FIELD: physics.
SUBSTANCE: speech analyser has a speech signal input unit, a frequency conversion unit, an autocorrelation unit and a base frequency detecting unit. The frequency conversion unit converts a speech signal received in the speech signal input unit to a frequency spectrum. The autocorrelation unit calculates autocorrelation oscillation during shift of the frequency spectrum on a frequency axis. The base frequency detecting unit calculates frequency based on the local interval between crests or depressions of the autocorrelation oscillation.
EFFECT: more accurate and reliable detection of voice frequency and more accurate evaluation of emotions.
9 cl, 5 dwg
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Authors
Dates
2010-11-10—Published
2006-06-02—Filed