ACOUSTIC AND ELECTRICAL PROPERTIES OF WOOD Flashcards
- is in relation to sound or it
refers to its capacity to absorb
or reflect sound and reduce
vibrations
Acoustic Property
- ability to absorb and prevent
reflections of sound
Acoustic Property
- has a high damping capacity;
therefore, it is an ideal material
for structural components in
which vibration is unwanted
Acoustic Property
WOOD IS ACOUSTIC:
- Presence of pores, vessel lines, and microcapillaries
- Fabricated holes
- Fabricated striations
_________ wood is effective as a sound-absorbing material because it exhibits a small specific impedance (Smardzewski et al. (2014)
high porosity
__________ is essential in the design and construction of musical
instruments, The placement, size, and shape of these holes
influence the resonance, tone, volume, and overall acoustic
performance of the instrument
fabricated holes
__________ is a craftsmanship of the instrument, including how the wood is treated, shaped, and assembled, also plays a significant
role in determining the final sound.
fabricated striations
SOFTWOOD has a _____ sound absorption at high frequencies;
effective in reducing echoes and
_____ sound reflection;
better for diffusing sound.
high; moderate
HARDWOOD has a ____ sound absorption overall; absorbs less high-frequency sound and ____ sound reflection especially at lower frequencies.
lower; high
_______ are better in reflecting soundwaves
denser wood
_______ are sustain and creates more sharp tone
hardwood
______ are less sustain and has a softer tones
softwood
- Unit used to measure sound, named after Alexander Graham
Bell
DECIBEL
______ decibel is the normal level for human.
60-70
_____ is the maximum for safe volume level for ears.
80 dB