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MULTI-RATE FILTER SYSTEM

  • US 20150010170A1
  • Filed: 01/09/2013
  • Published: 01/08/2015
  • Est. Priority Date: 01/10/2012
  • Status: Abandoned Application
First Claim
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1. A multi-rate filter system comprising:

  • an input channel configured to receive an input signal;

    an output channel configured to output a filtered signal;

    a cascade of multi-rate filter blocks coupled between the input channel and the output channel, at least one of the multi-rate filter blocks comprising;

    a bandselector comprising a bandselector input, a highpass bandselector output, a lowpass bandselector output connected to a subsequent multi-rate filter block, and a downsampler connected between the bandselector input and the lowpass bandselector output;

    a signal processing block coupled to the highpass bandselector output, the signal processing block comprising a linear filter component; and

    a bandcombiner connected to the signal processing block, the bandcombiner comprising two bandcombiner inputs, a bandcombiner output, and an upsampler, the first bandcombiner input connected to the signal processing block, the second bandcombiner input connected to a subsequent multi-rate filter block, and the bandcombiner output connected to a prior multi-rate filter block, the upsampler connected between the bandcombiner inputs and the bandcombiner output.

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