How to find harmonic amplitude in a signal using neural network

I need to find the amplitude of harmonic present in the current signal. Suggestions and help is appreciated.

Answer 1

[Greg Heath]

A neural network cannot be used to implement the FFT function.

A NN typically represents a point-to-point mapping between an I-dimensional input function and an O-dimensional output function. A single I-dimensional sample from the input function will map to a corresponding single O-dimensional sample of the output function. A reordering of input samples will yield a corresponding reordering of output samples.

The FFT represents a function-to-function mapping. Each point of the output depends on each point of the input. Single point transformations and point reordering are not defined

Hope this helps.

Thank you for formally accepting my answer

Greg

Answer 2

[Greg Heath]

Do not use a neural network. Use a DFT or, for equally-spaced FFT.

 help fft
 doc fft

 or search the NEWSGROUP using

 dftgh

Hope this helps.

Thank you for formally accepting my answer

Greg

[Greg Heath]

Why do you want to do this? It is a waste of time ... unless it is a school assignment or you know something that I don't.