Audio Feature Extraction from .MAT file instead of .Wav files

Hello,

I have snore signal that is sampled at 10hz stored in a .mat files. But in order to extract audio features such as MFCC. we need audioin mfcc(audioIn,fs) which is obtained from a wav file [audioIn,fs] = audioread(wavfile.wav)

Is there a way where can I directly compute MFCC from the .mat files or Do i need to convert each .mat file into .wav file and then calculate audioIn.

Also , I am not familiar how to convert .mat files in .wav files keeping the sampling rate (10hz) common. Could somebody help

Thank you.

Answer 1

[Jonas]

if you have already stored the audio data in a mat file (meaning you have it already in an ordinary matlab variable) you can just use the mffc() directly with that variable. audioread() just converts wav to a normal matlab variable which you, in this case, already have