1. A method comprising: receiving an input having a speech segment and a non-speech segment; establishing a first restriction of recognizing only speech states during the speech segment; establishing a second restriction of recognizing only non-speech states during the non-speech segment; generating, via a processor, a hypothesis lattice, wherein the hypothesis lattice allows any sequence of speech states and non-speech states; and generating a reference lattice, wherein the reference lattice is based on the hypothesis lattice and conforms to the first restriction and the second restriction.
1. A method comprising: receiving an input having a speech segment and a non-speech segment; establishing a first restriction of recognizing only speech states during the speech segment; establishing a second restriction of recognizing only non-speech states during the non-speech segment; generating, via a processor, a hypothesis lattice, wherein the hypothesis lattice allows any sequence of speech states and non-speech states; and generating a reference lattice, wherein the reference lattice is based on the hypothesis lattice and conforms to the first restriction and the second restriction. 3. The method of claim 1 , further comprising employing the reference lattice as a barge-in model for speech processing.