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US 12,089,013 B2Granted
Audio processing device having microphones arranged with different spacing and diameters
AssigneeSony Group Corporation
InventorsYohei Sakuraba, Yuuji Hirasawa, Eiji Chihara, Atsushi Masuda, Junsei Abe
Life of this patent
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Abstract
To provide an audio processing device including a configuration in which a different microphone is used for generation of directivity depending on a frequency band.
Claims14
An audio processing device, comprising:
- a plurality of microphones arranged in a shape other than a line;
- a plurality of directivity generation circuits, each of which is configured to generate a plurality of audio signals having a predetermined directivity by using a combination of a plurality of the microphones for generation of the directivity and using a plurality of the combinations of the microphones with spaces therebetween that are different from each other,
- wherein a first directivity generation circuit, of the plurality of directivity generation circuits, is configured to generate a unidirectional left side audio signal with a directivity principle axis aligned to the left using a first plurality of the microphones, and a second directivity generation circuit, of the plurality of directivity generation circuits, is configured to generate a unidirectional right side audio signal with a directivity principle axis aligned to the right using a second plurality of microphones different from the first plurality of microphones,
- wherein at least one of the plurality of microphones is in both the first plurality of microphones and the second plurality of microphones.
1 more element
An audio processing device, comprising:
- a plurality of microphones having different diameters and configured to generate a corresponding plurality of audio signals having a predetermined directivity, wherein the plurality of microphones differ from each other in frequency response and noise performance and are unidirectional with each other;
- a high-pass filter configured to perform filtering processing on a first audio signal generated by a first microphone, of the plurality of microphones, having a first diameter;
- a low-pass filter configured to perform filtering processing on a second audio signal generated by a second microphone, of the plurality of microphones, having a second diameter greater than the first diameter;
- and
- a synthesis circuit configured to perform synthesis from an output of the high-pass filter and an output of the low-pass filter.
2 more elements
An audio processing device, comprising:
- a plurality of microphones;
- a plurality of directivity generation circuits, each of which is configured to generate a plurality of audio signals having a predetermined directivity by using a combination of a plurality of the microphones for generation of the directivity and using a plurality of the combinations of the microphones with spaces therebetween that are different from each other;
- and
- a structure configured to adjust spaces between a plurality of the microphones used for generation of the directivity.
1 more element
Dependencies are inferred from the claim text.