30. A method of analyzing a speech signal as defined in claim 29 wherein said step of analyzing said speech signal to generate a voiced/unvoiced decision parameter further includes: monitoring said speech signal and counting the number of zero crossings in a predetermined time period; and 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.
30. A method of analyzing a speech signal as defined in claim 29 wherein said step of analyzing said speech signal to generate a voiced/unvoiced decision parameter further includes: monitoring said speech signal and counting the number of zero crossings in a predetermined time period; and 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. 32. A method of analyzing a speech signal as defined in claim 30 wherein said step of analyzing said speech signals to generate a voiced/unvoiced decision parameter further includes: comparing an error signal generated by said linear prediction technique with predetermined upper and lower limits and generating a voiced decision parameter if said error signal is equal to or less than said lower limit and generating an unvoiced decision parameter if said error signal is equal to or greater than said upper limit.