Phonetic Search Technology (PST) is a method of speech recognition.Clements, Mark, P. Cardillo, and Michael Miller. "Phonetic searching of digital audio." Proc. Broadcast Engineering Conference. 2001. 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”.
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