Re: [Discuss-gnuradio] New OpenGL-based FFT, Waterfall, and Scope displays in trunk

[Josh Blum]

The waterfall rate is exactly like the fft rate: a decimation is 
computed so that the actual rate of fft frames per second (from the log 
power fft block) is approximately the given fft rate.

The reason for adding a new preference is that the CPU and graphics 
requirements are different for the waterfall plot, so it should have its 
own separate configurable rate.

-Josh

Eric Blossom wrote:
> On Fri, Aug 22, 2008 at 11:33:18AM -0700, Josh Blum wrote:
> > I think we need another preference parameter for the "waterfall rate". It
> > should not be the same rate as the fft rate.
> >
> > Howabout "waterfall_rate"?
>
> OK.  What are the units, and how would it behave?
>
> Eric