Patent · US Active

Device and method for estimating direction of arrival

US11567162B2 · kind B2 · utility

2Cited by

0References

18Claims

0Family size

Assignee

Huawei Technologies Co., Ltd. · CN

Inventors

Kainan Chen · Munich, DE
Jürgen Geiger · Munich, DE
Mohammad Taghizadeh · Munich, DE
Peter Grosche · Munich, DE

Key dates

Filing date	Oct 25, 2019
Grant date	Jan 31, 2023
Priority date	—
Expiry date	Apr 22, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04R3/005
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device for estimating Direction of Arrival (DOA) of sound from Q≥1 sound sources is provided. The device is configured to obtain a phase difference matrix, which includes measured phase difference values, each of the measured phase difference values being a measured value of a phase difference between two microphone units for a frequency bin in a range of frequencies of the sound. The device is further configured to generate a replicated phase difference matrix by replicating the measured phase difference values to other potential sinusoidal periods, calculate a DOA value for each phase difference value in the replicated phase difference matrix, and determine, as Q DOA results, the Q most prominent peak values in a histogram generated based on the calculated DOA values.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.