Propeller Head Plaza

Posted by andy_c (A) on May 08, 2008 at 19:38:14

In Reply to: RE: Easy posted by E-Stat on May 06, 2008 at 16:08:03

Pat D wrote:
"I don't know how you figure out distortion percentage..."

E-Stat replied:
"Use an online calculator."

There's something amiss with the calculation result of -33dB corresponding to 0.56 percent. The formula for converting dB to percent voltage is as follows:

percent_voltage = 100 * 10^(dB/20)

This gives -40dB = 1 percent, -20dB = 10 percent, -60dB = 0.1 percent, etc.

For -33dB, this gives 2.24 percent. This assumes the signal represented as dB is just one frequency component. I'm not sure what the specific nature of the distortion of this test was.

• Please read this sentence again - E-Stat 05:47:13 05/09/08 (3)
  • Actually it's two sentences and the reference isn't all that clear. (nt) - Pat D 19:45:43 05/09/08 (2)
    • It was the ONE sentence that apparently eluded you - E-Stat 07:08:28 05/10/08 (1)
      • RE: It was the ONE sentence that apparently eluded you - Pat D 06:40:19 05/17/08 (0)

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