Greg Weaver of the audio analyst and I have been working to extend our readers/viewers understanding of DSD at all levels, including the use of DSD256 in the production of LPs, such as Mobile Fidelity has been doing for a number of years now. Other companies like ABKCO have done the same in projects like their DSD64-to-LP reissues of the ABKCO Rolling Stones LPs back in the early 2000s (11 LP set).
In this YouTube video below, Greg interviews Andreas Koch of Playback Designs about DSD. There will likely be a second installment in the near future.
I highly recommend that you check out this very informative interview, since Andreas is one of the key figures in the development of DSD going back to the early 1990s, and is a real master of the mathematics and engineering challenges involved.
Watch...and learn!
Dr. David W. Robinson, Editor-in-Chief, Positive Feedback
Greg Weaver's introduction:
"Given the enthusiastic interest expressed in the content of the lengthy and detailed discussion on the history and promise of DSD presented by Dr. David W. Robinson in my YouTube Channel Episode 87, first released on September 11th of this year (see second YouTube link at the bottom of this article to view it), we felt it only made sense to offer more content along those lines.
Arrangements were made to present a series of discussions with Andreas Koch, the man who has the distinction of having been a member of, or the leader, of the design teams for the world's first digital tape recorders at Studer ReVox in Switzerland in the early 1980s, the first digital multichannel hard disk recorder, the creation of the SACD format at Sony, the world’s first multichannel DSD recorder and editor for professional recording, the Sony Sonoma workstation, and who has worked on proprietary DSD processing algorithms for converting PCM to DSD and DSD to PCM, as well as many other technologies for Digital to Analog conversion and clock jitter control in DACs.
In 2008, he launched Playback Designs, introducing their first product, an integrated SACD/CD player with a variety of digital inputs that incorporates all the experience, knowledge and algorithms he had developed and found to be effective over his 25 years of engineering research, right from the onset of digital audio.
I can think of no one in the industry more suited to bring us up to speed on the history and promise of digital recording. Here is the first of those discussions. I hope you find it as engaging and interesting as we have."
Greg Weaver and Dr. David W. Robinson enjoying the moment! (Photographer unknown...but a friend.)
For those of you wishing to see the extended YouTube interview of Greg discussing DSD with me a couple of episodes back, you'll find it at:
Don't let the 1.5 hour length of the discussion in this bottom video put you off. Watch it in several sessions at need...but it helps to lay the foundation for Greg's excellent interview with Andreas.