Thank you! I appreciate the comments here, I'll work on doing more...

Thanks for letting me know-glad it as helpful to you!

Thanks!

Thanks for saying. There are examples in my other video on dither: kzbin.info/www/bejne/gXTccmmCoadmd9U

Thank you Sergio!

Thank you, much appreciated

Thanks!

Thanks you!

Click "show more", in the info above to get a little more detail, and a full explanation of the signal is at www.earlevel.com/main/2013/03/24/perspective-on-dither. The signal is a digital square wave, you can see the harmonics sweep down in the scrolling spectrogram. Two main reasons why I went with a digital square wave over sine sweeps: First, I want it to be easier to hear-I'm not trying to MAKE it difficult to hear, I want the listener to have a sense that this easy-to-hear signal becomes difficult to hear sooner than they might have thought. Second, a sine would have progressively worse signal-to-noise ratio, and require dithering, whereas the digital square sweep is alway exact at any bit depth. Thanks for being the first comment!

It shows you effectively how low the noise floor is, based off 0 dbfs. For example, 16-bit at -90.3 dBFS means you could set your speakers to play at 90.3 dB above the noise floor (in a very quiet room say 30 dB). This would mean the loudest parts would be 120.3 dB (painfully loud, most home audio or headphones won’t get close to this) with the noise floor effectively inaudible. The demo shows that anything above 16-bit for playback is kinda pointless however higher bit depths are very useful in mixing and mastering the final output. Gives you extra headroom before bringing the final output down to a more reasonable 16 bits per sample.

I couldn't find that paper, but thanks!

Thank you so much, it helps to know-be sure to subscribe if you haven't so you don't miss my (long delayed, but I won't let another year go by) intuitive explanation of sampling theory...

Thanks! You should be able to reach the website at earlevel.com...it's probably because the link has "http", from back before the site was secure-only. I'll update it...

Thanks, I appreciate you saying!

Thanks, David

Appreciate it, Svein

oh, self dither, so it seems to me dither is only for electronic or direct imput instrument recordings...

@@TEN-TIMES-HARDER It never hurts to dither 24-bit truncations, but it also won't even be heard. Now, some would say, "why not just said always dither, and make it easy on everyone?". The reason I make this point is because some feel that every external send in your DAW (out to a hardware reverb, compressor, tube EQ...) must be properly dithered or you project will be ruin. This is an unnecessary complication-besides the extra setup, there is the paranoia of making sure there are no further gain changes after the truncation, etc. And it's for something that impossible to hear. The truncation distortion of at 24 bits is far below the noise floor of any electronics possible (you can't escape Johnson noise and shot noise). If that weren't enough-for people who aren't electrical engineers, and doubt that fundamental truth-your ears can't hear it (people get fooled by reading that the ear has 140 dB of dynamic range-they forget that you will have permanent hearing damage if you exercise that extreme for even a few seconds on the loud end, and on the other end you're limited by the inherent noise in your room, noise of blood pumping through your veins, and the minimum energy required to deflect your eardrum (it's not massless). If that were enough, only the most artificial cases of computed music won't already have far more than enough of a noise floor to self-dither, as you say. The bottom line is that it's unhearable for several fundamental reasons.

Watch it one more time :-D

Short version: Limited resolution (sample size) results in a grid of possible values. The grid can possibly result in patterns in certain audio material that sound like the audio is distorted. By jiggling the grid a tiny bit, randomly, we don't get error patterns that line up with the audio signal-instead of a distorted signal, it sounds like the clean signal plus a tiny bit of hiss. Analogy: Close one eye and spread your fingers in front of your view, and read this. Your fingers will block some words. Jiggle your hand side to side, quickly, a small amount. Now you can read all the words, even though there is a little blur in front of them. The blur is better than the blocking.

Glad it helped, and thanks for letting me know!

Thank you-I do appreciate it.

Thanks!

Much thanks, Morris

Appreciate the feedback!

Thanks!