I've enclosed my solution to the Data-to-Music problem. It uses the top-octave kit, a couple of Data Selectors and an 8-bit Binary Divider. With it, a 7-bit binary number can produce any equally-tempered note in a 7-octave range. By multiplexing the input data at a rate well above audio levels, Polyphony can be simulated. By using the circuit with a PLL circuit, intermediate tones, portamento, and other FM effects can be produced. Unfortunately, I have not found any decent info anywhere on using the CD4046 with the Top-Octave Generator.
But the best part of the circuit is it's simplicity and economy. The remaining data bit (in an 8-bit system) can be used for triggering envelope generators, so a quite advanced polyphonic system can be produced.
<ref name="mz8968-data-to-music-conversion">{{cite magazine|last=Fischer|first=Charles|date=Nov 1977|title=Data To Music Conversion|page=5|url=http://www.muzines.co.uk/articles/data-to-music-conversion/8968|magazine=Polyphony|publisher=Polyphony Publishing Company|location=United States|access-date=2025-02-07}}</ref>
{{cite magazine|last=Fischer|first=Charles|date=Nov 1977|title=Data To Music Conversion|page=5|url=http://www.muzines.co.uk/articles/data-to-music-conversion/8968|magazine=Polyphony|publisher=Polyphony Publishing Company|location=United States|access-date=2025-02-07}}
<ref name="mz8968-data-to-music-conversion">{{cite magazine | last = Fischer | first = Charles | date = Nov 1977 | title = Data To Music Conversion | page = 5 | url = http://www.muzines.co.uk/articles/data-to-music-conversion/8968 | magazine = Polyphony | publisher = Polyphony Publishing Company | location = United States | access-date = 2025-02-07}}</ref>
{{cite magazine | last = Fischer | first = Charles | date = Nov 1977 | title = Data To Music Conversion | page = 5 | url = http://www.muzines.co.uk/articles/data-to-music-conversion/8968 | magazine = Polyphony | publisher = Polyphony Publishing Company | location = United States | access-date = 2025-02-07}}
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