User guide

Front Panel Elements (connued...)

CHORD MODE BUTTON - this buon, when pressed, toggles the CHORD mode on and o. When CHORD

mode is acve, 8 detuned copies of oscillator 1 are running. These copies are shied in relave pitch in

musical intervals to produce chords. There are 64 dierent chords that are available. When the CHORD

mode is turned on, the upper row of the display will indicated the currently selected chord type. This

selecon can be changed with the rotary encoder.

FOLD POTENTIOMETER - this potenometer sets the amount of folding imposed by the waveform

folder. As this control is part of the analog waveform folder circuitry its seng is not shown on the LCD

display.

PERC MODE BUTTON - this buon, when pressed, toggles the PERCUSSION mode on and o. When this

mode is acve output 1 is passed through a digital amplier whose gain is controlled by a simple enve-

lope. The envelope has a very sharp aack and an exponenal decay. The decay rate is determined by

the DECAY parameter seng. The envelope is triggered by posive-going pulses received at the external

sync input jack.

SHAPE 1 POTENTIOMETERS - this potenometer selects the waveform for oscillator 1 from the 8 wave-

forms in the currently selected wave bank. There is a smooth interpolaon between the waveforms.

This seng is summed with the external SHAPE 2 modulaon input to provide the actual selecon.

LFO MODE BUTTON and LFO 1,2 LEDs - this buon, when pressed, cycles through the enabling of LFO

mode for oscillators 1 and 2. The rst buon press turns on LFO mode for oscillator 2 only. The second

buon press turns on LFO mode for oscillator 1 only, the third buon press enables LFO mode for both

oscillators, and the fourth buon presses turns o LFO mode for both oscillators. In LFO mode the pitch

of the oscillator is dropped by 7 octaves (frequency is divided by 128). When LFO mode is enabled for

oscillator 2 and quanzaon is o, the pitch of oscillator 2 is no longer aected by the COARSE and FINE

knobs. It is only aected by the PITCH 2 input and the RATIO control and input in this situaon.

OUTPUT JACKS - the four rightmost jacks in the boom row are used to output the following signals:

OUT1: outputs the oscillator 1 waveform aer passing it through the nonlinear combinaon

process and the echo/delay eect. The signal is internally generated at 25MHz but is downsampled to

98KHz before passing through a DIgital to Analog converter.

OUT 2: outputs the oscillator 2 waveform. The signal is internally generated at 25MHz but is

downsampled to 98KHz before passing through a DIgital to Analog converter.

PULSE: outputs a two-level signal (0-5V) derived from the oscillator 1 or oscillator 2 waveforms

(the specic output depends on the parcular PULSE mode selected).

FOLD: this is the output of the analog wavefolder.

PULSE/LFO 2 LED - this LED indicates whether the PULSE output is high (5 volts) or low (0 volts). When

oscillator 2 is operang in LFO mode, this LED no longer displays the PULSE output value, but instead

indicates the sign of output 2 (i.e. the LED is illuminated whenever output 2 is posive).