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Phonetic Search Technology (PST) is a method of speech recognition. [1] An audio signal of speech is broken down into series of phonemes, which can be used to identify words. A string of six phonemes for example, “_B _IY _T _UW _B _IY,” represent the acronym “B2B”.[ citation needed]


  1. ^ Clements, Mark, P. Cardillo, and Michael Miller. " Phonetic searching of digital audio." Proc. Broadcast Engineering Conference. 2001.