A man picking out Old Black Joe on the piano is a man having a mildly good time. But he would be having a better time if he were extracting great ranges of dynamics and tone color from his instrument. To make amateurs feel like virtuosos has been, in recent years, one great object of U. S. electrical engineers. Six years ago Radio Engineer Benjamin Franklin Miessner patented an electronic piano, in which pickups and a loudspeaker do the work of a sounding board and make amateurs dynamic enough to bring in the neighbors....
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