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Tempered Scale Generation from a Single Frequency Source

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With the development of low-cost high-speed MOS circuitry, it is currently possible to overcome the cost and tuning deficiencies of the conventional twelve-oscillator organ frequency generator by employing a generator comprising a single high-frequency master oscillator in conjunction with various digital calculating systems. A recent comprehensive study of three such systems indicates that only one has high purity of tone combined with pitch accuracy for tempered scale generation.

JAES Volume 20 Issue 5 pp. 376-382; June 1972
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AES - Audio Engineering Society