if you used a value smaller than 1 it will be a decimator
— On Thu, 7/23/09, Karthik [email protected] wrote:
From: Karthik [email protected]
Subject: [Discuss-gnuradio] gr_fractional_interpolator interpolation
ratio
To: “GNURadio D.ion List” [email protected]
Date: Thursday, July 23, 2009, 4:22 AM
This might be a silly question. But here goes …
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?
Karthik
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