MIDI IN­STRU­MENTS

Maximum PC - - R&D -

If you have a MIDI key­board, adding the MIDI to CV mod­ule is a must—it en­ables you to use the notes of key­board keys (1V/Oct), their ve­loc­ity, and (if your key­board sup­ports it) af­ter­touch, as well as the mod­u­la­tion and pitch wheels to con­trol any­thing with an in­put. This could be as sim­ple as wiring the key­board’s 1V/Oct out­put to the V/Oct in­put of a VCO, or far more com­plex—mod­u­lar synths are all about ex­plo­ration and ex­per­i­men­ta­tion, so it’s up to you to find a sound you love.

If you don’t have a MIDI key­board, you can still get a lit­tle more in­ter­ac­tive with your in­stru­ments. Down­load and in­stall Vir­tual MIDI Pi­ano Key­board from http://vmpk.source­forge. net, and MIDI OX and MIDI Yoke from http://mid­iox.com, and set VMKB’s out­put to MIDI Yoke. Add a MIDI to CV mod­ule to your synth, set its in­ter­face to the ap­pro­pri­ate in­put, wire its 1V/Oct port to some­thing in­ter­est­ing, and use the keys on your com­puter key­board to play. Bear in mind that the other MIDI out­puts are use­less if play­ing this way, be­cause your vir­tual key­board is limited to straight on/off volt­ages. 5 PULSES ON PULSES The LFO is giv­ing char­ac­ter to your sound, but a se­quencer turns your synth from a drone into a rhyth­mic ma­chine. Add “Fun­da­men­tals > SEQ-3” to your rack, and try not to be too in­tim­i­dated—it’s a fairly sim­ple con­trap­tion. Each row out­put sends a sig­nal, de­ter­mined by each row of knobs, when the clock (rep­re­sented by the flash­ing green light along the bot­tom) passes them. Wire the “Row 1” out­put to the “Exp” in­put of the VCA, then patch the square wave out­put of your LFO to the ex­ter­nal clock in­put of the se­quencer. Now, turn knobs 1, 3, 5, and 7 to full—you’ll hear your note puls­ing on and off with ev­ery beat. Add an­other se­quencer, patch the gate out­put of the orig­i­nal into the ex­ter­nal clock in­put of the new one to sync them up, then fire its row 1 into the V/Oct in­put [ Im­age E] of the first VCO-1 in­stru­ment we added. You can now use the knobs to con­trol the note played on each beat. 6 MAK­ING CHOICES Hav­ing mul­ti­ple rows means we can use se­quences longer than just eight beats. Add a Se­quen­tial Switch 2, and patch each of the row out­puts from your sec­ond se­quencer to a sep­a­rate one of its in­puts. Wire the fi­nal gate out­put of the se­quencer to the switch’s clock in­put, and set the multi po­si­tion “2:3:4” switch to 3—you should see the green light on it step be­tween each of your three in­puts. Now wire the out­put of the se­quen­tial switch to your VCO’s V/Oct in­put [ Im­age F], and en­joy three rows of note se­lec­tion.

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