Signal processing circuit, method of processing signal, audio signal processing circuit, method of processing audio signal, imaging apparatus, method of processing audio signal with imaging apparatus, recording apparatus, method of recording, playing apparatus, and method of playing

摘要

A signal processing circuit includes a delaying unit that is configured to carry out delay processing on the basis of periodicity information synchronized with the periodicity of a periodic noise included in an input signal and a filter unit that is configured to receive the input signal and has a notch characteristic at a frequency f. The frequency f satisfies f=N/T, where N represents an integer equal to or greater than one and T represents a delaying time applied by the delaying unit.