URL:https://sspark.genspark.ai/cfimages?u1=vcowPW1z2kcR29jbOgDIQoJsuqITe/jBbV0GR4W1yN6hEt3pKvq3LUb22gJEPbdy6qDw+qXAhs0kpntgUVaHPNYzouztYFri3N7Lh3FjGBJeEJ+2Ax2mQ9V110QjXy4rYq9C6VJTWDvqNo9Lc6UTLph4LmMymXG7GD1E+dbLI3A0POmaqA==&u2=yVd+YpbVDjQdnib2&width=1024
掲載元:https://www.genspark.ai/spark/デシベル-db-の差を体感倍率に変換する方法/be2a2998-e021-403d-8fe1-608a4f58922d