Support Forums › Forums › FIR Designer Support › Auto-IIR Methods 1, 2, and 3? › Reply To: Auto-IIR Methods 1, 2, and 3?

    EA Support
    18 September 2024 at 6:45 pm #911

    Hi Mark,

    We don’t prefer any particular method over the others. The multiple methods are provided in case one method struggles with a particular spectrum.

    Each method various in whether they use the power spectrum or log (dB) spectrum, and how they place each filter’s centre frequency.

    We do recommend smoothing to 3rd or 6th octave (in the Auto IIR window) before it places filters, otherwise the calculation will use way too many filters.

    Regards,
    EA Support