This paper describes a real-time 3D sound localization algorithm to be implemented with the use of an embedded DSP. A distinctive feature of this algorithm is that the audible frequency band is divided into three on the basis of the analysis of the effects of sound diffraction, such that in these three subbands specific schemes ate devised with the use of an IIR filter, three parametric equalizers, and a comb filter, respectively, so as to be run on a 16bit fixed-point DSP at a low frequency of 50 MHz. The result of a subjective listening test indicates that a DSP implementation of the 3D sound localization scheme achieves the low-power consumption, maintaining the high-quality sound localization, and hence that the proposed scheme is viable for embedded applications.
展开▼
