Abstract:

This paper improves a phase transform weighting function (PHAT) by weakening the noise cross spectrum, weighting signal tonoise ratio and applying the coherence function in view of the negative influence of the sensitivity of generalized cross correlation-phase transform (GCC-PHAT) algorithm to noise effect.  We therefore acquired an improved phase transform weighting function (IPHAT) to facilitate the more accurate estimation of time arrival difference in the effect of noise. Vast experiments prove the effectiveness of the presented algorithm.