Sound source localization method based CDR mask and localization apparatus using the method

摘要

According to a first characteristic of the present invention, provided is a sound source localization method for achieving a technical problem of a mask based on a dispersion degree, which comprises the steps of: (a) receiving a signal mixed with a target sound source signal, a noise, and an echo signal through a multi-microphone including at least two microphones; (b) generating a binarization mask based on a dispersion degree using a ratio of consistency to dispersion degree (CDR) which is information on a target sound source and a noise source using the inputted signals; (c) preprocessing the input signal to the multi-microphone using the generated binarization mask; and (d) estimating a direction for a target sound source by performing a preset algorithm such as GCC-PHAT or SRP-PHAT on the preprocessed input signal.