how to estimate pitch of speech signal for each frame ?

i divded my speech signal into frames,, but i dont know how to find pitch for each frame?

Answer 1

[AR]

Hi @Mohamed ibrahim,

You can use the “pitch()” function in MATLAB to estimate the pitch of the speech signal. If you have already divided your speech signal into frames (for example, each column in the matrix is a frame), you need to process each frame individually since the function expects a vector as input and not a matrix of frames.

For reference, here is a link from the community which discusses a similar approach:

https://www.mathworks.com/matlabcentral/answers/458980-how-to-calculate-the-pitch-for-a-audio-frames?s_tid=srchtitle

Example: If the frames are stored as columns in a matrix called frames and the sampling frequency is fs, use the following approach:

for i = 1:size(frames,2) 
    frame = frames(:,i); 
    pitchValue(i) = pitch(frame, fs); 
end 

This will give the pitch estimate for each frame in the array pitchValue.

It is often easier to let “pitch()” handle the framing by specifying the window and overlap lengths, but if you already have frames, the above method will work.

To know more about the “pitch()” function, run the following command:

doc pitch

Hope this helps!