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moto authored
Summary: The backend dispatcher is implemented in `torchaudio._backend`, while the legacy backend is implemented in `torchaudio.backend`. The initialization happen in `torchaudio._backend`. This commit moves it to `torchaudio.__init__`, so that `backend` and `_backend` is more independent. Pull Request resolved: https://github.com/pytorch/audio/pull/3548 Reviewed By: huangruizhe Differential Revision: D48219244 Pulled By: mthrok fbshipit-source-id: e694cb232794f90902a60ee51c7bf11b7f0548a0
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