FilterbankFeaturesTA imcompatible with FilterbankFeatures

[msis]

The new FilterbankFeaturesTA does not use the same naming convention as FilterbankFeatures.
This leads to errors when using the FilterbankFeaturesTA in a model.

For instance here:

NeMo/nemo/collections/asr/models/ctc_models.py

Lines 160 to 161 in ddb92e3

	dither_value = self.preprocessor.featurizer.dither
	pad_to_value = self.preprocessor.featurizer.pad_to

While FilterbankFeatures defines those attributes, FilterbankFeaturesTA uses different naming:

NeMo/nemo/collections/asr/parts/preprocessing/features.py

Lines 540 to 541 in ddb92e3

	self._dither_value = dither
	self._pad_to = pad_to

[titu1994]

Oh thank you for raising this, and also for the PR. Very nice catch. I'd ideally like to have a ci test for Torchaudio stuff, but until our containers include it as part of the Nvidia pytorch container it will be challenging.