Edge diffraction from a wave traveling along the surface of a front baffle is pretty well supported.
My point exactly. There is a great difference between a wave travelling thru a material and a wave travelling over a surface. In physics a paper material cannot support a transverse wave nor can wood or the like. I tried to introduce a shear wave into lead once and despite frequency or incident angle i could not. Its all dependant on density and elasticity.
ron
My point exactly. There is a great difference between a wave travelling thru a material and a wave travelling over a surface. In physics a paper material cannot support a transverse wave nor can wood or the like. I tried to introduce a shear wave into lead once and despite frequency or incident angle i could not. Its all dependant on density and elasticity.
ron
Now this is just a logic question.
1: How can any material have an effect with an effective height of 2-10 mm on a wavelength of > 1 meter?
2: If its truly a transverse wave in the material ( i cant see how) then the dia of the emitting surface is the limitation in wave effectiveness.
3: once the wavelength is > the effective dia of the transducer, how can any reflectors/absorbers be effective.
I truly havent studied the assumpution, this is just purly first thoughts.
ron
1: How can any material have an effect with an effective height of 2-10 mm on a wavelength of > 1 meter?
2: If its truly a transverse wave in the material ( i cant see how) then the dia of the emitting surface is the limitation in wave effectiveness.
3: once the wavelength is > the effective dia of the transducer, how can any reflectors/absorbers be effective.
I truly havent studied the assumpution, this is just purly first thoughts.
ron
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