And in April 1981-seven years after the start of development-Yamaha released its first FM tone generator product in the F-70, a classic Electone model. As further advances were made in the field of semiconductors, we finally achieved an instrument with specifications we considered acceptable. Unfortunately, it was not yet possible to bring this instrument to market due to the huge number of integrated circuits required by the semiconductor technologies of the time, and also because of the difficulty experienced in balancing size and function satisfactorily. Our research team started working with FM tone generators as part of a scheme to switch over the Electone® to digital technologies, and by 1974-when the analog SY-1 Yamaha synth was released-we had already successfully completed a prototype instrument with a digital FM tone generator at its core. This sound creation method was originally developed at Stanford University in the United States, and Yamaha-the first company to recognize its true potential-signed an exclusive licensing contract with the university in 1973. One of the more notable technologies made commercially viable by these rapid advances was the digital frequency-modulation (FM) tone generator. The breakthroughs made in the field of semiconductors during those years were truly remarkable.
Terms such as "integrated circuit" and "large scale integration" began to show up on university entrance exams, and companies started producing electronic games based on this type of circuitry. The start of the 1980s saw an explosion in the popularity of semiconductor-based electronic components, and devices that simply had not been possible with earlier technologies started appearing on the market in rapid succession. Chowning, of Stanford University, using a GS1 voice programmer to create sounds Testing FM tone generation at Standard University in the USAĭr.
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