Mo writes:
I have a question for Bob , and couldn’t think of a better way of getting in touch!
I read with interest your treatise on aliasing in digital dynamics processors vs sample rate/oversampling. I have a background in electronics (University is a distant memory at this point though!), and a career as a sound engineer – what I found incredible in the essay was the published graphs with noise floor through analogue processors down well below 100dB! Truly remarkable!
I imagine it takes a combination of very high quality conversion, short cabling & very clean mains/earthing arrangements. Is this something you would be wiling to discuss, and/or point me in the direction of resources to research on my own?
Thanks for your time, if you made it this far!
Cheers,
Mo Storey
Hi, Mo.
I made it “this far”. 🙂 Keep in mind that the level of individual bins is far lower than the average level of all the bins combined. So it’s not difficult to see an individual bin well below the actual RMS level of all the bins together.
You’ll see that in any decent FFT spectrograph, and depending on the number of bins (samples), the individual bins will show different amounts of some very low level.
Hope this helps,
Bob