Used for TREC system. Katrin's articulatory features combined with standard MFCCs for VerbMobil. Another astonishing system from Goto-san, here tracking a couple of melody lines from recorded music. Neatest part is the way he estimates a pdf for the fundamental pitches present from the full harmonic spectra by using EM to find a coherently explanatory set. Using data transformed this way to bolster the MLLR adaptation set gave significant improvements.
Information comes from accelerometers mounted on the machines.
But the signals are complex and hard to classify. K. Shikano, IBM Tokyo.