Polyphony and monophony in instruments harpejji and the Chapman stick). Multiphonics can be used with many regular wind instruments to produce two or more notes at once, although this is considered an extended technique. Explicitly polyphonic wind instruments are relatively rare, but do exist. The standard harmonica can easily produce several notes at once. Multichambered ocarinas are manufactured in a number of varieties, including double, triple, and quadruple ocarinas, which use multiple chambers to extend the ocarina's otherwise limited range, but also enable the musician to play more than one note simultaneously. Harmonic ocarinas are specifically designed for polyphony, and in these instruments the range
Owned-and-operated television stations in the United States is now owned by Deerfield Media under a local marketing agreement with Sinclair Broadcast Group); KTXH (channel 20) in Houston and WDCA (channel 20) in Washington, D.C. were sold to Fox Television Stations that same year (as part of the aforementioned swap with KBHK, both are now owned-and-operated stations of MyNetworkTV). In 2005, WNDY-TV (channel 23) in Indianapolis and WWHO (channel 53) in Columbus were sold to LIN TV; in 2006, KAUT-TV (channel 43) in Oklahoma City was sold to The New York Times Company (which later sold its entire television group to Local TV, which in turn was subsequently