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Amplitude and Brightness

CONTOUR (cont’d)

With

SUSTAIN

set to Full clockwise,

SUSTAIN

maximum, but with no audible

DECAY

, as the

circuit remains at the Maximum level.

Figure 53

a 3 Stage function, operating as an

ASR

, or

Attack

Sustain Release

envelope. Many older electronic

organs utilized this type of Amplitude control.

With

SUSTAIN

settings anywhere between

Minimum and Maximum, the

CONTOUR

generates

a 4-Stage function that, when used to drive the

DYNAMICS

circuit, produces the classic

“ADSR,”

Attack, Decay, Sustain Release

Amplitude

Envelope, as popularized by the East Coast

Synthesis technology

(Figure 54).

Vari-Response

shapes these rates of change (i.e.

ONSET/ DECAY

) to be Linear, Exponential, and

everything inbetween. With

EXPO

response, the

rate of change INCREASES as the voltage

INCREASES. With a

LINEAR

response, there is no

change in rate when the voltage is changing . The

Vari-Response

control may be used to increase or

decrease the overall time or speed of the

CONTOUR

. Setting

Vari-Response

Clockwise in order to be more Exponential

increases the rate, causing the 0-COAST to sound

more percussive. Setting it to be more LINEAR

decreases the rate, causing the 0-COAST to fade in

and out of existence.

Experiment with different

ONSET

and

DECAY

settings, while leaving

SUSTAIN

set to about 11

o’clock, and Vari-Response set to 2 o’clock. This

may help you understand what

ONSET

and

DECAY

are doing. Now, set

ONSET

to 9 o’ clock, and

DECAY

to 3 o’ Clock, while experimenting with

different

SUSTAIN

settings. Finally, experiment

with different

Vari-Response

settings using the

Panel Controls to change the shape and rate of the

CONTOUR

(ONSET)

ATTACK

(DECAY)

RELEASE

SUSTAIN

ONSET (Attack) Sustain DECAY (Release) (ASR):

Once the Gate is received at the CONTOUR GATE

Input, the FUNCTION Rises at a Rate and Shape set by the ONSET and VARI-RESPONSE Panel Controls

and increases until it hits its maximum value of 8V. Next, the SUSTAIN circuits alter the Function

according to the SUSTAIN Panel Control. Finally, the Function “Releases” back to 0V at a Rate and

Slope determined by the DECAY and Vari-Response Panel Controls.

Time, in Seconds

+10V

Figure 53:

ATTACK

RELEASE

DECAY

Attack Decay Sustain Release (ADSR):

Once the Gate is received at the Contour GATE Input, the

FUNCTION Rises at a Rate and Shape set by the ONSET and Vari-Response Panel Controls and

increases until it hits its maximum value of 8V. Next, the Decay and Sustain circuits alter the

Function according to the Contour Circuit Panel Controls. Finally, the Function “Decays” back to 0V at

a Rate and Slope determined by the Vari-Response Panel Controls.

Time, in Seconds

+10V

Figure 54:

SUSTAIN

EXPONENTIAL

LINEAR

(ONSET)

(DECAY)

Содержание 0-Coast

Страница 1: ...5 19 16 REV 7 v 1 16...

Страница 2: ...CV Gate Controllers 10 ProGraM Buttons 11 ProGram B 12 Circuits that Modify 14 MIDI B 15 Signals 16 Attenuation 17 Attenuversion 18 Control Voltage 19 The Core 20 The Timbre 21 SLOPE 22 Balance 23 The...

Страница 3: ...te the equipment This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable pr...

Страница 4: ...by Make Noise to be the fault of the user are not covered by this warranty and normal service rates will apply During the warranty period any defective products will be repaired or replaced at the op...

Страница 5: ...r choice you could apply new timbres to your existing musical forms Using the included Patch Cables you could get more scientific experimenting with new ways to wire up the circuits You might even for...

Страница 6: ...l also find small visual representations of the connections Continuing the example above SCOPE NOTATIONS Circuit Output Circuit Input Oscillator Square Wave Output Balance External Input Number of Cyc...

Страница 7: ...olarity MIDI Activity or indicate alternate modes for instance Self Cycle Jacks Every jack in the 0 Coast is either an input or an output Jacks are patched together with cables Simply plug one end of...

Страница 8: ...put 25 Overtone Panel Control 26 Overtone CV INput Attenuator 27 Multiply Panel Control 28 Multiply CV Input Attenuvertor 29 Multiply Activity Window orange 30 Overtone CV INput 31 Multiply CV INput 3...

Страница 9: ...8 Figure 8 Default Sound Figure 9 Drone...

Страница 10: ...without significant interference from other electronic sources such as computers appliances radio waves etc Most importantly however high amplitude signals allow for modulation across the entire range...

Страница 11: ...e section at bottom of page or at the bottom of the unit If you will be using a CV Gate controller locate the Pitch CV and Gate CV OUTputs on this device Connect the Pitch CV Output from the controlle...

Страница 12: ...ut can be assigned to velocity note number mod wheel et al The 0 Coast also has a fun arpeggiator with two modes an additional LFO at the MIDI B outputs and the ability to switch between Legato and Re...

Страница 13: ...Legato ON default MIDI A Gate goes high when the first note on is received and does not go low until all note offs have been received In other words there is a single Contour until all notes are relea...

Страница 14: ...FO TAP PGM_ A This is a square wave LFO with User defined frequency 6 MIDI Clock PGM_A FLASHES PGM_B OFF default PGM_B ON ON Tempo follows the rate of the incoming MIDI clock 7 Calibrate MIDI_A MIDI_B...

Страница 15: ...Jack such as the Korg SQ1 Sequencer or the Electribe 2 Simply connect the two devices using a Stereo TRS Mini Jack cable as depicted in Figure 15 To use the 0 COAST with traditional DIN devices use th...

Страница 16: ...hed to the CONTOUR Gate IN and DYNAMICS CV INput Jacks the CONTOUR Signal OUT is wired to modulate DYNAMICS In order to hear this set 0 COAST to the Default Sound Figure 8 Page 8 and play some keys or...

Страница 17: ...V Figure 20 An Audio Rate Triangle Wave 5V 6 KHZ G8 One Cycle 0 166 mS CV Random Voltage Random Voltage as you might have expected is not predictable In a more subtle use Random Voltage can liven up a...

Страница 18: ...e Fully Attenuated 0V 10V 0V Time Inversion To invert a signal is simply to turn it upside down For example inverting a 5V offset results in a 5V offset Inverting a positive going sequence Fig 28 resu...

Страница 19: ...ugh at all times As mentioned above in 1 the left input is always at Unity there is no control over its amplitude while the right input comes with an attenuverter An example of the usefulness of inver...

Страница 20: ...range of movement is indicated by the crosshatched area of the MULTIPLY Panel Control Figure 35 With the MULTIPLY INput Attenuverter set to 12 o clock no voltage is added to the MULTIPLY Panel Contro...

Страница 21: ...orm which has many audible Odd Overtones making it more rough and complex This gives it a hollow aggressive sound The Square waveform is often used as the starting point for East Coast synthesis techn...

Страница 22: ...To hear the SLOPE in the audio signal path set SLOPE to CYCLE and set RISE and FALL to 9 o Clock for Audio rate SLOPE generation Set OVERTONE Full CW This will create a very inharmonic sound not unlik...

Страница 23: ...til the the CYCLE Button is PRESSED again to disengage Self CYCLE This type of Function is often called a Low Frequency Oscillator or LFO an important element of both EAST and WEST Coast synthesis tec...

Страница 24: ...ugh sound rich in harmonics This is not unlike sweeping a Low Pass Filter in the classic East Coast synthesis patch where at Full Counterclockwise the harmonics of the Square or Saw waveform are reduc...

Страница 25: ...t synthesis at its finest allowing the Low Pass Gate to be used in tandem with an extremely important East Coast synthesis circuit the 4 stage Envelope we call CONTOUR CONTOUR In order to really under...

Страница 26: ...here it remains for as long as the Gate e g from MIDI or Patched to CONTOUR Gate INput is held HIGH or ON Figure 50 The SUSTAIN parameter determines this maximum level while DECAY sets the time it tak...

Страница 27: ...ent ONSET and DECAY settings while leaving SUSTAIN set to about 11 o clock and Vari Response set to 2 o clock This may help you understand what ONSET and DECAY are doing Now set ONSET to 9 o clock and...

Страница 28: ...y be used when interfacing the 0 COAST with instruments capable of handling the large voltages produced by this type of output such as modular synthesizers The LINE OUT circuit has a Level parameter w...

Страница 29: ...t typical sounds played with a keyboard are easy to achieve an example of a limitation is that the envelope of a note created by Contour as Gated from the MIDI A Gate is always tied to a single pitch...

Страница 30: ...hich the Modulation will be added If it is already at maximum it cannot be modulated any further When Panel Control is set to 12 o Clock and the CV Attenuator is set Full CCW there will also be no Mod...

Страница 31: ...ency of one oscillator upon another The result is that the oscillator that is FM d will carry the modulating oscillator s pitch information in the form of harmonics Linear FM attempts to preserve the...

Страница 32: ...OPE Function aka Envelope whose characteristics are defined by the RISE FALL and Vari Response parameters This function will rise from 0V to 8V and then immediately fall from 8V to 0V There is NO SUST...

Страница 33: ...ultiply is controlled by SLOPE in normal operation Try taking MIDI B CV patched to this input set to C3 to accomplish something similar to Keyboard tracking found on subtractive monosynths in the East...

Страница 34: ...xed Summed together The result appears identically at both outputs at the bottom The left input CHannel 1 is always at Unity there is no control over its Level or polarity while the right input CHanne...

Страница 35: ...vels may be used to control the 0 Coast and vice versa EXAMPLES Sequence the 0 Coast with Ren or Korg Arturia sequencers process the 0 Coast s DYNaMiC output in the Make Noise System 0 Figure 70 The 0...

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