Is there an error in the documentation of the IFIR function within Filter Design Toolbox 4.0 (R2006b) ?
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If I perform the following steps:
Open the fdatool
Change 'Design Method' to 'Interpolated FIR' and click 'Design Filter'.
The resulting filter is linear phase, not minimum phase.
The documentation of the IFIR function states:
" In this syntax, ifir only creates minimum phase filters. "
Accepted Answer
MathWorks Support Team
on 27 Jun 2009
This bug has been fixed in Release 2007b (R2007b). For previous product releases, read below for any possible workarounds:
There is an error in the documentation of the IFIR function within Filter Design Toolbox 4.0 (R2006b).
The documentation should be read:
ifir only creates linear phase filters.
instead of:
ifir only creates minimum phase filters.
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