How to Fix this Error!

wo = 60/(300/2); bw = wo/35;

[b,a] = iirnotch(wo,bw);

fvtool(b,a);

Undefined function 'iirnotch' for input arguments of type 'double'.

[Andrei Bobrov]

You have DSP System Toolbox?

iirnotch function from DSP System Toolbox.

Answer 1

[Craig Cowled]

Send this to Matlab Support. Obviously their help file has the wrong code.