Adobe Audition Keyframe Values

Hi,

I am trying to work directly with the sesx file in a Text Editor. I would like to add Keyframes and the corresponding dB Levels. Unfortunately the Code contains a conversion of values between 0-1.

<parameterKeyframe sampleOffset="50000" select="false" type="linear" value="0.0062829009257256984710693359375"/>

<parameterKeyframe sampleOffset="550000" select="false" type="linear" value="0.91180324554443359375"/>

Does anybody know how these values are calculatet? 

Thanks for your help!