MATLAB: Difference beteween gtcc function and audioFeatureExtractor

Question

I am trying to compare the build-in function gtcc() and extract() for extracting the GTCC features of an audio

By using gtcc function as:

features_gtcc = gtcc(x,fs,"LogEnergy","ignore");

and using extract as:

extractor = audioFeatureExtractor("SampleRate",fs, …

"Window",hamming(round(0.03*fs),"periodic"), … % Defalt overlap and window size for gtcc function

"OverlapLength",round(0.02*fs), …

"gtcc",true);

features_extract = extract(extractor,x);

Two results are different.

Could anyone tell me why is that please?

Answer 1

Problem solved, it is because the parameter settings

the default setting in two functions is different:

audio feature extractor:

ERB spectrum default setting is:

Num band: 34

Spectrum type: power:

frequency [0, 8000]

The gtcc default setting is

Num band : 32

Spectrum type: Magnitude:

"FrequencyRange", [50, fs/2]

Make them the same ==> problem solved