Any Whittaker–Shannon Interpolation module?

[Nowhk]

Hi there,

I've a collection of 100 samples that describe a discrete signal (from 1hz to 40hz), and I'd like to plot a graph that show the analog/continuos-bandlimited signal after an ideal DAC.

Is there any Whittaker–Shannon Interpolation module out of the box that will already draw it?
Or somethings made by community in these years that emulate this?

Thanks

[martinvicanek]

Here is one for sample size power of two.

[Nowhk]

Here is one for sample size power of two.

Thanks for the help and the fancy module Tried to edit the input signal with a sin. But it messes the graph, not sure why:

sine.png (41.57 KiB) Viewed 8481 times

Here's the DSP code:

Code: Select all

streamin sr;
streamin freq;
streamout x;
float i=0;
x = sin1(i/sr);
i = i + sr/freq;


Schematic:

SincInterpolation_Sine.fsm

(10.04 KiB) Downloaded 798 times

Sometimes, it draw correctly Where's the bug? Thanks

[Nowhk]

I think I've got it! I just need to retrigger the [F] SyncInterpolation module, so it propagates the changes

Thanks boss!!!!