EP4226531A1 - Verfahren zur abhörsicherung einer stimme - Google Patents
Verfahren zur abhörsicherung einer stimmeInfo
- Publication number
- EP4226531A1 EP4226531A1 EP21835587.3A EP21835587A EP4226531A1 EP 4226531 A1 EP4226531 A1 EP 4226531A1 EP 21835587 A EP21835587 A EP 21835587A EP 4226531 A1 EP4226531 A1 EP 4226531A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- loudspeaker
- person
- microphone
- sound signals
- 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
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000005236 sound signal Effects 0.000 claims abstract description 45
- 230000004913 activation Effects 0.000 description 7
- 230000005237 high-frequency sound signal Effects 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
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
- 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
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/1752—Masking
- G10K11/1754—Speech masking
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/41—Jamming having variable characteristics characterized by the control of the jamming activation or deactivation time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K2203/00—Jamming of communication; Countermeasures
- H04K2203/10—Jamming or countermeasure used for a particular application
- H04K2203/12—Jamming or countermeasure used for a particular application for acoustic communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K2203/00—Jamming of communication; Countermeasures
- H04K2203/10—Jamming or countermeasure used for a particular application
- H04K2203/22—Jamming or countermeasure used for a particular application for communication related to vehicles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K2203/00—Jamming of communication; Countermeasures
- H04K2203/30—Jamming or countermeasure characterized by the infrastructure components
- H04K2203/34—Jamming or countermeasure characterized by the infrastructure components involving multiple cooperating jammers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/45—Jamming having variable characteristics characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called "look-through mode"
Definitions
- the invention relates to a method for protecting a voice from being eavesdropped in a vehicle and a system for protecting a voice from being eavesdropped in a vehicle.
- Document JPH0511780A describes a system for protecting a privacy of occupants of a vehicle.
- Document EP 2 876 639 A2 describes a system for masking a private conversation between occupants of a vehicle.
- the method according to the invention is intended to protect against eavesdropping or to protect the voice of at least one person in a vehicle, usually in an interior of the vehicle, in which at least one loudspeaker is located in the interior of the vehicle is or is arranged, is activated, with the at least one loudspeaker generating sound signals which have at least one frequency which is greater or higher than a cut-off frequency for sound that can be heard by the at least one person, these sound signals for interfering with signal reception or a signal reception quality of at least one microphone are generated when the at least one person articulates with their voice.
- the at least one microphone that is to be disturbed or is disturbed with the method can be arranged in the vehicle, on the vehicle, inside the vehicle and/or outside the vehicle.
- the at least one loudspeaker generates sound signals above the audible acoustic cut-off frequency, which can be designed or referred to as ultrasonic signals and/or hypersonic signals.
- the method is also provided to protect a conversation from being eavesdropped on by at least one person, ie only one person or a number of people, in a vehicle.
- at least one loudspeaker arranged in the vehicle is activated at least during the call, with the at least one loudspeaker generating sound signals, ie at least ultrasonic signals and/or hypersonic signals, for interfering with a microphone or its signal reception.
- the conversation occurs when the people articulate themselves with their voices and talk to each other, e.g. converse. It is also possible, for example, for the voice of a single person to be secured or protected against eavesdropping if, for example, the person sings or is talking to himself.
- a plurality of loudspeakers spatially distributed in the vehicle are generally activated to protect against eavesdropping. It is possible here to modulate the sound signals with regard to their amplitude and/or frequency above the audible cut-off frequency, with a time profile of the sound signals changing as a result of such a modulation. In this case, the sound signals are modulated within a frequency range, which is above the audible cut-off frequency within the ultrasonic range and/or hypersonic range, given a possible modulation of their frequency. If several sound signals are generated synchronously, one sound signal can be modulated in each case.
- the method can be carried out for a vehicle that has a closed interior that is delimited, among other things, by a roof and windows, and protection against eavesdropping can also be implemented if at least one window should be open. Furthermore, such protection against eavesdropping of the conversation is also possible for a vehicle designed as a convertible.
- the sound signals can be directed from the at least one loudspeaker in the direction of seating positions of people and thus of occupants in the vehicle, with these sound signals e.g. in the direction of a position at which a head of a respective person can be aligned with the correct sitting position. The position of the head is arranged above a seat surface of a respective seat of the vehicle.
- a seat sensor to check which seat in the vehicle is currently occupied by a person, with the sound signals being directed in particular in the direction of a head position of a seat that is occupied in each case.
- the at least one loudspeaker and thus the sound signals can be activated by manually actuating an activation switch, for example an activation button, of an input device.
- the method provides for the at least one loudspeaker to be aligned with a possible spatial position, for example whereabouts position, of the microphone in the vehicle.
- the microphone against which the conversation is protected against eavesdropping can also be designated or designed as an external microphone and/or as a vehicle-external microphone that is not designed as part of the vehicle's infrastructure.
- Such an external microphone can be arranged outside the vehicle, but also inside the vehicle, and can be designed or designated as a bug.
- Such an external microphone is usually vehicle-independent. This differs from a vehicle-internal microphone or a vehicle microphone that is designed as part of the vehicle's infrastructure and is installed in the vehicle, in particular in its interior.
- the voice of the at least one person is secured against eavesdropping at least against an external microphone. Since the at least one person possibly speaks consciously or intentionally into a vehicle-internal microphone or vehicle microphone, the sound signals for this, for example, vehicle-internal microphone can be compensated.
- a respective conversation is protected against eavesdropping against a microphone if this is desired by the person, with the person activating the associated eavesdropping protection.
- the voice of the at least one person can be secured against eavesdropping for at least one first microphone with the sound signals if this at least one first microphone is disturbed by sound signals.
- the voice of the at least one person can still be recorded if the at least one person deactivates such a protection against eavesdropping for the at least one second microphone by manually actuating a further corresponding activation switch.
- the system according to the invention is designed to protect the voice of at least one person in a vehicle from being eavesdropped, with the system having at least one loudspeaker in the vehicle, with the at least one loudspeaker being activated to prevent eavesdropping and in this case being designed or configured to transmit sound signals for Disrupting a signal reception or a signal reception quality of at least one microphone, which can be located in the vehicle, on the vehicle, inside and/or outside the vehicle, when the at least one person articulates with their voice.
- the sound signals generated by the at least one loudspeaker have a frequency that is greater or higher than a limit frequency for sound that can be heard by the at least one person.
- the system is designed to protect a conversation from being eavesdropped on by at least one person in a vehicle.
- the at least one loudspeaker of the system can be activated or activated at least during the call.
- the at least one loudspeaker is designed to generate sound signals, e.g. ultrasonic signals and/or hypersonic signals, at least during the conversation in order to jam a microphone, with such a microphone, against which the conversation is to be protected against eavesdropping, also being designed as an external microphone or can be designated.
- the at least one loudspeaker is arranged in the vehicle or in its interior anyway.
- the at least one loudspeaker is designed as a component of an information and entertainment system or an infotainment system and/or a stereo system of the vehicle.
- the system presented can have its own control unit, which is designed to monitor the at least one loudspeaker and thus to control and/or regulate it, with the sound signals being generated and any envisaged modulation of these sound signals being initiated from this own control unit.
- the system also has its own electrical energy supply, for example an energy source, usually a battery or an accumulator, with this energy supply being designed to supply the at least one loudspeaker independently of other energy sources in the vehicle, at least during the call, i.e. when which at least one person articulates their voice, to be supplied with electrical energy and thus to enable the sound signals to be emitted.
- This own energy supply is usually independent of an infrastructure and possibly also of a communication connection with another device external to the vehicle.
- a telephone conversation as a conversation with only one person in the vehicle is secured against eavesdropping.
- the end device can be coupled to the system, usually to the control unit of the system for controlling the at least one loudspeaker, and can receive information about the sound signals in real time from the control unit, for example radio-assisted.
- the vehicle-independent terminal is aware of a time profile of the sound signals, which can possibly result from a modulation.
- the end device can thus take into account the sound signals during the telephone call and compensate accordingly, with the end device microphone used for the telephone call being able to pick up and/or record the person's voice for the telephone call despite the sound signals.
- the conversation intended as a telephone conversation is secured against eavesdropping against any other microphones, in particular against bugs, due to the sound signals.
- the person in the vehicle intentionally speaks into a microphone of a dictaphone and articulates his voice accordingly.
- a respective embodiment of the method and/or the system now makes it possible for people and thus vehicle occupants to be able to converse in the vehicle without their conversation potentially being overheard. It is thus possible to protect a conversation against eavesdropping against a microphone designed as a vehicle microphone and also against a vehicle-external microphone of a third-party device.
- This also applies to microphones from online services, e.g. AlexaTM or SiriTM.
- the at least one loudspeaker emits sound signals, it being possible for a number of sound signals to be emitted at different frequencies above the audible limit frequency at the same time. Sound signals of this type cause noise, which interferes with acoustic reception or signal reception by microphones. It is therefore no longer possible to record a usable voice from a person.
- the system with the at least one loudspeaker for generating the sound signals, the control unit and the energy supply can be integrated into the infrastructure and thus into an architecture of the vehicle. However, the system can also be independent of the vehicle, but also of other third-party devices.
- any espionage, eavesdropping or eavesdropping can also be counteracted by supposedly harmless services such as AlexaTM or SiriTM. This reduces the risk of unwanted eavesdropping on a private conversation.
- the system and the method enable a targeted use of several loudspeakers in the vehicle, which can usually be loudspeakers already installed in the vehicle, for example a high-end sound system.
- these loudspeakers When an embodiment of the method is executed, these loudspeakers generate sound signals that a person cannot hear at various frequencies above the audible cut-off frequency and thus a corresponding noise for active interference with all microphones located in the vehicle. It is also possible for microphones outside the vehicle, which are directed at the vehicle or its interior, to be disturbed by the sound signals from the at least one loudspeaker.
- a function that can be carried out using the method and the system to protect against eavesdropping of the conversation or a corresponding privacy function is activated in an embodiment via an activation switch and/or menu item of an input device in the vehicle correspondingly communicated to the control unit of the system for activation, which is possible regardless of whether the at least one loudspeaker is already integrated into the vehicle or is additionally arranged in the vehicle as part of the system.
- existing loudspeakers and/or additional loudspeakers in the vehicle are used to implement the anti-eavesdropping protection function.
- the high-frequency sound signals above the audible cut-off frequency are emitted locally, using a large number of loudspeakers, e.g. tweeters.
- the loudspeakers are aligned to where mobile devices are likely to be located in the vehicle or in its interior.
- a center armrest, a center console, a side compartment in a door, a cockpit cross member and/or another shelf, receptacle and/or holder for end devices in the vehicle is provided as at least one such location of a mobile end device.
- the loudspeakers can be positioned and thus arranged at different points in the vehicle. This applies, for example, to a headliner, lining of an A, B and/or C pillar, a mirror base, the cockpit cross member, side lining parts and/or seats of the vehicle.
- a usually hardware-supported activation switch for activating the at least one loudspeaker is also connected to the system's own power supply.
- the at least one loudspeaker of the system it is possible for the at least one loudspeaker of the system to be retrofitted in the vehicle or for the vehicle and to be supplied with electrical energy and operated via an electrical socket in the vehicle, for example a cigarette lighter (cigarette lighter slot). . It is therefore possible that the vehicle or its infrastructure does not have at least software-supported access to the at least one loudspeaker. Correspondingly, remote access to the at least one loudspeaker is also not possible in such an embodiment. In such a configuration, the system and thus also the at least one loudspeaker are only connected to the on-board electrical system as the vehicle's energy supply, but are separated from a software-supported infrastructure of the vehicle.
- FIG. 1 shows a schematic representation of an example of a vehicle for which an embodiment of the method according to the invention is carried out with an embodiment of the system according to the invention.
- FIG. 1 shows a schematic representation of a vehicle 2 in whose interior there are two people 10a, 10b.
- FIG. 1 shows the embodiment of the system according to the invention, which here has a first loudspeaker 4, a second loudspeaker 6, a control unit 11 and an electrical energy supply 12 or a corresponding electrical energy source.
- the first loudspeaker 4 is permanently installed in the interior of the vehicle 2, for example as part of an infotainment system, whereas the second loudspeaker 6 is arranged independently of the vehicle 2 and in its interior at least temporarily, but can also be removed again.
- FIG. 1 also shows a schematic representation of a first microphone 14, which is embodied here as part of a mobile terminal device 8, for example a cell phone, that is independent of vehicle 2, and a second microphone 16, which is embodied as part of an infrastructure of vehicle 2 .
- the two people 10a, 10b in the interior of the vehicle 2 want to have a conversation. There is a risk here that their conversation could be overheard through the microphone 14 of the terminal device 8 and/or through the vehicle's internal microphone 16 if it were to be hacked from outside via the Internet.
- the two loudspeakers 4, 6 are controlled by the control unit 11 and are outgoing powered by the power supply 12 with electrical energy.
- the control unit 11 causes the loudspeakers 4 , 6 to generate sound signals, in this case ultrasonic signals, synchronously at different frequencies, the frequencies being above an audible limit frequency for the people 10a , 10b in the vehicle 2 .
- These high-frequency sound signals are sent out or radiated by the loudspeakers 4, 6 into the interior and in particular in the direction of the microphones 14, 16 or their positions, with the high-frequency sound signals generating noise, with an acoustic reception of voices from the persons 10a, 10b and thus the conversation is prevented by the microphones 14, 16, the conversation being correspondingly protected against eavesdropping.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020133648.9A DE102020133648A1 (de) | 2020-12-16 | 2020-12-16 | Verfahren zur Abhörsicherung einer Stimme |
PCT/EP2021/083699 WO2022128461A1 (de) | 2020-12-16 | 2021-12-01 | Verfahren zur abhörsicherung einer stimme |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4226531A1 true EP4226531A1 (de) | 2023-08-16 |
Family
ID=79185729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21835587.3A Pending EP4226531A1 (de) | 2020-12-16 | 2021-12-01 | Verfahren zur abhörsicherung einer stimme |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240056215A1 (de) |
EP (1) | EP4226531A1 (de) |
CN (1) | CN116711000A (de) |
DE (1) | DE102020133648A1 (de) |
WO (1) | WO2022128461A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3377220B2 (ja) | 1991-07-03 | 2003-02-17 | 本田技研工業株式会社 | スピーチプライバシー保護装置 |
IL120355A0 (en) * | 1997-03-02 | 1997-07-13 | Adir Daniel | Voice recording prevention system |
JP4734627B2 (ja) * | 2005-03-22 | 2011-07-27 | 国立大学法人山口大学 | スピーチプライバシー保護装置 |
US9469247B2 (en) | 2013-11-21 | 2016-10-18 | Harman International Industries, Incorporated | Using external sounds to alert vehicle occupants of external events and mask in-car conversations |
WO2016001716A1 (de) | 2014-07-02 | 2016-01-07 | Armoni Hanan | Verfahren und vorrichtung zur blockierung von mikrofonen |
WO2016111727A1 (en) * | 2015-01-06 | 2016-07-14 | Ppip Llc | Privacy and security systems and methods of use |
ES1215484Y (es) * | 2018-05-24 | 2018-10-05 | Velaz Lombide Inigo | Dispositivo para vehículos que impide las grabaciones |
KR102526081B1 (ko) | 2018-07-26 | 2023-04-27 | 현대자동차주식회사 | 차량 및 그 제어방법 |
US10565978B2 (en) | 2018-08-31 | 2020-02-18 | Intel Corporation | Ultrasonic attack prevention for speech enabled devices |
WO2020160683A1 (en) | 2019-02-07 | 2020-08-13 | Thomas Stachura | Privacy device for smart speakers |
-
2020
- 2020-12-16 DE DE102020133648.9A patent/DE102020133648A1/de active Pending
-
2021
- 2021-12-01 US US18/258,094 patent/US20240056215A1/en active Pending
- 2021-12-01 EP EP21835587.3A patent/EP4226531A1/de active Pending
- 2021-12-01 CN CN202180084682.7A patent/CN116711000A/zh active Pending
- 2021-12-01 WO PCT/EP2021/083699 patent/WO2022128461A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
US20240056215A1 (en) | 2024-02-15 |
WO2022128461A1 (de) | 2022-06-23 |
DE102020133648A1 (de) | 2022-06-23 |
CN116711000A (zh) | 2023-09-05 |
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