Hearing device
The present disclosure relates to a hearing device comprising a first radar sensor configured for obtaining first radar data indicative of a difference in the orientation of a head of the user and a further body part of the user. A processing unit of the hearing device is configured to receive the first radar data from the first radar sensor and determine, based on the first radar data, a first relative orientation, wherein the first relative orientation is a difference in the orientation of the head of the user and the further body part of the user.
1 . A hearing device, comprising:
a first housing for being worn at a first ear of a user, and
a processing unit configured to control functionality of the hearing device,
a first radar sensor configured to obtain first radar data indicative of a difference in the orientation of a head of the user and a further body part of the user,
an orientation sensor configured to obtain orientation data regarding a head orientation of the user, and wherein the processing unit is further configured to:
receive the first radar data from the first radar sensor,
receive the orientation data from the orientation sensor,
determine, based on the orientation data, the head orientation of the user,
output the head orientation of the user,
determine, by inputting the first radar data into an input layer of an off-line trained neural network, a first relative orientation,
wherein the first relative orientation is a difference in the orientation of the head of the user and the further body part of the user,
output the first relative orientation, and
based on the first relative orientation, calibrate the orientation sensor periodically by removing accumulated integration errors setting the head orientation from the orientation data equal to the first relative orientation determined from the first radar data.
2 . A hearing device according to claim 1 , wherein the orientation sensor is one or more of a gyroscope, an accelerometer, a magnetometer, or an inertial measurement unit, IMU.
3 . A hearing device according to claim 1 , wherein the first radar sensor is configured to emit a radio signal at a frequency of 55 GHz-65 GHz.
4 . A hearing device according to claim 1 , wherein the first radar sensor comprises a phased array.
5 . A hearing device according to claim 4 , wherein the phased array comprises at least four antennas.
6 . A hearing device according to claim 4 , wherein the processing unit is further configured to:
control a phase relation of antennas within the phased array to perform a scan of a user wearing the hearing device.
7 . A hearing device according to claim 1 , wherein the processing unit is further configured to:
receive an audio signal, and
process the received audio signal based on the determined first relative orientation.
8 . A hearing device according to claim 1 , wherein the hearing device is a headset, or a pair of earbuds.
9 . A hearing device according to claim 1 , wherein the hearing device further comprises:
a second housing for being worn at a second ear of a user; and
a second radar sensor configured to obtain second radar data indicative of the orientation of a head of the user relative to a further body part of the user, and
wherein the processing unit is further configured to:
receive the second radar data from the second radar sensor, and
determine, based on the received first radar data and the received second radar data, the orientation of a head of the user relative to a further body part of the user.
10 . A hearing device according to claim 1 , wherein the first radar sensor is configured to emit a radio signal at a frequency of 40 GHz-120 GHz.
11 . A hearing device according to claim 1 , wherein the first radar sensor is configured to emit a radio signal at a frequency of 50 GHz-100 GHz.
12 . A hearing system, comprising:
a hearing device, comprising:
a first housing for being worn at a first ear of a user, and
a processing unit configured to control functionality of the hearing device;
a first radar sensor configured to obtain first radar data indicative of a difference in the orientation of a head of the user and a further body part of the user;
an orientation sensor configured to obtain orientation data regarding a head orientation of the user;
wherein the processing unit is further configured to:
receive the first radar data from the first radar sensor,
receive the orientation data from the orientation sensor,
output the head orientation of the user,
determine, by inputting the first radar data into an input layer of an off-line trained neural network, a first relative orientation,
wherein the first relative orientation is a difference in the orientation of the head of the user and the further body part of the user, output the first relative orientation, and
based on the first relative orientation, calibrate the orientation sensor periodically by removing accumulated integration errors and setting the head orientation from the orientation data equal to the first relative orientation determined from the first radar data; and
an external processing unit configured to:
receive an audio signal,
receive the first relative orientation from the processing unit,
process the received audio signal based on the received first relative orientation, and
transmit the processed audio signal to the processing unit.
13 . A hearing system according to claim 12 , wherein the external processing unit is further configured to:
based on the first relative orientation, render the received audio signal into a 3D audio signal.
14 . A hearing system according to claim 12 , wherein the hearing device comprises an orientation sensor configured for obtaining head orientation data regarding a head orientation of the user, wherein the external processing unit is further configured to:
receive the head orientation data from the hearing device,
determine a head orientation,
based on the head orientation and the first relative orientation, determine a head related transfer function, HRTF, and
process the received audio signal based on the determined HRTF.
15 . A method for determining an orientation of a head of the user relative to a further body part of the user, the method comprises the steps of:
receiving first radar data from a first radar sensor connected to a first housing worn at a first ear of the user, wherein the first radar data is indicative of an orientation of a head of the user relative to a further body part of the user,
determining, by inputting the first radar data into an input layer of an off-line trained neural network, an orientation of a head of the user relative to a further body part of the user,
receiving an audio signal,
processing the received audio signal based on the determined orientation and
calibrating an orientation sensor, based on the determined orientation periodically by removing accumulated integration errors and resetting the orientation sensor to output a zero measurement for the orientation of the head of the user.