Integrate block functionality

2019-12-20 Thread Joe K
Hi all, Maybe this is a dumb question, but I didn't find any discussion on the web or in the mailing list archives. The integrate block (e.g., blocks.integrate_ff) doesn't seem to operate as I'd expect. What I'm looking for is a block that integrates from time 0 with no decimation. So, an input

Re: Integrate block functionality

2019-12-20 Thread Marcus D. Leech
On 12/20/2019 10:39 AM, Joe K wrote: Hi all, Maybe this is a dumb question, but I didn't find any discussion on the web or in the mailing list archives. The integrate block (e.g., blocks.integrate_ff) doesn't seem to operate as I'd expect. What I'm looking for is a block that integrates fro

Re: Integrate block functionality

2019-12-20 Thread Joe K
Yeah, I understand it's not a practical thing in reality, this is mostly for a short-duration simulation which runs for a few K samples then stops. Obviously any real-world signal with any DC bias would rail this out. I'm still surprised the integrate_x blocks allow a decimation = 1 since that eff

Re: Integrate block functionality

2019-12-20 Thread Marcus D. Leech
On 12/20/2019 11:33 AM, Joe K wrote: Yeah, I understand it's not a practical thing in reality, this is mostly for a short-duration simulation which runs for a few K samples then stops. Obviously any real-world signal with any DC bias would rail this out. I'm still surprised the integrate_x bl

Re: Integrate block functionality

2019-12-20 Thread Joe K
Fair points. As a counter-point, though, Simulink's integrate block works exactly as you'd expect an "integrate" block to work. I don't expect the GR documentation to explain the fundamentals of a generalized block (any IIR filter) but it would be nice if they explained what the specific implemen