It is extremely simple to look at it in software such as RX and observe the frequencies. Hiss? I’d call it surface noise, distinguished from tape hiss. But that is a quibble. A studio owner I work for occasionally still calls tape hiss “surface noise.” Lou Judson Intuitive Audio 415-883-2689 On Jun 25, 2018, at 7:36 PM, Tim Gillett <[log in to unmask]> wrote: > Of course part of the problem is there's so much higher frequency background hiss it's easy to be fooled into thinking the program extends that far up as well. > > After declicking I would be listening to the content (not to the noise but through the noise) to gauge the upper limit, at a rough guess around 3kHz for an acoustic recording. I sometimes run a low pass filter from high to low to judge by ear when it starts eating into the content's highs. The same for the lows of course. > > Tim. > > ----- Original Message ----- From: "Steve Smolian" <[log in to unmask]> > To: <[log in to unmask]> > Sent: Tuesday, June 26, 2018 9:38 AM > Subject: [ARSCLIST] Acoustic frequency range > > >> Has anyone measured the frequency range of acoustic records?