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# José Goulart

### Universidade de São Paulo

8 total contributions since 2011

Electrical Engineering Master degree student
Professional Interests: Nonlinear System Theory, System identification, Signal processing

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Question

Wrong result when using BLAS dot product routine (DDOT) from a MEX file
Hello, I am trying to call some BLAS routines from MEX code. First, I am trying to compute a scalar product with the fuction ...

4 years ago | 1 answer | 0

### 1

answer

Question

Unexpected numerical errors in matrix/vector multiplication
Hi, I have observed an apparently very strange behavior when running a Matlab script. I have a very long data vector t (wit...

5 years ago | 1 answer | 1

### 1

answer

Submitted

Fast Volterra Filtering
Fast algorithm for computing the response of a discrete Volterra model given a input sequence.

8 years ago | 4 downloads |

Answered
which pdf should be choose for a System Identification and prediction based on Expectation maximisation?
Armand, To model a system using system identification, one approach commonly used is the so called prediction error approach,...

8 years ago | 0

Question

Numerical integration "backwards"
Hello everyone, I have a system of nonlinear equations on the form x1' = f1(x1,x2,x3) x2' = f2(x1,x2,x3) x3' = f3(x...

8 years ago | 1 answer | 0

### 1

answer

Answered
FFT of a sine sweep
Yes, there is. In fact, the expression of the Fourier Transform for a linear sweep involves a constant of A/2, where A is the...

8 years ago | 0

Answered
FFT on a segment of a signal
Function findpeaks() finds all the local maxima on your data. After that you would have to find the largest of the points return...

8 years ago | 0

| accepted

Answered
Constant in a transfer function
Elias, I think this is happening because you haven't defined a value to the b variable yet. For instance, if you try this inste...

8 years ago | 1

| accepted