WO1999049698A1 - Verfahren und einrichtung zum betrieb einer mikrofonanordnung, insbesondere in einem kraftfahrzeug - Google Patents
Verfahren und einrichtung zum betrieb einer mikrofonanordnung, insbesondere in einem kraftfahrzeug Download PDFInfo
- Publication number
- WO1999049698A1 WO1999049698A1 PCT/EP1999/001037 EP9901037W WO9949698A1 WO 1999049698 A1 WO1999049698 A1 WO 1999049698A1 EP 9901037 W EP9901037 W EP 9901037W WO 9949698 A1 WO9949698 A1 WO 9949698A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- microphone
- operating
- evaluation
- microphones
- signals
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000011156 evaluation Methods 0.000 claims abstract description 24
- 230000005236 sound signal Effects 0.000 claims abstract description 4
- 238000004364 calculation method Methods 0.000 claims description 6
- 101100495769 Caenorhabditis elegans che-1 gene Proteins 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000011664 signaling Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 3
- 230000002596 correlated effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
Definitions
- the invention relates to a method and a device for operating a microphone arrangement, in particular in a motor vehicle, according to the preamble of claims 1 and 6.
- Microphones or microphone arrangements are required in motor vehicles, in particular for operating the so-called hands-free system, but moreover also in speech amplification and transmission systems and in systems for active noise suppression.
- microphones are usually arranged in the area of the dashboard or in the area of the roof fitting or on the inside mirror.
- simple microphones or microphone arrangements are often a problem.
- the voice messages are overlaid by driving noises, which is problematic not only for hands-free telephone systems but also for voice-controlled input units.
- a voice control device for components in motor vehicles in which the actuation of the control device by the voice generates a feedback with which it can be ensured whether the control device has correctly accepted the voice-controlled command.
- a voice control device of this type also concentrates only on a conventional microphone training or microphone arrangement with regard to its microphone design.
- a voice-controlled operating method of a similar type is known from DE 19533541 C1.
- voice control is treated as such.
- a very complex speech recognition process is used at which the aspects of noise reduction, echo compensation, feature extraction, syntax and semantics checking are dealt with separately. It's just about the
- a multi-channel communication system with several microphones and several loudspeakers is known from EP 0721178 A 2.
- the entire system is designed for at least two speaking people who are connected to each other in the transmit / receive mode.
- the transmission means select the voice message from an overall background noise.
- a so-called error or comparison microphone is brought very close to the speaking person via the seat belt.
- the microphone location is also determined here. Otherwise, the design according to this document is designed for the transmission / reception operation of two or more people.
- EP 0773531 A a frequency-selective control system for acoustic systems.
- Prevention of overdrive is the focus here.
- An improvement in the reception quality of the voice message is neglected.
- a system of a similar type is also known from EP 0721179 A 2.
- the adaptive tonal control system disclosed there for eliminating stability problems also treats the prevention of the oversteer mentioned above.
- this cross-section from the prior art shows that one is fundamentally concerned with improving the voice signal already received.
- an improvement in the recording quality at the location of the speech production is neglected in many cases, if not in principle.
- the invention is therefore based on the object of further developing a method and a device of the generic type in such a way that the recording quality of the voice signal input into the system is fundamentally improved.
- the stated object is achieved according to the invention in a method of the generic type by the characterizing features of patent claim 1.
- the central point of the invention is the definition of a virtual, optimized microphone location. As intended, this is defined virtually where the language source is, i.e. at the location of the speaker's head.
- This so-called spatial noise or speech source recognition can e.g. be carried out by means of transit time measurement. In the case of a multiple arrangement of microphones, this means that the speech source can be recognized in its spatial position by means of a transit time measurement during the speech process.
- the amount and phase of the microphones are added in such a way that the useful signals are added and amplified, but the interference signals which are not correlated with the useful signal are optimally masked out. This means that all microphones have a supporting function and are included in the evaluation. It is not a question of post-processing the microphone signal, but rather an improvement of the speech signal fed into the transmission chain.
- the principle of the invention is particularly advantageous in that a microphone which has been selected in this way or the transit time measurement on which it is based can be combined with a position determination of the head of the speaking person.
- the head position data can be generated in this way via the speech source recognition or the so-called virtual microphone location determination, via which the security systems can be controlled in a qualified manner.
- the head position is also determined in parallel to the normal speech mode for car telephones or voice input units, without having to provide any additional means.
- the safety system can be controlled if necessary so that the airbag is not triggered.
- the system is thus multifunctional overall, although there is essentially an increase in the voice quality at the point of detection. This leads to a more understandable transmission during speech operation in a car telephone system.
- the voice commands are recognized and implemented more reliably in voice input-controlled units in the motor vehicle.
- Figure 1 Basic structure in system overview.
- Figure 2 embodiment of an electronic structure according to the invention.
- FIG. 1 shows the structure of the basic elements as well as the functional connection between them. There are no detailed descriptions and only a system overview is shown.
- a plurality of microphones 1, 2, 3 is arranged spatially distributed within the motor vehicle.
- an arrangement with two microphones can suffice with a correspondingly favorably chosen positioning.
- the choice of microphone locations is arbitrary and can either be permanently installed in fittings or be spatially distributed in the motor vehicle by means of further fastening elements. Basically, however, the fact remains that several microphones are required per seat. However, 3 microphones are required for exact 3-D localization. The microphone locations must span a 3-dimensional space and must not be on one level. If, on the other hand, the microphones are too far apart, the transit time or correlation measurement is not sufficiently accurate.
- All microphones deliver a corresponding signal, which is combined to form a signal evaluation 10. If a voice message is now given in the vehicle, it is received by all microphones. However, since these are spatially distributed, on the one hand the quality of the received signal is different, and on the other hand, with the most precise evaluation, runtime differences arise which are generated by the limited speed of sound. A runtime determination is then carried out within the signal evaluation 10, and the location of the noise or speech generation is determined from the correlation of all microphone signals. The spatial coordinates for the speech source determined in this way then permit electronic determination of the so-called virtual microphone location.
- a further procedure can, however, also consist in the fact that basically all microphone signals are always evaluated, and the voice message can be continuously verified by means of a plausibility check by comparing the individual microphone signals.
- the signal evaluation 10 is connected bidirectionally in terms of signal technology to a subsequent microphone location determination unit 20.
- a reception lobe determination and a corresponding calculation can then be carried out or the selection of the current main microphone can be determined.
- the microphone location determination unit 20 is in turn connected in terms of signal technology to a calculation unit 30, with the aid of which a determination of the position of the head is carried out from the determined data or signals.
- the further calculation for example in a comparison with samples, can now lie here.
- the comparison with samples can shorten the computing time considerably, because then you do not have to calculate every time from initio.
- the so-called "out of position" positions of the head of the speaking person with regard to an airbag deployment can be recognized immediately.
- the calculation unit 30 is subsequently connected to the signal generation for the safety systems 40 such as airbag, belt tensioners and the like .
- the bidirectional connection SB between the signal evaluation 10 and the microphone location determination unit 20 enables the control of the microphones, which is the focus here, depending on the position of the head of the speaking person.
- the invention If the head of the corresponding person now moves during speech operation, the invention, so to speak, tracks a virtual microphone location.
- the speech mode starts with a positionally optimized microphone X 1 and the position changes during the speech mode, the optimum microphone location is tracked during the speech mode, for example by shifting to the microphone X 2 as a quasi-dominant microphone.
- the virtual microphone location once determined as optimal, naturally changes when the position of the head of the speaking person changes. This is captured in the essence of the invention and solved here in an advantageously simple manner. It is a special case if the virtual microphone location coincides with one of the actual microphones. In the main, however, a collective microphone signal evaluation takes place, in which the directional characteristic is adapted to the changed position of the head by correspondingly shifting the quasi-ranking in the evaluation of the individual microphone signals.
- FIG. 2 shows a simple basic circuit arrangement for realizing the mode of operation shown only systematically in FIG. 1.
- the microphones 1,2,3 are each connected to an adjustable amplifier 4,5,6. These adjustable amplifiers are controlled via the evaluation device 7. Two of the adjustable amplifiers can also be coupled or correlated on the control side. Furthermore, the individual amplifier output signals are also sent to said evaluation device 7. At the same time, the amplified microphone signals are connected to an adder 8, which is connected on the output side to the device 9 for transmitting the audio signals.
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Circuit For Audible Band Transducer (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/646,826 US6748088B1 (en) | 1998-03-23 | 1999-02-17 | Method and device for operating a microphone system, especially in a motor vehicle |
DE59900630T DE59900630D1 (de) | 1998-03-23 | 1999-02-17 | Verfahren und einrichtung zum betrieb einer mikrofonanordnung, insbesondere in einem kraftfahrzeug |
EP99910231A EP1064822B1 (de) | 1998-03-23 | 1999-02-17 | Verfahren und einrichtung zum betrieb einer mikrofonanordnung, insbesondere in einem kraftfahrzeug |
JP2000538539A JP4226214B2 (ja) | 1998-03-23 | 1999-02-17 | 例えば自動車におけるマイクロフォン装置を作動する方法および装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19812697A DE19812697A1 (de) | 1998-03-23 | 1998-03-23 | Verfahren und Einrichtung zum Betrieb einer Mikrofonanordnung, insbesondere in einem Kraftfahrzeug |
DE19812697.2 | 1998-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999049698A1 true WO1999049698A1 (de) | 1999-09-30 |
Family
ID=7861976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/001037 WO1999049698A1 (de) | 1998-03-23 | 1999-02-17 | Verfahren und einrichtung zum betrieb einer mikrofonanordnung, insbesondere in einem kraftfahrzeug |
Country Status (5)
Country | Link |
---|---|
US (1) | US6748088B1 (de) |
EP (1) | EP1064822B1 (de) |
JP (1) | JP4226214B2 (de) |
DE (2) | DE19812697A1 (de) |
WO (1) | WO1999049698A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1083543A2 (de) * | 1999-09-08 | 2001-03-14 | Volkswagen Aktiengesellschaft | Verfahren zum Betrieb einer Mehrfachmikrofonanordnung in einem Kraftfahrzeug zur sprachgesteuerter Befehleingabe |
US8054988B2 (en) * | 1920-04-18 | 2011-11-08 | Volkswagen Ag | Communications device for transmitting acoustic signals in a motor vehicle |
CN108882094A (zh) * | 2018-07-27 | 2018-11-23 | 歌尔科技有限公司 | 一种反馈降噪耳机及其反馈电路 |
US10410516B1 (en) | 2018-05-24 | 2019-09-10 | Veoneer Us, Inc. | Systems and methods for vehicle geofencing management |
US11514789B2 (en) | 2018-01-05 | 2022-11-29 | Arriver Software Llc | Illumination-based object tracking within a vehicle |
US11904783B2 (en) | 2018-01-05 | 2024-02-20 | Arriver Software Llc | Vehicle microphone activation and/or control systems |
Families Citing this family (22)
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US8189825B2 (en) * | 1994-05-09 | 2012-05-29 | Breed David S | Sound management techniques for vehicles |
DE19843109C2 (de) * | 1998-09-21 | 2000-11-09 | Hcd Gmbh | Verfahren zur Herstellung eines oberflächenstrukturierten, folienartigen Halbzeugs mit Druckanwendung |
DE19943872A1 (de) * | 1999-09-14 | 2001-03-15 | Thomson Brandt Gmbh | Vorrichtung zur Anpassung der Richtcharakteristik von Mikrofonen für die Sprachsteuerung |
DE19943875A1 (de) | 1999-09-14 | 2001-03-15 | Thomson Brandt Gmbh | System zur Sprachsteuerung mit einem Mikrofonarray |
DE19958836A1 (de) | 1999-11-29 | 2001-05-31 | Deutsche Telekom Ag | Verfahren und Anordnung zur Verbesserung der Kommunikation in einem Fahrzeug |
DE10035222A1 (de) * | 2000-07-20 | 2002-02-07 | Bosch Gmbh Robert | Verfahren zur aktustischen Ortung von Personen in einem Detektionsraum |
US7130705B2 (en) * | 2001-01-08 | 2006-10-31 | International Business Machines Corporation | System and method for microphone gain adjust based on speaker orientation |
US20030125959A1 (en) * | 2001-12-31 | 2003-07-03 | Palmquist Robert D. | Translation device with planar microphone array |
DE10217822C1 (de) * | 2002-04-17 | 2003-09-25 | Daimler Chrysler Ag | Verfahren und Vorrichtung zur Blickrichtungserkennung einer Person mittels wenigstens eines richtungsselektiven Mikrofons |
JP3910898B2 (ja) * | 2002-09-17 | 2007-04-25 | 株式会社東芝 | 指向性設定装置、指向性設定方法及び指向性設定プログラム |
DE10308414B4 (de) * | 2003-02-27 | 2007-10-04 | Bayerische Motoren Werke Ag | Verfahren zur Steuerung eines Akustiksystems im Fahrzeug |
EP1524879B1 (de) * | 2003-06-30 | 2014-05-07 | Nuance Communications, Inc. | Freisprechanlage zur Verwendung in einem Fahrzeug |
DE10337852A1 (de) * | 2003-08-18 | 2005-03-17 | Robert Bosch Gmbh | Fahrzeugsystem |
DE10339973A1 (de) * | 2003-08-29 | 2005-03-17 | Daimlerchrysler Ag | Intelligentes akustisches Mikrofon-Frontend mit Spracherkenner-Feedback |
WO2006037587A2 (de) * | 2004-10-04 | 2006-04-13 | Volkswagen Ag | Vorrichtung und verfahren zur akustischen kommunikation und/oder wahrnehmung in einem kraftfahrzeug |
DE102007002905A1 (de) * | 2007-01-19 | 2008-07-24 | Siemens Ag | Verfahren und Vorrichtung zur Aufnahme eines Sprachsignals |
JP2010010749A (ja) * | 2008-06-24 | 2010-01-14 | Panasonic Corp | マイクロホン装置 |
FR2948484B1 (fr) * | 2009-07-23 | 2011-07-29 | Parrot | Procede de filtrage des bruits lateraux non-stationnaires pour un dispositif audio multi-microphone, notamment un dispositif telephonique "mains libres" pour vehicule automobile |
DE102011012573B4 (de) * | 2011-02-26 | 2021-09-16 | Paragon Ag | Sprachbedienvorrichtung für Kraftfahrzeuge und Verfahren zur Auswahl eines Mikrofons für den Betrieb einer Sprachbedienvorrichtung |
US9984675B2 (en) * | 2013-05-24 | 2018-05-29 | Google Technology Holdings LLC | Voice controlled audio recording system with adjustable beamforming |
WO2015027950A1 (zh) * | 2013-08-30 | 2015-03-05 | 华为技术有限公司 | 立体声录制方法、装置和终端 |
DE102019209941B4 (de) * | 2019-07-05 | 2021-12-16 | Zf Friedrichshafen Ag | Bestimmen von Auslösecharakteristika eines Airbags |
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EP0472356A1 (de) * | 1990-08-16 | 1992-02-26 | Fujitsu Ten Limited | Spracherkennungseinrichtung für ein Fahrzeug mit einer Mikrophonanordnung zur Lokalisierung des Sitzes, von welchem ein Befehl kommt |
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US5539859A (en) * | 1992-02-18 | 1996-07-23 | Alcatel N.V. | Method of using a dominant angle of incidence to reduce acoustic noise in a speech signal |
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US5602962A (en) * | 1993-09-07 | 1997-02-11 | U.S. Philips Corporation | Mobile radio set comprising a speech processing arrangement |
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1998
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-
1999
- 1999-02-17 JP JP2000538539A patent/JP4226214B2/ja not_active Expired - Lifetime
- 1999-02-17 EP EP99910231A patent/EP1064822B1/de not_active Expired - Lifetime
- 1999-02-17 US US09/646,826 patent/US6748088B1/en not_active Expired - Lifetime
- 1999-02-17 DE DE59900630T patent/DE59900630D1/de not_active Expired - Lifetime
- 1999-02-17 WO PCT/EP1999/001037 patent/WO1999049698A1/de active IP Right Grant
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8054988B2 (en) * | 1920-04-18 | 2011-11-08 | Volkswagen Ag | Communications device for transmitting acoustic signals in a motor vehicle |
EP1083543A2 (de) * | 1999-09-08 | 2001-03-14 | Volkswagen Aktiengesellschaft | Verfahren zum Betrieb einer Mehrfachmikrofonanordnung in einem Kraftfahrzeug zur sprachgesteuerter Befehleingabe |
EP1083543A3 (de) * | 1999-09-08 | 2002-06-05 | Volkswagen Aktiengesellschaft | Verfahren zum Betrieb einer Mehrfachmikrofonanordnung in einem Kraftfahrzeug zur sprachgesteuerter Befehleingabe |
EP1739654A2 (de) | 1999-09-08 | 2007-01-03 | Volkswagen AG | Verfahren zum Betrieb einer Mehrfachmikrofonanordnung in einem Kraftfahrzeug sowie Mehrfachmikrofonanordnung selbst |
US11514789B2 (en) | 2018-01-05 | 2022-11-29 | Arriver Software Llc | Illumination-based object tracking within a vehicle |
US11904783B2 (en) | 2018-01-05 | 2024-02-20 | Arriver Software Llc | Vehicle microphone activation and/or control systems |
US10410516B1 (en) | 2018-05-24 | 2019-09-10 | Veoneer Us, Inc. | Systems and methods for vehicle geofencing management |
CN108882094A (zh) * | 2018-07-27 | 2018-11-23 | 歌尔科技有限公司 | 一种反馈降噪耳机及其反馈电路 |
CN108882094B (zh) * | 2018-07-27 | 2020-03-13 | 歌尔科技有限公司 | 一种反馈降噪耳机及其反馈电路 |
Also Published As
Publication number | Publication date |
---|---|
JP4226214B2 (ja) | 2009-02-18 |
EP1064822B1 (de) | 2002-01-16 |
JP2002508642A (ja) | 2002-03-19 |
DE59900630D1 (de) | 2002-02-21 |
DE19812697A1 (de) | 1999-09-30 |
US6748088B1 (en) | 2004-06-08 |
EP1064822A1 (de) | 2001-01-03 |
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