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Index

5

Interpole

Contents

Mode

The following section describes general
settings pertaining to the device, the types
of modulation, and the operating modes.

External/Internal

Interpole has both

 internal and external

inputs. The signal from the internal inputs
passes through the entire signal chain and
arrives at the filter to be processed. The
signal at the 

external inputs serves a dif-

ferent purpose as a signal only to be
analyzed by the envelope follower section.
This switch selects which signal to send
to the envelope follower. The envelope
follower converts the amplitude changes
to control signals used for changing the
cutoff frequency or amplification. When set
to 

Internal, the signal that is processed by

the filter is the same signal analyzed by
the envelope follower. When set to 

External,

the signal used for control functions is dif-
ferent than the one processed by the filter.
You can therefore use an external signal
to process the frequency spectrum of
another signal through filter modulation.

Gate/Envelope

Selects the basic operating mode of the
envelope section. When 

Env (Envelope

Follower) mode is enabled, the envelope
section supplies a continuous modulation
signal derived from an analysis of the input
signal. When 

Gate is selected, an ADSR

envelope triggered by either an adjustable
threshold or a MIDI note-on instruction
supplies the modulation signal.

Bypass/Effect

This switch enables or disables the effect
for the respective channel. With Bypass
enabled, the signal is routed directly from
the input to the output, bypassing the effect.

Summary of Contents for Noah Interpole

Page 1: ...rpole Contents Interpole Introduction Interpole Structure and Overview Controls Mode Envelope Follower and ADSR Envelope Follower ADSR Envelope LFO Link Filter VCA MainTable Of Contents Tactive Instrument Modeller ...

Page 2: ...of all vintage synths still considered to be one of the best sounding filters ever It s to the special characteristics of this filter that Interpole owes its unique liveliness and warmth To retain the analog character of the filter while providing a variety of sonic possibilities CreamWare s Circuit Modeling process has been employed This has resulted in the highest fidelity aliasing free algorith...

Page 3: ...LFO rate with an envelope the LFO modulation becomes even more complex and lively But it is the filter that performs the most important task the actual signal processing In addition to the standard cut off and resonance parameters the filter also provides a Drive parameter to introduce distortion that produces effects from gentle saturation to heavy distortion with strong resonance everything you ...

Page 4: ...right channels there is an envelope follower or an ADSR envelope an LFO the filter and the VCA The left channel signals and control positions can be partially transferred to the right channel to simplify the handling of stereo signals The right channel sections differ slightly from the left and contain a few additional switches Current preset In the upper left corner of the graphic surface you ll ...

Page 5: ...nal the signal that is processed by the filter is the same signal analyzed by the envelope follower When set to External the signal used for control functions is dif ferent than the one processed by the filter You can therefore use an external signal to process the frequency spectrum of another signal through filter modulation Gate Envelope Selects the basic operating mode of the envelope section ...

Page 6: ...on signal The Sensitivity control adjusts an optimal level for the modulation The Attack and Decay settings adjust the accuracy with which the envelope follower tracks the input signal In this operating mode the Sustain and Release settings are not used Sensitivity Controls the intensity of the of the envelope follower s modulation signal Using the signal LED you can ascertain the level supplied b...

Page 7: ...ed In MIDI mode the sensitivity control is disabled MIDI Sens This switch selects the Gate s operating mode that is whether it is to be triggered by a MIDI note on message or by an adjustable threshold level MIDI selects MIDI note on as the trigger and Sens selects threshold With MIDI selected any incoming MIDI note will trigger the envelope Just make sure the correct MIDI channel is configured In...

Page 8: ... for sound manipulation Six different modulating waveforms are available The rate can be set manually or controlled by the MIDI clock and further modulated in principal by the envelope In addition the LFO can be restarted via MIDI to retain suitable sync with a song Filter frequency and amplitude are independently adjustable In Link mode the LFO switches from the first channel to the second By inv...

Page 9: ...setting The process starts and ends at the adjusted rate Both positive and negative modulation is possible Rate Sets the basic unmodulated LFO oscillation rate Note When MIDI synchronization is enabled the speed of the LFO is controlled by Note values A complete oscillation corresponds to the note duration Select the desired value from the drop down list Waveform Select here one of six waveforms s...

Page 10: ...type also known as a cascading filter Frequencies below the cutoff remain unprocessed hence the designation lowpass filter Frequencies above the cutoff frequency are attenuated at a rate of 24dB octave Not much needs to be said about the renowned original version of this filter other than it is generally considered to be one of the best sounding filters ever to be implemented in a synthesizer And ...

Page 11: ... used as a signal source VCA The voltage controlled amplifier VCA is the last unit in Interpole s processing chain The VCA follows immediately after the filter and is controlled by the envelope and the LFO Envelope control is optional to allow the LFO to perform alone as a tremolo or autopan VCA In Out Switches modulation of the amplifier by the envelope section on or off In the In position the en...

Page 12: ... Phase 9 L LED 6 LFO 3 8 10 Link 10 Link In Out 8 10 Link Normal Invert 10 low frequency oscillator 2 Low Note On 6 lowpass 10 Lowpass Moog cascading filter 2 M MIDI 3 7 Mode 5 Modulation Offset 6 N Note 9 O Off 8 On 8 OnTop 4 overtones 11 Overview 3 P Presets 4 R random 9 Rate 9 Release 6 Release On Off 8 Resonance 11 Retrig MIDI Off 8 Retrig On 8 S saw down 9 saw up 9 Sens 7 Sensitivity 6 7 sign...

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