cos, sinチャープ音による2ch観測信号間のクロススペクトルを用いた音響測距における雑音対策の検討

抄録

This paper describes a noise reduction method for acoustic distance measurement using cross spectrum between 2ch observations, constructing analytic signal based on cosine and sine linear chirp sound. Specifically, synchronous addition is applied to observed signals themselves or to their cross spectrum.