NewIndices = spConvertIndices(SampleRate, OldFrameAdvanceMS, ...
			      NewFrameAdvanceMS, Indices)
% NewIndices = spConvertIndices(SampleRate, OldFrameAdvanceMS,
%				NewFrameAdvanceMS, Indices)
%
% Given a set of Indices under a specified sample rate and frame 
% advance rate in milliseconds, convert them to a new frame advance.

