An active noise reduction device is used with a secondary noise source that generates a secondary noise and an error signal source that outputs an error signal corresponding to a residual sound caused by interference between the secondary noise and a noise. A µ-adjustment unit calculates a step-size parameter for updating a filter coefficient of an adaptive filter by multiplying a standard step-size parameter by a ratio of a standard representative input value corresponding to amplitude of a signal to a representative input value corresponding to the amplitude of the signal.
ACTIVE NOISE REDUCTION DEVICE AND ACTIVE NOISE REDUCTION METHOD
VORRICHTUNG FÜR AKTIVE RAUSCHUNTERDRÜCKUNG UND VERFAHREN FÜR AKTIVE RAUSCHUNTERDRÜCKUNG
DISPOSITIF DE RÉDUCTION ACTIVE DU BRUIT ET PROCÉDÉ DE RÉDUCTION ACTIVE DU BRUIT
2020-02-19
Patent
Electronic Resource
English
IPC: | G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H03H IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS , Scheinwiderstandsnetzwerke, z.B. Resonanzkreise |
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