asdf1000 Posted June 7, 2019 Share Posted June 7, 2019 8 minutes ago, marce said: We can measure far more than we can hear, where do these measurements down to -140db come from. Record different instruments and look at the results, waveforms, fft's showing frequency content etc. you can see a difference. https://phys.org/news/2013-02-human-fourier-uncertainty-principle.html Link to comment
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