triphone
Definition - A sequence of three phones. In natural language processing. they are used to establish the various contexts in which a phoneme can occur.

Example Usages -

1. "Sometimes phones are considered in context. There are triphones or even quinphones. But note that unlike phones and diphones, they are matched with the same range in waveform as just phones. They just differ by name. That's why we prefer to call this object senone. A senone's dependence on context could be more complex than just left and right context. It can be a rather complex function defined by a decision tree, or in some other way."
(Source: CMUSphinx: Open Source Toolkit For Speech Recognition )



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