can also be distinguished by its mode that receives sound except the mode difference of switching signal.If a microphone can receive the sound that all directions transmit, just be that aphalangia is to the formula microphone; If microphone can only receive the sound of certain direction, then be sensing formula microphone.Sensing formula microphone is even more important before the lights because it receives only the sound in the place ahead, from the side or the sound that transmits of rear all can be ostracised, so can avoid a lot of unnecessary noises.Yet, the just necessary in use carefully direction of microphone of user, if the direction of microphone is not right, the sound of receiving is just not right.
According to aforementioned, the radio reception mode that different types of microphone is had nothing in common with each other, but because traditional microphone is not in conjunction with the image detecting technology, face and mouth position that can't the Auto-Sensing user, and being adjusted to best radio reception position and angle voluntarily by user's height, the user can only start to adjust the height and the angle position of microphone before use voluntarily.Yet, always have multidigit speech person or performing artist in the most activity flow process, even please professional sounds specialist before the activity set microphone position in advance, but often because every speech person or performing artist's height is not quite similar and causes the radio reception effect different.If every speech person all readjusts microphone height and angle position before speech, except meeting influences speech mood and performance quality, also may cause the activity time to delay and be difficult for management and control, the adjusted voluntarily microphone radio reception of user and the effect that amplifies can not reach optimum efficiency in addition.
Summary of the invention
In view of above content, be necessary to provide a kind of microphone control device and method, can adjust microphone height, distance and angle automatically to best radio reception position, adjust microphone position and need not the user with manual mode.
Described microphone control device comprises: the image input unit is used for taking in real time near the scene image of microphone; Brake unit is used to regulate the position of microphone; And microprocessor, this microprocessor comprises image detecting module and adjustment module.Described image detecting module is used to receive the captured scene image of image input unit, adopt face's method for detecting to carry out image detecting and identification at scene image, judge the people's face image that whether comprises the user in the scene image, and detect user's mouth position according to the dimension scale of people's face image and scene image.Described adjustment module is used for calculating according to the predeterminated position of user's mouth position and microphone height, distance and the angle of the required adjustment of microphone, produce control signal corresponding with angle, and drive the mouth position that described brake unit is adjusted to the position of microphone the user according to the height that calculates, distance according to this control signal.
Described microphone control method comprises the steps: that controller judgement user enables automatic mode or self-defined pattern; When the user enabled automatic mode, execution in step (a1) was to step (a5): (a1) by the image input unit near the scene image the microphone; (a2) adopt face's method for detecting to carry out image detecting and identification at the scene image that the image input unit is absorbed; (a3) when comprising people's face image of user in the scene image, detect user's mouth position according to the dimension scale of people's face image and scene image; (a4) calculate height, distance and the angle of the required adjustment of microphone according to user's the mouth position and the desired location of microphone; (a5) produce control signal corresponding with angle, and drive the mouth position that brake unit is adjusted to the position of microphone the user according to the height that calculates, distance according to this control signal.When the user enabled self-defined pattern, execution in step (b1) is to step (b4): (b1) user should move to face the desire desired location; (b2) by the people face image of image input unit according near the shooting user desire desired location; (b3) adopt face's method for detecting to analyze the dimension scale of people's face image and scene image and people's face image size data of user; (b4) with people's face image size storage of the dimension scale of people's face image and scene image and user in memory cell, and execution in step (a1) is to step (a5).
Compared to prior art, microphone control device of the present invention and method have adopted face's detection techniques, and the height, distance that can adjust microphone automatically according to user's face and mouth position and angle are to best radio reception position.Allow microphone can capture user's sound the most clearly, and the user need not to adjust microphone position with manual mode, not only can more accurate control activity flow process and time, also can allow microphone reach best radio reception effect in real time.
Description of drawings
Fig. 1 is the Organization Chart of microphone control device of the present invention preferred embodiment.
Fig. 2 is that microphone control device of the present invention is applied to the schematic diagram on the microphone holder.
Fig. 3 is the flow chart of microphone control method of the present invention preferred embodiment.
The schematic diagram of Fig. 4 person of being to use use microphone under automatic mode.
Fig. 5 person of being to use uses the schematic diagram of microphone under self-defined pattern.
The main element symbol description
Microprocessor 2
Brake unit 3
Controller 4
Set button 42
Microphone 11
Embodiment
As shown in Figure 1, be the Organization Chart of microphone control device 10 preferred embodiments of the present invention.This microphone control device 10 is used for automatically adjusting according to user's face and mouth position height, distance and the angle of microphone 11.With reference to shown in Figure 2, microphone 11 is installed on microphone control device 10, and this microphone control device 10 is installed on the support 12.In the present embodiment, described microphone control device 10 comprises image input unit 1, microprocessor 2, brake unit 3, controller 4 and memory cell 5 at least.
Described image input unit 1 is connected with microprocessor 2, and it is used for taking in real time near the scene image the microphone 11, image A for example shown in Figure 4 and image B shown in Figure 5, and this scene image is sent to microprocessor 2 carries out image detecting.In the present embodiment, described image input unit 1 is a kind of night-vision camera, infrared camera that possesses the shoot function at night, perhaps for any can obtain the image input unit of digitized video.
Described microprocessor 2 is connected with brake unit 3, it is used for the scene image that discriminance analysis image input unit 1 is absorbed, from scene image, detect user's face and mouth position, and produce height, distance and angle adjustment the mouth position to user of control signal driving brake unit 3 microphone 11.In the present embodiment, described microprocessor 2 is a kind of programmable chip, in be solidified with microphone control command module, it comprises image detecting module 21 and adjustment module 22.
Described controller 4 is connected with microprocessor 2, and it comprises automatic button 41 and set button 42, is used to judge that the user enables (Auto) pattern or self-defined (Reset) pattern automatically.In the present embodiment, when the user pressed automatic button 41 (with reference to shown in Figure 4), controller 4 was carried out automatic mode; When the user pressed setting button 42 (with reference to shown in Figure 5), controller 4 was carried out self-defined pattern.Described automatic mode is to utilize the Default Value value be stored in the memory cell 5 to adjust the position of microphone 11 automatically, and this Default Value value comprises the set positions data of user's height of the best radio reception quality correspondence of microphone 11.The described self-defined pattern person of being to use can set up the position of gram wind 11 according to the personal like on their own, adjusts the position of microphone 11 according to this desired location.When the user desires to set up the position of microphone 11 on their own, can press earlier and set button 42, face is moved to decontrol behind the appropriate location that desire sets again and set button 42, controller 4 promptly enters self-defined pattern.
Described memory cell 5 is connected with microprocessor 2, it is used to store the Default Value value of adjusting microphone 11 positions, the set positions data of user's height of the best radio reception quality correspondence of microphone 11 for example, and people's face image size data of storage user when using self-defined pattern, length for example shown in Figure 5 (W) and width (H).
Described image detecting module 21 is used to receive near the scene image of the positions captured microphone 11 of image input unit 1, adopt face's method for detecting to carry out image detecting and identification at the scene image that is absorbed, judge the people's face image that whether comprises the user in the scene image, and the mouth position that detects the user according to the dimension scale of people's face image and scene image.In the present embodiment, when image detecting module 21 pick out comprise people's face image in the scene image after, again with user's face location zone below roughly 1/3rd places as user's mouth position.
Described adjustment module 22 is used for calculating according to the predeterminated position of user's mouth position and microphone 11 height, distance and the angle of microphone 11 required adjustment, produce control signal corresponding according to the height that calculates, distance with angle, and drive brake unit 3 according to this control signal the position of microphone 11 is adjusted to user's mouth position, thereby make microphone 11 can reach best radio reception quality and radio reception effect.
As shown in Figure 3, be the flow chart of microphone control method of the present invention preferred embodiment.In the present embodiment, this microphone control method can be carried out automatic mode and two kinds of patterns of self-defined pattern, in conjunction with the best radio reception characteristic of face's detection techniques and microphone 11, by according to user's face, the mouth position that mouth position is adjusted to microphone 11 user automatically.
Step S300, manufacturer set the Default Value value of microphone 11, for example the set positions data of user's height of the best radio reception quality correspondence of microphone 11 in advance in memory cell 5.Step S301, controller 4 judges that the user enables (Auto) pattern or self-defined (Reset) pattern automatically.In the present embodiment, when the user pressed the automatic button 41 (with reference to shown in Figure 4) of controller 4, controller 4 was carried out automatic mode, and flow process turns to step S302; When the user pressed the setting button 42 (with reference to shown in Figure 5) of controller 4, controller 4 was carried out self-defined pattern, and flow process turns to step S309.
Step S302, when controller 4 was carried out automatic mode, image detecting module 21 was taken near the scene of the position microphone 11 by image input unit 1 and is obtained scene image.Step S303, image detecting module 21 adopts face's method for detecting to carry out image detecting and identification at the scene image that image input unit 1 is absorbed.Step S304, image detecting module 21 is judged the people's face image that whether comprises the user in the scene image.If do not comprise people's face image of user in the scene image, flow process is returned near the scene image the lasting picked-up of the step S302 microphone 11.If comprise people's face image of user in the scene image, step S305, image detecting module 21 detects user's mouth position according to the dimension scale of people's face image and scene image.In the present embodiment, when image detecting module 21 pick out comprise people's face image in the scene image after, again with user's face location zone below roughly 1/3rd places as user's mouth position.
Step S306, adjustment module 22 is calculated height, distance and the angle of microphone 11 required adjustment according to user's the mouth position and the desired location of microphone 11.Step S307, adjustment module 22 produces control signal corresponding according to the height that calculates, distance with angle, and drive brake unit 3 according to this control signal the position of microphone 11 is adjusted to user's face and mouth position, thereby make microphone 11 can reach best radio reception quality and radio reception effect.Step S308, controller 4 judge whether microphone 11 is closed.If microphone 11 is closed, then flow process finishes; If microphone 11 is not closed, flow process turns near the scene image the lasting picked-up of the step S302 microphone 11.Therefore, the user is in the performance process, if health has any action of rocking or departing from microphone a little to produce, the height that also can be dynamically carries out microphone 11 according to user's face and mouth position, apart from the real-time correction adjustment of angle.
Step S309, when the user pressed the setting button 42 (with reference to shown in Figure 5) of controller 4, controller 4 was carried out self-defined pattern.Step S310, the user should move to face and desire to decontrol setting button 42 behind the desired location this moment.Step S311, image detecting module 21 is taken people's face image of user by image input unit 1 according to desiring desired location.Step S312, image detecting module 21 adopts face's method for detecting to analyze the dimension scale of people's face image and scene image and people's face image size data of user, length for example shown in Figure 5 (W) and width (H).Step S313, in memory cell 5, then the above-mentioned identical step S302 of flow performing is to step S308 with people's face image size storage of the dimension scale of people's face image and scene image and user for image detecting module 21.
In the present embodiment, the user is in using microphone 11 processes, and image input unit 1 can continue to take the scene image that contains user face.Image detecting module 21 detects captured scene image user's face location and people's face image size with face's detection techniques.Adjustment module 22 is compared with previous beautiful woman's face image size and the position data of setting, and according to data microphone 11 is adjusted to the appropriate location.When user's desire is removed self-defined pattern and is reverted to former factory set point, only need press automatic button 41, controller 4 is just removed previous self-defined pattern, is the adjustment standard with former factory setting value.
Claims (10)
1. a microphone control device is characterized in that, this microphone control device comprises:
The image input unit is used for taking in real time near the scene image of microphone;
Brake unit is used to regulate the position of microphone;
Microprocessor, this microprocessor comprises:
The image detecting module, be used to receive the captured scene image of image input unit, adopt face's method for detecting to carry out image detecting and identification at scene image, judge the people's face image that whether comprises the user in the scene image, and the mouth position that detects the user according to the dimension scale of people's face image and scene image;
Adjustment module, be used for calculating height, distance and the angle of the required adjustment of microphone according to user's the mouth position and the predeterminated position of microphone, produce control signal corresponding with angle, and drive the mouth position that described brake unit is adjusted to the position of microphone the user according to the height that calculates, distance according to this control signal.
2. microphone control device as claimed in claim 1 is characterized in that this device also comprises controller, and this controller comprises automatic button and sets button, is used to judge that the user enables automatic mode or self-defined pattern.
3. microphone control device as claimed in claim 2 is characterized in that, when the user pressed automatic button, controller was carried out automatic mode, and when the user pressed the setting button, controller was carried out self-defined pattern.
4. microphone control device as claimed in claim 2 is characterized in that this device also comprises memory cell, is used to store the Default Value value of the best radio reception of microphone position, and people's face image size data of storage user when using self-defined pattern.
5. microphone control device as claimed in claim 1 is characterized in that, described image detecting module detects the mouth position of 1/3rd places, below, user's face location zone as the user.
6. microphone control method is characterized in that the method comprising the steps of:
Controller judges that it still is self-defined pattern that the user enables automatic mode;
When the user enabled automatic mode, execution in step (a1) was to step (a5):
(a1) pass through the image input unit near the scene image the microphone;
(a2) adopt face's method for detecting to carry out image detecting and identification at the scene image that the image input unit is absorbed;
(a3) when comprising people's face image of user in the scene image, detect user's mouth position according to the dimension scale of people's face image and scene image;
(a4) calculate height, distance and the angle of the required adjustment of microphone according to user's the mouth position and the desired location of microphone;
(a5) produce control signal corresponding with angle, and drive the mouth position that brake unit is adjusted to the position of microphone the user according to the height that calculates, distance according to this control signal;
When the user enabled self-defined pattern, execution in step (b1) was to step (b4):
(b1) user should move to face the desire desired location;
(b2) by the people face image of image input unit according near the shooting user desired location;
(b3) adopt face's method for detecting to analyze the dimension scale of people's face image and scene image and people's face image size data of user;
(b4) with people's face image size storage of the dimension scale of people's face image and scene image and user in memory cell, and execution in step (a1) is to step (a5).
7. microphone control method as claimed in claim 6 is characterized in that, described controller comprises automatic button and sets button, is used to judge that the user enables automatic mode or self-defined pattern.
8. microphone control method as claimed in claim 7 is characterized in that, when the user pressed automatic button, controller was carried out automatic mode, and when the user pressed the setting button, controller was carried out self-defined pattern.
9. microphone control method as claimed in claim 7 is characterized in that, this method also comprises step:
In memory cell, set the set positions data of user's height of the best radio reception quality correspondence of microphone in advance.
10. microphone control method as claimed in claim 6 is characterized in that, described user's mouth position is positioned at 1/3rd places, below, user's face location zone.
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| CN201010150152.1A CN102223594B (en) | 2010-04-19 | 2010-04-19 | Microphone control device and method |
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| WO2019080705A1 (en) * | 2017-10-23 | 2019-05-02 | 京东方科技集团股份有限公司 | Collection device, sound collection method, and sound source tracking system and method therefor |
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| CN107909669A (en) * | 2017-11-24 | 2018-04-13 | 李仕晨 | A kind of new recognition of face punched-card machine |
| CN108447159A (en) * | 2018-03-28 | 2018-08-24 | 百度在线网络技术（北京）有限公司 | Man face image acquiring method, apparatus and access management system |
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