Today I tried to make the MMb2 NOS mode visible.
I played a 1kHz test tone with different sampling rates, recorded it and analyzed it afterwards.
I noticed that as soon as the sampling rate is not 44.1 kHz, the result is practically identical to the OS mode.
Yesterday I read from someone who programs fir filters that it largely nullifies the effect of the NOS circuit if you oversample the signal beforehand (in my case neutron player). That would prove my measurement to some extent.
But I wonder why the signal is already at 48kHz, identical to the OS?
As you can see in the spectrum analyzer, and in the spectrogram, the fundamental, and the overtones only at 44.1kHz is somewhat blurry, or lil distorted, as you would expect.
Can you explain to me why this is so?
Is an analog filter active in NOS mode?
(I think so.)
Which sampling rate would be ideal for this filter, related linearity?
@Jason Stoddard
OS
NOS 44.1kHz
48kHz