CN102497529B - Novel camera locating tracking method for intelligent automatic sound mixing system and device thereof - Google Patents
Novel camera locating tracking method for intelligent automatic sound mixing system and device thereof Download PDFInfo
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- CN102497529B CN102497529B CN201110397506.7A CN201110397506A CN102497529B CN 102497529 B CN102497529 B CN 102497529B CN 201110397506 A CN201110397506 A CN 201110397506A CN 102497529 B CN102497529 B CN 102497529B
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Abstract
A novel camera locating tracking method for an intelligent automatic sound mixing system mainly includes following steps: (1) controlling audio signals and camera signals separately and designing a microphone channel and a camera channel respectively, wherein the microphone channel and the camera channel are characterized in that microphone/camera keys are arranged at the upper ends of the microphone channel and the camera channel, and a microphone/camera selecting switch is further arranged between the microphone channel and the camera channel; (2) designing a camera signal receiver for receiving camera request signals, enabling the camera signal receiver to be connected with a mixing amplifier and a controller in the intelligent automatic sound mixing system, enabling the controller to provide signals for a camera driver and control position transition of a camera; and (3) connecting the mixing amplifier and an input amplifier in the intelligent automatic sound mixing system, and enabling the audio signals to achieve sound amplification according to the working principle of intelligent automatic sound mixing. A phenomenon that projection images run along with variation of sound amplifying signals caused by providing the driving signals for the camera driver through the sound amplifying signals is changed thoroughly.
Description
Technical field
The invention belongs to stereo set technical field, be particularly exclusively used in the stereo set of speech reinforcement system.
Background technology
At present, intelligent automatic audio mixing equipment with camera positioning following function is often used in speech reinforcement system, its effect is in the time that spokesman makes a speech public address, camera positioning following function can project spokesman's image on projection screen simultaneously, make the participant on diverse location clearly see spokesman by projection screen, realize sound, treat as the good effect of meeting reaching, be the user's favorite.
Referring to accompanying drawing 1, existing its operation principle of intelligent automatic audio mixing equipment with camera positioning following function is: the audio signal from every microphone is sent to after audio signal is changed into level signal by input amplifier to signal comparator Zhong Yugai road Noise gate threshold level and compares, in the time that it is greater than Noise gate threshold level, this signal can reach the input of " maximum comparator ", in " maximum comparator ", the signal of the N from entrance is carried out to the comparison of level magnitude size, only have the maximum Yi of level magnitude road in an entrance N signal to be output to output amplifier to the output of rear class sound amplifier, realize public address, driving signal is provided to again webcam driver device simultaneously, camera is aimed to this spokesman, spokesman's image is presented on projection screen, visible, its camera positioning is followed the tracks of demonstration picture position and is controlled by public address signal, and in other words, in the time that certain spokesman makes a speech public address, camera will fix on this spokesman's position, and this spokesman's image will show on projection screen, and in the time that another one spokesman makes a speech public address, camera will be transformed on another one spokesman's position, another one spokesman's image will show on projection screen, conversion successively, but, such situation is only applicable to Methodistic speech one by one, and once make a speech unordered, for example: the meeting of discussion type, spokesman often converts, sometimes be that your my staggered form is made a speech, camera will ceaselessly be changed along with the continuous change of public address signal, an even sound cough, camera will change position, make the image showing on projection screen occur the phenomenon of " running chaotically ", so, the existing instructions for use that can not meet the meeting of discussion type with the intelligent automatic audio mixing device of camera positioning following function.
Summary of the invention
The present invention is intended to overcome prior art defect, keeping on the basis of existing intelligent automatic audio mixing system public address function, by redesign and the adjustment of microphone and camera function, provide a kind of intelligent automatic audio mixing system novel camera positioning tracking, design the novel camera positioning tracking means of a kind of intelligent automatic audio mixing system.
The novel camera positioning tracking of intelligent automatic audio mixing system, mainly comprises the steps:
1) by audio signal and separately control of image pickup signal, design respectively microphone channel and shooting passage, microphone channel is made up of the pick-up head of received audio signal and the mixer amplifier of the microphone amplifier that audio signal is amplified and reception signal; Shooting passage is made up of with the mixer amplifier that receives signal the switch signal generator that sends shooting request signal; It is characterized in that: designed microphone/shooting button in microphone channel and shooting passage upper end, controlled respectively the open and close of microphone and shooting request signal; Also designed microphone/shooting selector switch in microphone channel and shooting between passage, when the selection of microphone/shooting selector switch be microphone time, the pathway closure of making a video recording, microphone/shooting is the open and close of microphone by key control; What select when microphone/shooting selector switch is when shooting, microphone is all placed in opening, and be not subject to the control of microphone/shooting button, microphone/shooting is the switch signal generator that sends image pickup signal by key control, make it send shooting request or reset signal.
2) designed the image pickup signal receiver that receives shooting request signal, it is connected with the controller in intelligent automatic audio mixing system with the mixer amplifier that receives signal, provide driving signal by controller to webcam driver device, control the position conversion of camera.
3) mixer amplifier that receives signal is connected with the input amplifier in intelligent automatic audio mixing system, makes audio signal realize public address according to the operation principle of intelligent automatic audio mixing.
Based on said method, the present invention has designed the novel camera positioning tracking means of a kind of intelligent automatic audio mixing system, this device comprises: the input amplifier of N received audio signal, N the signal comparator comparing with threshold level, the controller of comparison value is provided to signal comparator, from N signal comparator output signal, choose the maximum comparator of maximum value signal, the webcam driver device that drives signal is provided to the output amplifier of rear class apparatus output signal with to camera, it is characterized in that: described controller is singlechip controller, the novel camera positioning tracking means of this intelligent automatic audio mixing system also comprises N microphone/shooting button of controlling microphone and image pickup signal open and close, select microphone/shooting selector switch of microphone and camera function for N, the pick-up head of N received audio signal, N the microphone amplifier that audio signal is amplified, N sends the switch signal generator of shooting request signal, and N receives the mixer amplifier of signal and the image pickup signal receiver of N reception image pickup signal, wherein, N microphone/shooting button is connected with N switch signal generator with N microphone amplifier respectively, each microphone amplifier respectively with pick-up head, microphone/shooting selector switch is connected with mixer amplifier, switch signal generator is connected with mixer amplifier with microphone/shooting selector switch respectively, mixer amplifier is connected with input amplifier with image pickup signal receiver respectively, N input amplifier is connected with N signal comparator respectively, each signal comparator is connected with maximum comparator with controller respectively, maximum comparator is connected with output amplifier with controller, each image pickup signal receiver is connected with controller respectively, controller is connected with webcam driver device.
Referring to accompanying drawing 2, operation principle of the present invention is: when " microphone/shooting selector switch " select be A (microphone) time, microphone/shooting selector switch is to microphone amplifier output low level, the open and close of microphone the are subject to control of " microphone/shooting button ", press " microphone/shooting button ", microphone is opened, and again presses " microphone/shooting button ", and microphone is closed; Meanwhile, microphone/shooting selector switch is exported high level to switch signal generator, makes switch signal generator in closed condition.
When " microphone/shooting selector switch " select be B (shooting) time, microphone/shooting selector switch is exported high level to microphone amplifier, makes microphone in normally open, and is not subject to the control of " microphone/shooting button "; Simultaneously to switch signal generator output low level, make under the control of switch signal generator in " microphone/shooting button ", often press once " microphone/shooting button ", switch signal generator sends a shooting request pulse signal, this signal exports image pickup signal receiver to through mixer amplifier, and send to controller, provide driving signal by controller to webcam driver device, camera will be aimed at the position of pressing " microphone/shooting button ", and this location drawing is looked like to project on projection screen; In the time again pressing " microphone/shooting button ", controller receives after the request signal of this position again, provide reset signal to webcam driver device, camera is got back to initial default position, if again do not press " microphone/shooting button ", camera will rest on this position forever, until the spokesman on another location presses " microphone/shooting button ", camera just can forward on another location.
Compared with prior art, the invention has the beneficial effects as follows: keeping on the basis of existing intelligent automatic audio mixing systemic-function, audio signal and image pickup signal are controlled respectively, changed thoroughly by public address signal to webcam driver device provide drive signal and the projected image that causes with public address signal intensity the phenomenon of " running chaotically ", and, image-pickup positioning function is easy to operate, use is flexible, can meet the instructions for use of various meetings.
Brief description of the drawings
Fig. 1 is the structured flowchart of the existing intelligent automatic audio mixing equipment with camera positioning following function;
Fig. 2 is structured flowchart of the present invention.
Embodiment
With reference to the accompanying drawings 2, the present invention is described further:
The novel camera positioning tracking of intelligent automatic audio mixing system, mainly comprises the steps:
1) by audio signal and separately control of image pickup signal, design respectively microphone channel and shooting passage, microphone channel is made up of the pick-up head of received audio signal and the mixer amplifier of the microphone amplifier that audio signal is amplified and reception signal; Shooting passage is made up of with the mixer amplifier that receives signal the switch signal generator that sends shooting request signal; It is characterized in that: designed microphone/shooting button in microphone channel and shooting passage upper end, controlled respectively the unlatching of microphone and shooting request signal or close; Also designed microphone/shooting selector switch in microphone channel and shooting between passage, when the selection of microphone/shooting selector switch be microphone time, the pathway closure of making a video recording, microphone/shooting is the open and close of microphone by key control; What select when microphone/shooting selector switch is when shooting, and microphone is all placed in opening, and is not subject to the control of microphone/shooting button, and microphone/shooting is the switch signal generator that sends image pickup signal by key control, makes it send to make a video recording and ask or reset signal.
2) designed the image pickup signal receiver that receives shooting request signal, it is connected with the controller in intelligent automatic audio mixing system with the mixer amplifier that receives signal, provide driving signal by controller to webcam driver device, control the position conversion of camera.
3) mixer amplifier that receives signal is connected with the input amplifier in intelligent automatic audio mixing system, makes audio signal realize public address according to the operation principle of intelligent automatic audio mixing.
Based on said method, the present invention has designed the novel camera positioning tracking means of a kind of intelligent automatic audio mixing system, this device comprises: the input amplifier of N received audio signal, N the signal comparator comparing with threshold level, the controller of comparison value is provided to signal comparator, from N signal comparator output signal, choose the maximum comparator of maximum value signal, the webcam driver device that drives signal is provided to the output amplifier of rear class apparatus output signal with to camera, it is characterized in that: described controller is singlechip controller, the novel camera positioning tracking means of this intelligent automatic audio mixing system also comprises N microphone/shooting button of controlling microphone and image pickup signal open and close, select microphone/shooting selector switch of microphone and camera function for N, the pick-up head of N received audio signal, N the microphone amplifier that audio signal is amplified, N sends the switch signal generator of shooting request signal, and N receives the mixer amplifier of signal and the image pickup signal receiver of N reception image pickup signal, wherein, N microphone/shooting button is connected with N switch signal generator with N microphone amplifier respectively, each microphone amplifier respectively with pick-up head, microphone/shooting selector switch is connected with mixer amplifier, switch signal generator is connected with mixer amplifier with microphone/shooting selector switch respectively, mixer amplifier is connected with input amplifier with image pickup signal receiver respectively, N input amplifier is connected with N signal comparator respectively, each signal comparator is connected with maximum comparator with controller respectively, maximum comparator is connected with output amplifier with controller, each image pickup signal receiver is connected with controller respectively, controller is connected with webcam driver device.
When use, in the time not needing camera function, " microphone/shooting selector switch " is placed in to the position of A (microphone), spokesman presses " microphone/shooting button " microphone and opens, spokesman's audio signal realizes public address according to the operation principle of intelligent automatic audio mixing, after speech finishes, again press " microphone/shooting button ", microphone is closed.
In the time of needs camera function, " microphone/shooting selector switch " is placed in to the position of B (shooting), now, every spokesman's microphone is all in opening, can make a speech at any time, what camera was aimed at is the acquiescence position of having set, in the time that spokesman presses " microphone/shooting button ", its corresponding switch signal generator will send shooting request signal, this signal exports image pickup signal receiver to through mixer amplifier, and send to controller, provide driving signal by controller to webcam driver device, camera will be aimed at this position, spokesman's image is projected on projection screen, after spokesman's speech finishes, again press " microphone/shooting button ", camera will be got back to acquiescence position, in the time that next bit spokesman presses " microphone/shooting button " of its correspondence, switch signal generator can send shooting request signal equally, camera will be aimed at next bit spokesman's position, next bit spokesman's image is projected on projection screen, after speech finishes, while again pressing " microphone/shooting button ", camera can be got back to acquiescence position, if again do not press " microphone/shooting button ", camera will rest on this position forever, until the spokesman on another location presses " microphone/shooting button ", camera just can forward on another location.
As can be seen here, the conversion of camera and public address signal are irrelevant, therefore, occur never projected image with public address signal intensity the phenomenon of " running chaotically ".
Described singlechip controller by
aTMEGA16form.
Described microphone/shooting button by
cD4013form.
Described microphone/shooting selector switch by
1 × 2 toggle switchform.
Described microphone amplifier by
mMBT5087, MMBT5088form.
Described switch signal generator by
cD4013form.
Described mixer amplifier by
2N5551form.
Described image pickup signal receiver by
74LS373,74LS30,74LS02,74LS244form.
Claims (2)
1. intelligent automatic audio mixing system camera positioning tracking, mainly comprises the steps:
1) by audio signal and separately control of image pickup signal, design respectively microphone channel and shooting passage, microphone channel is made up of the pick-up head of received audio signal and the mixer amplifier of the microphone amplifier that audio signal is amplified and reception signal; Shooting passage is made up of with the mixer amplifier that receives signal the switch signal generator that sends shooting request signal; It is characterized in that: have microphone/shooting button in microphone channel with above shooting passage, control respectively the unlatching of microphone and shooting request signal or close; Also designed microphone/shooting selector switch in microphone channel and shooting between passage, when the selection of microphone/shooting selector switch be microphone time, the pathway closure of making a video recording, microphone/shooting is the open and close of microphone by key control; What select when microphone/shooting selector switch is when shooting, microphone is all placed in opening, and be not subject to microphone/shooting by key control, microphone/shooting is the switch signal generator that sends image pickup signal by key control, make it send shooting request or reset signal;
2) designed the image pickup signal receiver that receives shooting request signal, it is connected with the controller in intelligent automatic audio mixing system with the mixer amplifier that receives signal, provide driving signal by controller to webcam driver device, control the position conversion of camera;
3) mixer amplifier that receives signal is connected with the input amplifier in intelligent automatic audio mixing system, makes audio signal realize public address according to the operation principle of intelligent automatic audio mixing.
2. intelligent automatic audio mixing system camera positioning tracking means, this device comprises: the input amplifier of N received audio signal, N the signal comparator comparing with threshold level, the controller of comparison value is provided to signal comparator, from N signal comparator output signal, choose the maximum comparator of maximum value signal, the webcam driver device that drives signal is provided to the output amplifier of rear class apparatus output signal with to camera, it is characterized in that: described controller is singlechip controller, this intelligent automatic audio mixing system camera positioning tracking means also comprises N microphone/shooting button of controlling microphone and image pickup signal open and close, select microphone/shooting selector switch of microphone and camera function for N, the pick-up head of N received audio signal, N the microphone amplifier that audio signal is amplified, N sends the switch signal generator of shooting request signal, and N receives the mixer amplifier of signal and the image pickup signal receiver of N reception image pickup signal, when microphone/shooting selector switch select be microphone time, shooting pathway closure, microphone/shooting is the open and close of microphone by key control, what select when microphone/shooting selector switch is when shooting, microphone is all placed in opening, and be not subject to microphone/shooting by key control, microphone/shooting is the switch signal generator that sends image pickup signal by key control, make it send shooting request or reset signal, wherein, N microphone/shooting button is connected with N switch signal generator with N microphone amplifier respectively, each microphone amplifier respectively with pick-up head, microphone/shooting selector switch is connected with mixer amplifier, switch signal generator is connected with mixer amplifier with microphone/shooting selector switch respectively, mixer amplifier is connected with input amplifier with image pickup signal receiver respectively, N input amplifier is connected with N signal comparator respectively, each signal comparator is connected with maximum comparator with controller respectively, maximum comparator is connected with output amplifier with controller, each image pickup signal receiver is connected with controller respectively, controller is connected with webcam driver device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110397506.7A CN102497529B (en) | 2011-12-05 | 2011-12-05 | Novel camera locating tracking method for intelligent automatic sound mixing system and device thereof |
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| CN201110397506.7A CN102497529B (en) | 2011-12-05 | 2011-12-05 | Novel camera locating tracking method for intelligent automatic sound mixing system and device thereof |
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| CN102497529B true CN102497529B (en) | 2014-09-17 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2697996Y (en) * | 2002-09-28 | 2005-05-04 | 深圳市宏电技术开发有限公司 | Microphone adapted for video camera positioning tracing |
| JP2009017330A (en) * | 2007-07-06 | 2009-01-22 | Sony Corp | Video conference system, video conference method, and video conference program |
| CN101720051A (en) * | 2009-11-20 | 2010-06-02 | 天津市华音宇科工贸有限公司 | Novel intelligent automatic audio mixing method and device thereof |
| CN201919110U (en) * | 2010-11-03 | 2011-08-03 | 北京华夏电通科技有限公司 | Trial host machine for digital court system |
| CN202364236U (en) * | 2011-12-05 | 2012-08-01 | 天津市华音宇科工贸有限公司 | Intelligent automatic sound mixing device with novel shooting, positioning and tracking function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO332161B1 (en) * | 2009-12-30 | 2012-07-09 | Cisco Systems Int Sarl | Method and system for determining the direction between a detection point and an acoustic source |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2697996Y (en) * | 2002-09-28 | 2005-05-04 | 深圳市宏电技术开发有限公司 | Microphone adapted for video camera positioning tracing |
| JP2009017330A (en) * | 2007-07-06 | 2009-01-22 | Sony Corp | Video conference system, video conference method, and video conference program |
| CN101720051A (en) * | 2009-11-20 | 2010-06-02 | 天津市华音宇科工贸有限公司 | Novel intelligent automatic audio mixing method and device thereof |
| CN201919110U (en) * | 2010-11-03 | 2011-08-03 | 北京华夏电通科技有限公司 | Trial host machine for digital court system |
| CN202364236U (en) * | 2011-12-05 | 2012-08-01 | 天津市华音宇科工贸有限公司 | Intelligent automatic sound mixing device with novel shooting, positioning and tracking function |
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Granted publication date: 20140917 Termination date: 20171205 |