EP1465453A2 - Automatischer Mikrofonabgleich bei einem Richtmikrofonsystem mit wenigstens drei Mikrofonen - Google Patents
Automatischer Mikrofonabgleich bei einem Richtmikrofonsystem mit wenigstens drei Mikrofonen Download PDFInfo
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- EP1465453A2 EP1465453A2 EP04004215A EP04004215A EP1465453A2 EP 1465453 A2 EP1465453 A2 EP 1465453A2 EP 04004215 A EP04004215 A EP 04004215A EP 04004215 A EP04004215 A EP 04004215A EP 1465453 A2 EP1465453 A2 EP 1465453A2
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- European Patent Office
- Prior art keywords
- microphone
- directional
- microphones
- order
- omnidirectional
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- 238000000034 method Methods 0.000 claims abstract description 41
- 230000010363 phase shift Effects 0.000 claims description 11
- 230000008054 signal transmission Effects 0.000 claims description 4
- 230000006870 function Effects 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 208000032041 Hearing impaired Diseases 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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Classifications
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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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
- H04R25/356—Amplitude, e.g. amplitude shift or compression
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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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/40—Arrangements for obtaining a desired directivity characteristic
- H04R25/407—Circuits for combining signals of a plurality of transducers
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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
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
- H04R29/005—Microphone arrays
- H04R29/006—Microphone matching
Definitions
- the invention relates to a method for automatic microphone matching in a directional microphone system with at least three omnidirectional microphones, being used to generate a directional characteristic two omnidirectional microphones each to one first or a second directional microphone of the first order are connected.
- the invention further relates to a directional microphone system with at least a first, a second and a third omnidirectional Microphone, the first and second omnidirectional Microphone to a first directional microphone first Order and the second and third omnidirectional microphone to a second first-order directional microphone are connected.
- WO 00/76268 A2 is a hearing aid with three omnidirectional Microphones known. Two microphones each by inverting and delaying that generated by a microphone Microphone signal and subsequent addition of both Microphone signals each formed a first-order directional microphone. Likewise, by delaying and inverting the formed by a directional microphone of the first order microphone signal and subsequent addition with one of another Directional microphone first-order microphone signal a directional microphone with directional characteristics of the second order (Second-order directional microphone).
- DE 198 22 021 A1 describes a hearing aid with automatic Microphone adjustment and a method for operating such Known hearing aid.
- the known hearing aid is a Difference element for subtracting mean values of the output signals the microphones and one the difference element downstream analysis / control unit for controlling the gain the output signal of at least one microphone is provided.
- the gain is regulated in such a way that that the mean values of the microphone signals are in agreement to be brought.
- the microphone adjustment only the amplitudes of the microphones adjusted.
- a disadvantage of the known methods for microphone matching with directional microphones is their insufficient effect in the case of microphone mismatches, which in particular through aging and Pollution effects are caused.
- the object of the present invention is therefore a method for automatic microphone adjustment in a directional microphone system and to specify a directional microphone system that without external assistance even during normal operation of the directional microphone system an adjustment of the amplitude response as well enable the phase response of the microphones of the directional microphone system.
- a directional microphone system with at least a first, a second and a third omnidirectional microphone, two omnidirectional Microphones to a first directional microphone of the first order and a second first-order directional microphone are connected, with level measuring devices for determining the time-averaged signal level that of the omnidirectional Microphones and that of the directional microphones of the first order generated microphone signals are present, one Amplitude control device for setting the amplitudes at at least two of the three from the omnidirectional microphones generated microphone signals depending on the determined Signal level is present and being a phase control device for adjusting the phase of at least one omnidirectional Microphone generated microphone signal depending that of the level measuring devices for directional microphones first order determined signal level is present.
- At least three omnidirectional Microphones can be directional microphones with directional characteristics second and higher order (directional microphones second and higher order) are formed.
- a first order directional microphone through electrical Interconnection of two first-order directional microphones is a directional microphone second order, etc.
- a microphone signal is usually inverted and delayed and to another microphone signal same order added.
- the invention provides a first step Amplitude adjustment of the omnidirectional microphones the microphone system generated before. For amplitude adjustment becomes a measure of the microphone signals the time-averaged sound field energy from the microphone signals won. The microphone signals are then compared in such a way that after the comparison, the time-averaged Sound field energy for all microphone signals at least approximately matches. As a measure of the time-averaged The signal level is preferably used for sound field energy. however other dimensions, e.g. the RMS value. A control or regulation of the respective measure of time obtained from a microphone signal averaged sound field energy. For example individual microphone signals multiplied by a factor or filtered. The amplification of the microphones can also be used downstream amplifiers can be changed.
- the first Method step or the entire method according to the invention can be narrowband in several channels or also perform broadband.
- the first process step causes that from a certain Set the amplitudes of the in the signal paths of the microphones Microphone signals are balanced.
- a second-order directional microphone system at least two first order directional microphones are required. These, in turn, can at least be connected in pairs three omnidirectional microphones.
- the amplitudes of the three omnidirectional microphones are as described above, compared in a first process step.
- the directional microphones become the first from the microphone signals Order a measure of the time-averaged sound field energy, e.g. the signal level, obtained and adjusted.
- the difference to the omnidirectional microphone signals here, however, the adjustment is not by an amplitude or Gain adjustment of the microphone signals of the directional microphones first order, but by phase shift at least one generated by an omnidirectional microphone Microphone signal.
- the phase of this microphone signal becomes like this varies long until the first order directional microphones in their Match the amplitude response as exactly as possible. Because the omnidirectional The amplitudes of microphones are already on top of each other are tuned, the amplitudes of the directional microphones are correct first order only exactly if the phase shift between two omnidirectional microphones, which interconnects to a first-order directional microphone system are match. This creates in her Signal transmission behavior largely symmetrical directional microphones first order.
- the invention offers the advantage that in a directional microphone system higher order required phase adjustment individual microphones on a relatively easy to implement Amplitude adjustment is fed back. Farther can the microphone balance during normal operation of the Directional microphone system. Beyond that too multiple signal sources available during microphone adjustment and be arranged anywhere in the room.
- the method can be analogous to higher directional microphone systems Order to be expanded.
- the procedure is also not up three omnidirectional microphones limited as signal inputs. So even with more than three omnidirectional Microphones Directional microphones of the first (and higher) order formed and be matched.
- the invention is carried out in usually not an absolute phase adjustment, but a relative one Phase adjustment for microphone pairs that form a Microphones of the next higher order are interconnected become.
- the process can be broadband or narrowband in only one frequency range or several parallel frequency channels be carried out.
- Directional microphone system makes it easier to carry out a procedure according to the invention. This is how the sound inlet openings are of the omnidirectional microphones advantageous on a straight line, with adjacent sound inlet openings each have the same distance from each other. Then have to e.g. differences in runtime caused by the geometry of the individual microphone signals for microphone adjustment are not excluded become. Since in the method according to the invention the time-averaged sound field energy from the microphone signals is determined and compared, runtime differences play no role that arise, for example, that a microphone with a related to a signal source a sound signal further ahead receives earlier than a microphone with one further back lying sound inlet opening.
- the procedure for matching the relative phase error between individual microphone pairs can be expanded to that also the absolute phase position of individual microphones or directional microphones aligned with the same order becomes. This is said to be without limitation to the general public adjusted according to the method described at the beginning First order directional microphones are described below.
- a first and a second directional microphone of the first order be compared according to the procedure described above. It is also assumed that in the rear area a hearing aid wearer, ie in the range between 90 ° and 270 ° related to the straight line of sight (0 ° direction) there is at least one source of interference, of which in real Ambient situations can almost always be assumed. Then the phase in the microphone signal of an omnidirectional Microphones of the first directional microphone in a restricted Value range changed so that the amplitude the microphone signal of the first directional microphone of the first order versus the amplitude of the microphone signal of the second Directional microphones of the first order reduced.
- the restricted The range of values for the phase shift is defined in such a way that the cut in the sensitivity of the directional microphone (Notch) due to the phase shift in the rear area remains between 90 ° and 270 °.
- the Phase set so that the amplitude of the microphone system of the first directional microphone of the first order a minimum in comparison to the amplitude of the second microphone signal Directional microphones of the first order.
- the notch in the first directional microphone system is set so that an interference signal (or interference signals) from the rear area is suppressed as best as possible.
- a phase shift in the microphone signal of an omnidirectional microphone of the second directional microphone first order is set such that the two Directional microphones of the first order are adjusted again.
- the procedure described above can also do this be modified that the phase in the microphone signal one omnidirectional microphone of the first directional microphone only a little step in the direction is changed that the amplitude of the first directional microphone of the first order compared to the amplitude of the second directional microphone first Order reduced.
- the step size can be like this, for example be adjusted that with every step a shift des Notches by 2 °.
- the two Directional microphones of the first order again adjusted as described above. This procedure is repeated until the amplitude in the microphone signal of the first directional microphone first order compared to the amplitude of the microphone signal of the second directional microphone of the first order is only insignificant can be reduced. Both directional microphones are then optimal aligned to the interference signal or the interference signals.
- FIG. 1 shows one of three omnidirectional microphones 1, 2 and 3 built-in directional microphone system with directional characteristics second-order (second-order directional microphone system).
- the two omnidirectional microphones 1 and 2 form a first Directional microphone of the first order.
- This becomes omnidirectional Microphone 2 resulting microphone signal in one Delay element 4 is delayed and in an inverter 5 inverted before passing through the summer 8 to the microphone signal of the omnidirectional microphone 1 is added.
- the microphone signal of the omnidirectional microphone 3 delayed in a delay element 6, in an inverter 7 inverted and in a summer 9 to the microphone signal of the omnidirectional microphone 2 added.
- the omnidirectional Microphones 2 and 3 will also become Microphone signal from the two omnidirectional microphones 2 and 3 formed second directional microphone of the first order delayed in a delay element 10, in an inverter 11 inverted and finally in a summer 12 to the Microphone signal from the first and second omnidirectional Microphone formed first directional microphone of the first order added.
- FIG. 2 also shows a directional microphone system second order, which consists of only three omnidirectional Microphones 21, 22 and 23 is constructed and thereby in particular the limited space for use in one Hearing aid takes into account.
- a directional microphone system second order which consists of only three omnidirectional Microphones 21, 22 and 23 is constructed and thereby in particular the limited space for use in one Hearing aid takes into account.
- From the pair of microphones 21, 22 is delayed by the omnidirectional microphone 22 generated microphone signal and inverting in a delay and inverter unit 24 and subsequent summation to the microphone signal generated by the omnidirectional microphone 21 in the adder 25 a first directional microphone first Order formed.
- the microphone pair 22, 23 also forms by delaying and inverting that of the omnidirectional Microphone 23 generated microphone signal in the delay and inverter unit 26 and subsequent addition of the microphone signal generated by the omnidirectional microphone 22 in the summer 27 a second directional microphone first Order.
- the signal delays in the delay and inverter units 24 and 26 initially set the same.
- the amplitudes of the three omnidirectional Microphones 21, 22 and 23 generated generated microphone signals are to an amplitude control device 31. This controls existing in at least two of the three microphone signal paths Multipliers 32 and 33 so that deviations from the Microphone signals determined time-averaged signal levels be balanced. This makes the amplitude response of the three omnidirectional microphones 21, 22 and 23 aligned.
- the Control unit 36 controls a phase compensation filter 38, by the one phase shift in that of the omnidirectional Microphone 22 generated microphone signal set such that of the two level measuring devices 34 and 35 measured the same time-averaged signal levels become. This means that in the two microphone pairs existing phase error becomes equal (relative phase adjustment). By the same signal transmission behavior the two microphone pairs are therefore ideal for forming one Directional microphones are suitable. This can be done by the second directional microphone of the first order generated microphone signal delayed in the delay and inverter unit 39 and in the summer 40 to the microphone signal of the first Directional microphones of the first order can be added.
- the invention offers the advantage that the phase adjustment of the Microphones on an easy to implement amplitude adjustment was returned.
- the comparison can be under real Ambient conditions take place, with any number of sound sources may be present.
- a continuation of the inventive method sees before that after the microphone adjustment carried out so far the phase of that of the omnidirectional microphone 21 generated microphone signal by controlling the phase compensation unit 37 set by the control unit 36 in this way will that at the by the level meters 34 and 35 measured signal level of the directional microphones first Order of the signal levels of the first directional microphone opposite the signal level of the second directional microphone is reduced.
- this reduction is due to the fact that the notch of the first directional microphone of the first order, that means the incision in the directional characteristic that the Direction of least sensitivity shows better on the or those that exist in the respective environmental situation Is targeted.
- the phase variation is on limited a range of values so that the notch only in a certain angular range can be set, e.g. between 90 ° and 270 ° related to the straight line of sight a hearing aid wearer (0 ° direction).
- the Phase compensation unit 38 set so that the signal level the microphone signals of the directional microphones of the first order match again as closely as possible, i.e. the second Directional microphone of the first order is connected to the first directional microphone again first order adjusted.
- the procedure described last can be used to adjust the microphone be run through once, the phase shift is set in the specified range of values so that the signal level of the first directional microphone compared to the Signal level of the second directional microphone is minimal.
- the first Directional microphone is then optimal to the interference signals in the adapted to the special environmental situation and the second microphone is then updated accordingly. adversely however, this is the additional effort that is involved to determine the minimum. Therefore one sees alternative embodiment before that the notch of the first Directional microphones of first order gradually in small steps, e.g. 2 °, is rotated in the direction in which one Reduction of the signal level compared to the signal level of the Microphone signal of the second directional microphone of the first order results. Then the two directional microphones become first Aligned again as described at the beginning. This The procedure is repeated until at most a slight reduction in the signal level of the microphone signal of the first directional microphone of the first order can.
- this represents a continuously running cyclical Algorithm represents a three-stage control loop, with the Help the three omnidirectional microphones by amount and Phase can be compared. It can be a uniform one small step size or an adaptive step size used become. Realization of the phase compensation units can for example by term elements or digital Filters are done. A digital filter can be used broadband or different for different frequency ranges Achieve phase compensation.
- one of three omnidirectional Microphones formed second-order directional microphone system can also be used on directional microphone systems with more than three omnidirectional microphones and higher than second Order are transferred.
- FIG. 3 shows a hearing aid device 50 that can be worn behind the ear with a directional microphone system according to the invention.
- the hearing aid 50 includes a battery chamber 51 for arrangement a battery 52 for supplying power to the hearing aid 50, signal processing electronics 53 and an MTO switch 54 for switching off the hearing aid 50 (switch position 0) and to switch reception between the directional microphone system (switch position M) and one Telephone coil (switch position T).
- the directional microphone system of the hearing aid device 50 comprises three omnidirectional microphones 55, 56 and 57, each one Sound inlet opening 58, 59 and 60 is assigned.
- the Sound inlet openings 58-60 are in the exemplary embodiment arranged laterally on the hearing aid device 50. At least they lie approximately on a straight line 61 and point approximately equal distance from each other. Different from the one shown Embodiment could be the sound inlet openings 58-60 also - like hearing aids worn behind the ear usual - be arranged on the top of the housing.
- the microphone adjustment when the hearing aid device is worn take place in real environmental conditions. hereby are especially signs of pollution and aging the microphones 55-57 in the hearing aid 50 compensated.
- the hearing aid is for wearing the hearing aid 50 behind the ear 50 provided in a known manner with a carrying hook 62.
- An acoustic input signal fed to the hearing aid 50 is used in microphones 55-57 in electrical input signals converted in the signal processing electronics 53 processed and finally in a receiver 63 in one acoustic signal converted back and by the carrying hook 62 and an associated sound tube (not shown) supplied to the hearing aid wearer's hearing.
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- Otolaryngology (AREA)
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- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Neurosurgery (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
- Abgleichen der Amplituden der von den omnidirektionalen Mikrofonen erzeugten Mikrofonsignale,
- Abgleichen der Amplituden der von den Richtmikrofonen erster Ordnung erzeugten Mikrofonsignale durch Phasenverschiebung wenigstens eines von einem der drei omnidirektionalen Mikrofone erzeugten Mikrofonsignale.
- Figur 1
- ein Richtmikrofonsystem zweiter Ordnung nach dem Stand der Technik,
- Figur 2
- ein Richtmikrofonsystem gemäß der Erfindung und
- Figur 3
- ein hinter dem Ohr tragbares Hörhilfegerät mit einem Richtmikrofonsystem gemäß der Erfindung.
Claims (14)
- Verfahren zum automatischen Mikrofonabgleich bei einem Richtmikrofonsystem mit wenigstens drei omnidirektionalen Mikrofonen (21, 22, 23; 55, 56, 57), wobei zum Erzeugen einer Richtcharakteristik jeweils zwei omnidirektionale Mikrofone (21, 22; 22, 23; 55, 56; 56, 57) zu einem ersten bzw. einem zweiten Richtmikrofon erster Ordnung verschaltet sind, mit folgenden Verfahrensschritten:Abgleichen der Amplituden der von den omnidirektionalen Mikrofonen (21, 22, 23; 55, 56, 57) erzeugten Mikrofonsignale,Abgleichen der Amplituden der von den Richtmikrofonen erster Ordnung erzeugten Mikrofonsignale durch Phasenverschiebung wenigstens eines von einem der drei omnidirektionalen Mikrofone (21, 22, 23; 55, 56, 57) erzeugten Mikrofonsignale.
- Verfahren nach Anspruch 1, wobei die omnidirektionalen Mikrofone (55, 56, 57) jeweils wenigstens eine Schalleintrittsöffnung (58, 59, 60) aufweisen und diese zumindest näherungsweise entlang einer Geraden (61) und in gleichem Abstand zueinander angeordnet sind.
- Verfahren nach Anspruch 1 oder 2, wobei zum Abgleich der Amplituden der von den omnidirektionalen Mikrofonen (21, 22, 23; 55, 56, 57) erzeugten Mikrofonsignale jeweils ein Maß der zeitlich gemittelten Schallfeldenergie aus den Mikrofonsignalen gewonnen wird und die Signalübertragungsfunktionen der omnidirektionalen Mikrofone (21, 22, 23; 55, 56, 57) durch den Mikrofonen (21, 22, 23; 55, 56, 57) nachgeschaltete Einstellmittel dahingehend angepasst werden, dass das jeweils aus einem Mikrofonsignal ermittelte Maß der zeitlich gemittelten Schallfeldenergie für alle drei Mikrofonsignale zumindest näherungsweise übereinstimmt.
- Verfahren nach Anspruch 3, wobei als Maß der zeitlich gemittelten Schallfeldenergie der Signalpegel ermittelt wird.
- Verfahren nach Anspruch 3 oder 4, wobei die Signalübertragungsfunktionen der omnidirektionalen Mikrofone (21, 22, 23; 55, 56, 57) jeweils durch Multiplikation der Mikrofonsignale mit einem Faktor eingestellt werden.
- Verfahren nach einem der Ansprüche 1 bis 5, wobei zum Abgleich der Amplituden der von den Richtmikrofonen erster Ordnung erzeugten Mikrofonsignale jeweils ein Maß der zeitlich gemittelten Schallfeldenergie aus den Mikrofonsignalen der Richtmikrofone erster Ordnung gewonnen und abgeglichen wird.
- Verfahren nach Anspruch 6, wobei als Maß der zeitlich gemittelten Schallfeldenergie der Signalpegel ermittelt wird.
- Verfahren nach einem der Ansprüche 1 bis 7, mit einem ersten, einem zweiten und einem dritten omnidirektionalen Mikrofon (21, 22, 23; 55, 56, 57), wobei zum Erzeugen einer Richtcharakteristik das erste und das zweite omnidirektionale Mikrofon (21, 22; 55, 56) zu einem ersten Richtmikrofon erster Ordnung sowie das zweite und das dritte omnidirektionale Mikrofon (22, 23; 56, 57) zu einem zweiten Richtmikrofon erster Ordnung verschaltet sind, wobei eine Phasenverschiebung des von dem ersten oder dem zweiten omnidirektionalen Mikrofon (21, 22; 56, 57) erzeugten Mikrofonsignals derart erfolgt, dass sich die Amplitude des von dem ersten Richtmikrofon erster Ordnung erzeugten Mikrofonsignals gegenüber der Amplitude des von dem zweiten Richtmikrofon erster Ordnung erzeugten Mikrofonsignals verringert, und wobei nachfolgend die Amplituden der Richtmikrofone erster Ordnung durch Phasenverschiebung des von dem zweiten oder dem dritten omnidirektionalen Mikrofon (22, 23; 56, 57) erzeugten Mikrofonsignals erneut abgeglichen werden.
- Verfahren nach Anspruch 8, wobei die Phasenverschiebung innerhalb eines vorgebbaren Wertebereiches derart erfolgt, dass die Amplitude des von dem ersten Richtmikrofon erster Ordnung erzeugten Mikrofonsignals gegenüber der Amplitude des von dem zweiten Richtmikrofon erster Ordnung erzeugten Mikrofonsignals minimiert ist.
- Verfahren nach Anspruch 8, wobei die Verfahrensschritte so lange wiederholt werden, bis ein Abbruchkriterium erreicht ist.
- Verfahren nach einem der Ansprüche 1 bis 10, wobei eine Einteilung der von den omnidirektionalen Mikrofonen (21, 22, 23; 55, 56, 57) erzeugten Mikrofonsignale in Frequenzbänder erfolgt und der Mikrofonabgleich jeweils in einem Frequenzband durchgeführt wird.
- Richtmikrofonsystem mit wenigstens einem ersten, einem zweiten und einem dritten omnidirektionalen Mikrofon (21, 22, 23; 55, 56, 57), wobei jeweils zwei omnidirektionale Mikrofone (21, 22; 22, 23; 55, 56; 56, 57) zu einem ersten Richtmikrofon erster Ordnung und einem zweiten Richtmikrofon erster Ordnung miteinander verschaltet sind, wobei Pegelmesseinrichtungen (28, 29, 30; 34, 35) zum Ermitteln der zeitlich gemittelten Signalpegel der von den omnidirektionalen Mikrofonen (21, 22, 23; 55, 56, 57) und der von den Richtmikrofonen erster Ordnung erzeugten Mikrofonsignale vorhanden sind, wobei eine Amplitudensteuereinrichtung (31) zum Einstellen der Amplituden bei wenigstens zwei der drei von den omnidirektionalen Mikrofonen (21, 22, 23; 55, 56, 57) erzeugten Mikrofonsignale in Abhängigkeit der ermittelten Signalpegel vorhanden ist und wobei eine Phasensteuereinrichtung zum Einstellen der Phase des von wenigstens einem omnidirektionalen Mikrofon (21, 22; 55, 56) erzeugten Mikrofonsignals in Abhängigkeit der von den Pegelmesseinrichtungen (34, 35) bei den Richtmikrofonen erster Ordnung ermittelten Signalpegel vorhanden ist.
- Richtmikrofonsystem nach Anspruch 12, wobei eine Phasensteuereinrichtung (36) zum Einstellen der Phasen der von wenigstens zwei omnidirektionalen Mikrofonen (21, 22; 55, 56) erzeugten Mikrofonsignale in Abhängigkeit der von den Pegelmesseinrichtungen (34, 35) bei den Richtmikrofonen erster Ordnung ermittelten Signalpegel vorhanden ist.
- Anordnung eines Richtmikrofonsystems nach Anspruch 12 oder 13 in einem Hörhilfegerät (50).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10310579 | 2003-03-11 | ||
DE10310579A DE10310579B4 (de) | 2003-03-11 | 2003-03-11 | Automatischer Mikrofonabgleich bei einem Richtmikrofonsystem mit wenigstens drei Mikrofonen |
Publications (3)
Publication Number | Publication Date |
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EP1465453A2 true EP1465453A2 (de) | 2004-10-06 |
EP1465453A3 EP1465453A3 (de) | 2009-12-16 |
EP1465453B1 EP1465453B1 (de) | 2011-01-26 |
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EP04004215A Expired - Lifetime EP1465453B1 (de) | 2003-03-11 | 2004-02-25 | Automatischer Mikrofonabgleich bei einem Richtmikrofonsystem mit wenigstens drei Mikrofonen |
Country Status (4)
Country | Link |
---|---|
US (1) | US7474755B2 (de) |
EP (1) | EP1465453B1 (de) |
DE (2) | DE10310579B4 (de) |
DK (1) | DK1465453T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1916872A2 (de) * | 2006-10-23 | 2008-04-30 | Siemens Audiologische Technik GmbH | Differentielles Richtmikrofonsystem und Hörhilfsgerät mit einem solchen differentiellen Richtmikrofonsystem |
EP2169984A3 (de) * | 2008-09-26 | 2012-05-30 | Siemens Medical Instruments Pte. Ltd. | Hörhilfegerät mit einem Richtmikrofonsystem sowie Verfahren zum Betrieb eines derartigen Hörhilfegerätes |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004010867B3 (de) * | 2004-03-05 | 2005-08-18 | Siemens Audiologische Technik Gmbh | Verfahren und Vorrichtung zum Anpassen der Phasen von Mikrofonen eines Hörgeräterichtmikrofons |
EP1614528A1 (de) | 2004-07-01 | 2006-01-11 | Alcan Technology & Management Ltd. | Verfahren zur Herstellung eines Verpackungsmaterials |
US7542580B2 (en) * | 2005-02-25 | 2009-06-02 | Starkey Laboratories, Inc. | Microphone placement in hearing assistance devices to provide controlled directivity |
EP1989777A4 (de) * | 2006-03-01 | 2011-04-27 | Softmax Inc | System und verfahren zur erzeugung eines separaten signals |
US8103030B2 (en) | 2006-10-23 | 2012-01-24 | Siemens Audiologische Technik Gmbh | Differential directional microphone system and hearing aid device with such a differential directional microphone system |
US8160273B2 (en) * | 2007-02-26 | 2012-04-17 | Erik Visser | Systems, methods, and apparatus for signal separation using data driven techniques |
EP2115743A1 (de) * | 2007-02-26 | 2009-11-11 | QUALCOMM Incorporated | Systeme, verfahren und vorrichtung zur signaltrennung |
DK2071873T3 (en) * | 2007-12-11 | 2017-08-28 | Bernafon Ag | A hearing aid system comprising a custom filter and a measurement method |
US8175291B2 (en) * | 2007-12-19 | 2012-05-08 | Qualcomm Incorporated | Systems, methods, and apparatus for multi-microphone based speech enhancement |
US8321214B2 (en) * | 2008-06-02 | 2012-11-27 | Qualcomm Incorporated | Systems, methods, and apparatus for multichannel signal amplitude balancing |
US9648421B2 (en) * | 2011-12-14 | 2017-05-09 | Harris Corporation | Systems and methods for matching gain levels of transducers |
EP3629602A1 (de) * | 2018-09-27 | 2020-04-01 | Oticon A/s | Hörvorrichtung und ein hörsystem mit einer vielzahl von adaptiven zweikanaligen beamformern |
US11303994B2 (en) * | 2019-07-14 | 2022-04-12 | Peiker Acustic Gmbh | Reduction of sensitivity to non-acoustic stimuli in a microphone array |
CN113689875B (zh) * | 2021-08-25 | 2024-02-06 | 湖南芯海聆半导体有限公司 | 一种面向数字助听器的双麦克风语音增强方法和装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5463694A (en) * | 1993-11-01 | 1995-10-31 | Motorola | Gradient directional microphone system and method therefor |
EP0942627A2 (de) * | 1998-03-09 | 1999-09-15 | Siemens Audiologische Technik GmbH | Hörgerät mit einem Richtmikrofon-System sowie Verfahren zum Betrieb desselben |
WO2000076268A2 (de) * | 1999-06-02 | 2000-12-14 | Siemens Audiologische Technik Gmbh | Hörhilfsgerät mit richtmikrofonsystem sowie verfahren zum betrieb eines hörhilfsgeräts |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK164349C (da) * | 1989-08-22 | 1992-11-02 | Oticon As | Hoereapparat med tilbagekoblingskompensation |
AT407815B (de) * | 1990-07-13 | 2001-06-25 | Viennatone Gmbh | Hörgerät |
US5515445A (en) * | 1994-06-30 | 1996-05-07 | At&T Corp. | Long-time balancing of omni microphones |
US5757933A (en) * | 1996-12-11 | 1998-05-26 | Micro Ear Technology, Inc. | In-the-ear hearing aid with directional microphone system |
DE19822021C2 (de) * | 1998-05-15 | 2000-12-14 | Siemens Audiologische Technik | Hörgerät mit automatischem Mikrofonabgleich sowie Verfahren zum Betrieb eines Hörgerätes mit automatischem Mikrofonabgleich |
US6654468B1 (en) * | 1998-08-25 | 2003-11-25 | Knowles Electronics, Llc | Apparatus and method for matching the response of microphones in magnitude and phase |
DE19849739C2 (de) * | 1998-10-28 | 2001-05-31 | Siemens Audiologische Technik | Adaptives Verfahren zur Korrektur der Mikrofone eines Richtmikrofonsystems in einem Hörgerät sowie Hörgerät |
US6741713B1 (en) * | 1998-12-17 | 2004-05-25 | Sonionmicrotronic Nederlan B.V. | Directional hearing device |
DE19918883C1 (de) * | 1999-04-26 | 2000-11-30 | Siemens Audiologische Technik | Hörhilfegerät mit Richtmikrofoncharakteristik |
AU4279800A (en) * | 1999-04-28 | 2000-11-10 | Gennum Corporation | Programmable multi-mode, multi-microphone system |
WO2001001732A1 (en) * | 1999-06-24 | 2001-01-04 | Tøpholm & Westermann APS | Hearing aid with controllable directional characteristics |
EP1198974B1 (de) * | 1999-08-03 | 2003-06-04 | Widex A/S | Hörgerät mit adaptiver anpassung von mikrofonen |
ATE230917T1 (de) * | 1999-10-07 | 2003-01-15 | Zlatan Ribic | Verfahren und anordnung zur aufnahme von schallsignalen |
US7092537B1 (en) * | 1999-12-07 | 2006-08-15 | Texas Instruments Incorporated | Digital self-adapting graphic equalizer and method |
AU2001245740B2 (en) * | 2000-03-14 | 2005-04-14 | Audia Technology, Inc. | Adaptive microphone matching in multi-microphone directional system |
DE10045197C1 (de) * | 2000-09-13 | 2002-03-07 | Siemens Audiologische Technik | Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätessystems sowie Hörhilfegerät oder Hörgerätesystem |
WO2002028140A2 (en) * | 2000-09-29 | 2002-04-04 | Knowles Electronics, Llc | Second order microphone array |
-
2003
- 2003-03-11 DE DE10310579A patent/DE10310579B4/de not_active Expired - Fee Related
-
2004
- 2004-02-25 DK DK04004215.2T patent/DK1465453T3/da active
- 2004-02-25 EP EP04004215A patent/EP1465453B1/de not_active Expired - Lifetime
- 2004-02-25 DE DE502004012137T patent/DE502004012137D1/de not_active Expired - Lifetime
- 2004-03-11 US US10/798,180 patent/US7474755B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5463694A (en) * | 1993-11-01 | 1995-10-31 | Motorola | Gradient directional microphone system and method therefor |
EP0942627A2 (de) * | 1998-03-09 | 1999-09-15 | Siemens Audiologische Technik GmbH | Hörgerät mit einem Richtmikrofon-System sowie Verfahren zum Betrieb desselben |
WO2000076268A2 (de) * | 1999-06-02 | 2000-12-14 | Siemens Audiologische Technik Gmbh | Hörhilfsgerät mit richtmikrofonsystem sowie verfahren zum betrieb eines hörhilfsgeräts |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1916872A2 (de) * | 2006-10-23 | 2008-04-30 | Siemens Audiologische Technik GmbH | Differentielles Richtmikrofonsystem und Hörhilfsgerät mit einem solchen differentiellen Richtmikrofonsystem |
EP1916872A3 (de) * | 2006-10-23 | 2011-08-17 | Siemens Audiologische Technik GmbH | Differentielles Richtmikrofonsystem und Hörhilfsgerät mit einem solchen differentiellen Richtmikrofonsystem |
EP2169984A3 (de) * | 2008-09-26 | 2012-05-30 | Siemens Medical Instruments Pte. Ltd. | Hörhilfegerät mit einem Richtmikrofonsystem sowie Verfahren zum Betrieb eines derartigen Hörhilfegerätes |
Also Published As
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DK1465453T3 (da) | 2011-05-16 |
DE10310579B4 (de) | 2005-06-16 |
DE502004012137D1 (de) | 2011-03-10 |
DE10310579A1 (de) | 2004-09-23 |
US20040240683A1 (en) | 2004-12-02 |
US7474755B2 (en) | 2009-01-06 |
EP1465453B1 (de) | 2011-01-26 |
EP1465453A3 (de) | 2009-12-16 |
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