Ambisonic signal generation for microphone arrays
AssigneeQUALCOMM Incorporated
InventorsS M Akramus Salehin, Ricardo De Jesus Bernal Castillo, Michael Ericson, Ferdinando Olivieri, Nils Gunther Peters, Dipanjan Sen
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Abstract
A method includes performing, at a processor, signal processing operations on signals captured by each microphone in a microphone array. The method also includes performing a first directivity adjustment by applying a first set of multiplicative factors to the signals to generate a first set of ambisonic signals. The first set of multiplicative factors is determined based on a position of each microphone in the microphone array, an orientation of each microphone in the microphone array, or both.
Claims30
An apparatus comprising:
- a processor configured to:
- perform signal processing operations on signals captured by each microphone in a microphone array;
- and
- perform a first directivity adjustment by applying a first set of multiplicative factors to the signals to generate a first set of ambisonic signals, the first set of multiplicative factors determined based on a position of each microphone in the microphone array, an orientation of each microphone in the microphone array, or both.
A method comprising:
- performing, at a processor, signal processing operations on signals captured by each microphone in a microphone array;
- and
- performing a first directivity adjustment by applying a first set of multiplicative factors to the signals to generate a first set of ambisonic signals, the first set of multiplicative factors determined based on a position of each microphone in the microphone array, an orientation of each microphone in the microphone array, or both.
A non-transitory computer-readable medium comprising instructions that, when executed by a processor, cause the processor to perform operations comprising:
- performing signal processing operations on signals captured by each microphone in a microphone array;
- and
- performing a first directivity adjustment by applying a first set of multiplicative factors to the signals to generate a first set of ambisonic signals, the first set of multiplicative factors determined based on a position of each microphone in the microphone array, an orientation of each microphone in the microphone array, or both.
An apparatus comprising:
- means for performing signal processing operations on signals captured by each microphone in a microphone array;
- and
- means for performing a first directivity adjustment by applying a first set of multiplicative factors to the signals to generate a first set of ambisonic signals, the first set of multiplicative factors determined based on a position of each microphone in the microphone array, an orientation of each microphone in the microphone array, or both.
Dependencies are inferred from the claim text.