mtmd: refactor audio preprocessing (#17978)
* mtmd: refactor audio preprocessing
* refactor
Co-authored-by: Tarek <tdakhran@users.noreply.github.com>
* wip
* wip (2)
* improve constructor
* fix use_natural_log
* fix padding for short input
* clean up
* remove need_chunking
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Co-authored-by: Tarek <tdakhran@users.noreply.github.com>
