CN103024625A - High precision acoustic senseing device and acoustic camera using microphone array - Google Patents
High precision acoustic senseing device and acoustic camera using microphone array Download PDFInfo
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- CN103024625A CN103024625A CN2012104775039A CN201210477503A CN103024625A CN 103024625 A CN103024625 A CN 103024625A CN 2012104775039 A CN2012104775039 A CN 2012104775039A CN 201210477503 A CN201210477503 A CN 201210477503A CN 103024625 A CN103024625 A CN 103024625A
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- sound equipment
- microphone
- induction installation
- microphone array
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/04—Microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/003—Mems transducers or their use
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Multimedia (AREA)
- Circuit For Audible Band Transducer (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The invention relates to a high precision acoustic sensing device using a microphone array. A plurality of MEMS microphones (10) are arranged in a printed circuit board (20). The invention also relates to an acoustic camera using the microphone array, comprising an acoustic sensing device (30) arranged on the printed circuit board (20) by the plurality of microphones (10); a data collection part (40) for sampling analog signals related with the acoustic sound from the acoustic sensing device (30) and converting the analog signals into digital signals and sending out the digital signals to a central processor (50); the central processor (50) for calculating noise levels respectively related with each microphone (10); a display part (60) for displaying the noise levels respectively related with each microphone (10) and calculated by the central processor (50) in different colors. The high precision acoustic sensing device and the acoustic camera using the microphone array can be used for electronic equipment produced by the existing microphones, such as mobile phones.
Description
Technical field
The present invention relates to a kind of high-accuracy sound equipment induction installation and sound equipment video camera, relate in particular to a kind of high-accuracy sound equipment induction installation and sound equipment video camera that utilizes microphone array.
Background technology
The sound equipment video camera is the high-end measuring equipment with the sound visualization, is the new technical equipment in multiple fields necessity such as multimedia communication for intelligence device, household electrical appliances, automobile and construction.
Korean granted patent 10-051120(applicant: Korea Advanced Institute of Science and Technology) disclose a kind of duration of a sound separation method that utilizes indivedual sources of sound of sound equipment acoustic holography, comprise the phase I, in hologram, measure the sound press of a plurality of points, obtain the hologram frequency spectrum ranks that frequency spectrum and the phase cross-spectrum between other points by described each point sound press value consist of; Second stage is applied to described hologram frequency spectrum ranks on the sound equipment holography method, obtains the hologram frequency spectrum ranks that are made of the phase cross-spectrum between the frequency spectrum of described each point sound press value and other points at the source of sound face; Phase III in the described source of sound face frequency spectrum ranks, is the maximum spectrum position of sound press value sound source position, calculates the above-mentioned source of sound contribution amount that is determined; The quadravalence section, in described source of sound face frequency spectrum ranks, when also having the frequency spectrum ranks except described definite source of sound, described remaining frequency spectrum ranks are updated to new source of sound face frequency spectrum ranks, and repeatedly carry out the phase III process.
Korean granted patent 10-0217872(applicant: Korea Advanced Institute of Science and Technology) disclose a kind of hologram of measurement pan that passes through the system and method for acoustic characteristic screen, utilize the source of sound of surrounding space emittance to have arbitrarily wavelength and arbitrarily acoustic characteristic, after together obtaining hologram in the mobile arbitrarily hologram page with described source of sound, utilize the system of its hologram acoustic characteristic image of a characteristic predetermined value of budget in the duration of a sound, comprise, source of sound moves the mensuration means, measure direction and speed that the described duration of a sound moves in described space, take in means; Mobile in described space, leave than a plurality of positions of half little spacing configuration in upright arrangement of the wavelength of described acoustic characteristic from the rectangular direction of described moving direction and to take in the energy of described source of sound radiation, and produce described energy signal; The multiple means of delivering letters, be used for a plurality of input signals by the multiple output of single outlet line, wherein a plurality of input signals comprise the described moving direction of taking in means, translational speed and the described signal that produces from accommodating means, and the described source of sound moving direction and the translational speed that move the input of mensuration means from described source of sound; The computing means are used for from measuring the acoustic characteristic predicted value in the acoustic characteristic value computing duration of a sound, and described mensuration acoustic characteristic value obtains from described multiple described hologram page of delivering letters means output; Described computing means are determined relative coordinate system, described relative coordinate system comprises the hologram coordinate system and takes in coordinate system, wherein translational speed and the consistent movement of moving direction of the described source of sound in described space, measured with described source of sound traverse measurement means of hologram coordinate system, describedly accommodate coordinate system movement consistent with described translational speed of accommodating means and moving direction in described space, described computing means the described multiple means of delivering letters send about described information of accommodating means, acoustic characteristic predetermined value in the computing duration of a sound, the wherein said relevant information of means of taking in is with described coordinate figure output of taking in coordinate system
Korean granted patent 10-0838239(patentee :) a kind of tonequality display unit is disclosed, comprising: the sound equipment induction part, for the sound equipment of induction source of sound sounding; Photography section is used for the background of producing described sound source position; The sound source signal generating unit, to the signal of described sound equipment induction part induction change in order, velocity of wave be shaped (, inverse operation, be created on acoustic signal and the time signal of the source of sound face that is provided with described source of sound; Tonequality data generating unit, described sound source signal is carried out 1/3 octave analyzing and processing in order, the loudness weight is used and is processed, and determines that from certain Sonority norm Sonority norm calculates whole loudness, and the tonequality data of described source of sound face is generated as the loudness of Quantitative Factors; Display part shows the portrait data of the described photography of covering section shooting and the tonequality portrait data that described tonequality data generate.
Korean Patent 10-2009-0047507 discloses
Noise source visualization device and method for visualizing, noise source visualization device wherein, comprise: at least two picture induction parts, in order to measure the noise source acceleration of accelerated motion, in the mutually corresponding setting of same optical axis, detect described noise source and change by the light quantity that optical axis causes, thus the time signal when generating described noise source by described optical axis; The microphone array induction part is used for the noise that induction produces from described noise source, and produces the sound press signal; Data Collection section, with described picture induction part be connected the microphone array induction part and be connected, and collect described time signal and described sound press signal; Central processing department, be connected with described Data Collection section, receive described time signal and described sound press signal from described Data Collection section, set hypothesis source of sound plane in the side at a small amount of position of described noise source, the sound press signal of each network on described hypothesis source of sound plane is generated as the output corresponding with described sound press signal.
Capacitive microphone on silicon substrate surmounts the basic boundary of existing electret capacitor microphone generally speaking.Jolting plate carries out machinery or electricity reaction in microphone, described jolting plate is made of inductors such as polysilicon or silicon nitride film or silicon oxide layers, in-40 ℃ to+120 ℃ temperature range, have reliability, in the complicated environment that changes of humidity and temperature, reliability is arranged also simultaneously.Use the microphone of silicon substrate also can use above under 260 ℃ the smokeless surface-mounted temperature.This high reliability and surface-mountedly be enough to expression and surpassed existing ECM.EMC is only suitable for the parcel of can shape, but the MEMS microphone then the user can wrap up according to demand, this meets the microphone applications field of Modern Small, directization.The MEMS microphone is being introduced certain DC(direct current between jolting plate and the datum plate) under the state of bias voltage, the capacitance that induction changes according to the sound press of coming in.The MEMS microphone can manufacture less than the small-sized electret capacitor microphone of major part, and can be too inresponsive to the interference of mechanical oscillation, variations in temperature or electromagnetic field.Since this specific character, extensive use in the sound recording devices such as hearing aids, electrostethophone, mobile phone and notebook computer, portable equipment for taking photograph machine.
In sum, microphone array is a method of correcting the noise source position, and majority is the sound wave that utilizes microphone induction installation measurement noise source to produce, and by the processing to described signal, visualization processing is carried out in distribution to noise source.The characteristic of the signal that transmits according to each microphone reconstructs the signal that the particular utterance position produces, and measures its sound press size, and the sound press level of measurement illustrates with spatial distribution, chases after to decide the noise source position.Although the sound equipment video camera is measured skill and technique and developed for the research and development purpose of specific area, owing to having advantages of the distribution that intuitively to determine noise source, be applicable to widely the research and development stage of each industry.The microphone of research display is measured in the example in overseas, with in the experiment photo together illustrated noise source distribution map, generally represents very strong noise with red part in the noise-measuring environment, and the user can intuitively grasp by motion pattern the generating source of noise.
Existing product uses the measurement microphone of more than 30 high price, uses the DATA REASONING equipment of high price thereupon, complex structure, and price is high, is equivalent to approximately 100,000,000 won more than.
Therefore, there is defective in prior art, needs to improve.
Summary of the invention
The present invention is for a kind of high-accuracy sound equipment induction installation and sound equipment video camera that utilizes microphone array is provided, and can be used for the electronic equipment that the existing microphone such as mobile phone is made into.
The present invention is for a kind of high-accuracy sound equipment induction installation and sound equipment video camera that utilizes microphone array being provided, utilizing microphone to reform existing sound equipment video camera, and is made into microphone substrate form and uses, and has greatly improved Production Time and manufacturing cost.
The present invention is for a kind of high-accuracy sound equipment induction installation and sound equipment video camera of the MEMS of utilization microphone array are provided, utilize PCB to block the front/rear phonetic aspect of a dialect, improved the function of removing reflected wave, the sound equipment video camera changed into from the measurement of original high price equipment approach the popular equipment of measuring, can develop new market.
A kind of high-accuracy sound equipment induction installation that utilizes microphone array wherein, arranges a plurality of MEMS microphones (10) in printing loop substrate (20).
The described high-accuracy sound equipment induction installation that utilizes microphone array, wherein, microphone (10) has along radial direction expands 2-30 alar part.
The described high-accuracy sound equipment induction installation that utilizes microphone array, wherein, described alar part is arranged 2-30 microphone (10).
The described high-accuracy sound equipment induction installation that utilizes microphone array, wherein, described microphone (10) is with the radial direction linear array, or extends and be the crooked spiral-shaped arrangement of a direction of rotation along radial direction.
A kind of high-accuracy sound equipment video camera that utilizes microphone array, wherein, comprise: sound equipment induction installation (30), be arranged on the printing loop substrate (20) by a plurality of microphones (10), described sound equipment induction installation (30) is used for the acoustic signal of induction is sent to Data Collection section (40); Data Collection section (40), be connected with described sound equipment induction installation (30), the relevant analog signal of sound equipment that described Data Collection section (40) is used for sound equipment induction installation (30) is sent is sampled, and is converted to digital signal, and sends to central processing department (50); Central processing unit (50), be connected with Data Collection section (40), the relevant digital signal of sound equipment that described central processing unit (50) is used for sending take described Data Collection section (40) is the basis, calculates the related noise level of each microphone (10); Display part (60) is connected with central processing unit (50), and the relevant noise level of each microphone (10) that described display part (60) is used for described central processing unit (50) is calculated shows with different colours.
The described high-accuracy sound equipment video camera that utilizes microphone array, wherein, described MEMS microphone (10) has along radial direction expands 2-30 alar part, described alar part is arranged 2-30 microphone (10), described microphone (10) is along the radial direction linear array, or extends the helical pattern that is a direction of rotation bending along radial direction.
Be useful in the product that MEMS microphone of the present invention has increased substantially needs the sound equipment video camera of a plurality of electronic chip form microphones.Utilize the MEMS microphone can realize the lightweight volume production, guarantee international competitiveness.
A kind of high-accuracy sound equipment induction installation and sound equipment video camera that utilizes the MEMS microphone array provided by the invention can be used for the electronic equipment that the existing microphone such as mobile phone is made into.
A kind of high-accuracy sound equipment induction installation and sound equipment video camera that utilizes the MEMS microphone array provided by the invention, utilize the MEMS microphone to reform existing sound equipment video camera, and be made into MEMS microphone PCB form and use, greatly improved Production Time and manufacturing cost.
A kind of high-accuracy sound equipment induction installation and sound equipment video camera that utilizes the MEMS microphone array provided by the invention, utilize PCB to block the front/rear phonetic aspect of a dialect, improved the function of removing reflected wave, the sound equipment video camera changed into from the measurement of original high price equipment approach the popular equipment of measuring, can develop new market.
Description of drawings
Fig. 1 a is the high-accuracy sound equipment induction installation one example structure figure that the present invention utilizes the MEMS microphone array;
Fig. 1 b is high-accuracy another example structure of sound equipment induction installation figure that the present invention utilizes the MEMS microphone array;
Fig. 2 is the high-accuracy sound equipment camera configuration figure that the present invention utilizes the MEMS microphone array.Description of reference numerals
10:MEMS microphone 20: printing loop substrate 30: sound equipment induction installation 40: Data Collection section 50: central processing department 60: display part
Embodiment
Describe high-accuracy sound equipment induction installation and the sound equipment video camera that utilizes the MEMS microphone array in detail below with reference to accompanying drawing.Shown in Fig. 1 a to Fig. 1 b, the high-accuracy sound equipment induction installation that utilizes the MEMS microphone array of embodiment of the present invention is set on the printing loop substrate 20 by a plurality of MEMS microphones 10 and consists of.Printing has the loop in the loop substrate 20, and described loop comprises the output loop of the signal of telecommunication that produces from the acoustic signal of induction such as the electric power loop that power supply is provided or output.
By output loop the signal of telecommunication of sound equipment about output is sent to Data Collection section 40, and middle by signal amplifier, increase signal of telecommunication size.Signal amplifier can arrange separately, also can form with printing loop substrate 20 one of carrying MEMS microphone 10.
MEMS microphone of the present invention is applied in the products such as mobile phone, certainly also be not limited to this, existing microphone is made into the electrical chip form, all general MEMS microphones of commercialization (for example capacitor type silicon MEMS microphone, capacitor type microphone) etc. when comprising the present patent application.Now, along with the development of microphone techniques, its performance is developed by leaps and bounds, and shows the optimum performance of measuring with in the microphone.
Shown in Fig. 1 a to Fig. 1 b, in the sound equipment induction installation that utilizes the MEMS microphone array of the present invention, MEMS microphone 10 has along radius rectangle direction expands 2-30 alar part, and an alar part is arranged 2-30 MEMS microphone 10.Count increase data processing amount is increased along with alar part and microphone, simultaneously echo measurement degree increases.
In the sound equipment induction installation that utilizes the MEMS microphone array according to embodiment of the present invention, the MEMS microphone 10 of arranging at alar part is the (not shown) with the radial direction linear array, or shown in Fig. 1 a to Fig. 1 b, more extend more thereupon spiral-shaped arrangement to a direction of rotation bending to radial direction.
As shown in Figure 2, be that the sound equipment video camera that utilizes the MEMS microphone array of execution mode comprises sound equipment induction installation 30, Data Collection section 40, central processing unit 50 and display part 60 according to the present invention.
Sound equipment induction installation 30 as shown in Figure 2 is arranged on the printing loop substrate 20 by a plurality of MEMS microphones 10, and described sound equipment induction installation 30 is used for the acoustic signal of induction is sent to Data Collection section 40.
Data Collection section 40 as shown in Figure 2 is connected with sound equipment induction installation 30, and the relevant analog signal sample conversion of sound equipment that described Data Collection section 40 is used for sound equipment induction installation 30 is sent is digital signal, and sends to central processing department 50.
Central processing unit 50 is connected with Data Collection section 40, and described central processing unit 50 is used for the relevant digital signal of sound equipment that described Data Collection section 40 is sent for the basis, calculates the noise level that each MEMS microphone 10 is associated.
Display part 60 is connected with central processing unit 50, and each MEMS microphone 10 relevant noise level that described display part 60 is used for described central processing unit 50 calculating show with different colours.Display part 60 can be common display or other display equipment.
As previously mentioned, MEMS microphone 10 has along radius rectangle direction expands 2-30 alar part, an alar part is arranged 2-30 MEMS microphone 10, be arranged in the MEMS microphone 10 of an alar part along the radial direction linear array, or be crooked helical pattern to radial direction one direction of rotation.
Although the present invention illustrates by above-described embodiment, is not limited to above-described embodiment, scope of the present invention is determined by claim, and comprises multiple modification or the distortion that is equal to the present invention.
The reference numeral that claim is put down in writing only is to understand the present invention for auxiliary, can't cause restriction to the explanation of claim, more can not cause interest field to narrow down because of reference numeral.
Claims (6)
1. a high-accuracy sound equipment induction installation that utilizes microphone array is characterized in that, a plurality of MEMS microphones (10) is set in printing loop substrate (20).
2. the high-accuracy sound equipment induction installation that utilizes microphone array according to claim 1 is characterized in that, microphone (10) has along radial direction expands 2-30 alar part.
3. the high-accuracy sound equipment induction installation that utilizes microphone array according to claim 2 is characterized in that, described alar part is arranged 2-30 microphone (10).
4. the high-accuracy sound equipment induction installation that utilizes microphone array according to claim 3 is characterized in that, described microphone (10) is with the radial direction linear array, or extends and be the crooked spiral-shaped arrangement of a direction of rotation along radial direction.
5. a high-accuracy sound equipment video camera that utilizes microphone array is characterized in that, comprising:
Sound equipment induction installation (30) is arranged on the printing loop substrate (20) by a plurality of microphones (10), and described sound equipment induction installation (30) is used for the acoustic signal of induction is sent to Data Collection section (40);
Data Collection section (40), be connected with described sound equipment induction installation (30), the relevant analog signal of sound equipment that described Data Collection section (40) is used for sound equipment induction installation (30) is sent is sampled, and is converted to digital signal, and sends to central processing department (50);
Central processing unit (50), be connected with Data Collection section (40), the relevant digital signal of sound equipment that described central processing unit (50) is used for sending take described Data Collection section (40) is the basis, calculates the related noise level of each microphone (10);
Display part (60) is connected with central processing unit (50), and the relevant noise level of each microphone (10) that described display part (60) is used for described central processing unit (50) is calculated shows with different colours.
6. the high-accuracy sound equipment video camera that utilizes microphone array according to claim 5, it is characterized in that, described MEMS microphone (10) has along radial direction expands 2-30 alar part, described alar part is arranged 2-30 microphone (10), described microphone (10) is along the radial direction linear array, or extends the helical pattern that is a direction of rotation bending along radial direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120097038A KR101213539B1 (en) | 2012-09-03 | 2012-09-03 | Acoustic senseing device and acoustic camera using mems microphone array |
| KR10-2012-0097038 | 2012-09-03 |
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| Publication Number | Publication Date |
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| CN103024625A true CN103024625A (en) | 2013-04-03 |
| CN103024625B CN103024625B (en) | 2018-04-17 |
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| CN201210477503.9A Active CN103024625B (en) | 2012-09-03 | 2012-11-21 | A kind of sound equipment sensing device and sound equipment video camera using microphone array |
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| CN (1) | CN103024625B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109863375A (en) * | 2016-09-22 | 2019-06-07 | 寂静声学公司 | The method of acoustics photographic device and the sound emission for disclosing various positions and equipment |
| CN110189686A (en) * | 2018-11-21 | 2019-08-30 | 友达光电股份有限公司 | Display device |
| CN111033612A (en) * | 2017-08-31 | 2020-04-17 | 三星电子株式会社 | Household appliance with voice recognition function |
| CN111936829A (en) * | 2018-03-28 | 2020-11-13 | 日本电产株式会社 | Acoustic analysis device and acoustic analysis method |
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| EP3012650B1 (en) * | 2013-06-21 | 2021-06-09 | SM Instruments Co., Ltd. | Mobile acoustic source tracking sensor and manufacturing method |
| KR101471299B1 (en) * | 2013-08-19 | 2014-12-10 | (주)에스엠인스트루먼트 | Portable Acoustic Camera |
| KR20200109079A (en) | 2019-03-12 | 2020-09-22 | 현대자동차주식회사 | System and method for detecting air leak in commercial vehicle |
| KR102503404B1 (en) | 2021-05-16 | 2023-02-24 | (주)에스엠인스트루먼트 | Method and AI Acoustic Camera |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103024625B (en) | 2018-04-17 |
| KR101213539B1 (en) | 2012-12-18 |
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