'Time-frequency transform of times series along the last axis.
Parameters
X : array, shape (n_samples, n_channels, n_times)
The training data samples. The channel dimension can be zero- or
1-dimensional.
y : None
For scikit-learn compatibility purposes.
Returns
Xt : array, shape (n_samples, n_channels, n_frequencies, n_times)
The time-frequency transform of the data, where n_channels can be
zero- or 1-dimensional.'

def fit_transform(self, X, y=None):

    return self.fit(X, y).transform(X)
