Filter Design Toolbox

numberofsections

Return the number of sections in a quantized filter

Syntax

• numberofsections(hq)
  

Description

numberofsections(hq) returns the number of sections in a quantized filter. The filter reference coefficients determine the number of sections.

Examples

Create a double-precision filter using the Butterworth method. Convert the filter to a quantized filter in second-order section form, then use the function numberofsections to determine the number of sections that make up the filter.

• [b,a] = butter(7,.5);
  Hq = sos(qfilt('df2t',{b,a}));
  numberofsections(Hq)
  

See Also
get, qfilt, set, sos

num2int

nunderflows