Audio processing device and method for acoustic angle of arrival detection using audio signals of a virtual rotating microphone
AssigneeIntel Corporation
InventorsJulio Cesar Zamora Esquivel, Hector Cordourier Maruri, Jose Rodrigo Camacho Perez, Paulo Lopez Meyer, Jose Torres Ortega, Alejandro Ibarra Von Borstel
Life of this patent
Estimating the term…
Abstract
An audio processing device and method uses audio signals from a virtual rotating microphone for acoustic angle of arrival detection using a doppler effect technique.
Claims25
A computer-implemented method of acoustic angle of arrival detection comprising:
- receiving audio signals from a fixed circular array of microphones and based on audio received by the circular array;
- and
- determining an acoustic angle of arrival of the audio relative to the circular array comprising generating at least two frequency-related values each associated with microphones on an opposite side of a potential angle of arrival direction, and comparing the frequency-related values, wherein the generating comprises using signs of the audio signals without using magnitudes of the audio signals in computations to generate and compare the frequency-related values.
A computer-implemented system of acoustic angle of arrival detection, comprising:
- memory storing samples of audio signals received from a circular array of fixed microphones and based on audio received by the circular array;
- and
- processor circuitry forming at least one processor communicatively connected to the memory, the at least one processor being arranged to operate by:
- determining an acoustic angle of arrival of the audio relative to the circular array comprising generating at least two frequency-related values each associated with microphones on an opposite side of a potential angle of arrival direction, and comparing the frequency related values, wherein the generating and comparing comprises using signs of the audio signals without using magnitudes of the audio signals in computations to generate and compare the frequency-related values.
At least one non-transitory computer readable medium comprising a plurality of instructions that in response to being executed on a computing device, causes the computing device to operate by:
- receiving audio signals from a fixed circular array of microphones and based on audio received by the circular array;
- and
- determining an acoustic angle of arrival of the audio relative to the circular array comprising generating at least two frequency-related values each associated with microphones on an opposite side of a potential angle of arrival direction, and comparing the frequency-related values, wherein the generating comprises using signs of the audio signals without using magnitudes of the audio signals in computations to generate and compare the frequency-related values.
Dependencies are inferred from the claim text.