Noise Reduction Based on Dynamic Neural Networks
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United States of America Patent
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Issued Date -
Jun 20, 2024
app pub date -
Nov 19, 2021
filing date -
Nov 19, 2021
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Abstract
A hybrid noise-reducer provides an output audio signal by carrying out noise reduction on an input audio signal over a desired range of frequencies. The desired range of frequencies consists of the union of a base range of frequencies and a remainder range of frequencies. The noise reducer includes first and second noise-reduction paths of different types. The first noise-reduction path relies on a dynamic neural network that has been trained using the base range of frequencies. The second noise-reduction path relies on a noise estimation module that uses an estimate of signal-to-noise ratio estimate to identify noise within the remainder range.
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