11. An apparatus for recognizing particular phonemes in a voice signal as in claim 10, wherein said first parameter producing means comprises: means for converting an analog electrical signal of said voice signal to a digital electrical signal; register means for storing in turn a plurality of said digital signals; and means for producing said first acoustic parameter signal from said stored digital signals by Fourier-transforming a plurality of said stored digital signals.
11. An apparatus for recognizing particular phonemes in a voice signal as in claim 10, wherein said first parameter producing means comprises: means for converting an analog electrical signal of said voice signal to a digital electrical signal; register means for storing in turn a plurality of said digital signals; and means for producing said first acoustic parameter signal from said stored digital signals by Fourier-transforming a plurality of said stored digital signals. 18. An apparatus for recognizing particular phonemes in a voice signal as in claim 11, further comprising weighting means for weighting the power level of said first acoustic parameter signal to accurately represent the phonemic information in said voice signal.