Re: [Discuss-gnuradio] USRP2 Filtering/Decimation Question

[Matt Ettus]

Bruce McGuffin wrote:
> Hi
>
> When I specify a particular receiver decimation rate
> for the USRP2, the task of decimating is presumably
> split up between the CIC and two half-band filters.
> My question is how is the task split up,
> and where in the code does this happen?

If the requested decimation rate is a multiple of four, we use the two 
halfband filters, and the rest is CIC.  If it is only a multiple of two, 
we use one halfband filter and the rest in CIC.  If it is an odd number, 
we use only CIC.

Matt