how to find normalized centered instantaneous of amplitude,phase and frequency using matlab code?

I work in digital modulation classification using neural network as first step is to extract feature I chose spectral feature which based on find instantaneous amplitude, phase and frequency. can anyone help me how to find them?

[Greg Heath]

Length of signal? Sampling rate?

[Redflower]

Length 1001 Sampling rate 100

Answer 1

[Shrey Joshi]

For instantaneous frequency you can use instfreq function in Signal processing tool. You can also look at following doc. https://www.mathworks.com/help/signal/ug/hilbert-transform-and-instantaneous-frequency.html. As shown in the doc link: For monocomponent signals: z = hilbert(inputData); instantaneous amplitude = abs(z) ; instantaneous phase = unwrap(angle(z)) ; For multicomponent signals: you can compute spectrogram and track the peaks of the power spectral density for computing instantaneous amplitude and frequency (see tfridge)

[Redflower]

thank you Joshi for replaying. actually I did like your codes and these make me sure I am in right way.

[edu ab]

how did you find the normalized centered instantaneous of amplitude,phase and frequency it is not clear for me can you help