Fig. 4From: Effect of extraction on the acoustic vibrational properties of Picea jezoensis var. microsperma (Lindl.) W.C.Cheng & L.K.FuRelative change in the logarithmic decrement (δL), sound transmission parameter (υL/δL), and acoustic conversion efficiency (υL/(δL·ρ)) after treatment with deionized water, dichloromethane, benzyl alcohol, and ethanolBack to article page