CN203151672U - Video system having function of sound source location - Google Patents

Video system having function of sound source location Download PDF

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Publication number
CN203151672U
CN203151672U CN 201320130625 CN201320130625U CN203151672U CN 203151672 U CN203151672 U CN 203151672U CN 201320130625 CN201320130625 CN 201320130625 CN 201320130625 U CN201320130625 U CN 201320130625U CN 203151672 U CN203151672 U CN 203151672U
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CN
China
Prior art keywords
microphones
module
microphone
video
sound source
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CN 201320130625
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Chinese (zh)
Inventor
徐华中
蒋宏
肖应诚
包伟
黄杰军
张文雅
孟玮
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徐华中
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Priority to CN 201320130625 priority Critical patent/CN203151672U/en
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Publication of CN203151672U publication Critical patent/CN203151672U/en

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Abstract

The utility model discloses a video system having a function of sound source location. The system comprises a microphone array, a first microphone (1), a second microphone (2), a third microphone (3) and a fourth microphone (4) are connected with an AD data acquisition module (7) through a preamplifier circuit (5), data lines are used for bidirectional connection between the AD data acquisition module (7) and a DSP module (8) and between the AD data acquisition module (7) and an FPGA module (9), and the DSP module (8) is connected with a driving device inside a two-degree of freedom holder (13) via a holder driving module through a control line. According to the utility model, the microphone array which is mounted at different positions in a space are used for collecting sound waves, and the difference of time it takes to arrive the four microphones from the sound source is analyzed and calculated, so that the accurate position of the sound source in the space can be determined and locked in time, and the camera on the holder can be controlled to point at the sound source, thereby recording the video of the sound source. The video system has a wide application range.

Description

A kind of video system with auditory localization function

Technical field

The utility model relates to a kind of video system, relates in particular to a kind of video system with auditory localization function.

Background technology

At present, in modern multi-person television telephone meeting, a camera usually can't be taken down all personnel on the scene fully, so usually need a Camera crews to operate camera, aims at just the spokesman.Intelligent robot is main developing direction with machine vision generally, and is same because the visual angle of camera is limited, usually has the useful information of omitting in the environment, and such intelligent robot seems the slow-witted of comparison can not respond as the people to sound.

Various video monitoring cameras is arranged in the modern city, security protection camera, traffic camera etc. are arranged, but now camera all is fixing or realizes monitoring function with certain rotational speed, the shortcoming of this mode maximum is suitable dumb of monitor mode, usually cause photographing a lot of useless videos, and usually miss real useful part.For the abnormal conditions in the monitoring range: as the zone that blast, traffic accident etc. can produce abnormal sound, traditional supervisory control system is just helpless.

The Chinese patent Granted publication number is: CN101957442A, the day for announcing is: the patent of invention on January 26th, 2011 discloses a kind of auditory localization device, relate to and use the device that sound wave is located by the cooperation of determining a plurality of directions, it is three dimensions acoustic target positioner, by hearing transducer, sound-source signal microprocessor and master system three parts constitute, hearing transducer is the microphone array of quaternary positive tetrahedron structure, four microphones lay respectively at four summits of this positive tetrahedron structure, the sound-source signal microprocessor is by the voice signal amplification module, analyzing latch module and communications module constitutes, master system is made of method for calculating and locating and ancillary equipment, and the hardware components between various piece and each module all interconnects with lead.But this apparatus structure complexity, the position of locking sound source that can not be accurately and timely, the camera that can not effectively control on the The Cloud Terrace is aimed at the sound source place, uses inconvenient.

Summary of the invention

The purpose of this utility model is at existing auditory localization apparatus structure complexity, the position of locking sound source that can not be accurately and timely, can not effectively control defective and deficiency that the camera on the The Cloud Terrace is aimed at the sound source place, now provide a kind of simple in structure, the position of locking sound source that can be accurately and timely, and can effectively control a kind of video system with auditory localization function that the camera on the The Cloud Terrace is aimed at the sound source place.

For achieving the above object, technical solution of the present utility model is: a kind of video system with auditory localization function, comprise microphone array, microphone array is made of four microphones that constitute four summits of positive tetrahedron, that is: No. 1 microphone, No. 2 microphones, No. 3 microphones and No. 4 microphones are formed, described No. 1 microphone, No. 2 microphones, No. 3 microphone is connected with the AD data acquisition module through the microphone pre-amplification circuit respectively with No. 4 microphones, be connected by data wire is two-way between AD data acquisition module and the DSP module and between AD data acquisition module and the FPGA module, be connected by data wire between DSP module and the FPGA module, the DSP module is connected with the FLASH module with the SDRAM module respectively by data wire, the DSP module is connected with drive unit in the cradle head of two degrees of freedom through the The Cloud Terrace driver module by control line, and camera head is installed on the cradle head of two degrees of freedom.

Described No. 1 microphone, No. 2 microphones, No. 3 microphones and No. 4 microphones are installed in respectively on four tripods that can stretch that are positioned at diverse location, and perhaps four microphones are installed on the tripod that can stretch.

Air line distance in described No. 1 microphone, No. 2 microphones, No. 3 microphones and No. 4 microphones between adjacent two microphones equates.

Described microphone pre-amplification circuit is connected with gain control circuit, and gain control circuit is connected with the DSP module.

Two drive units installing in the described cradle head of two degrees of freedom are respectively servomotor.

The beneficial effects of the utility model are:

1, the utility model is gathered sound wave by the microphone array that is installed in the space diverse location, and calculate the time difference that sound source arrives four microphones by gain control circuit, AD data acquisition module, DSP module, FPGA module, SDRAM module and FLASH module analysis, and then determined the accurate position of sound source in the space.

2, the utility model is little with taking up space, and is quick on the draw, and can in time lock the position of sound source, and can control the camera aligning sound source place on the The Cloud Terrace, realizes taking the video at sound source place, and the scope of application is wide.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the distribution map of the utility model microphone array.

Among the figure: 3, No. 4 microphones 4 of 2, No. 3 microphones of 1, No. 2 microphone of No. 1 microphone, microphone pre-amplification circuit 5, gain control circuit 6, AD data acquisition module 7, DSP module 8, FPGA module 9, SDRAM module 10, FLASH module 11, The Cloud Terrace driver module 12, cradle head of two degrees of freedom 13.

Embodiment

Below in conjunction with description of drawings and embodiment the utility model is described in further detail.

Referring to Fig. 1, Fig. 2, a kind of video system with auditory localization function of the present utility model, comprise microphone array, microphone array is made of four microphones that constitute four summits of positive tetrahedron, that is: No. 1 microphone 1, No. 2 microphones 2, No. 3 microphones 3 and No. 4 microphones 4 are formed, described No. 1 microphone 1, No. 2 microphones 2, No. 3 microphone 3 is connected with AD data acquisition module 7 through microphone pre-amplification circuit 5 respectively with No. 4 microphones 4, be connected by data wire is two-way between AD data acquisition module 7 and the DSP module 8 and between AD data acquisition module 7 and the FPGA module 9, be connected by data wire between DSP module 8 and the FPGA module 9, DSP module 8 is connected with FLASH module 11 with SDRAM module 10 respectively by data wire, DSP module 8 is connected with drive unit in the cradle head of two degrees of freedom 13 through The Cloud Terrace driver module 12 by control line, on the cradle head of two degrees of freedom 13 camera head is installed.

Described No. 1 microphone 1, No. 2 microphones 2, No. 3 microphones 3 and No. 4 microphones 4 are installed in respectively on four tripods that can stretch that are positioned at diverse location, and perhaps four microphones are installed on the tripod that can stretch.

Air line distance in described No. 1 microphone 1, No. 2 microphones 2, No. 3 microphones 3 and No. 4 microphones 4 between adjacent two microphones equates.

Described microphone pre-amplification circuit 5 is connected with gain control circuit 6, and gain control circuit 6 is connected with DSP module 8.

Two drive units installing in the described cradle head of two degrees of freedom 13 are respectively servomotor.

The utility model has adopted microphone array, microphone array is distributed in by four at least that the microphone of diverse location constitutes in the solid space, if adopt four microphones, be respectively No. 1 microphone 1, No. 2 microphones 2, No. 3 microphones 3 and No. 4 microphones 4, No. 1 microphone 1, No. 2 microphones 2, No. 3 microphones 3 and No. 4 microphone 4 residing positions four summits that are the space positive tetrahedron then, the air line distance between per two microphones equates.If be initial point with the leg-of-mutton central point in the bottom surface of this positive tetrahedron, set up coordinate system X, Y, Z, just on X-axis, No. 4 microphone 4 just is positioned on the Z axle for No. 1 microphone 1.

No. 1 microphone 1, No. 2 microphones 2, No. 3 microphones 3 and No. 4 microphones 4 are installed in respectively on four tripods that can stretch that are positioned at diverse location, perhaps four microphones are installed on the same tripod that can stretch, also can be directly installed on the wall in the meeting room, and make that four residing positions of microphone are four summits of space positive tetrahedron.Adopt the benefit of telescopic tripod support microphone array clearly, the first, the feet of tripod can stretch, and the convenient height of regulating is like this to adapt to the different application occasion; The second, can support microphone array with the tripod that supports camera or video camera; The 3rd, tripod can shrink easily, convenient transportation.

No. 1 microphone 1, No. 2 microphones 2, No. 3 microphones 3 are connected with AD data acquisition module 7 through microphone pre-amplification circuit 5 respectively with No. 4 microphones 4, also microphone pre-amplification circuit 5 can be integrated to form the microphone array signals conditioning circuit module.Microphone pre-amplification circuit 5 adopts the mode of the fixing amplification of one-level INA128 and the voltage-controlled amplification of one-level VCA810 to realize, here microphone signal is differential signal, INA128 amplifies this differential signal, this signal is amplified by the VCA810 voltage control Amplifier subsequently, because VCA810 is voltage-controlled amplifier, and can realize ± the control dynamic range of 40dB.7 employings four tunnel of AD data acquisition module, 128kHz, 24 bit synchronizations sampling sigma-delta ADC sampling device ADS1274, the sample rate of this device is up to 144 kHz and satisfies audio applications fully.The DSP signal processor adopts the TMS320C6713 of TI company here, and this device has powerful floating-point and fixed-point calculation ability, to satisfy a large amount of computing requirements.

Microphone pre-amplification circuit 5 is connected with gain control circuit 6, and gain control circuit 6 is connected with DSP module 8.AD data acquisition module 7 is connected with DSP module 8 by data/address bus, and AD data acquisition module 7 is connected with FPGA module 9, is connected by data wire between DSP module 8 and the FPGA module 9.FPGA module 9 adopts the low-cost FPGA hurricane series of ALTERA company, and the main effect of FPGA module 9 is the control signals that receive DSP module 8, and ADC samples simultaneously by control bus control.DSP module 8 is connected with FLASH module 11 with SDRAM module 10 respectively by data wire, SDRAM module 10 storage of collected to data and calculating process in the intermediate variable that produces, adopt the SDRAM of 2MByte size here.

DSP module 8 is connected with drive unit in the cradle head of two degrees of freedom 13 through The Cloud Terrace driver module 12 by control line, on the cradle head of two degrees of freedom 13 camera head is installed.Cradle head of two degrees of freedom 13 and camera head are positioned at the outside of the positive tetrahedron that No. 1 microphone 1, No. 2 microphones 2, No. 3 microphones 3 and No. 4 microphones 4 constitute.Two servomotors are installed in the cradle head of two degrees of freedom 13, do not adopt steering wheel and adopt the reason of servomotor to be: the system requirements trunnion axis rotates the stroke that needs 360 degree, and 360 degree steering wheels can not rotate above a week to a direction continuously, if the current angle of steering wheel is 360 degree, if want to turn to 1 degree, then can not directly forward 1 degree to from 360 degree, can only get back to 1 degree from 360 degree to 180 degree to the such mode of 1 degree, servomotor then can rotate continuously, can directly forward 1 degree to from 360 degree, it is more more flexible than the The Cloud Terrace that steering wheel mode constitutes therefore to adopt servomotor to constitute The Cloud Terrace.

Claims (5)

1. video system with auditory localization function, comprise microphone array, microphone array is made of four microphones that constitute four summits of positive tetrahedron, that is: No. 1 microphone (1), No. 2 microphones (2), No. 3 microphones (3) and No. 4 microphones (4) are formed, it is characterized in that: described No. 1 microphone (1), No. 2 microphones (2), No. 3 microphones (3) are connected with AD data acquisition module (7) through microphone pre-amplification circuit (5) respectively with No. 4 microphones (4), be connected by data wire is two-way between AD data acquisition module (7) and the DSP module (8) and between AD data acquisition module (7) and the FPGA module (9), be connected by data wire between DSP module (8) and the FPGA module (9), DSP module (8) is connected with FLASH module (11) with SDRAM module (10) respectively by data wire, DSP module (8) is connected with drive unit in the cradle head of two degrees of freedom (13) through The Cloud Terrace driver module (12) by control line, and cradle head of two degrees of freedom is equipped with camera head on (13).
2. a kind of video system with auditory localization function according to claim 1, it is characterized in that: described No. 1 microphone (1), No. 2 microphones (2), No. 3 microphones (3) and No. 4 microphones (4) are installed in respectively on four tripods that can stretch that are positioned at diverse location, and perhaps four microphones are installed on the tripod that can stretch.
3. a kind of video system with auditory localization function according to claim 1 is characterized in that: the air line distance in described No. 1 microphone (1), No. 2 microphones (2), No. 3 microphones (3) and No. 4 microphones (4) between adjacent two microphones equates.
4. a kind of video system with auditory localization function according to claim 1, it is characterized in that: described microphone pre-amplification circuit (5) is connected with gain control circuit (6), and gain control circuit (6) is connected with DSP module (8).
5. a kind of video system with auditory localization function according to claim 1 is characterized in that: two drive units installing in the described cradle head of two degrees of freedom (13) are respectively servomotor.
CN 201320130625 2013-03-21 2013-03-21 Video system having function of sound source location CN203151672U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103491301A (en) * 2013-09-18 2014-01-01 潍坊歌尔电子有限公司 System and method for regulating and controlling camera of electronic equipment
CN103888703A (en) * 2014-03-28 2014-06-25 深圳市中兴移动通信有限公司 Shooting method and camera shooting device with recording enhanced
CN104135653A (en) * 2014-08-15 2014-11-05 魏鹏 Sound localization and video linkage platform
CN104299284A (en) * 2014-08-20 2015-01-21 深圳供电局有限公司 Indoor transformer station track tour-inspection system capable of automatically positioning and grabbing equipment image, host and method
CN104735582A (en) * 2013-12-20 2015-06-24 华为技术有限公司 Sound signal processing method, equipment and device
CN105979126A (en) * 2016-06-13 2016-09-28 努比亚技术有限公司 Photographing device and photographing control method
CN106325142A (en) * 2015-06-30 2017-01-11 芋头科技(杭州)有限公司 Robot system and control method thereof
CN109151672A (en) * 2018-09-19 2019-01-04 西安交通大学 Audio source tracking system and its control method based on array microphone
CN111050063A (en) * 2019-03-29 2020-04-21 苏州浩哥文化传播有限公司 Automatic shooting method and system based on sound source identification

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103491301A (en) * 2013-09-18 2014-01-01 潍坊歌尔电子有限公司 System and method for regulating and controlling camera of electronic equipment
CN104735582B (en) * 2013-12-20 2018-09-07 华为技术有限公司 A kind of audio signal processing method, device and equipment
CN104735582A (en) * 2013-12-20 2015-06-24 华为技术有限公司 Sound signal processing method, equipment and device
CN103888703A (en) * 2014-03-28 2014-06-25 深圳市中兴移动通信有限公司 Shooting method and camera shooting device with recording enhanced
CN103888703B (en) * 2014-03-28 2015-11-25 努比亚技术有限公司 Strengthen image pickup method and the camera head of recording
CN104135653A (en) * 2014-08-15 2014-11-05 魏鹏 Sound localization and video linkage platform
CN104299284A (en) * 2014-08-20 2015-01-21 深圳供电局有限公司 Indoor transformer station track tour-inspection system capable of automatically positioning and grabbing equipment image, host and method
CN106325142A (en) * 2015-06-30 2017-01-11 芋头科技(杭州)有限公司 Robot system and control method thereof
CN105979126A (en) * 2016-06-13 2016-09-28 努比亚技术有限公司 Photographing device and photographing control method
CN109151672A (en) * 2018-09-19 2019-01-04 西安交通大学 Audio source tracking system and its control method based on array microphone
CN111050063A (en) * 2019-03-29 2020-04-21 苏州浩哥文化传播有限公司 Automatic shooting method and system based on sound source identification

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20130821

Termination date: 20160321