finneybear
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- Jan 22, 2019
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When nothing is playing, maybe. With the presence of a signal there is quantization noise, with 24 bits playing -144dB down is best case scenario.
Nope. You are confused by what a FFT chart means. The noise floor here is the FFT floor. It is the frequency components of the original noise. In other words, you have to add all these up for the real noise floor.
Machines like AP use ADC to convert signal to digital data before going to FFT. The conversion errors have a big impact on the accuracy for low level frequency components hence the FFT gain people are talking about. Then there are a lot of DSP stuff involved which is way beyond the scope of discussion here.