Companding

[mh06069206]

Please help me answer this question will be greatly appreciated, what is the function in the loop?

[vt92]

Let's call the indexed input X[i]

For each loop iteration:

----------------------

If X[i] is <= inverse(A) then result = X[i]*A

else,

result = ln (X[i]*A)+1

----------------------

Is this what you wanted to know?

[CMal]

mahady,

The function in the loop is Natural Logarithm.  You can find out the name and description of any LabVIEW function by bringing up Context Help (ctrl-H) and moving your mouse over the function.  You can then click "Detailed Help" to see more information about the function.

Chris M

[mh06069206]

Ahh beautifully explained, I see ur using array indexing here, but briefly could u explain how u came up with inverse(A)? Are u familiar with the a law compression?