Digital signal recording apparatus and digital signal processing apparatus

Digital signal recording apparatus and digital signal processing apparatus

  • CN 1,164,086 A
  • Filed: 11/30/1996
  • Published: 11/05/1997
  • Est. Priority Date: 11/30/1995
  • Status: Abandoned Application
First Claim
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1. digital signal processing appts, the noise in order to suppress to carry out the digital signal that digitizing obtains by at least 1 comprises:

  • Noise suppression mode signal generating means is in order to produce predetermined noise suppression pattern;

    Switching device is in order to still selectively to appoint with the digital signal of at least 1 bit digitalization and to press down between the noise suppression mode signal that the mode signal generating means produces and transfer;

    WithUnlimited response filter converts simulating signal in order to the output with described switching device;

    It is characterized in that, carried out following improvement;

    The spectral characteristic of described predetermined noise suppression mode signal is selected to such an extent that make its blanketing frequency with described unlimited response filter consistent.

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