Computes the Long-Term Average Speech Spectrum from a folder of speech files or vector of speech samples
Syntax: [ spect, frqs ] = LTASS( speech_folder_OR_vec, nfft )
Inputs:
speech_folder_OR_vec - The path to the folder containing the speech
files OR a vector of concatenated speech signals
nfft - The number of FFT points used to compute the LTASS
fs - The sampling frequency to use (if not provided then the sampling
frequency of the file is used)
Outputs:
spect - The LTASS spectrum
frqs - The frequency vector for the spectrum