Apparatus for determining spatial positions of multiple audio sources

US11921198B2 · kind B2 · utility

Assignees

• Huawei Technologies Co., Ltd. · CN
• FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG · DE

Inventors

• Mohammad Taghizadeh · Munich, DE
• Michael Günther · Koblenzer Straße, DE
• Andreas Brendel · Erlangen, DE
• Walter Kellermann · Eckental, DE

Key dates

• Filing date: Jan 24, 2022
• Grant date: Mar 5, 2024
• Expiry date: Jun 7, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04R2430/23
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus determines a spatial position of an audio source in multi moving audio sources scenarios. The apparatus receives audio signal versions as local sound waves. The apparatus determines first and second probabilities for a direction of arrival of the audio signal version based on the audio signal versions received within a first time interval; determines third and fourth probabilities for the direction of arrival of the audio signal version based on the audio signal versions received within a second time interval; determines a first probability difference between the first and third probabilities; determines a second probability difference between the second and fourth probabilities; combines the third probability and the first probability difference to obtain an updated third probability; combines the fourth probability with the second probability difference to obtain an updated fourth probability; and determines the spatial position based on the updated third and fourth probabilities.