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"I am very pleased with the overall results of all three transfers. The "Hall of Presidents" and "Country Bear Jamboree" transfers were outstanding, with almost no hiss or pop. The "Tiki Room/Jungle Cruise" soundtrack had some minor hissing in the first couple of tracks, but side 2 was superlative. Given that that album was over thirty years ..."

Speed of sound in air

770 mi/hr. Velocity of sound in the open is influenced by air temperature more than by atmospheric pressure. At 21 degrees C, speed is 344 m/sec (1,100 ft/sec); at 50 degrees C, 360 4m/sec, or 42 ft/sec faster.