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英国剑桥大学开发的新版本语音识别工具开发包HTK。

    R1 - RM Speaker Independent Baseline Monophone Set
    --------------------------------------------------

This directory contains the RM Baseline monophones.  Each HMM except
sp is 3 state left-right single mixture.  The set in hmm0/MODELS were 
derived from the set of timit monophones (CMU 48 phone set) according 
to the following mapping (states labelled 1->3).

	RM	TIMIT
	--      -----
	
	iy	iy
	ih	ih
	eh	eh
	ae	ae
	ax	ax
	ah	ah
	uw	uw
	uh	uh
	ao	ao
	aa	aa
	ey	ey
	ay	ay
	oy	oy
	aw	aw
	ow	ow
	er	er
	l	l
        el      el
	r	r
	y	y
	w	w
	en	en
	m	m
	n	n
	ng	ng
	ch	ch
	jh	jh
	dh	dh
	b	vcl b		# vcl(2) + vcl(3) + b(2)
	d	vcl d		# vcl(2) + vcl(3) + d(2)
	g	vcl g		# vcl(2) + vcl(3) + g(2)
	p	cl p		# cl(2) + cl(3) + p(2)
	t	cl t		# cl(2) + cl(3) + t(2)
	k	cl k		# cl(2) + cl(3) + k(2)
	z	z
	v	v
	f	f
	th	th
	s	s
	sh	sh
	hh	hh
	dd	vcl d		# d + skip over d(3)
	pd	cl p		# p + skip over p(3)
	td	cl t		# t + skip over t(3)
	kd	cl k		# k + skip over k(3)
	dx	dx
	ts	cl t s		# cl(2) + t(2) + s(2)
	sil	sil
	sp	sil		# sil(2) (1 State tee-Model)