DEVICE FOR ELIMINATING NOISES GENERATED IN A CALL, CAPABLE OF REDUCING TONE QUALITY DISTORTION BY EFFICIENTLY ELIMINATING NOISES IN VARIOUS ENVIRONMENTS

摘要

PURPOSE: A device for eliminating noises generated in a call is provided to reduce tone quality distortion by efficiently eliminating noises in various environments in which various noise sources are inputted.;CONSTITUTION: The first and the second frequency domain transformation unit(430A,430B) respectively changes the first and the second voice signals in which noises is mixed. A bin comparator(440) determines whether current section is in a sound interval or noise interval using the changed first and second voice signals. A subtracter(455) subtracts a voice signal component from the transformed second voice signal. A noise clustering unit(460) determines a noise type about the second voice signal in which the voice signal component is subtracted in the noise interval. A noise removing algorithm(470) eliminates noises corresponding to the noise type from the transformed first voice signal.;COPYRIGHT KIPO 2010