Pole/zero models can be converted to IIR filters using the bilinear transform. The result of the conversion is an miir object. To convert a model, you call the constructor of the miir class with a plist input:
>> filt = miir(plist('pzmodel', pzm))
If no sample rate is specified, then the conversion is done for a sample rate equal to 8 times the highest pole or zero frequency. You can set the sample rate by specifying it in the parameter list:
>> filt = miir(plist('pzmodel', pzm, 'fs', 1000))
For more information of IIR filters in LTPDA, see IIR Filters.