I am using 4 white noise sources with seed and the application requires them to be uncorrelated. When using SigmaStudio to control the ADAU1701 DSP through the USB interface, the sources output the same signal, i.e. they are completely correlated. Sometimes they will become uncorrelated after being switched on and off several times but this is not predictable.
I can see the seed being sent in the output window when the source is switched on or off, but this doesn't seem to matter to the actual output noise generated.
Is there any way to correct this and have the noise sources truly independent and uncorrelated?