Hi Def Audio Soundtracks on standard def DVD's?

I know that some Blu Ray discs have the Hi Def soundtracks. Are Hi Def Audio Soundtracks being recorded on standard def DVD's?
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No, they do not have the necessary storage space, only DD and DTS.
No they cant begoing to employ that technology, compared to BluRay audio capabilities old DVD is like FM stereo vs SACD.