Interesting you bring up DSP ... I've been following the DSP discussion for the Durango perspective (all rumors of course)...
From what I can gather MS will have a couple of DSP's that are being sold as a way to "future proof" the system..
We have an Audio DSP sitting on 1 of the 3 socs
We have Hardware DSP's sitting on the other 2 socs.
The following patents from MS
1.
"Using ray tracing for real time audio synthesis"
2.
"Exposing off-host audio processing capabilities"
Explicitly these patents talk about how "Audio DSP" on a device can be used as a source of audio stream signals that can be pushed to
a) other SoC/Components within the host for processing
b) to a different external host (like the cloud) for processing
(interestingly it uses RayTracing techniques to carry out processing of these signals)
The result of the processing can be returned back to the host, if it was processed outside of it, and the played ...
There are other patents that talk about using the other DSP's (video/HW) as sources of streams that can be orchestrated outside of the Host (cloud etc) ... basically using similar techniques as the audio dsp
I guess that's one way MS is future proofing its console, by adding a dimension of the cloud to augment their hardware via these DSP's...
I know its all rumors but its ive always been interested in the rumors of Durango and its DSP's as being a differentiating point ...