I haven't been able to find any source explaining what the FBANK features are.
As a reference, I have been reading this paper here which mentions that they have used 20 MFCC coefficients from 40 mel filter banks. You can also find libraries in python for extracting such FBANK features such as this one.
The aforementioned paper mentions:
we extract 20 coefficients from 40 mel filter banks (FBANKs)
Are FBANKs features produced during the procedure of extracting the MFCC features from a signal? Can someone explain what those features are?