Editing Tweeter (section)

==Range==
Most tweeters are designed to reproduce frequencies up to the formally defined upper limit of the human [[hearing range]] (typically listed as 20 kHz); some operate at frequencies up to approximately in between 2 kHz to 20 kHz. Tweeters with a greater upper range have been designed for psychoacoustic testing, for extended-range digital audio such as [[Super Audio CD]] intended for [[audiophile]]s, for biologists performing research on animal response to sounds, and for ambient sound systems in zoos. Ribbon tweeters have been made that can reproduce 80 kHz<ref>{{cite journal |url=https://books.google.com/books?id=yENMUzuisWwC&pg=RA1-PA97 |page=97 |title=Hearing in Flying-Foxes (Chiropterae: Pteropodidae) |journal=Australian Mammal Society |date=June 1987 |last=Calford |first=M. B.}}</ref> and even 100 kHz.<ref>{{cite web |url=http://www.patentstorm.us/patents/7031488/description.html |title=Super tweeter – US Patent 7031488 Description |access-date=2012-02-11 |url-status=dead |archive-url=https://web.archive.org/web/20110612104929/http://www.patentstorm.us/patents/7031488/description.html |archive-date=2011-06-12 }}</ref>