Yes, the relative rate is constant.
It was my understanding that the sync_interpolator class
interpolates zeros into the data stream, requiring you to
low-pass filter the results to remove the introduced
high-frequency ailasing. This wasn't suitable my use, as
I'm trying to resample a digital bitstream, and the
interpolated values need to duplicate the previous
input value.
Is my understanding wrong?
@(^.^)@ Ed
Eric Blossom wrote:
On Mon, Nov 19, 2007 at 10:43:32AM -0500, Ed Criscuolo wrote:
I'm having difficulty with a block I'm writing that I've been
unable to resolve, and I hope somebody out there can help.
The block's input and output run at different rates, so I
inherited from gr_block, as in the howto-write-a-block-3.1.1
first example. In addition, I supplied a forecast method
that returns the number of input items required for a given
number of output items, and I used the
"set_relative_rate" method in the constructor to set
the relative rate to output_rate/input_rate.
BTW, is the input rate to output rate relationship constant?
E.g., 1:N or N:1. If so, you can use the gr_sync_interpolator or
gr_sync_decimator base class. Less likelihood of trouble with those ;)
Eric
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