Patent ID: 6654471
Filing Date: 2003-11-25
Classification: G11B

Abstract:
Recording device for suppressing pulsed interference in analogue audio samples and digitally recording these audio signals, comprising:an analogue/digital converter for forming sample values from the analog audio signals; an apparatus to which the sample values for suppressing pulsed interference are fed, said apparatus comprising means for receiving samples of the audio signal, means for adaptively filtering said received samples, means for deriving an error signal given by the difference between said received samples and said adaptively filtered samples, means for measuring the power of said error signal, means for calculating a threshold value using said error signal power, means for designating a sample as distorted if the error signal exceeds said threshold value, and means for replacing said distorted sample by the output signal of said adaptive filtering; and recording equipment for recording on a digital data carrier, to which equipment the output signal of said apparatus is fed directly or after further processing.