Synth Glossary

Aftertouch:: A means of generating a control signal based on how much pressure is applied to the keys of a MIDI keyboard. Most instruments that support this do not have independent pressure sensing for all keys, but rather detect the overall pressure by means of a sensing strip running beneath the keys. Aftertouch may be used to control such functions as vibrato depth, filter brightness, loudness and so on....

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"Oberheim released the polyphonic and programmable OB-X in 1979. Available in four-, six-, and eight-voice configurations, it offered 32 program memories, polyphonic portamento, and polyphonic sample-and-hold."

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