EP0779014B1 - Einrichtung zur fahrgeräuschabhängigen steuerung der lautstärke eines autoradios - Google Patents
Einrichtung zur fahrgeräuschabhängigen steuerung der lautstärke eines autoradios Download PDFInfo
- Publication number
- EP0779014B1 EP0779014B1 EP95928425A EP95928425A EP0779014B1 EP 0779014 B1 EP0779014 B1 EP 0779014B1 EP 95928425 A EP95928425 A EP 95928425A EP 95928425 A EP95928425 A EP 95928425A EP 0779014 B1 EP0779014 B1 EP 0779014B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- car radio
- acceleration sensor
- processing circuit
- volume
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers
- H04R3/12—Circuits for transducers for distributing signals to two or more loudspeakers
Definitions
- the invention relates to a device for driving noise Control the volume of a car radio.
- EP-A-O 246 772 describes an arrangement for damping Body vibrations in motor vehicles known, wherein the vibrations z. B. by driving over bumps caused.
- the body vibrations are detected by means of an acceleration sensor and the measurement signal is evaluated in a computing unit.
- the Suspension of the vehicle are dependent on the Measuring signal adjusted so that body vibrations be reduced.
- the object of the present invention is for a Control of the volume of a vehicle based on driving noise Car radios the derivation of a driving noise dependent Signals to improve that measures to Removal of useful signal components from the control signals spare.
- the invention is based on the knowledge that driving noises mainly as structure-borne noise in the interior (Passenger cabin) of the motor vehicle are transmitted. This is especially the engine noise and that Tire rolling noise. Measures to remove the Useful signal portion from the with the help of the acceleration sensor obtained signal are in the invention Setup not required.
- the inventive device has the further advantage that no further installations in the motor vehicle itself are required - such as laying Lines and mounting a microphone.
- the acceleration sensor rigid with the Car radio housing is connected.
- An advantageous one Design of the device according to the invention exists in that the acceleration sensor has a signal bandwidth of about 1 kHz. This makes the whole one Masking required spectral range of structure-borne noise covered and it can be available on the market Acceleration sensors are used, such as the acceleration sensor type ADXL50 from Analog Devices.
- the device according to the invention also in principle suitable for frequency-independent volume control is, better results with a frequency dependent Masking achieved for which according to a training of device according to the invention is provided that a Output of the acceleration sensor via a Signal processing circuit with a predetermined Algorithm and the audio signals generated by the car radio a multi-channel equalizer can be fed, the outputs with control inputs of the signal processing circuit and with Inputs from power amplifiers are connected.
- Fig. 1 shows schematically a car with a body 1, front wheels 2, rear wheels 3, an engine 4 and one Car radio 5, the speakers 6, 7 only hinted at are. With double arrows are each on the wheels acting forces and the outgoing from the engine on the Body forces acting illustrated. One notices, that vertical forces are decisive Share in structure-borne noise. An acceleration sensor 8 is therefore arranged so that it is vertical Acceleration detected.
- the acceleration sensor 8 is on the Base plate of the car radio 5 arranged. He can therefore in simply connected to the circuit of the car radio will.
- Fig. 3 shows a block diagram of an inventive Facility where the not specifically for the Invention adapted parts of the car radio, such as for example receiving part, if necessary Cassette player, stereo decoder and audio amplifier in one Circuit 11 are summarized as an NF source.
- the audio signals L and R one Multi-channel equalizer 12 supplied with four outputs four power amplifiers 13, 14, 15, 16 for four loudspeakers 17, 18, 19, 20 is connected.
- LF and RF mean the signals for the left and right front speakers, while the LR and RR signals are the left signals Label rear and right rear speakers.
- the Power stages 14 and 15 invert the output signal, which is indicated by a minus sign.
- the output signal of the acceleration sensor 8 becomes one Signal processing circuit 21 supplied by the Output signals of the multi-channel equalizer 12 is controllable.
- the signal processing circuit 21 processes this Output signal from the acceleration sensor and the Output signals of the multi-channel equalizer with known ones Algorithms.
- the output signal of the Signal processing circuit 21 then becomes the multi-channel equalizer 12 forwarded to in several different Frequency bands the amplification of the audio signals L and R to Taxes.
Landscapes
- 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)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
Description
- Fig. 1
- ein Kraftfahrzeug mit einer erfindungsgemäßen Einrichtung,
- Fig. 2
- ein Autoradio mit einem an der unteren Gehäusewand angeordneten Beschleunigungssensor und
- Fig. 3
- ein Blockschaltbild einer erfindungsgemäßen Einrichtung.
Claims (6)
- Einrichtung zur fahrgeräuschabhängigen Steuerung der Lautstärke eines Autoradios, die einen Sensor zur Erfassung eines fahrgeräuschabhängigen Signals aufweist, wobei der Ausgang des Sensors mit einer Signalverarbeitungsschaltung (21) des Autoradios zur Steuerung der Lautstärke verbunden ist, dadurch gekennzeichnet, daß der Sensor ein mechanisch mit der Karosserie (1) des Fahrzeugs verbundener Beschleunigungssensor (8) ist.
- Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Beschleunigungssensor (8) im wesentlichen vertikale Beschleunigungen mißt.
- Einrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Beschleunigungssensor (8) im Autoradio (5) angeordnet ist.
- Einrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Beschleunigungssensor (8) starr mit dem Gehäuse des Autoradios (5) verbunden ist.
- Einrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Beschleunigungssensor (8) eine Signalbandbreite von etwa 1 kHz aufweist.
- Einrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Ausgangssignal des Beschleunigungssensors (8) der Signalverarbeitungsschaltung (21) zugeführt ist, bei der es sich um eine Signalverarbeitungsschaltung mit einem vorgegebenen Algorithmus handelt, daß die Einrichtung einen Mehrkanal-Equalizer (12) aufweist, dem die Ausgangssignale der Signalverarbeitungsschaltung (21) und die von der NF-Quelle (11) des Autoradios erzeugten Audiosignale zugeführt sind, und daß die Ausgänge des Mehrkanal-Equalizers (12) mit Steuereingängen der Signalverarbeitungsschaltung (21) und mit Eingängen von Endstufen (13 bis 16) des Autoradios verbunden sind.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4430931 | 1994-08-31 | ||
| DE4430931A DE4430931A1 (de) | 1994-08-31 | 1994-08-31 | Einrichtung zur fahrgeräuschabhängigen Steuerung der Lautstärke eines Autoradios |
| PCT/DE1995/001071 WO1996007293A1 (de) | 1994-08-31 | 1995-08-16 | Einrichtung zur fahrgeräuschabhängigen steuerung der lautstärke eines autoradios |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0779014A1 EP0779014A1 (de) | 1997-06-18 |
| EP0779014B1 true EP0779014B1 (de) | 1998-11-11 |
Family
ID=6527027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95928425A Expired - Lifetime EP0779014B1 (de) | 1994-08-31 | 1995-08-16 | Einrichtung zur fahrgeräuschabhängigen steuerung der lautstärke eines autoradios |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6031918A (de) |
| EP (1) | EP0779014B1 (de) |
| JP (1) | JPH10504946A (de) |
| DE (2) | DE4430931A1 (de) |
| WO (1) | WO1996007293A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6295364B1 (en) * | 1998-03-30 | 2001-09-25 | Digisonix, Llc | Simplified communication system |
| DE19931270A1 (de) * | 1999-07-07 | 2001-01-18 | Harman Audio Electronic Sys | Automobiles Soundsystem und Automobil mit einem solchen |
| EP1247428B1 (de) * | 1999-12-09 | 2003-08-27 | Frederick Johannes Bruwer | Sprachsverteilungssystem |
| US6549629B2 (en) | 2001-02-21 | 2003-04-15 | Digisonix Llc | DVE system with normalized selection |
| US20040258254A1 (en) * | 2003-06-17 | 2004-12-23 | Mollon Eric L. | Automotive audio system adapted to roadway conditions |
| US20070015485A1 (en) * | 2005-07-14 | 2007-01-18 | Scosche Industries, Inc. | Wireless Media Source for Communication with Devices on Data Bus of Vehicle |
| DE102007021882A1 (de) * | 2007-05-10 | 2008-11-13 | Ford Global Technologies, LLC, Dearborn | Verfahren zur Optimierung des Geräuschempfindens in der Fahrgastzelle eines Kraftfahrzeuges, welches ein Audio-System aufweist |
| DE102009059680A1 (de) | 2009-12-19 | 2011-06-22 | Bayerische Motoren Werke Aktiengesellschaft, 80809 | Verfahren zur Ausgabe von Musik-Informationen in einem Fahrzeug |
| KR20230103641A (ko) * | 2021-12-31 | 2023-07-07 | 현대자동차주식회사 | 친환경 차량 및 그를 위한 음향 입출력 지원 방법 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2703025C3 (de) * | 1977-01-26 | 1981-04-02 | Reiner Dr.-Ing. 5270 Gummersbach Foerst | Fahrtsimulator |
| CH644974A5 (de) * | 1979-02-09 | 1984-08-31 | Blaupunkt Werke Gmbh | Schaltungsanordnung zum selbsttaetigen anpassen der lautstaerke mindestens eines lautsprechers an einen am lautsprecherort herrschenden stoergeraeuschpegel fuer rundfunkempfaenger. |
| US4958519A (en) * | 1982-01-25 | 1990-09-25 | The Board Of Regents Of The University Of Nebraska | Velocimeter |
| JPS59230313A (ja) * | 1983-06-14 | 1984-12-24 | Honda Motor Co Ltd | 車両のオ−デイオ装置 |
| DE3338413A1 (de) * | 1983-10-22 | 1985-05-02 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Schaltungsanordnung zum selbsttaetigen anpassen der lautstaerke eines lautsprechers an einen am lautsprecherort herrschenden stoergeraeuschpegel |
| JPS60229122A (ja) * | 1984-04-26 | 1985-11-14 | Genshiryoku Kogaku Shiken Center | 振動台制御装置 |
| GB8610842D0 (en) * | 1986-05-02 | 1986-06-11 | Bl Tech Ltd | Suspension system |
| DE3730763A1 (de) * | 1987-09-12 | 1989-03-30 | Blaupunkt Werke Gmbh | Schaltung zur stoergeraeuschkompensation |
| US4930862A (en) * | 1988-01-20 | 1990-06-05 | The Babcock & Wilcox Company | Fiberoptic microbend accelerometer |
| US5069071A (en) * | 1990-08-27 | 1991-12-03 | United Technologies Corporation | Vibration monitoring in the frequency domain with a capacitive accelerometer |
| GB2256101A (en) * | 1991-05-23 | 1992-11-25 | Robert David Jackson | Power supply alarm with indication of failure duration |
| JPH05301542A (ja) * | 1992-04-28 | 1993-11-16 | Pioneer Electron Corp | 車載用体感音響装置 |
| US5309518A (en) * | 1992-10-15 | 1994-05-03 | Bose Corporation | Multiple driver electroacoustical transducing |
| US5483692A (en) * | 1993-11-22 | 1996-01-09 | Chrysler Corporation | Automatic variable radio volume control system |
| FR2742861B1 (fr) * | 1995-12-22 | 1998-03-13 | Naphtachimie Sa | Procede et dispositif de mesure de vibrations |
| US5811821A (en) * | 1996-08-09 | 1998-09-22 | Park Scientific Instruments | Single axis vibration reducing system |
-
1994
- 1994-08-31 DE DE4430931A patent/DE4430931A1/de not_active Withdrawn
-
1995
- 1995-08-16 US US08/793,667 patent/US6031918A/en not_active Expired - Fee Related
- 1995-08-16 WO PCT/DE1995/001071 patent/WO1996007293A1/de not_active Ceased
- 1995-08-16 JP JP8508400A patent/JPH10504946A/ja active Pending
- 1995-08-16 EP EP95928425A patent/EP0779014B1/de not_active Expired - Lifetime
- 1995-08-16 DE DE59504237T patent/DE59504237D1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10504946A (ja) | 1998-05-12 |
| EP0779014A1 (de) | 1997-06-18 |
| DE59504237D1 (de) | 1998-12-17 |
| WO1996007293A1 (de) | 1996-03-07 |
| DE4430931A1 (de) | 1996-03-07 |
| US6031918A (en) | 2000-02-29 |
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