US 12,067,988 B2
Detection device for a voice signal of a person, and method for detecting a voice signal of a person using such a detection device
Markus Klug, Ingolstadt (DE); Tobias Moll, Ingolstadt (DE); and Johannes Scheuchenpflug, Baar-Ebenhausen (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Appl. No. 17/608,386
Filed by AUDI AG, Ingolstadt (DE)
PCT Filed Apr. 30, 2020, PCT No. PCT/EP2020/062114
§ 371(c)(1), (2) Date Nov. 2, 2021,
PCT Pub. No. WO2020/225124, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. DE10 2019 206 371.3 (DE), filed on May 3, 2019.
Prior Publication US 2022/0208193 A1, Jun. 30, 2022
Int. Cl. G10L 15/24 (2013.01); G01S 7/4865 (2020.01); G01S 17/931 (2020.01); G02B 6/42 (2006.01); G06F 18/22 (2023.01); G10L 15/22 (2006.01); G10L 25/51 (2013.01)
CPC G10L 15/24 (2013.01) [G01S 7/4865 (2013.01); G01S 17/931 (2020.01); G02B 6/4206 (2013.01); G06F 18/22 (2023.01); G10L 15/22 (2013.01); G10L 25/51 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A motor vehicle, comprising:
a passenger compartment; and
a capture apparatus configured to provide a speech signal of a person, the capture apparatus including:
a light source configured to emit pulsed light,
a first planar carrier medium configured as a light guide on which an input coupling region and an output coupling region are directly disposed, wherein
the input coupling region is configured as a holographic element with a first deflection structure configured to input light which is emitted by the light source and reflected at the person, into the first planar carrier medium,
the first planar carrier medium is configured to transmit the light input into the first planar carrier medium from the input coupling region, by internal reflection, to the output coupling region, and
the output coupling region is configured as a holographic element with a second deflection structure configured to output the light transmitted to the output coupling region via the first planar carrier medium, which is incident on the second deflection structure, out of the first planar carrier medium,
a sensor device configured to capture the light output out of the first planar carrier medium by the output coupling region and to provide the light in a form of sensor data that describe a time of flight of the pulsed light emitted by the light source and reflected at the person,
an evaluation device, including a conversion unit and an interpretation unit, configured to convert the sensor data into vibration data using the conversion unit and to provide the speech signal of the person using the interpretation unit which is configured to evaluate the vibration data by applying a speech interpretation criterion, wherein the speech interpretation criterion includes respective vibration data, which are correlated to respective speech signal components which make up the speech signal of the person, and
a second planar carrier medium on which a light input coupling region and a light output coupling region are disposed, wherein
the light input coupling region is configured as a holographic element with a third deflection structure configured to input light, which is incident on the third deflection structure from the light source, into the second planar carrier medium,
the second planar carrier medium is configured to transmit the light input into the second planar carrier medium from the light input coupling region, by internal reflection, to the light output coupling region, and
the light output coupling region is configured as a holographic element with a fourth deflection structure configured to output the light transmitted to the light output coupling region via the second planar carrier medium, which is incident on the fourth deflection structure, out of the second carrier medium such that the light is emitted in a direction of the person,
wherein
the second planar carrier medium is formed separately from the first planar carrier medium and is formed as a transparent film, wherein the second planar carrier medium is disposed on a windshield of the motor vehicle and the first planar carrier medium is formed as a transparent film and is disposed on the windshield directly next to the second planar carrier medium so that the input coupling region partly covers the light output coupling region, or
the first planar carrier medium and the second planar carrier medium are formed as a common main carrier medium, on which the input coupling region, the output coupling region, the light input coupling region, and the light output coupling region are disposed, the first planar carrier medium being configured as a transparent plate, film, or lacquer, and the common main carrier medium being disposed at one of the following positions:
in a screen of a display apparatus in the passenger compartment,
in a rearview mirror of the motor vehicle,
in a combination instrument of the motor vehicle,
in the windshield,
in a side window of the motor vehicle, or
between two A pillars of the motor vehicle.