Re: [Discuss-gnuradio] IIR Filter taps

[Ed Criscuolo]

On 11/19/12 10:11 AM, Tom Rondeau wrote:

> used? Should be change the way gr_iif_filter takes in the taps, or
> should we change how gr_filter_design produces them?
>
> Thanks for the feedback!
>
> Tom

I agree that changing the way gr_iir_filter takes in the taps could
be disruptive, unless backward compatibility is maintained. Some of
the group are using GnuRadio for operational systems.

Here's two more suggestions for solutions:

1.  Add an optional flag parameter to the constructor, with values
    of "Old_API" and "New_API",  with the default set to "Old_API".
    This flag would control how gr_iif_filter interprets the taps.
    It could be maintained this way for some time, with the Old_API
    being deprecated, and eventually change the default to
    New_API, or even make the default a cmake option.

2. Create two subclasses of filter taps that are identical in
   format, and use C++ overloading to determine which constructor
   or set method to use.

@(^.^)@  Ed