[WIP] refactor filtering and scaling of spectrograms#405

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superbock wants to merge 9 commits intomainfrom fix_248

+418-131

Commits on Jul 23, 2019

refactor FilterbankProcessor
Sebastian Böck
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add Scaling Processor
Sebastian Böck
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use Filterbank- and ScalingProcessor in features.*
Sebastian Böck
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add option to compute non-complex STFT
Sebastian Böck
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add literal filterbank types
Sebastian Böck
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enable Filterbank creation without bin_frequencies
Sebastian Böck
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enable filtering of magnitude spectrogram during computation of STFT
Sebastian Böck
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perform filtering in blocks
Sebastian Böck
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move filtering in features.* into STFT processor
Sebastian Böck
committed