EP1284586A2 - Verfahren und System zur gerichteten Audio-Beschallung - Google Patents
Verfahren und System zur gerichteten Audio-Beschallung Download PDFInfo
- Publication number
- EP1284586A2 EP1284586A2 EP02017268A EP02017268A EP1284586A2 EP 1284586 A2 EP1284586 A2 EP 1284586A2 EP 02017268 A EP02017268 A EP 02017268A EP 02017268 A EP02017268 A EP 02017268A EP 1284586 A2 EP1284586 A2 EP 1284586A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- sound
- carrier signal
- ultrasound
- ultrasonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000002604 ultrasonography Methods 0.000 claims abstract description 35
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims abstract description 3
- 230000005236 sound signal Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 4
- 230000002238 attenuated effect Effects 0.000 claims description 3
- 238000000527 sonication Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009022 nonlinear effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009021 linear effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007704 transition 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
- 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
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2217/00—Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of their subgroups
- H04R2217/03—Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves
Definitions
- the invention relates to systems with which acoustic signals (such as speech, music) can be generated.
- acoustic signals such as speech, music
- the invention relates to systems in which the acoustic Signals concentrated in one direction be radiated.
- An ultrasound / audio speaker initially generates a carrier signal with a frequency that is above the upper limit of hearing of the human being, ie in the ultrasound range.
- the carrier signal with amplitude modulated to the audio signal to be transmitted.
- the ultrasound carrier signal itself is not audible, can it is emitted with high sound pressure.
- the air behaves nonlinear and therefore acts like a demodulator that demodulates the AM signal and thus the audio signal as air vibration in the audible range generated again.
- the audible audio signal In the medium of air itself first arises, it takes away Volume with the distance from the transmitter (ultrasonic loudspeaker) First, constantly and then as a result of Absorb absorption of the air at a greater distance again.
- the lateral to the emission direction spatial Expansion or bundling of the generated audio signal depending on the bundling of the ultrasonic carrier signal (Opening angle of the radiated Ultrachall cone) and i.a. slightly larger than the ultrasound range.
- This can especially in confined spaces (vehicle interior) to unwanted reflections on objects to lead.
- the acoustic restriction to only one specific Handset is due to the lateral Broadening of the audio signal barely reachable.
- a system for targeted sonication of partial areas within a total area is described in DE 42 30 362 A1. This will be about a group of speakers ultrasound carrier signals modulated with an audio signal sent out to a listener.
- Another disadvantage is the need to do that To emit high-intensity ultrasound carrier signal, because only at a correspondingly high sound pressure non-linear Properties of air occur for demodulation the audio signals are required.
- the usual level for audible Sound (music, speech) is in the range of about 30 to 90dB (A).
- Health effects by very high levels of ultrasound on humans are not yet finally explored. Especially when used in vehicles (Where applicable, several ultrasonic transmitters may be active at the same time can be different audio signals for different occupants could generate) the high ultrasonic levels possibly lead to undesirable side effects.
- FIG. 1 shows schematically such an arrangement.
- the ultrasonic transmitter (1) generates the amplitude-modulated Carrier signal, which is in the form of a bundled Ultrasound cone (2) spreads. Due to the high sound pressure within the ultrasonic cone becomes the audio sound produced (3), also in a conical area. Both sound cones reach the listener (4), who is in a distance to the transmitter, which is for demodulation of the audio signal is required.
- the carrier signal is more focused, i. the ultrasonic cone has, as shown in Figure 2, a smaller opening angle compared to the area of Audio sound.
- the ultrasonic cone has, as shown in Figure 2, a smaller opening angle compared to the area of Audio sound.
- Figure 2 shows this spatial distribution the sound radiation as a function of the sound frequency. Shown are measurement results on an ultrasonic transmitter with a frequency of the carrier signal of 127kHz and two different frequencies in the air demodulated audio signal. In the Y direction is the measured dB value of the power and in the X direction of the beam angle in degrees. The angle of 90 degrees corresponds in this representation of the main direction of sound radiation (Axis of the cone of sound).
- the inventive method has the advantage that the from the reflector (5) forwarded audio signal (3) on the Handset (4) can be bundled. This happens preferably by appropriate shaping of the reflector (5), for example, as a concave surface (dome) is trained. This can be used even in confined spaces Spaces (vehicle) a good bundling of the reflected sound (3) on a narrow space area (Head of a single listener) can be achieved. in the Ideally, only the ear of the respective listener is reached, To further reflections on the head of the listener as possible avoid.
- the required minimum distance for generating the demodulated audio signal (3) not as a direct, linear free distance between Ultrasonic transmitter (1) and receiver (4) necessary but can by appropriate inclination of the reflector (5) also be angled so that a possibly only small available space is sufficient.
- the reflector (5) can also be multiple reflectors (5) be placed one after the other and successively the Forward sound so that the required distance achieved by multiple reflection will (not shown).
- a particular advantage is the ability to separate the audio signal (3) from the ultrasound carrier signal (2). If the path from the ultrasound transmitter (1) to the reflector (5) is long enough to generate the audio signal (3) in the air, the ultrasound carrier signal (2) is no longer needed. Thus, the (intense) ultrasound carrier signal can be attenuated, so that the listener (4) of the ultrasound only greatly reduced or not reached. For this purpose, a means can be introduced into the cone of sound, which selectively fades out or attenuates the ultrasound carrier signal (2).
- the reflector (5) accordingly designed so that it is selective Reflection properties: the ultrasound (2) is on the reflector (5) due to its high frequency Absorption significantly reduced in its performance while the low-frequency audio sound (3), however, almost unimpaired.
- a selective Damping on the reflector (5) can be achieved, for example be through an ultrasound-absorbing coating of the reflector.
- fine-pored Material e.g. fine-pored Material.
- the ultrasound-absorbing Layer can have a smaller area as the entire reflector surface, if the ultrasound is tightly bundled and therefore only a part of the Reflector surface hits while the audio sound cone u.U. something more extended.
- FIG. 4 shows schematically the installation of the corresponding reflector system in a vehicle.
- This results in good design options regarding the necessary installation depth, the u.U. also can accommodate required cooling devices.
- This in This example obliquely upwardly emitted ultrasonic carrier signal (2) meets the reflector (5), here in the upper portion of the windshield (9) is mounted, for example in the transition area between Windscreen and headliner (8) of the vehicle or as integrated part of the headliner (8).
- the ultrasonic carrier signal is strongly attenuated, so that practically only the audible audio sound (3) reflected becomes.
- the surface curvature of the reflector (5) causes additionally a focusing of the audio sound (3).
- the Main direction of the reflection is adjusted so that the reflected audio signals (3) the ear of the listener (4) to reach.
- An appropriate adjustment e.g. individual adaptation to the height of the listener or when adjusting the seat height
- the reflector system according to the invention offers the advantage that all components of the system, the one have greater weight and a corresponding volume, can be accommodated in areas of the driving area, the offer more space.
- the reflector itself can be relative thin and made of a light material (e.g. Plastic, etc.). This is also under Safety aspects an advantage, since all heavier Components (ultrasonic transmitter) by appropriate Integration into stable and deeper areas of the vehicle in the event of an accident are shielded (reducing the risk of injury in the head area).
- the reflector system by a safety device can be extended so that in case of an approximation of an object or a person to the area of high Ultrasonic intensity (ultrasonic cone between Ultrasonic transmitter and reflector) an automatic Shutdown or attenuation of the ultrasonic signal he follows.
- the detection of penetration into the ultrasonic cone can in the usual way by proximity detectors after in the prior art, e.g. by infrared or Ultrasonic detectors.
- the described method for directional audio radiation based on a modulated ultrasound carrier signal is characterized by a small footprint, high Bundling of the audio sound and reduction of the ultrasonic radiation on the phone. It is particularly suitable for use in small rooms, e.g. in Vehicles, with appropriate design on the individual seats offered different audio signals can be without causing acoustic overlays result.
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Circuit For Audible Band Transducer (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Stereophonic Arrangements (AREA)
Abstract
Description
- Abbildung 1:
- Ein übliches System zur gerichteten Audio-Beschallung durch Modulation von Ultraschall mit hohem Pegel.
- Abbildung 2:
- Ein Diagramm zur Darstellung der Bündelung der Schallabstrahlung in Abhängigkeit von der Frequenz.
- Abbildung 3:
- Ein System nach dem erfindungsgemäßen Verfahren mit einem Reflektor zwischen Schallquelle und Hörer.
- Abbildung 4:
- Ein Beipiel für einen Einsatz des erfindungsgemäßen Systems in einem PKW.
Ist der Weg vom Ultraschallsender (1) zum Reflektor (5) genügend lang, um in der Luft das Audio-Signal (3) zu erzeugen, so wird das Ultraschall-Trägersignal (2) nicht mehr benötigt. Damit kann das (intensive) Ultraschall-Trägersignal abgeschwächt werden, so dass den Hörer (4) der Ultraschall nur noch stark reduziert oder überhaupt nicht mehr erreicht. Hierzu kann ein Mittel in den Schallkegel eingebracht werden, das das Ultraschall-Trägersignal (2) selektiv ausblendet bzw. abschwächt.
Claims (16)
- Verfahren zur gerichteten Beschallung eines Hörers (4) mit akustisch wahrnehmbarem Audio-Schall (3) durch Modulation der Amplitude eines intensiven Ultraschall -Trägersignals (2), das von einem Ultraschallsender (1) gebündelt abgestrahlt wird, dadurch gekennzeichnet, dass der Audio-Schall (3) mittels eines Reflektors (5) auf den Hörer (4) gerichtet wird,
wobei das Ultraschall -Trägersignal (2) vor Erreichen des Hörers (4) durch ein zwischen Ultraschall -Sender (1) und Hörer (4) eingebrachtes Mittel gedämpft wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Mittel zur Dämpfung der Reflektor (5) herangezogen wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Dämpfung des Ultraschall-Trägersignals (2) durch Absorption erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Audio-Schall (3) durch die Reflexion fokussiert wird.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Haupt-Abstrahlrichtung des reflektierten Audio-Signals (3) verändert werden kann durch Verstellen oder Schwenken des Reflektors (5) und/oder des Ultraschallsenders (1).
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass bei Annäherung/Eindringen eines Gegenstands oder einer Person in den Bereich zwischen Ultraschallsender (1) und Reflektor (5) das Ultraschall-Trägersignal (2) in der Intensität verringert oder abgeschaltet wird.
- Vorrichtung zur gerichteten Beschallung eines Hörers (4) mit akustisch wahrnehmbarem Audio-Schall (3), wobei ein Ultraschallsender (1) ein amplitudenmoduliertes Utraschall-Trägersignal (2) mit hoher Intensität gebündelt abstrahlt, dadurch gekennzeichnet, dass ein Reflektor (5) vorhanden ist, der den Audio-Schall (3) in Richtung auf den Hörer (4) reflektiert,
und dass zwischen Ultraschall-Sender (1) und Hörer (4) ein Mittel eingebracht ist, das die Intensität des Ultraschall-Trägersignals (2) vor Erreichen des Hörers (4) stark verringert. - Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass das Mittel zur Verringerung der Intensität des Ultraschall -Trägersignals (2) durch den Reflektor (5) gebildet wird.
- Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Oberfläche des Reflektors (5) eine Krümmung aufweist, dergestalt, dass der Audio-Schall (3) in Richtung auf den Hörer (4) fokussiert wird.
- Vorrichtung nach der Anspruch 9, dadurch gekennzeichnet, dass das Mittel die Intensität des Ultraschall-Trägersignals durch Absorption verringert.
- Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass das Mittel als Schicht auf die reflektierende Oberfläche des Reflektors (5) aufgebracht ist.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass die Schicht nur auf einem Teil der reflektierenden Oberfläche des Reflektors (5) angebracht ist.
- Vorrichtung nach Anspruch 10, 11 oder 12, dadurch gekennzeichnet, dass das Mittel aus einem feinporigen Material, z.B. Stoff, besteht.
- Vorrichtung nach einem der Ansprüche 7 bis 13, dadurch gekennzeichnet, dass Stell- bzw. Schwenkvorrichtungen vorhanden sind, mit denen der Ultraschallsender (1) und/oder der Reflektor (5) mechanisch verstellt werden kann, so dass sich die Richtung des Audio-Schalls (3) verändert.
- Vorrichtung nach einem der Ansprüche 7 bis 14, dadurch gekennzeichnet, dass Detektoren vorhanden sind, die ein Eindringen eines Gegenstands oder einer Person in den Bereich zwischen Ultraschallsender (1) und Reflektor (5) erfassen und eine Verringerung der Intensität bzw. ein Abschalten des Ultraschall-Trägersignals (2) bewirken.
- Verwendung einer Vorrichtung nach einem der Ansprüche 7 bis 15, zur gerichteten Beschallung von Insassen eines Fahrzeugs mit Audio-Schall.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10140646 | 2001-08-18 | ||
DE10140646A DE10140646C2 (de) | 2001-08-18 | 2001-08-18 | Verfahren und Vorrichtung zur gerichteten Audio-Beschallung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1284586A2 true EP1284586A2 (de) | 2003-02-19 |
EP1284586A3 EP1284586A3 (de) | 2004-08-04 |
EP1284586B1 EP1284586B1 (de) | 2006-03-15 |
Family
ID=7695932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02017268A Expired - Fee Related EP1284586B1 (de) | 2001-08-18 | 2002-08-01 | Verfahren und System zur gerichteten Audio-Beschallung |
Country Status (4)
Country | Link |
---|---|
US (1) | US20030035552A1 (de) |
EP (1) | EP1284586B1 (de) |
JP (1) | JP2003163986A (de) |
DE (2) | DE10140646C2 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012136386A1 (en) * | 2011-04-07 | 2012-10-11 | Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. . | Playback device for audio and video |
EP2599332A2 (de) * | 2010-07-30 | 2013-06-05 | Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V. | Fahrzeug mit schallwellenreflektor |
EP2891842A1 (de) * | 2013-12-11 | 2015-07-08 | Audi Ag | Vorrichtung zur Reflexion von wenigstens einer akustischen und/oder optischen Signalausgabeeinrichtung ausgegebenen akustischen und/oder optischen Signalen in einen Innenraum eines Kraftfahrzeug |
CN105992099A (zh) * | 2015-02-03 | 2016-10-05 | 中兴通讯股份有限公司 | 终端及其定向播放音频信号的方法 |
DE102018001971A1 (de) | 2018-03-12 | 2018-09-20 | Daimler Ag | Verfahren und Fahrzeug zur gezielten Informationsweitergabe in eine vorgegebene Richtung außerhalb eines Fahrzeuges |
EP3462751A1 (de) * | 2017-09-28 | 2019-04-03 | Vestel Elektronik Sanayi ve Ticaret A.S. | Lautsprecheranordnung |
CN113316062A (zh) * | 2021-05-26 | 2021-08-27 | 成都西科微波通讯有限公司 | 一种基于换能器环形阵列的全向音频调制方法 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6793177B2 (en) | 2002-11-04 | 2004-09-21 | The Bonutti 2003 Trust-A | Active drag and thrust modulation system and method |
US7801570B2 (en) * | 2003-04-15 | 2010-09-21 | Ipventure, Inc. | Directional speaker for portable electronic device |
US8849185B2 (en) | 2003-04-15 | 2014-09-30 | Ipventure, Inc. | Hybrid audio delivery system and method therefor |
US6939012B2 (en) * | 2003-06-02 | 2005-09-06 | Eastman Kodak Company | Laser image projector |
US9190069B2 (en) * | 2005-11-22 | 2015-11-17 | 2236008 Ontario Inc. | In-situ voice reinforcement system |
US20090156249A1 (en) * | 2007-12-12 | 2009-06-18 | John Ruckart | Devices and computer readable media for use with devices having audio output within a spatially controlled output beam |
US20120281858A1 (en) * | 2011-05-03 | 2012-11-08 | Menachem Margaliot | METHOD AND APPARATUS FOR TRANSMISSION OF SOUND WAVES WITH HIGH LOCALIZATION of SOUND PRODUCTION |
JP2012239023A (ja) * | 2011-05-11 | 2012-12-06 | Denso Corp | パラメトリックスピーカ |
CN103748902B (zh) * | 2011-07-28 | 2017-08-29 | 弗劳恩霍夫应用研究促进协会 | 具有侧壁扬声器的交通工具 |
JP5787173B2 (ja) * | 2012-02-24 | 2015-09-30 | 株式会社デンソー | 車両用音出力装置 |
US9967672B2 (en) | 2015-11-11 | 2018-05-08 | Clearmotion Acquisition I Llc | Audio system |
US10403082B2 (en) * | 2016-04-12 | 2019-09-03 | Igt Canada Solutions Ulc | Systems and methods for providing private sound from a wagering gaming machine via modulated ultrasound |
DE102018209962A1 (de) * | 2018-06-20 | 2019-12-24 | Faurecia Innenraum Systeme Gmbh | Privataudiosystem für ein 3D-artiges Hörerlebnis bei Fahrzeuginsassen und ein Verfahren zu dessen Erzeugung |
US10645487B2 (en) * | 2018-07-23 | 2020-05-05 | Warped Dynamics, LLC | Vertically configured parametric transducer headphones |
DE102018214181A1 (de) * | 2018-08-22 | 2020-02-27 | Audi Ag | Kraftfahrzeug mit einer akustisch adaptiven Fahrgastkabine und Verfahren zum Betreiben eines Kraftfahrzeugs mit einer akustisch adaptiven Fahrgastkabine |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4823908A (en) * | 1984-08-28 | 1989-04-25 | Matsushita Electric Industrial Co., Ltd. | Directional loudspeaker system |
US4884275A (en) * | 1988-10-24 | 1989-11-28 | Murasa International | Laser safety shutoff system |
JPH03252299A (ja) * | 1990-02-28 | 1991-11-11 | Matsushita Electric Works Ltd | 超音波パラメトリックスピーカ |
US5598380A (en) * | 1994-02-08 | 1997-01-28 | Asulab, S.A. | Composite wall, notably motor vehicle windshield, including an ultrasonic device for detecting the presence of foreign bodies on one of its faces |
JPH1127774A (ja) * | 1997-07-02 | 1999-01-29 | Mk Seiko Co Ltd | パラメトリックスピーカー |
US5889870A (en) * | 1996-07-17 | 1999-03-30 | American Technology Corporation | Acoustic heterodyne device and method |
EP1061770A2 (de) * | 1999-06-14 | 2000-12-20 | Nokia Mobile Phones Ltd. | Audiovorrichtung |
US6229899B1 (en) * | 1996-07-17 | 2001-05-08 | American Technology Corporation | Method and device for developing a virtual speaker distant from the sound source |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4230362C2 (de) * | 1992-09-11 | 2001-10-04 | Thomson Brandt Gmbh | Verfahren zur Beschallung eines Teilbereiches und Anlage zur Durchführung des Verfahrens |
DE19628849C2 (de) * | 1996-07-17 | 2002-10-17 | Eads Deutschland Gmbh | Akustischer Richtstrahler durch modulierten Ultraschall |
ATE276636T1 (de) * | 1999-04-30 | 2004-10-15 | Sennheiser Electronic | Verfahren zur wiedergabe von audioschall mit ultraschall-lautsprechern |
-
2001
- 2001-08-18 DE DE10140646A patent/DE10140646C2/de not_active Expired - Fee Related
-
2002
- 2002-08-01 DE DE50206061T patent/DE50206061D1/de not_active Expired - Fee Related
- 2002-08-01 EP EP02017268A patent/EP1284586B1/de not_active Expired - Fee Related
- 2002-08-18 US US10/223,159 patent/US20030035552A1/en not_active Abandoned
- 2002-08-19 JP JP2002238600A patent/JP2003163986A/ja active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4823908A (en) * | 1984-08-28 | 1989-04-25 | Matsushita Electric Industrial Co., Ltd. | Directional loudspeaker system |
US4884275A (en) * | 1988-10-24 | 1989-11-28 | Murasa International | Laser safety shutoff system |
JPH03252299A (ja) * | 1990-02-28 | 1991-11-11 | Matsushita Electric Works Ltd | 超音波パラメトリックスピーカ |
US5598380A (en) * | 1994-02-08 | 1997-01-28 | Asulab, S.A. | Composite wall, notably motor vehicle windshield, including an ultrasonic device for detecting the presence of foreign bodies on one of its faces |
US5889870A (en) * | 1996-07-17 | 1999-03-30 | American Technology Corporation | Acoustic heterodyne device and method |
US6229899B1 (en) * | 1996-07-17 | 2001-05-08 | American Technology Corporation | Method and device for developing a virtual speaker distant from the sound source |
JPH1127774A (ja) * | 1997-07-02 | 1999-01-29 | Mk Seiko Co Ltd | パラメトリックスピーカー |
EP1061770A2 (de) * | 1999-06-14 | 2000-12-20 | Nokia Mobile Phones Ltd. | Audiovorrichtung |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 016, no. 052 (E-1164), 10. Februar 1992 (1992-02-10) & JP 03 252299 A (MATSUSHITA ELECTRIC WORKS LTD), 11. November 1991 (1991-11-11) * |
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 04, 30. April 1999 (1999-04-30) -& JP 11 027774 A (MK SEIKO CO LTD), 29. Januar 1999 (1999-01-29) * |
YONEYAMA M ET AL: "THE AUDIO SPOTLIGHT: AN APPLICATION OF NONLINEAR INTERACTION OF SOUND WAVES TO A NEW TYPE OF LOUDSPEAKER DESIGN" JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, Bd. 73, Nr. 5, Mai 1983 (1983-05), Seiten 1532-1536, XP000762272 ISSN: 0001-4966 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2599332A2 (de) * | 2010-07-30 | 2013-06-05 | Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V. | Fahrzeug mit schallwellenreflektor |
EP2599332B1 (de) * | 2010-07-30 | 2021-07-14 | Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V. | Fahrzeug mit schallwellenreflektor |
WO2012136386A1 (en) * | 2011-04-07 | 2012-10-11 | Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. . | Playback device for audio and video |
EP2891842A1 (de) * | 2013-12-11 | 2015-07-08 | Audi Ag | Vorrichtung zur Reflexion von wenigstens einer akustischen und/oder optischen Signalausgabeeinrichtung ausgegebenen akustischen und/oder optischen Signalen in einen Innenraum eines Kraftfahrzeug |
CN105992099A (zh) * | 2015-02-03 | 2016-10-05 | 中兴通讯股份有限公司 | 终端及其定向播放音频信号的方法 |
EP3462751A1 (de) * | 2017-09-28 | 2019-04-03 | Vestel Elektronik Sanayi ve Ticaret A.S. | Lautsprecheranordnung |
DE102018001971A1 (de) | 2018-03-12 | 2018-09-20 | Daimler Ag | Verfahren und Fahrzeug zur gezielten Informationsweitergabe in eine vorgegebene Richtung außerhalb eines Fahrzeuges |
CN113316062A (zh) * | 2021-05-26 | 2021-08-27 | 成都西科微波通讯有限公司 | 一种基于换能器环形阵列的全向音频调制方法 |
CN113316062B (zh) * | 2021-05-26 | 2024-02-02 | 成都西科微波通讯有限公司 | 一种基于换能器环形阵列的全向音频调制方法 |
Also Published As
Publication number | Publication date |
---|---|
DE10140646C2 (de) | 2003-11-20 |
US20030035552A1 (en) | 2003-02-20 |
DE10140646A1 (de) | 2003-03-13 |
JP2003163986A (ja) | 2003-06-06 |
EP1284586A3 (de) | 2004-08-04 |
DE50206061D1 (de) | 2006-05-11 |
EP1284586B1 (de) | 2006-03-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1284586B1 (de) | Verfahren und System zur gerichteten Audio-Beschallung | |
DE10255794B3 (de) | Akustische Schallführung im Fahrzeug | |
EP3152925B1 (de) | Lautsprechersystem | |
WO2001008449A1 (de) | Verfahren zur wiedergabe von audioschall mit ultraschall-lautsprechern | |
DE10259543B4 (de) | Richtlautsprecher | |
DE102007034029A1 (de) | Verfahren zur Information eines Beobachters über ein im Einsatz befindliches Einsatzfahrzeug und Anordnung dazu | |
DE19938171A1 (de) | Verfahren zur Verarbeitung von akustischen Signalen und Kommunikationsanlage für Insassen in einem Fahrzeug | |
WO2007065941A1 (de) | Lautsprechersystem | |
DE102018209962A1 (de) | Privataudiosystem für ein 3D-artiges Hörerlebnis bei Fahrzeuginsassen und ein Verfahren zu dessen Erzeugung | |
DE10016104C2 (de) | Vorrichtung zur Beschallung des Fahrgastraumes eines Kraftfahrzeuges | |
DE19951076A1 (de) | Vorrichtung zur Ansteuerung von Endgeräten in Kraftfahrzeugen | |
CH681144A5 (en) | Accessory for automobile HI=FI system | |
DE102018000059A1 (de) | Beschallungsanlage für den Innenraum eines Kraftfahrzeugs | |
DE102014214699A1 (de) | Wiedergabe tieffrequenter Audiosignale durch Körperschall | |
DE102017210729A1 (de) | Anordnung zur Beeinflussung von Luftschallereignissen | |
DE102020111736B3 (de) | Kraftfahrzeug mit einer Schallerzeugungsvorrichtung zur gerichteten Erzeugung von Schall und Verfahren zur Erzeugung einer Intermodulationsschallwelle | |
WO2016155895A1 (de) | Notfall-meldevorrichtung in einem kraftfahrzeug | |
DE102005036867A1 (de) | Sicherstellung der Privatsphäre bei Lautsprecherausgaben | |
DE19748839C1 (de) | Verfahren zur Geräuschanalyse | |
DE102008059239A1 (de) | Lautsprechervorrichtung in einem Fahrzeug und Fahrzeug mit mehreren Lautsprechervorrichtungen | |
DE102019209438B4 (de) | Kraftfahrzeug mit einem System zur Reduktion eines Schalldruckpegels in einem Kraftfahrzeuginnenraum sowie Verfahren zur Schalldruckpegel-Reduktion | |
EP3951771A1 (de) | Verfahren, gegenschallsystem und fahrzeug | |
DE19825280B4 (de) | Vorrichtung zur Beeinflussung eines Audiosignals in einem Kraftfahrzeug | |
EP3579226A1 (de) | Rückfahrwarnvorrichtung | |
DE102014214053A1 (de) | Autogenerative Maskierungssignale |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7G 10K 11/28 B Ipc: 7H 04R 1/34 A Ipc: 7B 60R 11/02 B |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17P | Request for examination filed |
Effective date: 20040813 |
|
17Q | First examination report despatched |
Effective date: 20040917 |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 50206061 Country of ref document: DE Date of ref document: 20060511 Kind code of ref document: P |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20060626 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20061218 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20080822 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20080813 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20080821 Year of fee payment: 7 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CD |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20090801 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20100430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100302 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090801 |