CN1167419A - Sound equipment for vehicle - Google Patents
Sound equipment for vehicle Download PDFInfo
- Publication number
- CN1167419A CN1167419A CN 97105439 CN97105439A CN1167419A CN 1167419 A CN1167419 A CN 1167419A CN 97105439 CN97105439 CN 97105439 CN 97105439 A CN97105439 A CN 97105439A CN 1167419 A CN1167419 A CN 1167419A
- Authority
- CN
- China
- Prior art keywords
- stereo set
- loudspeaker
- gain coefficient
- signal source
- balance point
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
Landscapes
- 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)
- Stereophonic Arrangements (AREA)
Abstract
Disclosed is a vehicle sound device (1), comprising at least two amplifying channels (3,4,5,6) used for providing output signals to drive the trumpets. With the aim of making a telephone device work by means of the sound device, the acoustic balance point of the replayed and received speech signals can be adjusted flexibly. The sound device can be driven by the sound signals of at least a first signal source (11,12,13) or the speech signals of the telephone device used as a second signal source (14); the sound device changes the gain coefficients (V<1>, V<2>, V<3>, V<4>) of the amplifying channels according to the drive signal sources (11,12,13,14); the acoustic insulation between the hand-free microphone and the trumpet can be realized to be optimized according to the vehicle type separately.
Description
The present invention relates to sound equipment for vehicle, this stereo set comprises at least two amplifier channels, and the latter respectively provides the output signal that drives loudspeaker according to the signal of signal source.
Known a kind of like this stereo set from Japan Patent 4-270539.This known device comprises the amplifying device that can drive four loudspeaker.This amplifying device settles the output signal of receiver turning, magnetic tape station or CD Player selectively.Installation device also, the latter comprises the hands-free microphone that generally is installed in vehicle drivers one side.For the voice signal that playback phone module when telephone device is worked receives, one and amplifying device disconnection in four loudspeaker of vehicle are as the loudspeaker of telephone device.
Adopt such stereo set, the acoustic balance point during telephone device work depends on the installation site of the loudspeaker of selecting for use.In addition, the volume of these loudspeaker of telephone device duration of work can not change.
An object of the present invention is the defined stereo set of introductory song section, the acoustic balance point when it makes telephone device work can be adjusted neatly.
According to the present invention, the method that achieves this end is: this stereo set can be by driving from the audio signal of at least a first signal source or from the voice signal in secondary signal source, particularly telephone device; The gain coefficient of each amplification channel can be adjusted separately; And described stereo set changes the gain coefficient of amplification channel according to the signal source that drives this stereo set.
As first signal source, for example, it is contemplated that magnetic tape equipment, tuner or CD (compact disk) player.The gain coefficient of each amplification channel can be set separately by means of the control element of control device by the user when first signal source is worked.If telephone device receives calling now, perhaps the user wants to send calling, and then the secondary signal source drives stereo set with the voice signal of telephone device.The switching that drives the signal source of stereo set can realize by the user, and for example, when he wants to send when calling out, perhaps, for example, under the situation that has telephone call signal to come in, or during successful connection, the automatic switchover of signal source takes place immediately.
Telephone device generally comprises hands-free microphone, and it generally is positioned at the driver left side.For get rid of the voice signal that the driver sends in advance and telephone device receives and the voice signal reset by loudspeaker between acoustic feedback, to guarantee that preferably the acoustic balance point is enough far away from hands-free microphone.Therefore, when being driven by the secondary signal source, stereo set is preferably adjusted the gain coefficient of each amplification channel, makes that the acoustic balance point of loudspeaker is enough far away from hands-free microphone.But, along with the feedback filter Progress in Research, also it is contemplated that, avoid feedback with such feedback filter.At the telephone device duration of work, the acoustic balance point is shifted to, and for example, driver's one side is in order to avoid the passenger unnecessarily is subjected to the interference of telephone conversation.By means of the gain coefficient that can adjust separately of amplification channel, the telephone device duration of work, the acoustic balance point can be selected individually neatly, thereby can adapt to the type of vehicle and the sensation of individual subscriber.The playback volume of the voice signal that telephone device receives also can be adjusted separately.
Useful embodiment of the present invention is characterised in that, stereo set comprises four amplification channels to drive four loudspeaker, and feasible gain coefficient by suitable each amplification channel of adjustment just can make the acoustic balance point of these loudspeaker move to any point of vehicle interior.
Now, general way is the front end that two loudspeaker are contained in vehicle interior, and two loudspeaker are contained in the rear portion, and in this case, one on a left side, and one on the right side.These four loudspeaker can be by four amplification channel individual drive of stereo set, and so suitable setting amplification channel just can make the acoustic balance point of loudspeaker move to the vehicle interior optional position.If stereo set is by the audio-signal-driven from first signal source, then by means of the control device of setting, the user can adjust the acoustic balance point to be fit to his taste and requirement.If vehicle has only driver one people, then acoustic balance point is preferably adjusted to left front driver's position.If vehicle has four passengers, the acoustic balance point is preferably disposed on the central point of vehicle interior.If driver or user want to send call now,,, switch the gain coefficient of amplification channel, mobile acoustic balance point just stereo set is driven by telephone device if perhaps telephone device receives calling.Since have four loudspeaker can be used for resetting now voice signal that telephone device receives just can move to the vehicle interior optional position at telephone device duration of work acoustic balance point.The acoustic balance point that the user selected when this acoustic balance point was worked with first signal source usually is different.Since the acoustic balance point can move to the vehicle interior optional position during telephone device work, acoustic balance point also just can be adjusted according to user's the requirement and the acoustic characteristic of vehicle interior.
Another useful embodiment of the present invention is characterised in that, continuously changes the gain coefficient of each amplification channel at interval at preset time, makes the acoustic balance point of loudspeaker continuously along the path movement of straight line basically.
In the preset time interval, continuously change each gain coefficient, the acoustic balance point is shifted between the position of expection cheeringly sleekly rather than suddenly.This time interval that changes each gain coefficient can be adjusted individually according to user's requirement and vehicle interior acoustic characteristic.
Another useful embodiment of the present invention is characterised in that, under situation about being driven by the secondary signal source, adjusts the gain coefficient of each amplification channel by this way, makes the acoustic balance point of loudspeaker be positioned at the front-seat passenger position.
The hands-free microphone of telephone device generally all is positioned at the position of vehicle left side near the driver.For fear of above-mentioned acoustic feedback, at the telephone device duration of work, the acoustic balance point of loudspeaker preferably moves to front-seat passenger's one side.
Another useful embodiment of the present invention is characterised in that when stereo set was driven by the secondary signal source, the gain coefficient that stereo set will switch to can be adjusted by means of software program by the user.
When stereo set was driven by first signal source, the gain coefficient of each amplification channel of stereo set can be adjusted by means of control device by the user in the course of the work.Like this, if driver or passenger propose any concrete requirement, the acoustic balance point that the user can both adjust horn for vehicle is satisfied.If the driver wants to send call now, perhaps telephone device receives call, and preferably the driver need not to adjust the gain coefficient of amplification channel during each call, avoids acoustic feedback occurring during the phone works.Really, during phone works, the acoustic balance point of loudspeaker preferably automatically moves on to the predefined point of vehicle interior.For example, can accomplish this point by means of EEPROM (EEPROM (Electrically Erasable Programmable Read Only Memo)).If stereo set is packed into together with the loudspeaker that link to each other in the vehicle of given type, then can record the optimal acoustic balance point of loudspeaker during the phone works, and it is enrolled among the EEPROM.So just might make the acoustic balance point that the vehicle of any kind is all realized optimization.In addition, it is contemplated that implement a kind of software program in stereo set, the user can adjust the gain coefficient of each amplification channel separately by this, thereby by means of relevant control device, adjusts the acoustic balance point of loudspeaker at the telephone device duration of work.In case set the gain coefficient of each amplification channel of telephone device duration of work, stereo set automatically switches to these gain coefficients when being driven by telephone device, thereby does not have acoustic feedback when guaranteeing phone works.
Another useful embodiment of the present invention is characterised in that stereo set automatically changes the frequency response of each amplification channel according to the signal source that drives stereo set.
Like this, for example, the bass of just can decaying automatically during phone works makes the frequency response of amplification channel meet user's individual taste.The user can, for example, the frequency response of the gain coefficient of using when preestablishing phone operation by means of software program.
The embodiment of the demonstration of representing with schematic diagram of the present invention is described in more detail with reference to Fig. 1 and Fig. 2 below.Among the figure:
Fig. 1 is the block diagram of sound equipment for vehicle, and this equipment can be driven by telephone device, tuner, magnetic tape equipment and CD Player, and stereo set has four amplification channels, drives four loudspeaker by this,
Fig. 2 schematically represents vehicle inside and is contained in four inner loudspeaker, be arranged in the hands-free microphone of inner left front, telephone device and expression guarantee not have satisfactorily during the phone operation hatched area of possible position of the loudspeaker acoustics balance point of acoustics feedback.
What Fig. 1 schematically represented is the block diagram of stereo set 1.Stereo set 1 comprises the amplifier 2 that has first amplification channel 3, second amplification channel 4, the 3rd amplification channel 5 and the 4th amplification channel 6.First amplification channel has gain coefficient V
1, second amplification channel has gain coefficient V
2, the 3rd amplification channel has gain coefficient V
3, and the 4th amplification channel has gain coefficient V
4 First loudspeaker 7, second loudspeaker 8, the 3rd loudspeaker 9 and the 4th loudspeaker 10 are connected to stereo set 1.Amplification channel 3 to 6 provides with gain coefficient V
1To V
4Amplified output signal S
1To S
4The output signal S of amplifying device 2
1To S
4 Drive loudspeaker 7 to 10.
First signal source is tuner 11, magnetic tape equipment 12 and CD Player 13, and the secondary signal source is a telephone device 14.Tuner 11, magnetic tape equipment 12 and CD Player 13 and telephone device 14 are coupled to the input of amplifier 2.Telephone device 14 has antenna 15 and hands-free microphone 16.Stereo set 1 comprises control device 17, and the latter is coupled to amplifier 2, tuner 11, magnetic tape equipment 12 and CD Player 13 and telephone device 14 two-wayly.Control device 17 can, for example, realize with microprocessor.Gain coefficient V
1To V
4Can control separately by control device 17.This control device 17 is also controlled which signal source (tuner 11, magnetic tape equipment 12 and CD Player 13 or telephone device 14) driving amplifier 2.Control device 17 is coupled to control panel/display unit 18.By means of this control panel/display unit 18, the user can deliver to control signal control device 17, and its information can be transmitted by control device 17, so that control amplifier 2, tuner 11, magnetic tape equipment 12 and CD Player 13 and telephone device 14.In addition, the visual information that the user uses for example, about the information in the broadcasting station that receives, the tracking of CD Player 10, may be displayed on control panel/display unit 18.
Four loudspeaker are contained on four angles of vehicle interior basically.If stereo set is driven by first signal source (tuner 11, magnetic tape equipment 12 or CD Player 13), then the gain coefficient V of amplifier 2 amplification channels 3 to 6
1To V
4Can adjust separately by control panel/display unit 18 and control device 17 by the user.If have only driver one people on the vehicle, he preferably adjusts the gain coefficient V of amplification channel 3 to 6 like this
1To V
4, make the acoustic balance point of loudspeaker 7 to 10 be positioned at position near the driver.But, if on the vehicle, for example, four passengers being arranged, driver or user will adjust gain coefficient V once more like this
1To V
4, make the acoustic balance point of loudspeaker 7 to 10 be positioned at the position at vehicle interior center, four passengers all can suitably hear audio signal as a result.The driver is preferably in and leaves before gain coefficient V
1To V
4Carry out this adjustment.If the driver of vehicle wanted to carry out call afterwards, he can indicate this point to control device 17 by control panel/display unit 18.If telephone device 14 is received a call, control device 17 will detect automatically.No matter under any situation, stereo set all is set to phone operation by means of control device 17, and in other words, the voice signal that the antenna of telephone device 14 15 receives is sent to amplifier 2, by amplification channel 3 to 6 with amplification coefficient V
1To V
4Amplify, and send the user to 10 to acoustically by loudspeaker 7.In order to carry out phone operation, owing to switch the gain coefficient V of amplification channel 3 to 6
1To V
4, the acoustic balance point of loudspeaker 7 to 10 automatically switches to fixing precalculated position.Since the hands-free microphone of telephone device 14 16 generally all is positioned near the position the vehicle left side driver, the fixing precalculated position of the acoustic balance point of loudspeaker 7 to 10 generally all is to adjust like this during the phone operation, it is enough far away to make that the acoustic balance point leaves hands-free microphone 16, in order to avoid between talk the other side voice signal that send and that come out by loudspeaker 7 to 10 playbacks of voice signal that the driver sends and driver acoustic feedback takes place.Suitably adjust gain coefficient V
1To V
4, the acoustic balance point of phone operation can move to the vehicle interior optional position, adapts to the acoustic characteristic of relevant vehicle interior and driver or user's hope and requirement with this.Since control device can detect call and arrive, or the user by control panel/display unit 18 when control device points out that he wants to carry out call, gain coefficient V
1To V
4Switching carry out automatically, so the user needn't change gain coefficient on one's own initiative,, but can make a phone call immediately, and the acoustic balance point of loudspeaker 7 to 10 has been in the precalculated position so that make a phone call.
The gain coefficient V that amplifier 2 switches to when the voice signal by telephone device 14 drives
1To V
4Set point can, for example, connect when beginning to operate at stereo set 1 and to select by the user.For this purpose, it is contemplated that, for example, gain coefficient is stored in the EEPROM that control device can visit.Also a kind of software program can be carried out in control device 17, the gain coefficient V that stereo set 1 will switch to when making the user select phone operation by control panel/display unit 18
1To V
4Gain coefficient V by control panel/display unit 18
1To V
4This selection very friendly to the user, whenever the user wants to change, and just can change.
The acoustic balance point of loudspeaker 7 to 10 when tuner 11, magnetic tape equipment 12 or CD Player 13 are worked, the acoustic balance point that requires for fear of acoustic feedback occurring during with telephone device 14 work is different, so acoustic balance point preferably is not unexpected switching, but in a preset time interval, progressively move.This of the acoustic balance point of acoustic balance point during audio operation when phone operation progressively changes, can be with control device 17 by adjusting gain coefficient V step by step continuously
1To V
4Realize.Transfer gradually between these two acoustic balance points, it is level and smooth and happy that the user can feel.Realize gain coefficient V
1To V
4The time interval of switching can make it to adapt to the acoustic characteristic of this type of vehicle, user's individual taste and requirement by means of the software program correct of implementing in EEPROM 19 or the control device 17.
Obviously, stereo set 1 also can be by driving such as other signal sources such as television equipment and navigation system.Similarly, amplifier 2 can comprise more than four amplification channels with more than four loudspeaker.Also tuner 11, magnetic tape equipment 12, CD Player 13 and telephone device 14 can be packed into individually or together in the stereo set.In addition, control device 17 and amplifier 2 can be made independent equipment.It is also conceivable that amplifier 2 is preamplifiers of a driving output amplifier, and output amplifier drives loudspeaker 7 to 10 again.The selected implementation method of stereo set 1 and amplifier 2 and control device 17, the separate module that is attached thereto, that is tuner 11, magnetic tape equipment 12, CD Player 13 and telephone device 14 all should only be regarded example as.In addition, also can realize amplifier 2 with the form of digital signal processor.Like this, just might realize that for example, termporal filter by this can filtering is undesirable echoes.
Fig. 2 schematically represents vehicle inside 20, and other are all not shown.According to Fig. 1, loudspeaker 8 are placed on the left-front corner of vehicle interior 20, and loudspeaker 9 are placed on right front angle, and loudspeaker 7 are placed on left rear corner, and loudspeaker 10 are placed on right back angle.In the zone, left front of vehicle interior, driver's seat 21 represents with a rectangle that schematically driver's head is represented with a garden.The hands-free microphone of Fig. 1 telephone device is placed in inner 20 left front near driver's seat 21.
As an example, be illustrated in the first acoustic balance point 23 at vehicle interior 20 centers, under the situation that four passengers are arranged, adopt when it is preferably in Fig. 1 audio signal source (tuner 11, magnetic tape equipment 12, CD Player 13) one work.If drive by Fig. 1 telephone device now, carry out phone operation, then switch the gain coefficient of Fig. 1 amplifier 2 amplification channels, loudspeaker 7,8 as a result, and 9 and 10 acoustic balance point moves.Dashed area 27 expression can guarantee that hands-free microphone works satisfactorily among Fig. 2, when not having acoustic feedback, and the possible position of the acoustic balance point that phone operation is used.For instance, arrow 24a, the path of the possible acoustic balance point of phone operation 24,25 and 26 is shifted in 25a and 26a indication from the acoustic balance point 23 of audio operation.Continuous several arrow 24a is used for representing that the mobile of acoustic balance point 23 preferably carries out continuously in the preset time interval, make acoustic balance point 23 transfer to acoustic balance point 24 step by step smoothly.The acoustic balance point 24,25 that illustrates and 26 can for example, be set by means of EEPROM or by means of software program by the user.When the stereo set 1 of Fig. 1 was driven by the voice signal of the telephone device 14 of Fig. 1, acoustic balance point 23 was automatically moved to default phone operation acoustic balance point, and for example 24.
By means of just utilizing all loudspeaker that are contained in the vehicle to reset from the voice signal of automobile telephone device according to stereo set of the present invention.The loudspeaker acoustics balance point of using during phone operation can preestablish individually, and is automatically switching under the situation of phone operation on this default position.
Claims (6)
1. for motor vehicle stereo set, this stereo set (1) comprises at least two amplification channels (3,4,5,6), the signal that the latter comes according to signal source (11,12,13,14) respectively provides the output signal that can drive loudspeaker (7,8,9,10), it is characterized in that:
The acoustic signal that this stereo set (1) can be come by at least one first signal source (11,12,13) or drive the gain coefficient (V of amplification channel (3,4,5,6) by the voice signal that secondary signal source (14), especially telephone device (14) come
1, V
2, V
3, V
4) can adjust separately, and stereo set (1) is according to the signal source (11,12,13 that drives stereo set (1); 14) change the gain coefficient (V of amplification channel (3,4,5,6)
1, V
2, V
3, V
4).
2. the stereo set that requires of claim 1, it is characterized in that: stereo set (1) comprises at least four amplification channels (3,4,5,6), be used for driving by this way four loudspeaker (7,8,9,10), make by suitably adjusting the gain coefficient (V of amplification channel (3,4,5,6)
1, V
2, V
3, V
4), with the acoustic balance point (23 of loudspeaker; 24,25,26) move to the optional position of vehicle interior (20).
3. claim 1 or 2 stereo sets that require is characterized in that: the gain coefficient (V that changes amplification channel (3,4,5,6) in the preset time interval
1, V
2, V
3, V
4), make the acoustic balance point (23 of loudspeaker; 24,25,26) move continuously along the path of substantial linear.
4. the desired stereo set of any one among the claim 1 to 3 is characterized in that: under the situation of secondary signal source (14) driving, adjust the gain coefficient (V of amplification channel (3,4,5,6)
1, V
2, V
3, V
4), make the acoustic balance point (23 of loudspeaker; 24,25,26) move to front-seat passenger's position.
5. the desired stereo set of any one among the claim 1 to 4 is characterized in that: the gain coefficient (V that stereo set (1) will be adjusted to when secondary signal source (14) drove
1, V
2, V
3, V
4), can adjust by means of software program by the user.
6. the desired stereo set of any one among the claim 1 to 5 is characterized in that: stereo set is according to the signal source (11,12,13 that drives stereo set; 14) change amplification channel (V
1, V
2, V
3, V
4) frequency response.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19620980.3 | 1996-05-24 | ||
| DE1996120980 DE19620980A1 (en) | 1996-05-24 | 1996-05-24 | Audio device for a vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1167419A true CN1167419A (en) | 1997-12-10 |
Family
ID=7795235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97105439 Pending CN1167419A (en) | 1996-05-24 | 1997-05-23 | Sound equipment for vehicle |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0809413A1 (en) |
| JP (1) | JPH1066189A (en) |
| KR (1) | KR970078736A (en) |
| CN (1) | CN1167419A (en) |
| DE (1) | DE19620980A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109478872A (en) * | 2016-03-30 | 2019-03-15 | 西门子移动有限公司 | Method and apparatus for controlling the output volume of at least one acoustic output equipment |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19742797C1 (en) * | 1997-09-27 | 1999-04-22 | Grundig Ag | Motor vehicle communication device |
| JP3042681B2 (en) * | 1998-04-15 | 2000-05-15 | 怡利電子工業股▲ひん▼有限公司 | A handset that does not need to be gripped by a mobile phone combined with the speaker of a car audio system |
| DE19942858C2 (en) * | 1999-09-08 | 2003-04-03 | Am3 Automotive Multimedia Ag | Seat-related sound system |
| DE19946344A1 (en) * | 1999-09-28 | 2001-03-29 | Bosch Gmbh Robert | Method for reproducing an audio signal of a mobile phone with a car radio and car radio with a hands-free device for a mobile phone |
| DE19958836A1 (en) | 1999-11-29 | 2001-05-31 | Deutsche Telekom Ag | In car communication system has individual microphones and loudspeakers allows easy conversation |
| JP4330302B2 (en) | 2001-09-27 | 2009-09-16 | 日産自動車株式会社 | Audio input / output device |
| KR100410768B1 (en) * | 2001-10-11 | 2003-12-18 | 현대자동차주식회사 | Lines busy signal switching device in hands free system |
| WO2004068730A1 (en) * | 2003-01-23 | 2004-08-12 | Harman Becker Automotive Systems Gmbh | Audio system with balance setting based on information addresses |
| JP2005191668A (en) * | 2003-12-24 | 2005-07-14 | Pioneer Electronic Corp | Utterance control apparatus, method therefor, program therefor, and recording medium with the program recorded thereon |
| US7688992B2 (en) | 2005-09-12 | 2010-03-30 | Richard Aylward | Seat electroacoustical transducing |
| EP1860918B1 (en) | 2006-05-23 | 2017-07-05 | Harman Becker Automotive Systems GmbH | Communication system and method for controlling the output of an audio signal |
| US8724827B2 (en) | 2007-05-04 | 2014-05-13 | Bose Corporation | System and method for directionally radiating sound |
| US9100748B2 (en) | 2007-05-04 | 2015-08-04 | Bose Corporation | System and method for directionally radiating sound |
| US8325936B2 (en) | 2007-05-04 | 2012-12-04 | Bose Corporation | Directionally radiating sound in a vehicle |
| US20080273722A1 (en) * | 2007-05-04 | 2008-11-06 | Aylward J Richard | Directionally radiating sound in a vehicle |
| US8483413B2 (en) | 2007-05-04 | 2013-07-09 | Bose Corporation | System and method for directionally radiating sound |
| JP4913120B2 (en) * | 2008-12-22 | 2012-04-11 | ハーマン ベッカー オートモーティブ システムズ ゲーエムベーハー | Audio system with balance setting based on information address |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947900A (en) * | 1982-09-10 | 1984-03-17 | Fujitsu Ten Ltd | Balanced fader circuit |
| DE3903461A1 (en) * | 1989-02-06 | 1990-08-09 | Grundig Emv | COMBINATION OF A CAR RADIO WITH OTHER COMMUNICATION MEANS |
| AU5095190A (en) * | 1989-02-14 | 1990-09-05 | In-Car Systems Limited | Vehicle telephone apparatus |
| JPH04284725A (en) * | 1991-03-14 | 1992-10-09 | Pioneer Electron Corp | Rds receiver |
| JPH06296158A (en) * | 1993-04-07 | 1994-10-21 | Clarion Co Ltd | On-vehicle audio equipment |
-
1996
- 1996-05-24 DE DE1996120980 patent/DE19620980A1/en not_active Withdrawn
-
1997
- 1997-05-16 EP EP97201495A patent/EP0809413A1/en not_active Withdrawn
- 1997-05-23 CN CN 97105439 patent/CN1167419A/en active Pending
- 1997-05-23 KR KR1019970021251A patent/KR970078736A/en not_active Application Discontinuation
- 1997-05-26 JP JP9134797A patent/JPH1066189A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109478872A (en) * | 2016-03-30 | 2019-03-15 | 西门子移动有限公司 | Method and apparatus for controlling the output volume of at least one acoustic output equipment |
| CN109478872B (en) * | 2016-03-30 | 2022-10-11 | 西门子交通有限公司 | Method and apparatus for controlling output volume of at least one acoustic output device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19620980A1 (en) | 1997-11-27 |
| JPH1066189A (en) | 1998-03-06 |
| KR970078736A (en) | 1997-12-12 |
| EP0809413A1 (en) | 1997-11-26 |
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