Enh/spectrograms/add kwargs to mel
Adds **kwargs to the __init__() method of MelSpectrogram, so that additional arguments (e.g.: n_ceps, n_filters) can be passed when creating a Mel spectrogram
Adds **kwargs to the __init__() method of MelSpectrogram, so that additional arguments (e.g.: n_ceps, n_filters) can be passed when creating a Mel spectrogram