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In Reply to: Exclusive mode questions posted by Gordon Rankin on February 12, 2007 at 08:19:34:
... if you open a session in exclusive mode using WASAPI, then no conversion is performed (other than scenarios such as you sending 16-bit data, and the driver bitpadding for a 24-bit DAC, and of course assuming a well written driver that does not try and resample on it's own).Certainly for SPDIF mode, there should be no conversion.
The discussion is a bit academic at the moment since I do not know of any application that supports WASAPI exclusive mode. Even Sonar is still using DirectKS.
However, in shared mode, everything is mixed and resampled to a common resolution, which you can specify (defaults to 48/16, but can be changed for example to 44.1/24 which is what I set it to). I suspect the mixing is done in 32-bits.
However, I am not an authority on this. Suggest you pose a question directly to Microsoft (the best way to do this is by attending WinHEC).
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- My limited understanding is that ... - Christine Tham 12:45:40 02/12/07 (0)
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