The present disclosure relates to a noise reduction device, a noise reduction method, and a program capable of reducing noise in a more stable and effective manner. Signal processing is performed to generate a reference signal representing a waveform of noise on the basis of an estimation value indicating estimation of an acoustic characteristic in a route from each of a predetermined number of speakers to a microphone. Moreover, signal processing is performed for an error signal representing a waveform of an error measured by the microphone in accordance with an amplitude-frequency characteristic obtained from the corresponding one of the acoustic characteristics. Then, a filter coefficient with which the error signal becomes zero is calculated under adaptive algorithm with reference to the reference signal. The reference signal is filtered by using the filter coefficient to obtain a control signal. The control signal is supplied to the corresponding one of the predetermined number of output units. The present technology is applicable to a noise cancelling system equipped in a closed space such as an interior of a vehicle, for example.
NOISE SUPPRESSION DEVICE, NOISE SUPPRESSION METHOD, AND PROGRAM
GERÄUSCHDÄMPFUNGSVORRICHTUNG, GERÄUSCHDÄMPFUNGSVERFAHREN UND PROGRAMM
DISPOSITIF DE SUPPRESSION DE BRUIT, PROCÉDÉ DE SUPPRESSION DE BRUIT, ET PROGRAMME
2020-12-09
Patent
Electronic Resource
English
NOISE SUPPRESSION DEVICE, NOISE SUPPRESSION METHOD, AND PROGRAM
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