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Index

14

Arpeggiator

Contents

Octave Extend

Produces cyclical upward transposition of
the arpeggiator output by one or more
octaves. The transpose amount is
automatically "stepped" by one octave
each time the arpeggiator completes a
scan of the captured chord in the current
scan direction. The captured chord is thus
effectively extended into additional higher
octaves as if the actual notes in the
captured chord had been duplicated in
those octaves. Setting Octave Extend to
zero disables it.

"Stepping" of the Octave Extend
transpose amount is always done in a
manner which is consistent with the
selected scan pattern. Assuming that
Octave Extend is enabled (i.e, it is set to
1 or higher):

- With Scan Pattern set to Forward,
output transpose is stepped upward by
one octave following each pass through
the captured chord until the until the scan
in the highest octave (as specified by
the Octave Extend setting) is complete.
Transpose is then reset to 0 and the
cycle repeats.

- With Scan Pattern set to Reverse,
output transpose is stepped downward
by one octave following each pass until
a scan with a transpose of 0 is complete.
Transpose is then reset to the highest
octave (as specified by the Octave
Extend
 setting) and the cycle repeats.

- With Scan Pattern set to Fwd-Rev,
the scan direction is not reversed upon
completion of a single forward scan of
the captured chord, as would normally
occur. Instead, output transpose is
stepped upward by one octave and
another forward scan is done. This
repeats until the forward scan in the
highest octave is complete – at this
point, the scan direction reverses and
the reverse scan is done, still in the
highest octave. Subsequently, output

Max Velocity: Adjustable between 1 and
127. This setting is effective only when
Velocity:Replace  is selected (see
above).

- When LFO Modulation (see below) is
set to zero, this setting 

directly specifies

the velocity of output notes, which is then
constant.

- Otherwise, it sets the maximum velocity
value which modulated output notes may
have. Modulation by the LFO results in
time-varying velocity values which are
lower than this maximum.

(By the way – the Max Velocity control is
another excellent candidate for
assignment to a MIDI controller.)

Summary of Contents for Noah Arpeggiator

Page 1: ...d Timing and Synchronization Slots Functions Big Buttons Group Standard Page Capture Mode Scan Mode Scan Pattern Auto Rescan Octave Extend Repeat SweepTranspose Note Dropout Rest Note Additional Page LFO Settings MIDI Keyboard Control OutputTiming MainTable of Contents Arpeggiator Tactive Instrument Modeller ...

Page 2: ...Arpeggiator is a highly dependable tool for bringing any relationship musical or non musical to a speedy end It s therefore also a sure fire vehicle for getting your solo career musical or non musical off to an early start But seriously No idea what an arpeggiator is In simplest terms it s a device which captures chords or short sequences of notes that you play into it and then scans the captured ...

Page 3: ...f note events The arpeggiator is monophonic It puts out one note at a time no overlapping notes and no chords MIDI Message Handling The handling of received MIDI messages depends on their type In general Received note on messages are captured in the chord buffer up to sixteen at any one time Received note off messages may or may not cause the matching note on messages to be removed from the chord ...

Page 4: ...icated to real time control of a selected set of arpeggiator functions via the MIDI input see Big Buttons Group MIDI Kbd Ctrl This permits these controls to be used more effectively in real time as the response via the MIDI keyboard in contrast to that of the corresponding graphical buttons is virtually instantaneous The numbers in parentheses next to various buttons on the surface indicate the MI...

Page 5: ...ote on and note off events it produces are aligned to these time increments Slots You can assign several instances of the Arpeggiator so that each slot can have its own Use the switches the number of which depends upon the operating mode Single Multi and the hardware version Noah Noah EX to select the desired instance for display and editing ...

Page 6: ...s a point by point description of the buttons and other controls on the arpeggiator surface The discussion here is broken down into sections which correspond to the organization of the surfaces pages Standard and Additional itself Standard Page Additional Page ...

Page 7: ...is the On Off button it alternately activates and deactivates the arpeggiator Stopping the arpeggiator clears the chord buffer and terminates the current output note if any Note that when the arpeggiator is not running it passes all received MIDI events directly through to its output and the other buttons in this group are disabled Clear Pressing this button empties the arpeggiator i e clears the ...

Page 8: ... Trans will instantly activate Hold see above if it is not already active thus freezing the chord buffer While Hold Trans is active the arpeggiator output can be live transposed up or down simple semitone transpose from the MIDI keyboard The transpose produced by playing any note on the keyboard is equal to the offset of this note relative to middle C MIDI 60 While Hold Trans is active the keyboar...

Page 9: ... modes the arpeggiator keeps track of the order in which captured notes arrived in addition to recording note number of course and velocity for each note Thus the use of both Note Number and Note Order scan modes is always possible regardless of the Capture Mode setting The capture mode setting can be changed at any time In some cases after doing this you may need to use Clear to empty the chord b...

Page 10: ...n reached The note capture limit can be set to any value between 2 and 16 notes and can be adjusted while the arpeggiator is running Scan Mode This control selects the basic method used to scan the captured chord and determine the next note to be played The currently selected scan pattern see below produces a specific variation on the selected scan mode The scan mode setting can be changed at any ...

Page 11: ... available when Random is selected sets the degree or range of randomness Random scan behaves differently under different Scan Mode settings If Scan Mode is set to Note Number then Random scan is basically a variation on normal Fwd Rev The scan proceeds in single steps from one note number to the next without skipping over any notes but reverses its direction at random With Depth set to minimum th...

Page 12: ...te which is played after all keys have been released e g the first note of a new chord will cause the counter to be reset whereas with New Notes every note which is played will cause the counter to be reset even if other keys are still being held down For example Using Normal capture mode you can hold down the keys of a chord and from time to time release individual keys or hold down new ones to m...

Page 13: ...elocity is selected the velocity values of the captured notes are ignored Instead output note velocity is determined by the following controls It is possible to switch back and forth freely between these two modes the actual captured notes are not affected in any way and the original velocity values are always available This has no influence over the captured notes whose original dynamics can alwa...

Page 14: ...erse output transpose is stepped downward by one octave following each pass until a scan with a transpose of 0 is complete Transpose is then reset to the highest octave as specified by the Octave Extend setting and the cycle repeats With Scan Pattern set to Fwd Rev the scan direction is not reversed upon completion of a single forward scan of the captured chord as would normally occur Instead outp...

Page 15: ...efore proceeding to scan the captured chord for a new note Repeat works with all scan modes and scan patterns Sweep Transpose This function can be used to produce a dynamically variable chord inversion style of upward transpose Progressively higher settings cause the currently lowest output note to be transposed upward by one or more full octaves so that it becomes the highest output note in effec...

Page 16: ...identical in their effect The Norm control is the one whose setting is normally applied The Alt control setting applies only while holding down the MIDI keyboard key assigned to the Note Dropout Alt function see MIDI Keyboard Control This can be used for a variety of effects The simplest one is to set the Norm control all the way to the right 100 dropout and the Alt control full left With these se...

Page 17: ...ce syncopated arpeggios in Note Order scan mode hint this is easiest with one of the Extend capture modes The Rest Note setting can be changed freely while the arpeggiator is running with the result that rests appear at diffe rent points in the output SettingRest Note to Off 128 disables the rest note function The scan mode can be switched to Note Number while the rest note function is active with...

Page 18: ...lied to note on velocity produces simple loud soft rhythmic accenting the Phase setting merely affects the positioning of this rhythm Finally the Phase setting has no effect upon the Random waveform which maintains a single constant but random value over the duration of each LFO waveform cycle Additional Page LFO Settings These settings control various parameters of the built in LFO which can be u...

Page 19: ...form jumps to the point determined by the Phase setting above There are four resync sources which can be enabled singly or in any combination A switch Resync LFO permits LFO resync enable disable without the need to enable disable the individual sources Internal This indicates an internal scan restart That is in the course of normal scanning the arpeggiator has once again returned to the start of ...

Page 20: ...uto ReScan is itself currently enabled Likewise the options affecting the restarting of this counter see Auto ReScan ReSync Ar Upon also remain in effect when Auto ReScan is disabled and thus affect the resynchronization of the LFO under this option New Note Chord When this source is enabled the LFO is resynchronized in response to activity on the MIDI keyboard i e whenever any new note is played ...

Page 21: ...s virtually instantaneous The MIDI Control Zone also contains two additionalfunctions ManualClockingand Note Dropout Alt The MIDI Control Zone includes the Ctrl Base key and the next seven keys above it see table following MIDI notes within this range are used exclusively for control of arpeggiator functions and are not captured in the arpeggiator chord buffer nor are they echoed to the arpeggiato...

Page 22: ... MIDI Control Zone is mapped into the active keyboard range it is possible to pre transpose incoming note events up or down by a full octave to permit a different range of notes to be used with the arpeggiator if desired For example with the MIDI Control Zone positioned at the left end of the keyboard setting Perf Note Transpose to 12 restores access to the notes in the lowest octave of the keyboa...

Page 23: ...synchronized arpeggiators are being used together connected to the same MIDI note source One arpeggiator is used with Offset set to 0 the other with a non zero Offset setting The se cond arpeggiator produces output whose timing is delayed with respect to that of the first This can be merely a delayed version of the output from the first arpeggiator if all other settings on both arpeggiators are id...

Page 24: ...HOLD 7 20 21 22 HOLD TRANS 7 21 Hz 19 I instances 5 INTERN RESCAN 19 internal chord buffer 3 L last note 11 legato 13 LFO frequency 19 LFO MODULATION 13 14 LFO modulation 20 LFO SPEED 19 loop length 12 lowest note 10 M MANUAL CLK ONLY 23 MANUAL CLOCK 23 MANUAL RESCAN 20 MAX VELOCITY 13 14 MIDI 60 8 MIDI Control Zone 7 21 MIDI controller 14 MIDI input 3 MIDI KBD CTRL 21 MIDI Message Handling 3 MIDI...

Page 25: ...3 14 RESCAN 8 12 21 23 Rest Note 17 RESYNC LFO UPON 19 resync sources 19 RESYNC UPON 12 resynchronization 12 REVERSE 11 14 rhythm 10 RUN STOP 7 21 S Saw Down waveform 18 Saw Up waveform 18 Sawtooth Down 18 Sawtooth Up 18 SCAN DIR 21 SCAN MODE 8 11 SCAN PATTERN 14 semitone transpose 8 settings 7 Sine 18 source 3 staccato 13 sustain 13 SWEEP TRANSPOSE 15 T text fader 10 timing resolution 5 transpose...

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