Apparatus, method and computer program for localizing a sound source
AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsFrank Klefenz, Thomas Sporer
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Abstract
An apparatus for localizing a sound source includes at least two rotatably arranged microphones, a drive formed to set the microphones into rotation, and an evaluator. The evaluator is formed to receive microphone signals of the at least two microphones, while the at least two microphones are moving, and to obtain information on a direction from which sound arrives from the sound source or information on a position of the sound source, using the microphone signals obtained during the movement of the microphones.
Claims38
An apparatus for localizing a sound source, comprising:
- at least two rotatably arranged microphones;
- a drive formed to set the microphones into rotation;
- and
- an evaluator formed to receive microphone signals of at least two microphones, while the at least two microphones are moving, and
- to acquire information on a direction from which sound from the sound source arrives or information on a position of the sound source, using the microphone signals acquired during the movement of the microphones,
- wherein the evaluator is formed to evaluate a Doppler frequency shift between a first microphone signal from a first one of the microphones and a second microphone signal from a second one of the microphones to determine information on the direction from which sound from the sound source arrives or information on the position of the sound source.
A method of localizing a sound source, comprising:
- acquiring microphone signals from at least two microphones, while the at least two microphones perform rotation;
- and
- determining information on a direction from which sound arrives from the sound source or information on a position of the sound source, using the microphone signals acquired during the movement of the microphones,
- wherein a Doppler frequency shift between a first microphone signal from a first one of the microphones and a second microphone signal from a second one of the microphones is evaluated to determine information on the direction from which sound from the sound source arrives or information on the position of the sound source.
A tangible computer readable medium having a computer program for performing, when the computer program is executed on a computer, a method of localizing a sound source, comprising:
- acquiring microphone signals from at least two microphones, while the at least two microphones perform rotation;
- and determining information on a direction from which sound arrives from the sound source or information on a position of the sound source, using the microphone signals acquired during the movement of the microphones, wherein a Doppler frequency shift between a first microphone signal from a first one of the microphones and a second microphone signal from a second one of the microphones is evaluated to determine information on the direction from which sound from the sound source arrives or information on the position of the sound source.
Dependencies are inferred from the claim text.