Patent ID: 6260012
Filing Date: 2001-07-10
Classification: G10L,H04M

Abstract:
An apparatus for performing speech recognition in a communication terminal with a voice dialing function, comprising:a memory having a first region for registration of feature data with respect to an input voice, a second region for storing a number of trials upon every recognition with respect to the feature data, a third region for storing an accumulative mean value with respect to a series of threshold values obtained from a corresponding number of trials, stored in the second region to and through the preceding number of trials, and a fourth region for storing a specified threshold value;a vocoder for generating packet data according to an input voice;a voice recognition means for analyzing the packet data currently provided from the vocoder to thereby generate corresponding feature data, comparing the generated feature data with feature data of reference voices pre-registered in the memory to thereby search any similar data, and if it is searched the similar data, then outputting an index of the searched feature data and a difference value between the generated feature data and the registered feature data; anda controller for comparing the difference value outputted from the voice recognition means with a predetermined threshold value, so that if the difference value is less than the threshold value, then the feature data corresponding to the index are read out from the memory and delivered to the vocoder, calculating an accumulative mean value of threshold values for every trial of recognition with respect to the feature data to and through the present time, the accumulative mean value being stored in the third region of the memory, and by reflecting the accumulative mean value into the threshold value, updating the threshold value stored in the fourth region of the memory.