* operation in the simple DSP

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kiyarash
Posts: 27
Joined: Tue Apr 11, 2017 10:44 am

* operation in the simple DSP

Post by kiyarash »

assuming that the input to the simple DSP box is a matrix X and we write the expression X*X as the Equation.

does the * operation in the simple DSP box mean matrix multiplication or is it an element-wise multiplication?

jtlindgren
Posts: 775
Joined: Tue Dec 04, 2012 3:53 pm
Location: INRIA Rennes, FRANCE

Re: * operation in the simple DSP

Post by jtlindgren »

Hi Kiyarash,

its an element-wise multiplication. All the operators (+,-,*,/) of Simple DSP are elementwise.

- If you need 'constant matrix * X', you can get this from the Spatial Filter box (the filter is the constant matrix).
- If you need matrix product 'X*Y' or 'X*X' for matrix chunks, this would need to be developed, afaik.


Cheers,
Jussi

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