Assumption-Academic t1_j5rny97 wrote
No, at best you can hear 20 k if it's super loud, at BEST. It's just stupid marketing, like they measured and the headphones could also hit 75 k so they were like yea why not write that on the box, hell dude your DAC even integrated sound is very likely to have a cutoff around 20 k. So yea.
Raephstel t1_j5s3d2q wrote
I wonder how much digitally stored music has frequencies over 20k. It seems like a total waste of storage space.
lr_science t1_j5tki3g wrote
the technical limit is 1/2 the rate of the audio file in an uncompressed file. thus, a wav with 44.1 kHz can store frequency information of up to 22.05 kHz. You may thus argue that about 10% is wasted in those files.
AnOldMoth t1_j5toxr9 wrote
It's not wasted, it's used for the low-pass filter that is a crucial part off the digital to analog conversion process. If you don't use a low-pass, ultrasonic information left behind will ripple back into the audible band and distort it.
lr_science t1_j5uqkhh wrote
interesting, thanks!
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