Sapientiam
500+ Head-Fier
- Joined
- Aug 16, 2009
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How about to post FFT result, let customer see if it is that low level.
Once using that noisy power source, it is really difficult to achieve -118dB SNR. For my design, it can go deep to -140db@1k further(fully tested). Just one bulk more.
That figure of -140dB is not a noise spec, its read off an FFT. When reading from an FFT you do need to take account of the bin bandwidth which is much, much narrower than the full audio bandwidth.