22. A speech analysis system as defined in claim 21 wherein said means for analyzing said speech signal to generate a voiced/unvoiced decision parameter further includes: means for monitoring said speech signal and counting the number of zero crossings in a predetermined time period; and means for comparing said number of zero crossings with a predetermined limit and generating an unvoiced decision parameter if said number of zero crossings is above said limit and generating a voiced decision parameter if said number of zero crossings is below said limit.
22. A speech analysis system as defined in claim 21 wherein said means for analyzing said speech signal to generate a voiced/unvoiced decision parameter further includes: means for monitoring said speech signal and counting the number of zero crossings in a predetermined time period; and means for comparing said number of zero crossings with a predetermined limit and generating an unvoiced decision parameter if said number of zero crossings is above said limit and generating a voiced decision parameter if said number of zero crossings is below said limit. 23. A speech analysis system as defined in claim 22 wherein said means for analyzing said speech signal to generate a voiced/unvoiced decision parameter further includes: estimate register means; means for comparing the output of said estimate register with the first autocorrelation coefficient produced by said linear prediction technique and setting said register to said first autocorrelation coefficient value if said coefficient equal to or less than said register value; and means for integrating the value in said register means if said coefficient is greater than said estimate register value; means for subtracting said estimate register value from said first autocorrelation coefficient value to generate a difference value; and means for comparing said difference value with predetermined upper and lower limits and generating a voiced decision parameter if said difference is greater than said upper limit and generating an unvoiced decision parameter if said difference signal is less than said lower limit.