Dept. of Phys., Southeastern Louisiana Univ., P.O. Box 878 SLU, Hammond, LA 70402
Henry E. Bass
Univ. of Mississippi, University, MS 38677
Acoustic measurements outdoors typically involve microphones located either on the surface or on stands which hold the microphone approximately 1.0 m above the ground. Arguments given for placing microphones on the surface include lower wind noise and ease of installation. Quite often microphones on the surface are mounted above a large solid sheet. In this talk, the effects of wind noise and ground impedance on the optimum design of measurement systems for different frequency and source position are considered.