Just running some tests with an Axe FX II for a report for my degree.
I'm noticing that running white noise from my DAW through the Axe FX via USB and S/PDIF (using my Focusrite Liquid Saffire 56) and returning the signal to my DAW in the same way gives different frequency responses. I assumed that, since both are in the digital domain, these would be identical.
Just wondering if there was some reason for the difference (I'm assuming some sort of pre-emphasis) and if one is superior to the other and if so why?
In case any of you are interested, with the input routed straight to the output (no blocks in the chain, just a straight line from input to output), the S/PDIF signal comes back in pretty much flat and the USB comes back in with what looks like a 6dB/8ve rolloff from 10kHz up.
Cheers!
Ben
I'm noticing that running white noise from my DAW through the Axe FX via USB and S/PDIF (using my Focusrite Liquid Saffire 56) and returning the signal to my DAW in the same way gives different frequency responses. I assumed that, since both are in the digital domain, these would be identical.
Just wondering if there was some reason for the difference (I'm assuming some sort of pre-emphasis) and if one is superior to the other and if so why?
In case any of you are interested, with the input routed straight to the output (no blocks in the chain, just a straight line from input to output), the S/PDIF signal comes back in pretty much flat and the USB comes back in with what looks like a 6dB/8ve rolloff from 10kHz up.
Cheers!
Ben