EP4315318A1 - Verfahren und vorrichtung zur akustischen ausgabe eines funktionalen systemgeräuschs eines fahrzeugs - Google Patents
Verfahren und vorrichtung zur akustischen ausgabe eines funktionalen systemgeräuschs eines fahrzeugsInfo
- Publication number
- EP4315318A1 EP4315318A1 EP22707735.1A EP22707735A EP4315318A1 EP 4315318 A1 EP4315318 A1 EP 4315318A1 EP 22707735 A EP22707735 A EP 22707735A EP 4315318 A1 EP4315318 A1 EP 4315318A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- frequency
- audio data
- filter
- functional system
- 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
Links
Classifications
-
- 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
- G10K15/00—Acoustics not otherwise provided for
- G10K15/02—Synthesis of acoustic waves
Definitions
- the present invention relates to a method and a device for the acoustic output of a functional system noise of a vehicle.
- Audio data which are characteristic of a frequency spectrum of the functional system noise, are determined or retrieved and, based on this, an audio signal is provided for output to a user of the vehicle by an acoustic output device.
- a .wav sound file has usually been used in vehicles for the turn signal, which is optionally supplemented by a speed-dependent volume adjustment (abbreviated as "GALA" for speed-dependent volume adjustment).
- GALA speed-dependent volume adjustment
- GALA speed-dependent loudness adjustment
- noise cancellation is known from the prior art in headphones for suppressing ambient noise.
- the "noise cancellation” principle is more complex and expensive and also requires hardware that has not yet been used in the vehicle (possibly because of the costs).
- US 2016/0185282 A1 discloses a turn-off audio module that uses audio filters to filter out unwanted frequencies. Furthermore, the turning audio module can have an amplifier that enables the volume of the turning audio signal to be reduced and/or increased step by step.
- DE 10359 126 A1 discloses a device and a method for generating a turn signal noise.
- the turn signal noise on the corresponding side of the vehicle can be louder and therefore more perceptible and spatially localizable.
- the volume of the turn signal noise can be adjusted to a noise level in the vehicle interior or to specific driving situations (e.g. when the vehicle is stationary).
- the object of the present invention is to overcome the disadvantages known from the prior art and to provide a method for the vehicle or an audio module of the vehicle which is used for audio playback of functional system noises and which in particular only allows one sound file and to provide a device for the acoustic output of a functional system noise, which works for all situations, in particular equally while the vehicle is being driven (at high speeds) and when stationary, and is perceived as pleasant by the user of the vehicle.
- a method for acoustically outputting a functional system noise of a vehicle includes detecting a driving speed of the vehicle. Furthermore, audio data is determined which is characteristic of a frequency spectrum of the functional system noise. Furthermore, the audio data based on the driving speed of the vehicle is processed into adapted audio data in such a way that at least one frequency and/or at least one frequency range within the frequency spectrum is changed, in particular increased and/or decreased.
- the amplitude of the functional system noise at the frequency or in the frequency range is preferably changed, in particular increased and/or reduced.
- an audio signal based on the adjusted audio data is provided in particular for output to a user by (at least) one acoustic output device for the vehicle.
- the acoustic output device is preferably an acoustic output device of the vehicle and in particular a loudspeaker of the vehicle.
- the acoustic output device is preferably part of an audio system of the vehicle. This can also be a (mobile) end device (of a user) that can be (freely) moved in relation to the vehicle.
- the method relates to an audio playback of a functional system noise (also referred to as a functional system sound), with a change in the functional system noise, in particular a change in the frequency spectrum of the functional system noise, preferably being made for audio playback as a function of the (driving) speed of the vehicle.
- a functional system noise also referred to as a functional system sound
- the change in the frequency spectrum is preferably not a (global) scaling of the complete frequency spectrum (for example by changing a volume of the entire functional system sound).
- the change in the frequency spectrum is preferably a change in the functional system sound, in particular by raising and/or lowering individual frequencies or frequency ranges.
- the original frequency spectrum and the changed frequency spectrum differ, especially at the same volume.
- the proposed method offers the advantage of (speed-dependent) matching of the output sound or the output functional system noise with the ambient noise, which is achieved by a speed-dependent increase and/or decrease in frequency ranges of the functional system noise.
- the sound or the functional system noise when stationary (of the vehicle) is perceived more pleasantly than in the prior art.
- the sound or the functional system noise also meets the requirements (such as perceptibility) while driving.
- the proposed method is comparatively inexpensive, since the parameters, such as (environmental and/or vehicle interior) noise, do not have to be measured in real time. Another advantage is that no new sounds or functional system noises are designed and have to be optimized specifically for each model.
- the method advantageously proposes a cost-effective, effective method that can be implemented with comparatively little technical effort (in particular, a simple method).
- this method offers the advantage that it requires little computing power and is therefore high-performance.
- At least one frequency range is preferred as a function of the (driving) speed of the vehicle, and particular preference is given to certain or predefined frequency ranges depending on the (driving) speed of the vehicle by processing the data (towards the changed audio data), and in particular by means of "EQing" (equalizing), amplified or weakened.
- the functional system noise is in particular a noise relevant to driving (or a functional sound relevant to driving).
- the functional system noise is preferably selected from a group that includes a turn signal or a direction indicator of the vehicle, warning and/or notification tones of the vehicle, noises for acoustic feedback or noises for acoustic feedback (e.g. from a navigation device). output voice commands, and the like, and combinations thereof.
- the audio data which are characteristic of a frequency spectrum of the functional system noise, or data characteristic of this, are preferably retrieved from a (in particular internal) storage device of the vehicle.
- a determination of the audio data can be understood as a retrieval of this data from the storage device.
- a determination of the audio data is preferably triggered and/or effected as part of or by actuating an operating element (such as the direction indicator) and/or a (made) user input.
- At least one frequency range within the frequency spectrum is lowered when the vehicle speed decreases (compared to at least one other frequency range and preferably to all other frequency ranges).
- This frequency range is preferably frequencies which are higher than 800 Hz, preferably higher than 1000 Hz, preferably higher than 1500 Hz and particularly preferably higher than 2000 Hz. This offers the advantage that high frequency ranges at comparatively low driving speeds have a lower Have a share of the functional system noise and have a lower volume.
- At least one frequency range within the frequency spectrum is preferably amplified when the vehicle speed increases (compared to at least one other frequency range and preferably to all other frequency ranges).
- This frequency range is preferably frequencies which are higher than 800 Hz, preferably higher than 1000 Hz, preferably higher than 1500 Hz and particularly preferably higher than 2000 Hz. This has the advantage that the property that high frequencies drive noise can penetrate well and be perceived well at comparatively high speeds, can be used more and more here with increasing vehicle speeds.
- the signals in that area are preferably filtered more strongly in order to filter the areas that are often sharp and that are perceived as unpleasant by various people.
- frequencies are preferred which are higher than 1000 Hz
- frequencies which are higher than 1.5 kHz are preferred
- frequencies which are higher than 2000 Hz amplified when the (driving) speed of the vehicle increases.
- the frequency range below this frequency range between 1.5 kHz and 5 kHz, preferably between 2 kHz and 5 kHz, preferably remains essentially the same or unchanged, at least above a predetermined driving speed of the vehicle.
- Frequencies that are higher than 2 kHz are preferred when the (driving) speed of the vehicle decreases, preferably frequencies that are higher than 1.5 kHz when the (driving) speed of the vehicle continues to decrease, and when the (driving) speed of the Vehicle frequencies that are higher than 1000 Hz are lowered.
- the frequencies that are essentially not lowered preferably remain essentially unchanged.At lower speeds, the high frequencies that are often perceived as unpleasant and too present are thus advantageously reduced.
- the frequency range below this frequency range between 1.5 kHz and 5 kHz, preferably between 2 kHz and 5 kHz, preferably remains essentially the same or unchanged, at least above a predetermined driving speed of the vehicle.
- a limit frequency is provided, above which all system noise components or all frequencies are reduced. Frequencies below this limit frequency are preferably not raised (nor lowered (in relation to the frequency spectrum)). The frequencies below this limit frequency preferably remain unchanged (essentially or with the exception of a transition range).
- the limit frequency is preferably selected in a range between 800 Hz and 5000 Hz, preferably between 1000 Hz and 3000 Hz, preferably between 1000 Hz and 2500 Hz, preferably between 1500 Hz and 2500 Hz and particularly preferably between 1800 Hz and 2200 Hz.
- the limit frequency is preferably selected at least at 700 Hz and preferably at least 800 Hz, at least at a predetermined first driving speed.
- the limit frequency is preferably selected at least at a predetermined second driving speed, which is greater than the first driving speed at at least 1000 Hz.
- the limit frequency is preferably selected at least at a predetermined third driving speed, which is greater than the second driving speed at at least 2000 Hz. Preference is given to starting at a fourth driving speed, which is greater than that third driving speed no change in the frequency spectrum and in particular no application of a filter.
- the limit frequency depends on the driving speed of the vehicle. In this way, it can advantageously be ensured that larger frequency ranges of higher frequencies are reduced as the speed decreases.
- the limit frequency preferably changes essentially continuously with the driving speed of the vehicle.
- the limit frequency preferably decreases as the vehicle speed decreases.
- the cut-off frequency preferably increases as the vehicle speed increases.
- the audio data is processed by using a filter, the filter to be used having at least one filter parameter which is determined as a function of the driving speed of the vehicle.
- a value for (in particular each) filter parameter can preferably be derived for each driving speed.
- Each driving speed is preferably assigned at least one and preferably each filter parameter.
- What is known as a gain or an increase in volume or a decrease in volume (or change in amplitude), which results from the processing of the audio data (at the set frequency), can preferably be set and/or changed as a filter parameter.
- a filter quality Q which is understood in particular as a slope steepness of the filter used, is preferably adjustable and/or changeable as a filter parameter.
- Q it is possible in particular to set how large the range around a specified center frequency (frequency band) is to be processed by data processing or an equalizer.
- a center frequency and/or a cut-off frequency of the filter (as a filter parameter) can preferably also be set and/or specified.
- the filter parameters can be changed in a user-specific manner.
- the filter is selected from a group of filters including high-pass filters, low-pass filters, band-pass filters, band-stop filters, band-stop filters, notch filters, shelving filters (high-shelf; low-shelf), and the like, and combinations thereof.
- the volume of the entire output functional system noise is preferably additionally increased as the driving speed increases.
- the at least one frequency and/or the at least one frequency range is changed on the basis of a vehicle-specific data record, which is preferably stored on a memory device of the vehicle.
- a value for a filter parameter can be stored (in the memory device) for predetermined driving speeds.
- a value for at least one filter parameter and preferably for all filter parameters can preferably be interpolated from this for each driving speed.
- the changed audio data is determined on the basis of a ventilation level (in addition to or as an alternative to the driving speed of the vehicle) of a ventilation device of the vehicle.
- the noise of the ventilation device of the vehicle can thus advantageously also be taken into account when outputting functional system noises.
- the present invention is further directed to a device for the acoustic output of a functional system noise of a vehicle, which is suitable and intended for determining audio data which are characteristic of a frequency spectrum of the functional system noise and an audio signal based on audio Provide data for output to a user through an acoustic output device for the vehicle.
- the device has a detection device which is configured to detect (and/or determine) a driving speed of the vehicle.
- the device also has a data processing device which is suitable and intended for processing audio data based on the driving speed of the vehicle into adapted audio data in such a way that at least one frequency and/or at least one frequency range within the frequency spectrum is changed.
- the device is configured to provide the audio signal on the basis of the adjusted audio data.
- At least one predefined frequency range (by means of the data processing device, in particular by means of “EQing”) is amplified or weakened depending on the speed.
- the predefined frequency range is preferably changed relatively (in terms of its amplitude and/or volume) and in particular amplified or weakened, in particular in relation to at least one other frequency range of the frequency spectrum of the functional system noise.
- the device for the acoustic output of a functional system noise is preferably set up, suitable and/or intended to carry out the method described above and all method steps already described above in connection with the method individually or in combination with one another.
- the method can be equipped with all of the features described in the context of the device for acoustically outputting a functional system noise of a vehicle, either individually or in combination with one another.
- the device for the acoustic output of a functional system noise can be part of an instrument cluster (abbreviation for combination instrument), which represents an instrument cluster of the vehicle, which has a speedometer, odometer, tachometer, fuel gauge, coolant temperature gauge, indicator lamp and/or direction indicators (turn signals).
- the present invention is also aimed at a vehicle, in particular a motor vehicle, comprising an above-described device for acoustically outputting a functional system noise according to one embodiment, with this device preferably being a (fixed and in particular non-destructively detachable) part of the vehicle .
- the vehicle can in particular be a (motorized) road vehicle.
- a vehicle can be a motor vehicle which, in particular, is a motor vehicle controlled by the driver himself (“driver only”), a semi-autonomous, autonomous (e.g. autonomy level 3 or 4 or 5 (of the SAE J3016 standard)) or self-driving motor vehicle is. Autonomy Level 5 designates fully automated vehicles.
- the vehicle can also be a driverless transport system.
- the vehicle can be controlled by a driver or drive autonomously.
- the vehicle can also be an air taxi, an airplane and another means of transportation or another type of vehicle, for example an air vehicle, water vehicle or rail vehicle.
- the present invention of the method for the acoustic output of a functional system noise of a vehicle has been described in connection with functional system noises in a vehicle or the vehicle.
- the present invention can also be applied to the acoustic output of music or other audio outputs (in particular while the vehicle is driving).
- a particularly dynamic “EQing” (“equalizing”) or a particularly dynamic sound control for music can be carried out on the basis of a function and/or in real time using the microphones in the vehicle.
- EQing equalizing
- the present invention is also aimed at a computer program or computer program product, comprising program means, in particular a program code, which represents or encodes at least individual method steps of the method according to the invention or combinations thereof and preferably one of the preferred embodiments described and is designed to be executed by a processor device.
- program means in particular a program code, which represents or encodes at least individual method steps of the method according to the invention or combinations thereof and preferably one of the preferred embodiments described and is designed to be executed by a processor device.
- the present invention is also aimed at a data memory on which at least one embodiment of the computer program according to the invention or a preferred embodiment of the computer program is stored. Further advantages and embodiments result from the attached drawings:
- FIG. 1 shows a schematic representation of a vehicle with a device according to the invention for the acoustic output of a functional system noise
- FIG. 3 shows a frequency spectrum of the turn signal noise from FIG. 2 after application of a so-called high shelf filter with first predefined filter parameters
- FIG. 4 shows a frequency spectrum of the turn signal noise from FIG. 2 after application of a so-called high shelf filter with second predefined filter parameters.
- FIG. 1 shows a schematic representation of a vehicle 1 with a device 10 according to the invention for the acoustic output of a functional system noise.
- the functional system noise can, for example, represent a turn signal noise (or a turn signal sound), which is transmitted to a user 13 when a turn signal 2 on the steering wheel 4 of the vehicle 1 is actuated by means of the acoustic output device 6 identified by the reference number 6 and shown schematically in Figure 1 is issued.
- the reference numeral 20 designates a volume L (in units of dB) of the blinker noise as a function of the frequency (in units of Hz).
- the sound file (“wav”) for the turn signal was optionally supplemented by a speed-dependent volume adjustment.
- high frequencies from the frequency spectrum of the turn signal noise which are identified here in FIG. 2 with the reference numeral 30, ensure better penetration of, for example, noise-intensive rolling noises that occur particularly at high driving speeds and are relatively low-frequency.
- these frequencies 30 in the range above 2000 Hz, for example, are often perceived as being too present, not valuable or too annoying. If you only reduce the volume, it often happens that you can no longer find the right level between pleasant and well audible.
- Fig. 3 shows a frequency spectrum 22 of the turn signal noise from Fig. 2 after application of a so-called high shelf filter (reference numerals 30, 32, 34) with first predetermined filter parameters, which can be changed in Fig. 3 with the controllers 12, 14 and 16 .
- a (main) frequency of the filter is set with controller 12, with controller 14 a "GAIN" of the filter (set here at -30 dB) and with controller 16 a value for (the filter quality) Q (between 0.025 and 40).
- gain is understood to mean, in particular, an increase in volume or a decrease in volume (change in amplitude, in units of dB) that results from the application of the filter to a noise.
- the filter quality Q is understood to mean, in particular, a slope steepness of the filter used.
- Q can be used to set how large the range 34 around the selected center frequency 32 (frequency band) should be changed by the filter.
- this is set to the maximum negative value at -30 dB.
- at higher frequencies at least from the set center frequency 32 by 2 kHz, there is a significant reduction in amplitude (by up to 30 dB).
- a high-shelf filter identified here, is applied to the blinker sound (from FIG. 2) with a frequency spectrum 20.
- the filter is active at 2000 Hz, a Q of 0.7 with -30 dB and thus significantly reduces the volume of the frequencies above 2000 Hz.
- the (adapted) frequency spectrum 22 obtained which is obtained from the frequency spectrum from FIG. 2 after the application of a filter, here a high-shelf filter, means that the sound is perceived as significantly more pleasant when stationary.
- a high-cut filter (so-called low-pass filter) is also possible.
- FIG. 4 shows the result of a frequency spectrum 22 obtained after application of a high-shelf filter to the blinker noise with a frequency spectrum from FIG. 2, the filter parameters being selected here (in part) differently than in FIG. In particular, other filter parameters for gain and Q were selected compared to the filter parameters selected in FIG. In the application of a high-shelf filter shown in FIG. 4 (identified by reference numerals 30, 32, 34), the values +0.96 dB for gain and the value 0.734 for Q were selected.
- the parameters of the filter (in particular mainly the gain range -30 dB to +1 dB) are adjusted here. This can be adapted to the respective vehicle using a data record.
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- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021203034.3A DE102021203034A1 (de) | 2021-03-26 | 2021-03-26 | Verfahren und Vorrichtung zur akustischen Ausgabe eines funktionalen Systemgeräuschs eines Fahrzeugs |
| PCT/EP2022/054643 WO2022199971A1 (de) | 2021-03-26 | 2022-02-24 | Verfahren und vorrichtung zur akustischen ausgabe eines funktionalen systemgeräuschs eines fahrzeugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4315318A1 true EP4315318A1 (de) | 2024-02-07 |
Family
ID=80629020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22707735.1A Pending EP4315318A1 (de) | 2021-03-26 | 2022-02-24 | Verfahren und vorrichtung zur akustischen ausgabe eines funktionalen systemgeräuschs eines fahrzeugs |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4315318A1 (de) |
| CN (1) | CN117121097A (de) |
| DE (1) | DE102021203034A1 (de) |
| WO (1) | WO2022199971A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4456077A1 (de) | 2023-04-27 | 2024-10-30 | Borealis AG | Maschinenlernen zur eigenschaftsvorhersage und rezeptempfehlung von polyolefinbasierten polymermischungen |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100218597B1 (ko) * | 1995-10-10 | 1999-09-01 | 차민호 | 자동차의 속도에 따른 오디오 시스템의 출력 조절장치 |
| DE10359126A1 (de) | 2003-12-17 | 2005-07-21 | Volkswagen Ag | Vorrichtung und Verfahren zur Erzeugung eines Blinkergeräusches |
| EP2530835B1 (de) * | 2011-05-30 | 2015-07-22 | Harman Becker Automotive Systems GmbH | Automatische Einstellung eines geschwindigkeitsabhängigen Enzerrungssteuerungssystems |
| DE102011119463A1 (de) * | 2011-11-25 | 2012-05-10 | Daimler Ag | Verfahren zum Erzeugen eines Fahrzeuggeräuschs,Geräuschgenerator und Kraftfahrzeug |
| DE102012112107B4 (de) * | 2012-12-11 | 2021-08-19 | Lear Corporation Gmbh | Verfahren und Vorrichtung zur synthetischen Erzeugung eines akustischen Signals |
| DE102013011144A1 (de) * | 2013-07-04 | 2015-01-08 | Daimler Ag | Steuergerät zur Klangsynthese |
| DE102014204404A1 (de) * | 2014-03-11 | 2015-09-17 | Neosonic - dataphonic GmbH & Product Sound Design GmbH GbR | Vorrichtung zur Synthese von Fahrzeuggeräuschen |
| KR101619255B1 (ko) * | 2014-11-14 | 2016-05-10 | 현대자동차 주식회사 | 차량 음향 제어 시스템 및 그 방법 |
| US9527440B2 (en) | 2014-12-29 | 2016-12-27 | Volkswagen Ag | Technologies for vehicle turn blinker audio and display processing |
| EP3048026B1 (de) | 2015-01-22 | 2020-03-11 | Volvo Car Corporation | Verfahren und system zur unterstützung eines fahrzeuginsassen bei der anpassung der fahrzeugeinstellungen |
| KR20170003785A (ko) | 2015-06-30 | 2017-01-10 | 엘에스오토모티브 주식회사 | 친환경 차량 사운드 제네레이터 장치 및 이의 제어 방법 |
| US20170291543A1 (en) | 2016-04-11 | 2017-10-12 | GM Global Technology Operations LLC | Context-aware alert systems and algorithms used therein |
| US10065561B1 (en) | 2018-01-17 | 2018-09-04 | Harman International Industries, Incorporated | System and method for vehicle noise masking |
| US11059420B2 (en) * | 2019-01-25 | 2021-07-13 | Volvo Car Corporation | Acoustic vehicle alerting system and method |
| DE102019121664B4 (de) | 2019-08-12 | 2023-10-05 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren und System zur Verminderung von Nebengeräuschen beim Ladevorgang eines Kraftfahrzeugs |
-
2021
- 2021-03-26 DE DE102021203034.3A patent/DE102021203034A1/de active Pending
-
2022
- 2022-02-24 CN CN202280024791.4A patent/CN117121097A/zh active Pending
- 2022-02-24 WO PCT/EP2022/054643 patent/WO2022199971A1/de not_active Ceased
- 2022-02-24 EP EP22707735.1A patent/EP4315318A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022199971A1 (de) | 2022-09-29 |
| DE102021203034A1 (de) | 2022-09-29 |
| CN117121097A (zh) | 2023-11-24 |
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