METHOD FOR DETECTING VOICE OF PORTABLE PHONE AT SERIOUS NOISE ENVIRONMENT AND DEVICE THEREOF

摘要

PURPOSE: Provided is a method for detecting a voice using method for generating an analogous signal and device thereof which a voice detection function can be adapted into a prior portable phone by using a software only without addition of a hardware. CONSTITUTION: A method for detecting a voice includes (a) through (g) steps. The method extracts a voice by using a voice characteristic parameter generated from a voice vocoder. (a) step is to extract the voice characteristic parameter at the vocoder. (b) step is to generate an analogous signal by using the voice characteristic parameter. (c) step is to generate a gain of a frame analogous signal generated by summing the absolute value of the analogous signal. (d) step is to calculate a duplication average of the gain of the analogous signal by time. (e) step is to determine a voice section of a current frame by using the result of the duplication average of the gain of the analogous signal and the result of a prior frames. (f) step is to compensate a start position and a last position of the voice section output from (e) step by using the gain information. (g) step is to recompensate by using a spectrum information.