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In order for waves to mix, there needs to be a nonlinear junction. As =
in a 'diode'
function for electrons, and ferrous products that contain oxides or =
dissimilar
metals.. all have some non linear juntions. For sounds waves to mix, =
there also
must be some non linear materials. I hear that air is non linear when a =
high
enough power and high frequency is utilized.. but do not know this for =
certain.
v/r Ken Carrigan
Hi all!
I know that if two sound waves are beat together, you get the =
two originals, the sum and difference waves.=20
Question: If you beat the output of two ultrasonic transducers, =
can the difference be heard if it is within the audible range? =20
EXAMPLE: Two transducers, 1 at 40KHz, the other at 39KHz are =
next to each other pinging away. Will you hear the 1KHz difference, or =
must your acoustic detection abilities be in the ultrasonic to hear the =
beat?
BillP
=20
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Hi=20 all!------=_NextPart_000_006B_01BE4DC1.CE84F740--
I know that if two sound waves are beat =together,=20 you get the two originals, the sum and difference waves.=20
Question: If you beat the output of two=20 ultrasonic transducers, can the difference be heard if it is within =the=20 audible range?
EXAMPLE: Two =transducers, 1=20 at 40KHz, the other at 39KHz are next to each other pinging away. =Will you=20 hear the 1KHz difference, or must your acoustic detection abilities =be in=20 the ultrasonic to hear the=20beat?
BillP