Many of the problems of Intonation recognition are encountered also (and perhaps in more tractable form) in the domain of lexical tone - the syllable-level prosodic patterning which in many languages distinguishes between words with identical segmental structures. For 'tone' languages - which may even be in a majority (ref 7, 9) - tone recognition is necessary for lexical disambiguation. Moreover, when tone interacts with intonation (ref 5), factoring out one may be a prerequisite for the extraction of the other. In this paper, procedures are described for the recognition of tone in citation-form monosyllables of Mandarin, i.e. Modern Standard Chinese (MSC).