CN1628485A - Microphone equipped with a range finder - Google Patents
Microphone equipped with a range finder Download PDFInfo
- Publication number
- CN1628485A CN1628485A CNA028053001A CN02805300A CN1628485A CN 1628485 A CN1628485 A CN 1628485A CN A028053001 A CNA028053001 A CN A028053001A CN 02805300 A CN02805300 A CN 02805300A CN 1628485 A CN1628485 A CN 1628485A
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- Prior art keywords
- microphone
- signal
- measuring distance
- circuit
- microphone according
- Prior art date
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- 238000002604 ultrasonography Methods 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 241000030366 Scorpidinae Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/02—Microphones
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Circuit For Audible Band Transducer (AREA)
- Pens And Brushes (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Traffic Control Systems (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
A microphone is equipped with an element (13) for mesuring the distance to a sound emitter, for example the face of an artist. The distance measurement element (13) can be part of the acousto-electric transducer (7) of the microphone, and it can be a piezo-electric ultrasound echo range finder (15, 16).
Description
Technical field
The present invention relates to microphone, this microphone comprises a microphone case, one in the shell front portion, be used for receiving the acoustical-electrical transducer of sound from acoustic emitter, and be used for being sent to the device of the outer external voice signal handling equipment of microphone from the sound performance signal of transducer.
Background technology
Microphone is especially sung and used microphone, all has a problem usually: the distance of (for example artistical mouth) can influence the sound effect of microphone records from the microphone to the acoustic emitter.Microphone has dissimilar directional characteristics and dissimilar distance responses, and usually when the producer makes microphone, can be at certain parameter to guarantee its optimization.Therefore, for example can attempt to make a kind of special microphone that is used for very closely adopting sound, and other microphone manufactures all from farther distance and adopts sound.When actual use deviates from the use of original expectation a bit, the microphone that has carried out optimizing according to certain type of service will produce relatively poor sound effect, and sound effect may exaggerate S sound, obtain incorrect frequency response or the like.
Summary of the invention
Therefore, need one type of microphone more flexibly, for example a kind of can be at changing its microphone that adjusts to the most optimized parameter of the distance of acoustic emitter.Target of the present invention is to solve this difficult problem, and according to the present invention, provides the microphone described in introducing, and it is characterized in that, it has assembled and has been used to measure its element to the distance of acoustic emitter.
In an important embodiment of the present invention, the element that is used for measuring distance is included among the acoustical-electrical transducer.Afterwards, this transducer can be made up of the elasticity piezoelectricity tinsel in the framework around being suspended on, and has a block centerbody (massive centre body), and this bulk centerbody comprises the element that is used for measuring distance.
The element that is used for measuring distance can be the ultrasonic wave echo ranger.This ultrasonic wave echo ranger can comprise two piezoelectric elements, and one of them is used for to the narrow forward ultrasound beamformer of acoustic emitter emission, and another is used to receive the ultrasonic wave echo from acoustic emitter.
The element that is used for measuring distance also can be a laser range finder.
The internal layer of microphone case can comprise and be used to produce, explain respectively from circuit to the signal of the element of finding range.The part of this circuit can be used for producing ultrasonic vibration with excitation piezoelectric ultrasonic transmitter components, and these circuit other parts operationally receive and explain the signal that receives from the piezoelectric ultrasonic receiver element.
In addition, the part of this circuit is used for producing control signal launching laser from the laser diode of range finding element, and the other parts of this circuit operatively receive and explain reflected signal from laser detector in the range finding element.
In an embodiment of microphone of the present invention, this microphone comprises a circuit element that is used to use the distance that has measured, and described circuit element has at least one function in the following stated function group:
Stop to transmit sound performance signal from microphone,
Adjust as the gain factor of a function of measuring distance and
Adjust as the equalizer setting of a function of measuring distance.
In further embodiment according to microphone of the present invention, the circuit that is used for the element of measuring distance and is linked to each other also is used for by transferring to carry out sound detection to separating from the reflected signal of acoustic emitter, described reflected signal is a high-frequency signal, receives from acoustic emitter with from the stack sound of ambient noise to modulate.
Description of drawings
Below, the present invention will in depth discuss by the embodiment of example, here needs with reference to following accompanying drawing, wherein:
Fig. 1 has illustrated according to microphone of the present invention in having an embodiment of cable,
Fig. 2 shows according to the present invention, have the microphone of wireless transmitting system,
But Fig. 3 shows the identical microphone that does not have microphone case with Fig. 1,
Fig. 4 with details show Fig. 3 top view and
Fig. 5 shows the acoustic transducer of this microphone.
Embodiment
At first must be pointed out, below mentioned embodiment just explain an example of how realizing according to microphone of the present invention, and concrete restriction only should propose in appended independent claims.Therefore, microphone of the present invention does not point out how to handle the sound that picks up in detail in this microphone, do not point out how to handle sound from the equipment of the signal transmission of microphone by processing yet, how not point out from microphone transmission electroacoustic performance signal, for example by additional cable or pass through wireless transmitting system yet.Therefore, two embodiment according to microphone 1 of the present invention have been shown in Fig. 1 and 2, and, have passed through the transmission of wireless launcher 3 and antenna 4 (Fig. 2) respectively by signal cable 2 (Fig. 1).As for other, external details only has been shown in Fig. 1 and 2, and for the important details general Fig. 3 below of the present invention, shown in 4 and 5.
Illustrated among Fig. 3 consistent with the microphone shown in Fig. 1, but do not have microphone case 5 (Fig. 1, microphone Fig. 2).With microphone top 6 identical among Fig. 1 and Fig. 2 also shown in Fig. 3 and Fig. 4, and Fig. 3 and Fig. 4 also show acoustical-electrical transducer 7, this acoustical-electrical transducer is illustrated in greater detail in Fig. 5.Yes picks up from acoustic emitter (for example, from artistical mouth) by the air borne and the acoustic vibration of further propagating by lattice-shaped microphone top 6 for the major function of transducer 7.As shown, transducer 7 has external frame 8, and supports hardy at this by crossbeam 9 and inner frame 10.Have in the framework 10 and be shaped as fan-shaped in a large number and have the piezoelectric membrane tinsel of less radial slot between fan-shaped.In the center, tinsel 11 is connected to centerbody 13.When sound wave arrived fan-shaped tinsel film, these films can enter vibrational state, and such motion will cause producing voltage in the piezoelectricity tinsel.These voltages are by lead 14 outputs, and each tinsel has all assembled signal conductor separately.A transducer that can be used in the preferred embodiments of the present invention like this, submit to February 21 calendar year 2001 before this applicant, application number is to discuss in 09/788,607 the U.S. Patent application.Following mutation has been shown in this U.S. Patent application, has required its priority in the present invention:
In centerbody 13, placed piezoelectric element 15,16, one of them piezoelectric element 15 is used for the emission vibration, and another piezoelectric element is used to receive the vibration of emission.Lead to/not shown in Figure 5, but they defer to the path on the fan section 11: from centerbody 16 and outwards towards the signal conductor 17 shown in the figure from the signal conductor of piezoelectric element in the centerbody.Piezoelectric element 15 and 16 is the piezoelectric that is cast into (cast-in) " first quarter moon bright (half moons) " in this case.The mode of operation will be, for example, centerbody piezoelectric element emission dither, preferably scope is 5-10MHz (but being not limited in this scope), so that echo scanner is measured, do more accurate detection for motor pattern, might carry out the echo doppler analysis acoustic emitter.
Pick up the vibration of reflection by element 16.Very narrow and be directed from centerbody ultrasonic waves transmitted wave beam, for example can wear and penetrate from the center at microphone top 6, that is to say to wear and penetrated special centre bore.Two " crescent " piezoelectric elements 15 and 16 also can have parabola or approximate parabolical curvature, with emission and the corresponding directional reception that realizes narrow beam.
Different fan sections with sound receiving element of piezoelectricity tinsel 11 also can be used for transmitting and receiving, but seldom are used for microphone embodiment.The fan section of separating mainly provides the possibility of electronic signal combination, to eliminate external noise.
Another characteristics of converters are the fastening systems at central frame 10 downsides.The system of pillar 18 provides the support to trip bolt 19, this system can extract a segment distance to centerbody 13 downwards when work, with to exert an influence towards centerbody 13, downward-sloping position (impart), tinsel fan section 11 for central frame 10 inside, to make the whole movable part shape of some " parabola " more of transducer thus, and directed therefore and more.If central screw 19 forms until the positive engagement of centerbody 13 and wherein only have the rotation of adaptation at downside, with locked, and tinsel fan section 11 will be merely able to vibration between so fixing centerbody 13 and fixing inner frame 10 to centerbody 13 subsequently with respect to the vibration of vertical direction so.If but the elastic part that has been linked and packed between trip bolt 19 and the centerbody 13, then the whole system of tinsel fan section and centerbody will still have vibration mode in vertical direction, but this vibration has obtained correction under the influence that elasticity connects.
As mentioned, go to/be to send from the signal of active element in the transducer (active element) 11,15,16 along signal conductor 14,17 (Fig. 5), and go to/from the base unit shown in Fig. 3 20.This base unit can comprise signal handling equipment, and for example A/D converter is controlled/programmable equalizer, amplifier and miscellaneous equipment.On the other hand, if microphone is the cable connection type, so directly transmit by lead 2 go to/also be possible from the signal of active element.But, for the ranging system that this microphone assembled, need be included in the base element 20 especially, be used to piezoelectric element 15 to produce the internal circuit of ultrasonic signals, and be used to receive and explain the circuit that receives from the reflected signal of piezoelectric element 16.Base element 20 preferably includes the power supply of a battery forms, this power supply also will very be necessary for above mentioned other the possible circuit of operation, and in the situation of the radio switch of leading to external equipment (Fig. 2), also will very be necessary for the wireless launcher/receiver in the operating unit 3 (Fig. 2).In addition, be used for the circuit of rangefinder signal interpretation will (for example) by when the distance to acoustic emitter surpasses certain predetermined threshold value, stopping transmission from the sound performance signal of microphone, operatively use measurement result.Therefore, may use rangefinder to adjust the gain factor of incorporated amplifier, also can be used for the amplifier of external equipment, can be by such mode: long measuring distance will need to increase gain, and short distance then needs decay.In addition, can influence frequency curve, equalizer setting just is as a function of measuring distance, for example to the distance of acoustic emitter and some not known relation between desired frequency peak value or the frequency ramps occurs.
As for abating the noise, the centerbody with ranging system also has a dual-use function.This is a fact: after element 15 emissions, will being launched at the high-frequency ultrasonic signal that acoustic emitter is reflected, also will receive slower vibration overlappingly, just from the sound of the expectation of acoustic emitter and may be from some noises of surrounding environment.These slow acoustic vibrations (more precisely, be to be slow with respect to being used for the dither that actual range finding measures) can pass through signal processing, separate with dither, and can be they bases as the signal processing of the acoustical vibration that also picks up by tinsel fan section 11, especially for abating the noise and from the sound of not expecting of voice signal.Circuit in the base element 20 is also applicable to such function.
So far, the sound ultrasonic element that only is placed on the acoustic transducer center is mentioned as the range finding element.Also can place similar ultrasonic range finder in some other position on microphone, but have identical functions and the identical connection type that is connected to signal processing circuit.
The rangefinder of known another kind of type is to use the instrument of laser beam, and can be on the position identical with unit shown in Figure 5, just in the centerbody 13 of reality, a little laser diode is combined with micro-optic instrument (micro-optics).Laser beam (preferably the using infrared ray) respective openings by microphone top 6 subsequently is launched, and will and turn back to the photodetector of placing with laser from the acoustic emitter reflection.Such laser range finder also can be placed on the microphone some other place, and is for example peripheral.(such rangefinder can be a conversion unit.) but obviously, the center will be preferred.
At last, what must be mentioned is: the invention relates to complete microphone several the invention in one, these all inventions all side by side are used as the main body of patent application, can be with reference to being entitled as " A song microphone with signal processing equipment ", application number is 2,001 5983 Norwegian patent applications, be entitled as " A microphone with variableventilation ", application number is 2,001 5982 Norwegian patent applications, and is entitled as " Amicrophone with exchangeable details ", application number is 2,001 5984 Norwegian patent applications.These patent applications of submitting to have simultaneously shown the characteristics that can be used for explaining or finishing characteristics of the present invention to a certain extent, here by reference these applications are incorporated in this specification.
Claims (11)
1. microphone, it comprises microphone case, be positioned at this shell front portion, be used to receive acoustical-electrical transducer, and be used for and be sent to the device of the outer external voice signal handling equipment of microphone from the sound performance signal of described transducer from the sound of acoustic emitter
It is characterized in that described microphone is equipped with the element that is used to measure described emission source distance.
2. microphone according to claim 1,
It is characterized in that the described element that is used for measuring distance is included in described acoustical-electrical transducer.
3. microphone according to claim 2,
It is characterized in that described transducer is made up of the elasticity piezoelectricity tinsel that is suspended in the perimeter frame, and has block centerbody, described centerbody comprises the described element that is used for measuring distance.
4. according to the described microphone of claim 1,2 or 3,
It is characterized in that the described element that is used for measuring distance is a ultrasonic wave echo ranger.
5. microphone according to claim 4,
It is characterized in that described ultrasonic wave echo ranger comprises two piezoelectric elements, one of them is used for the narrow ultrasound beamformer of emission on the direction of acoustic emitter, and another is used to receive the ultrasonic wave echo from described acoustic emitter.
6. microphone according to claim 1,
It is characterized in that the described element that is used for measuring distance is a laser range finder.
7. microphone according to claim 1,
It is characterized in that, the internal layer of described shell comprises and is used to produce, explain respectively to and from the circuit of the signal of the described element that is used for measuring distance.
8. microphone according to claim 7,
It is characterized in that the part of described circuit operationally produces ultrasonic vibration, with excitation piezoelectric ultrasonic transmitter components, described circuit other parts operationally receive and explain the signal that receives from the piezoelectric ultrasonic receiver element.
9. microphone according to claim 7,
It is characterized in that the part of described circuit operationally produces control signal launching laser in the laser diode from described rangefinder, the other parts of described circuit operationally receive and explain reflected signal from laser detector in the described rangefinder.
10. microphone according to claim 1,
It is characterized in that, described microphone comprise one be used to use found range from circuit element, described circuit element has at least one function in the following stated function group:
Stop to transmit sound performance signal from described microphone,
Adjust as the gain factor of a function of measuring distance and
Adjust as the equalizer setting of a function of measuring distance.
11. microphone according to claim 1,
It is characterized in that, the described circuit that is used for the element of measuring distance and is linked to each other is also operationally by transferring to carry out sound detection to separating from the reflected signal of described acoustic emitter, described reflected signal is a high-frequency signal, reception is modulated from described acoustic emitter with from the sound of ambient noise, as a stack.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/NO2001/000064 WO2002000117A1 (en) | 2000-06-23 | 2001-02-21 | Two-way mechano-electrical transducer |
| NOPCT/NO01/00064 | 2001-02-21 | ||
| NO20015985A NO316560B1 (en) | 2001-02-21 | 2001-12-06 | Microphone with rangefinder |
| NO20015985 | 2001-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1628485A true CN1628485A (en) | 2005-06-15 |
Family
ID=26649028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA028053001A Pending CN1628485A (en) | 2001-02-21 | 2002-02-20 | Microphone equipped with a range finder |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1362497A1 (en) |
| JP (1) | JP2004526150A (en) |
| CN (1) | CN1628485A (en) |
| CA (1) | CA2439087A1 (en) |
| NO (1) | NO316560B1 (en) |
| WO (1) | WO2002074010A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107005761A (en) * | 2014-11-26 | 2017-08-01 | 索尼互动娱乐股份有限公司 | Message processing device, information processing system, control method and program |
| CN107615778A (en) * | 2015-04-13 | 2018-01-19 | Dscg史罗轩公司 | audio detection system and method |
| CN110572759A (en) * | 2019-08-30 | 2019-12-13 | Oppo广东移动通信有限公司 | Electronic device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20015982A (en) * | 2001-12-06 | 2003-04-07 | Meditron Asa | Microphone |
| NO314558B1 (en) * | 2001-12-06 | 2003-04-07 | Meditron Asa | sang Microphone |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1066823B (en) * | 1975-12-30 | 1985-03-12 | Sits Soc It Telecom Siemens | ELECTROACOUSTIC TRANSDUCER PARTICULARLY OF THE PIEZOCERAMIC LAMINA TYPE |
| US4586195A (en) * | 1984-06-25 | 1986-04-29 | Siemens Corporate Research & Support, Inc. | Microphone range finder |
| US4638207A (en) * | 1986-03-19 | 1987-01-20 | Pennwalt Corporation | Piezoelectric polymeric film balloon speaker |
| US4727279A (en) * | 1987-04-29 | 1988-02-23 | General Motors Corporation | Piezoelectric knock sensor |
| GB9314822D0 (en) * | 1993-07-17 | 1993-09-01 | Central Research Lab Ltd | Determination of position |
| US5901232A (en) * | 1996-09-03 | 1999-05-04 | Gibbs; John Ho | Sound system that determines the position of an external sound source and points a directional microphone/speaker towards it |
| DE19943872A1 (en) * | 1999-09-14 | 2001-03-15 | Thomson Brandt Gmbh | Device for adjusting the directional characteristic of microphones for voice control |
-
2001
- 2001-12-06 NO NO20015985A patent/NO316560B1/en unknown
-
2002
- 2002-02-20 WO PCT/NO2002/000071 patent/WO2002074010A1/en not_active Application Discontinuation
- 2002-02-20 CN CNA028053001A patent/CN1628485A/en active Pending
- 2002-02-20 EP EP02700906A patent/EP1362497A1/en not_active Withdrawn
- 2002-02-20 CA CA002439087A patent/CA2439087A1/en not_active Abandoned
- 2002-02-20 JP JP2002571746A patent/JP2004526150A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107005761A (en) * | 2014-11-26 | 2017-08-01 | 索尼互动娱乐股份有限公司 | Message processing device, information processing system, control method and program |
| CN107005761B (en) * | 2014-11-26 | 2020-04-10 | 索尼互动娱乐股份有限公司 | Information processing apparatus, information processing system, control method, and program |
| CN107615778A (en) * | 2015-04-13 | 2018-01-19 | Dscg史罗轩公司 | audio detection system and method |
| US10582311B2 (en) | 2015-04-13 | 2020-03-03 | DSCG Solutions, Inc. | Audio detection system and methods |
| CN107615778B (en) * | 2015-04-13 | 2020-10-30 | Dscg史罗轩公司 | Audio detection system and method |
| CN110572759A (en) * | 2019-08-30 | 2019-12-13 | Oppo广东移动通信有限公司 | Electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1362497A1 (en) | 2003-11-19 |
| WO2002074010A1 (en) | 2002-09-19 |
| JP2004526150A (en) | 2004-08-26 |
| NO316560B1 (en) | 2004-02-02 |
| CA2439087A1 (en) | 2002-09-19 |
| NO20015985L (en) | 2002-08-22 |
| NO20015985D0 (en) | 2001-12-06 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |