So we actually have a device name to get the initial settings for. Be aware
that some backends set a format when opening instead of on reset, so such
devices will only set the default format (it can't get a desired format without
the device name, but the format will already be set once that's known). The
affected backends are WinMM, SDL2, and PortAudio (none of which are generally
used). This could be fixed by reopening the device during reset, but it would
need to be done carefully.
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