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Voice Audio Data and Pitch Extraction

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jcclar12 el 13 de Oct. de 2022
Comentada: jcclar12 el 3 de Nov. de 2022
I want to extract numerical data from raw voice audio files(.wav)- take out the numeric pitch (Hz) and do specturm analysis in a voice audio file. However, I want to have the pitch throughout the audio file with time stamps to a later to be converted to a .csv or .txt, and for other analysis like spectrum and stats.
How do I do that? I am looking for succesful code. I am new to Matlab, but I have the audio packages already installed. So far I seen parts of what I want to do on the internet, but they never work. As for now the data is not noisy, but I might need to clean some with extra sound in the background.
Thanks for your help in advance.

Respuesta aceptada

jibrahim el 20 de Oct. de 2022
You can use the pitch function to get pitch values along with the time stamps
[x,fs] = audioread("SingingAMajor-16-mono-18secs.ogg");
winLength = round(0.05*fs);
overlapLength = round(0.045*fs);
[f0,idx] = pitch(x,fs,Method="SRH",WindowLength=winLength,OverlapLength=overlapLength);
tf0 = idx/fs;
  3 comentarios
Walter Roberson
Walter Roberson el 2 de Nov. de 2022
The internal code uses
hopLength = params.WindowLength - params.OverlapLength;
numHops = floor((size(x,1)-params.WindowLength)/hopLength);
varargout{2} = cast(((0:numHops)*hopLength + params.WindowLength)','like',x);
So it is more or less creating windows, and you are getting an index for each window.
jcclar12 el 3 de Nov. de 2022
Thank you!

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