Greetings!
For many years it was considered impossible to
realistically convert mono musical source material to stereo.
In fact, consider this statement in the Third Edition of
The New Stereo Soundbook by Ron
Streicher & F. Alton Everest (2006 Audio Engineering
Associates), undoubtably one of the most authoritative books
published on the subject of stereo sound:
“The most important point in studying the various
methods of converting a mono signal to stereo is the
realization that it is impossible to do so: the best that
can be hoped for is a signal that has some of the
characteristics of a stereo signal.”
On January 29, 2015 my website,
monotoSTEREO.info, went live. I started the website to
provide a collection of resources for individuals interested
in upmixing older mono source material to stereo through the
use of spectral editing and audio (sound) source separation...
more specifically, music source separation. In that time the
website has been visited over 66,000 times by individuals in
185 countries!
The goal of this technology is the creating of stereo mixes
that are virtually indistinguishable from stereo mixes created
using multitrack session tapes, had they existed.
There are now several hundred examples mono recordings that
have been upmixed to stereo using this technology which have
been linked to on the MEDIA pages of the website. A number of
these have been released commercially:
Links to commercially available releases which utilize this
technology can be found here:
There are now a total of 106 tools featured on the TOOLS
pages of the website, which are accessible from the pull-down
menus anywhere on the website:
More tools continue to be added, including web-based
services and even music source separation apps that run on iOS
and Android devices!
There are now over 1,700 research papers, presentations,
etc. linked to on the
RESEARCH pages of the website!
A companion
Facebook page for the website
provides updates and related content. Be sure to “Like” the
Facebook page to follow it for
the updates!
I’d like to take this opportunity to again thank the
engineers who have been showcasing what is possible with this
technology. I must also thank the various researchers and
developers who have made this technology accessible, powerful,
and useable for so many. The technology and the tools to
utilize it continue to improve dramatically! Lastly, a big
thank you to the visitors to the website. Your continued
interest and support are very much appreciated! I sincerely
hope that you continue to find the website interesting,
informative, educational, and inspiring!
Best regards,
Christopher Kissel