My input numbers are close to 10, here is a sample of some:
I am using this PHP library thinkingmik/FastFourierTransformation
My peak numbers in response are about 500. A control which was done using another tool is 1-1.5
FFT is well over my head, so I am trying to read this library to get a bit of an idea, but can't figure this out. The interesting thing is the client says the chart seems to be correct, just numerical values are wrong.