Effects of speech rate on consonants and vowels

[Martin Heckmann <Martin.Heckmann@xxxxxxxxxxx>]

Dear List,

I'm interested in the influences of
different speaking rates on vowels and consonants, mainly in the effects
on the steady state phase and the formant transition (e.g. does the slope
of the transition change or is mainly the steady state phase affected ?).
What is the effect of the speaking rates on plosives ? 

Does anybody have experince with this
or knows some literature to start with ?

Any help is greatly appreciated !

Thanks

Martin