signal processing

[chbrk]

thread576-86842

hi, i have same problem. I am preparing signal A to D -> D to A proccesing line. But I restoring samples faster than I sampling analog signal. I would like to collect for example 10 samples and then start reconstruction of orignal signal. I was trying to use memory stored data ( read, write ) blocks.
I delay execution of memory read block but with this method i am still able to read, only present samples( the samples which were collected via memory write block before execution of memory read block are unaccesible).Please advise.

 

[GregLocock]

What happens if you have a chain of 10 delay blocks in series?



Cheers

Greg Locock


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[GregLocock]

More usefully, with a fixed step size of 0.01 s , and a transport delay block set at 0.1 seconds, you get a 10 step delay.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[chbrk]

thank you Greg for quick answer.

I appreciate your idea, but my converter is asynchronous and I am not able to predict the delay.

This is my problem:

In DA part of my converter when I need access to second sample after proccesing first one, the second sample is unavaible because AD part doesn't complete producing this sample.

I am a little bit desparte so i try to save all samples to untitled.mat file and in the second instance of simulink restoring this data, but in this case restored data have different resolution.

I am about to exhaustion.

Any other sugestion?

 

[GregLocock]

I'd be inclined to do your delay process as an m file.

Simulink is very clever at some things, but ultimately it makes some easy things tricky.



Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[GregLocock]

I get 10 memory blocks in a row working as I'd expect.

Bear in mind you need to do the same with the clock signal otherwise you'll be using the wrong timebase.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?