+- MacResource (https://forums.macresource.com)
+-- Forum: My Category (https://forums.macresource.com/forumdisplay.php?fid=1)
+--- Forum: Tips and Deals (https://forums.macresource.com/forumdisplay.php?fid=3)
+--- Thread: raise you hand if you can still hear 40Khz (/showthread.php?tid=262059)
raise you hand if you can still hear 40Khz - Fritz - 11-30-2021
even your dog will love your music.
Re: raise you hand if you can still hear 40Khz - MrNoBody - 11-30-2021
That would be a no, thank you U.S. Army!
Re: raise you hand if you can still hear 40Khz - cbelt3 - 11-30-2021
long gone....
Re: raise you hand if you can still hear 40Khz - pdq - 11-30-2021
Yeah, not even close any more. Maybe 16 kHz.
I discovered another surprising thing a couple years ago when I made a big-ass horn-loaded subwoofer and was disappointed upon listening tests (with a sine-wave source) that it started to fade at 40 Hz and was inaudible below around 35 Hz. It was supposed to do better than that.
Sometime later, I got a nice reference calibrated microphone and used it with a free program (REW). Much to my surprise, I learned that the sub was indeed cranking out to 20 Hz (and a bit below, with rolloff), which remained inaudible to me.
Sometimes the problem is your ears (or between them).
Re: raise you hand if you can still hear 40Khz - DP - 11-30-2021
Cranking it with some power, even if you can't hear it anymore, you should be able to feel it!
Re: raise you hand if you can still hear 40Khz - voodoopenguin - 11-30-2021
Many years ago I had some recording equipment that made a thing of being able to deal with sounds well above and well below human hearing. The point was that when it was dealing with what was in human range it wasn't being stretched.
Paul
Re: raise you hand if you can still hear 40Khz - Fritz - 11-30-2021
voodoopenguin wrote:
Many years ago I had some recording equipment that made a thing of being able to deal with sounds well above and well below human hearing. The point was that when it was dealing with what was in human range it wasn't being stretched.
Paul
scientifically true, but I've not been able to prove it.
qualitative.
Re: raise you hand if you can still hear 40Khz - Spiff - 11-30-2021
Just did a youtube search for 40khz sound. Found a 10 minute clip. At normal audio levels, I hear nothing in my office (street noise outside and ticking pocket watches in the background). Cranking up the noise to 80% max, I can hear a high pitched whine. Is that the 40hz or just feedback from my speakers? I've got pretty good desktop speakers (audioengine A2s with ARCAM DAC attached to computer).
Re: raise you hand if you can still hear 40Khz - Fritz - 11-30-2021
it is very rare that any human can hear above 16k let alone 20k or 40k. That's not to say that none can.
I used to work with a very accomplished and famous mixer what would have me "tweak" the playback head on the multitrack a 1/4db.
While he was an incredible mixer, that, to me, was show n tell.
Re: raise you hand if you can still hear 40Khz - Grateful11 - 11-30-2021
Never could.