Pluralizing simple similarity based on a natural observation method of normal type, with an application to speaker-independent vowel recognition.

The similarity method is an effective matching method for pattern recognition, especially for character recognition. However, for waveform recognition in the time domain, it cannot make enough allowance for possible deformations of waveforms and therefore does not show good performance. In this paper, we improve the allowance of the simple similarity by using the pluralizing method. To apply the pluralizing method, waveforms are expressed in the expansion formula with the natural observation theory of normal type. The effectiveness of pluralized simple similarity is verified by a simulation of speaker-independent vowel recognition. Another improvement considering speaker individuality is also mentioned. © 1997 Scripta Technica, Inc. Electron Comm Jpn Pt 3, 80(12): 1–9, 1997 [ABSTRACT FROM AUTHOR]