Re: [Discuss-gnuradio] gr_fractional_interpolator interpolation ratio

[Johnathan Corgan]

On Wed, 2009-07-22 at 18:22 -0700, Karthik wrote:

> In gr_fractional_interpolator_ff I observed that to make the filter
> interpolate between input values you have to set the interpolation
> ratio < 1 and this is because the block has this line in the code
> "set_relative_rate (1.0 / interp_ratio)". I always thought for a block
> named interpolator a value of interpolation_ratio > 1 would be
> understood as increasing the sampling rate by that factor. Is this not
> correct?

No, you're right.  It's a historical feature frozen in to place by lots
of code using that block constructor.

There's some new fractional interpolator code on the way and it will be
named right this time :)

Johnathan