By Voichita Bucur
I've got discovered this a great e-book for figuring out a few elements of wooden utilized in musical software making. It confirms some of the conclusions reached from functional adventure. I simply want there has been a bit extra that was once appropriate to tool making.
Read Online or Download Acoustics of Wood (Springer Series in Wood Science) PDF
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Additional info for Acoustics of Wood (Springer Series in Wood Science)
According to the “mass law” for building materials, the transmission loss increases by a factor of about 5 for each doubling of surface weight. The higher the sound transmission class rating, the more efficient the construction in reducing sound transmission. Outdoor noise can be reduced by the windows. The attenuation of the windows can be improved using thick glass and proper joints, almost hermetically sealed. Another very important field of utilization of wood and wood-based composites as acoustical insulators is in the acoustics of concert halls, opera houses, lecture rooms, etc.
Another interesting example of an orthotropic wood composite is that of machine-made paper. Mann et al. (1980) describe the measurement of nine elastic constants using a transmission technique on a heavy milk carton stock (780 kg/m3). 3. These constants indicate that 48 Theory of and Experimental Methods for the Acoustic Characterization of Wood the paperboard is highly anisotropic. The Poisson’s ratios corresponding to the planes that include axis 3, the axis normal to the thickness, are remarkably high, undoubtedly tied-up with the misalignment of fibers in the plane of the sheet.
1989) proposed some improvement in the reduction of floor-impact sound levels in the receiving room. The floor−ceiling−wall system was re- 26 Wood and Wood-Based Materials in Architectural Acoustics Fig. 3. Sound transmission loss vs frequency in different materials: a plywood; b particleboard; c hardboard. ML Regression line. (Suzuki et al. 1986, with permission) modeled with high-rigidity panels and 10 dB was lost in the tire-dropping test. 4. B. 1989; Fothergill and Royle 1991) and in the USA (Dickerhoff and Lawrence 1971; Grantham and Heebink 1971, 1973).