[sdiy] 12 bit quantization noise, dithering, synths

[brianw]

All of these papers are available at AES.org in their publications section. There is a fee for non-members, but I joined the Audio Engineering Society years ago, and members can download these papers for free. There is even a student price for membership. If you don't join, there are still some places on the internet that have some of these papers for free download, but you'll have to search those out yourself. I verified that all of them can be found at AES.org using the title of the paper alone.


Here's the one that I keep going back to for reference:

Quantization and Dither: A Theoretical Survey; Lipshitz, Stanley P.; Wannamaker, Robert A.; Vanderkooy, John; JAES Volume 40 Issue 5 pp. 355-375; May 1992


Other AES papers:

Psychoacoustic Noise-Shaped Improvements in CD and Other Linear Digital Media; Gerzon, Michael A.; Craven, Peter G.; Stuart, J. Robert; AES Paper Number: 3501, March 1, 1993


... including Chowning's on FM:

The Synthesis of Complex Audio Spectra by Means of Frequency Modulation; Chowning, John M.; JAES Volume 21 Issue 7 pp. 526-534; September 1973


... and my favorite "controversial" paper:

Why Professional 1-Bit Sigma-Delta Conversion is a Bad Idea; Lipshitz, Stanley P.; Vanderkooy, John; AES Paper Number: 5188; September 1, 2000.


Brian Willoughby
Sound Consulting


On Feb 12, 2023, at 11:57 AM, Mattias Rickardsson wrote:
> brian skrev:
> ...
> If you like, I can share links to some articles that talk about why the exact amplitude of the dither is important for removing audible quantization artifacts. These aren't easy papers to follow, though, unless you're really interested in the state of the art.
> 
> I'd appreciate a peek into those articles if you'd like to share. 
> Thanks for summing up some important points. :-)
> 
> /mr