Spatial audio filtering within spatial audio capture
A method of spatial audio filtering comprising determining 1st and 2nd sound source direction and energy parameters of an audio signal, obtaining a region defining a spatial filter, and generating a filter to be applied to the audio signals based on the determined parameters. The filter may be gener...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A method of spatial audio filtering comprising determining 1st and 2nd sound source direction and energy parameters of an audio signal, obtaining a region defining a spatial filter, and generating a filter to be applied to the audio signals based on the determined parameters. The filter may be generated based on the direction parameter being inside the filter range, outside of the filter range, or within an edge zone of the range. Combined gain values may be calculated and combined based on the respective 1st and 2nd direction parameters. Temporal filter gain values may be calculated based on the average of the energy parameters and the number of times the direction parameter falls within the filter region during a certain time period. Average frame gain values may be calculated based on the average frame energy and the number of times the direction parameter falls within the filter region during a certain time period. The combined, temporal and average frame gain values may be summed to generate the final filter values. |
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