Posted by Adrian Mack [ 203.190.196.128 ] on February 13, 2004 at 03:50:18:

I'm trying to rearrange the power to decibel equation.

The equation is:

decibel = 10*log(P1/P0)

I need to rearrange it so P1 is on the left hand side of the equation. This is so I can determine the new power level (P1) given a decibel figure and old power level (P0) instead of given two power figures and finding decibel.

I know graphics calculators can solve for each number without re-arranging, but I need this for a microsoft excel spreadsheet which cannot solve like that. So I need to rearrange.

Can anyone help?

BTW: Formula is from JBL Sound System Design Manual.

Replies:

• P1 = 10^(Db/10)*P0 (nt) - GarMan 08:13:39 02/13/04 (1)
  • Thanks a lot! (nt) - Adrian Mack 10:27:13 02/13/04 (0)