How to create a buffer FIFO, filter and then save in an array values that are between an specific range of values?

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Mariana 2020-2-15

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评论： stozaki 2020-2-18

Real_time_processing.slx

I have a sine wave as input signal at a sampling rate of 0.02. I want to process the first 1000 sampling points = 20 sec in a FIFO buffer

Signal ---> buffer size (1000) ---> full --> save in an array only values that are negative. --> next 20 seconds.

This is the simulink implementation that I have so far. My idea is to have two signals the real one an the delayed one. Save in a buffer the data from the delayed signal. Lets say that the delayed signal has a delay of 20 seconds, from this one I buffer the first 20 seconds and apply my filter of negative values and save them in an array. That means that when I buffer the next 20 are ready to be buffered, processed and filter.

Hope we can discuss some good ideas!

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Mariana 2020-2-16

Thanks! I also started to use the buffer box. Why the unbuffered box is also added?

stozaki 2020-2-18

unbuffered box :

It is simply to facilitate understanding.

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stozaki 2020-2-16

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Real_time_processing_ref.slx

I attached modified model you made.

unbuffer is just for the description of the block. It is arranged to explain the difference from Buffer. There is no more meaning.

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Mariana 2020-2-17

How can I delete the data from previous steps. I dont want accumulate all values in the matrix. I just want to have a fixed number of 1000 values inside this matrix.

stozaki 2020-2-18

Sorry there are same model.

color setting is :

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Signal Processing DSP System Toolbox Signal Generation, Manipulation, and Analysis Signal Generation

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