| Greetings to all! I am thrilled to report that January 29, 2026 marked the eleven year anniversary of my monotoSTEREO.info website! I had started the website to provide a collection of resources for individuals interested in upmixing older mono (monaural) source material to stereo through the use of spectral editing and music source separation. For many years one of the holy grails of the audio world has been the ability to convert mono musical source material to realistic stereo. Unfortunately, numerous attempts over the years invariably produced very poor results. 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 monotoSTEREO.info went live. Since then, the website has been visited over 94,000 times by individuals in 195 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 links to hundreds of examples of mono recordings that have been upmixed to stereo using this technology, a number of which have been released commercially: Links to commercially available releases which utilize this technology can be found here: There are now a total of 129 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 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! You can also follow the Bluesky profile for the website at: https://bsky.app/profile/mono2stereo.bsky.social I’d like to take this opportunity to thank everyone who has visited, and continues to visit, the website! It is my sincere hope that you find the website useful, interesting, and inspirational! Best regards, Christopher Kissel Owner & Webmaster of monotoSTEREO.info |