SPECIFIC FORMS OF INDIVIDUAL PRODUCTION IN SPEECH EXPRESSION - FORENSIC IMPLICATIONS
Keywords:
speech expression, specific production forms, segment variance, prosody variance, forensic identification of speakerAbstract
In this work, possible individual productions in speech expression are explained, together with their importance in biometric and forensic identification of speaker. With the term specific individual productions it is meant that there exists a visible variance from typical speakers production in some of the analyzed occurrences in speech. Even though, the native speakers of one language acquire common articulation base both with the environment in the language they are exposed, personal biological and psychological characteristics of every individual cause various forms of individuality in speech production. Apart from personal biological and psychological characteristics, variance might be caused by specifics of communicative situation. In forensic analysis individuality is researched and it can be expressed in a few features which might be important markers. This work discusses the most important individual characteristics, for example: voice quality, articulation quality, basic tone pitch, specific features of certain speech segments articulation (voices and voice connections, strange words, together with prosody characteristics) tempo, rhythm and scope of international variations and loudness variations). The speaker may produce variances in some of the given markers, and may vary in a few markers because some of them by cause and effect are mutually connected, as for example tempo and articulation quality are connected. With various examples in the real productions (cases) demonstrated a greater number of such speech manifestations and it was emphasized how importance in biometric and above all for forensic analysis in case of speaker identification.
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