Hello,

I'm in my first year of engineering, and I have a project that involves the

scrambling of data using sound.

The set up is as follows:

-input a 4 digit number into a computer

-the computer scrambles the number using matrix algebra

-each number from the matrix has an associated sound to it (for a maximum of

18 sounds)

-the sound will be send through water via a submerged speaker

-the sound will be received via a submerged microphone

now here is where I'm stuck. I need to know what effects water has on

sound. I know for sure that the velocity changes. But in order to continue

my project, I have to be able to calculate what the original source sound

is.

Would the sound change frequency?

Anyways, once received and re-calculated, the sound would be reassigned to

its number between 1-18 and be put back through the inverse matrix to

retrieve the original 4 digit code.

Thank you for any help

-Tom Kurowski

tom_kurowski@ hot mail [dot] com

- posted 17 years ago