FEED FORWARD ACTIVE NOISE CANCELLATION SYSTEM
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United States of America Patent
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Mar 27, 2025
app pub date -
Sep 10, 2024
filing date -
Sep 10, 2024
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Abstract
A feedforward active noise cancellation system comprising one or more reference microphones, one or more loudspeakers, one or more error microphones, a first filter, and a second and adaptive filter. The first filter is configured to filter a first input signal to minimize a residual error. The second and adaptive filter comprises a linear predictor of speech. The second and adaptive filter is configured to filter a second input signal based on predicted speech to compensate for a processing delay and a second propagation delay exceeding a first propagation delay.
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