1. A method, comprising: determining a fuzzy rule to discriminate a speech segment from a non-speech segment, wherein an antecedent of the fuzzy rule includes an input variable and an input variable membership, and wherein a consequent of the fuzzy rule includes an output variable and an output variable membership; extracting an instance of the input variable from a segment; training an input variable membership function associated with the input variable membership and an output variable membership function associated with the output variable membership; and operating the instance of the input variable, the input variable membership function, the output variable, and the output variable membership function, to determine whether the segment is the speech segment or the non-speech segment.