ramonauble / dsp Goto Github PK

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explorations
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              DSP tests & studies
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• mv_avg - moving average filter by convolution
  • this program takes a mono 8bit wav file of arbitary length as input
  • the output samples are calculated by convolving the input signal
    with a 45 point impulse response equal to 1/45 at all points
  • applies the algorithm to the entire input waveform, storing the filtered
    output as a new wav file in the same directory
  
• mv_avg_rec - moving average filter by recursive convolution
  • this program takes a mono 8bit wav file of arbitary length as input
  • by recursion, the output samples are calculated from prior outputs,
    averting the need for M - 2 additions every output sample
    ♪ still requires one multiplication
  • applies the algorithm to the entire input waveform, storing the filtered
    output as a new wav file in the same directory