All-pass network system for colorless decorrelation with constraints
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United States of America Patent
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Aug 20, 2024
Grant Date -
Dec 8, 2022
app pub date -
Aug 17, 2022
filing date -
Aug 17, 2022
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Abstract
A system includes one or more computing devices that decorrelates a monaural channel into a plurality of output channels. A computing device determines a target amplitude response defining one or more constraints on a summation of the plurality of channels. The target amplitude response is defined by relationships between amplitude values of the summation and frequency values of the summation. The computing device determines a transfer function of a single-input, multi-output all pass filter based on the target amplitude response and determines coefficients of the allpass filter based on the transfer function. The computing devices processes the monaural channel with the coefficients of the allpass filter to generate the plurality of channels.
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