José S. FloresAlfredo H. Otero2026-03-222026-03-22197410.1121/1.1903255https://doi.org/10.1121/1.1903255https://andeanlibrary.org/handle/123456789/62396A new method for treating the problem of infrasonic-noise spatial coherence with relation to a noise-reducing array design is developed. The behavior of this coherence at Peñas, Bolivia (4000 m above sea level), is investigated. The optimum spacing between sampling inlets for that particular location seems to be approximately 12 m at this preliminary stage of the work. The noise recorded with a two-inlet noise-reducing array at a 12-m separation was 40% less than that using only one inlet.enCoherence (philosophical gambling strategy)InletAcousticsNoise (video)Spatial coherenceInfrasoundEnvironmental scienceGeologyarticle