13. The system of claim 10 , wherein the unit of speech is one of a syllable, a word, a sentence, a context-dependent phone, and a context-independent phone.
10. A system comprising: a processor; and a computer-readable storage medium having instructions stored which, when executed by the processor, cause the processor to perform operations comprising: determining a context associated with an utterance received via a microphone that converts audible signals into electrical signals; determining, via a processor, phoneme possibilities for a unit of speech in the utterance; assigning weights to each phoneme possibility in the phoneme possibilities, to yield weighted phonemes, wherein the weights are based on a rate of occurrence of the phoneme possibility in utterances associated with the context and a likelihood of classification errors; receiving additional utterances via the microphone; and converting the additional utterances into text via a speech recognizer that uses the weighted phonemes.