Audio synthesis via vacuum tubes/Keyboard controller for tube synthesizer: Difference between revisions
Audio synthesis via vacuum tubes/Keyboard controller for tube synthesizer (view source)
Revision as of 15:26, 9 June 2019
, 4 years agono edit summary
mNo edit summary |
No edit summary |
||
Line 6:
These problems do not apply directly to our tube synthesizer. Instead, we have a different problem: our very simple VCO is temperature-stable, but has a response that varies semi-randomly with the individual thyratron tube used. So, we not only have to use a non-linear divider on the keyboard; we have to use one that can be adjusted for the individual thyratron. If we want to use two or more VCOs in parallel, we have to match the thyratrons for pitch-to-voltage response curves.<ref name="cont" />
The Trautonium never had this problem--it used a [[ribbon controller]], with no fixed keys. We could always do that with our tube circuits. Refer to the classic [[Electronotes|Electronotes newsletter]] for a number of suitable circuits. However, if you insist on having an equally-tempered keyboard, we must use a divider made of trimpots.<ref name="cont" />
== How it works ==
| |||