Miss Autogena’s Sound Mirror Marc Abrahams 22 years ago Last year’s press release about Miss Autogena’s sound mirror can be read here. Technical details can be seen here. A not-entirely-related picture of someone breathing into a tube can be seen here. Share this: Share on Facebook (Opens in new window) Facebook Share on LinkedIn (Opens in new window) LinkedIn Share on Mastodon (Opens in new window) Mastodon Share on Bluesky (Opens in new window) Bluesky
