Patent ID: 11921198
Assignee: FRIEDRICH-ALEXANDER-UNIVERSITäT ERLANGEN-NüRNBERG
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 15:
16. A mobile device for telecommunications services, the mobile device comprising:
an apparatus configured to determine a certain spatial position of an audio source, the audio source being configured to transmit an audio signal, the apparatus comprising:
a plurality of audio signal inputs, wherein each of the audio signal input is configured to receive an audio signal version of the transmitted audio signal; and
processing circuitry which is configured to:
determine a first probability for a direction of arrival of the audio signal version and a second probability for the direction of arrival of the audio signal version upon the basis of the plurality of the audio signal versions received within a first time interval, the direction of arrival being associated with a first spatial position relative to the apparatus;
determine a third probability for the direction of arrival of the audio signal version and a fourth probability for the direction of arrival of the audio signal version upon the basis of the plurality of the audio signal versions received within a second time interval, the direction of arrival being associated with a second spatial position;
determine a first probability difference between the first probability and the third probability;
determine a second probability difference between the second probability and the fourth probability;
combine the third probability and the first probability difference to obtain an updated third probability;
combine the fourth probability with the second difference to obtain an updated fourth probability; and
determine the certain spatial position upon the basis of the updated third probability and the updated fourth probability; and
a microphone array configured to capture audio signals and connected to the plurality of signal inputs to provide the audio signals to the processing circuitry.