By Voichita Bucur

From the reports of the first edition:

"It would certainly stay the main entire paintings during this box for a very long time to come back. It belongs at the bookshelf of each fabric scientist and structural engineer."

CAS magazine, USA

"...[T]he writer has performed an admirable activity, accumulating, organizing, and reviewing the disparate literature on such a lot features of the Acoustics of Wood."

Journal of the Acoustical Society of the US, USA

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Extra resources for Acoustics of Wood

Sample text

When the particle motion is perpendicular to the propagation direction, we have a shear wave or a transverse wave. In anisotropic materials both longitudinal and transverse waves can propagate either along the principal symmetry directions or out of them. 1 shows the case of an orthotropic solid. Surface waves can propagate in any direction on any isotropic or anisotropic substrate, and can be used for the characterization of elastically anisotropic solids having piezoelectric properties as well as the characterization of layered solids (Edmonds 1981).

The authors stated that the profile of the frequency spectra of the impact noise of a tapping machine and tire drop are very different, but their radiation factor spectra are almost the same. Nakao et al. (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.

Buildings constructed with satisfactory acoustics are characterized by the control of the transmission loss of sound through the construction elements, the absorption of sound within a space, and the separation of noise sources from quiet spaces. Solid wood and some wood-based composites can be considered as acoustic materials because of their ability to absorb an important amount of incident sound in order to reduce the sound pressure level or the reverberation time in a room. Wood materials are applied to walls and ceiling surfaces or to floor platforms and are occasionally suspended in the room volume, depending on the performance requirements of the room space, for speech and music listening, in offices, industrial buildings, homes, etc.

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