Wav file scale factor I seek a scaled audio file format for my dsp output.

I'd like to produce "scaled wav files", when I've done my pre processing. Eg. if the amplitude is 15.5 (of whatever unit), you should be able to open a standard wav/whatever file and see "15.5". 

If you produce a normal 16 bit wav file, you have to tell the user, to scale all values with value xx.xx. This would be ok, if the scale factor could be included in the file, in a standardized fashion. But so far I haven't been able to find any "scale factor" field in the wav format?

Another way could be to produce a 32 bit float wav file. This could actually contain the value "15.5". Problem is that wav float values are defined to be in the range [ -1.0 : 1.0 ]. I've tried opening such a file in different freewares like eg. Audacity. But they don't take well to the larger scale. They still only display the [ -1.0 : 1.0 ]. 
Do you know a program that will display large scale float wav files?

(Btw I do realize that the "scaled audio" is not "audio" anymore.)
This link implies that .wav files have several standards for storing 32 bit floating point.  It looks like foramt 32-bit 16.8 float (type 1 - 32-bit) would do what you want.  

As best I can see, SOX (reference) can work (read it at least) with this type of format, so you could look at the source code to see how to generate/read these files.  CoolEdit claims to be able read and write this format (see first link.)