Finding energy of speech signal

Hi all. I have speech signal, and I divided it into frames with 150 samples. How can I calculate the energy of each frame? I'm trying to decide which frame is voiced or unvoiced. by looking their energy.

Answer 1

[Baltam]

You could take the rms value of all columns of x. After that, define your own threshold to determine what is speech and what isn't.

x_rms = rms(x,1); % this gives a row with the root mean square values of the collumns/frames.

Kind regards, Baltam