Re: [Discuss-gnuradio] Moving Average Block

[Timothée COCAULT]

Whoops, just noticed I didn't reply to all when I answered so my message and Pedro's response were not forwarded to the mailing list :

Le jeu. 7 janv. 2016 à 20:28, Pedro Gabriel Adami <address@hidden> a écrit :

Dear, Timothée,

Thank you so much. I am doing some tests and I've realized that the results are a little strange. That is why I asked.

Let me ask you one more thing: Do you know some block that is capable to retain N samples, so I can use them and after that, it retains the next N samples? Like a variable where I can "save" the information for a short period of time, but my Gnuradio does not have a "variable sink".

Thanks in advance.

Em 07/01/2016 17:18, "Timothée COCAULT" <address@hidden> escreveu:

Hi Pedro,

When you're not sure, the best solution is often to look at the code.

If you look at the work function in gr-blocks/lib/moving_average_XX_impl.cc.t, you see that the block first sums the history (of length 100 in your case).

For each additional input items, it adds the new item and subtracts the n-100 item, and outputs the current sum.

So it will first calculate 1+...+100, then 2+...+101 and so on.

Regards,

Timothée. 

 

I don't understand exactly your question but you can use a stream to vector to group your items in packets of size N, and plug it into a probe signal