Concerned experts from France, Great Britain, The Netherlands, Italy and Germany met in London last week. Their concern : the A above middle C. This A is the note by whose pitch instruments and orchestras are tuned. In the U. S. since 1918 it has been jealously maintained at 440 vibrations per second, but everywhere else the International Broadcasting Union has found "a constant and regrettable tendency to increase the frequency." After due deliberation the conferees agreed that the U. S. frequency should be adopted as standard for the world.
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