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EMS iVCS3 User Manual

EMS iVCS3
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iVCS3 © is the official EMS emulator. You can learn all that you need to know
about the EMS VCS3 from the original User Manual or from the many
resources now online.
Important Changes (Since Ver. 1.6)
In this version we have updated the Samplers (see back panel). This new
implementation adds many new interesting features such as Loop Crossfade,
Wave Scrubbing, Precise Zoom etc. When you save a new preset, all
sampler information (file name, loop-point, start-point) are saved. But since
this new update implements our new sampler, the presets saved with the old
sampler are no longer available for the loop-points parameter. So we suggest
you may need to resave your presets.
Almost all the build-in Preset Banks have been updated, they have more
consistent levels & panning now. Users of previous versions can restore the
Factory Presets from the Preset Manager to benefit from these new
improvements. See the Preset Manager for more details.
Also the In-App purchase ‘LALA - Sonic Pleasures library' has now been
updated. To get the new version, press ‘Restore Purchases’ under Presets
and Mod. Shop.
Important Changes (Since Ver. 1.1.3)
The Ramp wave of VCO 1 has been reversed in polarity, exactly as on the
original Putney VCS3.
The Square wave of VCO 2 and VCO 3 has been modified to recreate the
offset drift during PWM (Pulse Width Modulation), exactly as on the original
Putney VCS3.
The! Triangular/Ramp wave of VCO 3 has been redesigned to reproduce
better original PWM wave shaping and amplitude, exactly as on the original
Putney VCS3.
The changes in VCO, VCA and VCF implementations can affect the resulting
sound of some old presets. But only for the CONTROL INPUT MATRIX
marked with ‘I’, ‘J’, ‘K’, ’N’, ‘O’ and ‘P’, do we suggest updating the old
presets.
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EMS iVCS3 Specifications

General IconGeneral
BrandEMS
ModeliVCS3
CategorySynthesizer
LanguageEnglish

Summary

Important Changes Since Ver. 1.6

Sampler Updates

Updates to Samplers include new features like Loop Crossfade and Wave Scrubbing; old presets may need resaving.

Preset Bank Updates

Preset Banks updated for consistency. Users can restore factory presets via Preset Manager.

LALA Library Update

The 'LALA - Sonic Pleasures library' is updated. Restore purchases via the Presets and Mod. Shop.

Important Changes Since Ver. 1.1.3

VCO Polarity and Waveform Changes

VCO 1 ramp polarity reversed; VCO 2/3 square wave modified for PWM drift; VCO 3 triangular/ramp redesigned.

Preset Compatibility Note

VCO, VCA, VCF changes may affect old presets, especially those using CONTROL INPUT MATRIX.

Tips & Tricks

DSP and Audio Engine Management

MAINS Toggle controls DSP. Audio Engine cannot be turned off when connected to Audiobus/IAA.

App Background and State Saving

Pressing Home sends app to background, saving parameters for reload. See Settings for details.

Knob and Toggle Interaction

Double-tap knobs/toggles for options; 'Edit' for keyboard values; 'Random', 'Default' settings. Fine resolution.

Matrix Zoom and Connection Management

Tap Matrix to zoom in for new connections. Tap/drag outside to zoom out. Pinch to remove connections.

Joystick Reset

Double-tab Joystick handle to reset it to the central position (zero).

Background Audio and Inter-App Connectivity

iVCS3 supports background audio, mixing with other apps, and Apple IAA/Audiobus.

Meter and Oscilloscope Feedback

Signals connected to METER in Matrix shown in Oscilloscope; feedback through to iVCS3 possible.

Preset/Bank/Sample Deletion

Swipe right-to-left on Preset, Bank, or Sample managers to delete.

Remote Preset Loading via MIDI

Load presets remotely via MIDI Program Change messages (0-127). No bank selection yet.

Accelerometer and Screen Rotation

Disable screen rotation for proper accelerometer functionality.

Recovery Pins Color and Resistance

Tap Recovery Pins to change color (white, green, red) for different resistance/attenuation.

MIDI Panic Function

MIDI Panic sends 'All Notes Off', resets DSP and Keyboard.

Initialization Function

Init resets default values, removes Matrix Connections and Sequencer Grooves.

Random Sound Generation

Create Random Sound generates random values for parameters (excluding matrix/sequencer) for unique sounds.

SYNC

SYNC Goal and Control

SYNC sets global Metronome (MASTER BPM), affecting LFO/Sequencer via MIDI Clock or Ableton Link.

BPM Adjustment and Tempo Setting

Adjust BPM via buttons or TAP to set tempo. MIDI Clock/Ableton Link control tempo when active.

Ableton Link Description

Ableton Link synchronizes beat, phase, tempo wirelessly for multi-device jamming.

BPM to Hz Conversion

Default: 120 BPM equals 1 Hz.

Sync Button Functionality

Sync button waits for next beat from MIDI Clock/Ableton Link to reset LFO/Sequencer phases.

Enabling MIDI Clock Signal

Steps to enable MIDI Clock: Open MIDI Manager, Send Signal, Enable for chosen Source.

Essential and Recommended EMS Modifications

In-App Purchase Features

Extra features available via In-App Purchasing, accessed through the 'In-App Shop'.

Modification Symbols on iVCS3 Modules

Symbols on iVCS3 modules indicate modification features: Oscillator Sync, VC Shape, Sample & Hold, etc.

Oscillators Synchronisation Feature

Sync provides harmonic sound; VCO 2 is master, VCO 1/3 are slaves, resetting slave phase on each VCO 2 cycle.

Lo/Hi Range Oscillator Modification

Modification allows Oscillator 3 to be switched to Lo/Hi Range, similar to Oscillator 2.

VCO3 High Range Mode Limitations

VCO3 in 'High Range Mode' may disable Ramp Shape with 'Phase Sync Oscillators' and is CPU intensive.

Oscillators 1 & 2 VC Shape Modification

Modification uses toggle switch to convert matrix columns 'O'/'P' to Voltage Controlled Oscillator Shape.

Sample & Hold Modification

Adds Simple Random Voltage Generator or Sample & Hold. COLOUR controls frequency, LEVEL controls range.

Filter Slew/Unslew Modification

Novel glide parameter enhances VCF sound quality and cutoff smoothing. Adjust threshold for best sound.

Envelope Shaper Time Extension

Modification provides extended attack (5s) and decay (up to 3 min) for Envelope Shaper.

Matrix Red Pins Modification

Tap Recovery Pins to change color (white, green, red) for resistance/attenuation, affecting signal inversion.

Matrix Red Pins Digital Interpretation

Digital interpretation of red pins: no attenuation, green 0.66. Red pins allow adjustment between normal and inverted signal.

Matrix Red Pins Parameter Handling

Old parameters default to resistor value (-1) for Snapshots; not enabled for HVPad/Control Manager.

Matrix Red Pins Usage Warning

Setup parameter, not for performance adjustment. Moving resistor control during patch may cause glitches.

Joystick Glide Modification

New step value for JOYSTICK is low-pass filtered for smooth movement towards value, rate determined by knob.

Joystick Glide Parameter Handling

Old parameters default to Glide amount for Snapshots; not enabled for HVPad/Control Manager.

Presets

Preset Manager collects Banks and Snapshots. Snapshot is a UI parameter photo; Matrix/Keyboard/Sequencer included.

Saving New Presets (Snapshots)

Save interesting sounds as Snapshots via '+' icon, adding to selected Bank. Sort/delete via List Icon.

Bank Sharing and Restoration

Share Banks via Dropbox/email. Restore factory Built-In Banks from 'Cloud' (Overwrite or Merge).

Snapshot Bank Location

Snapshot banks are in Documents folder, accessible via iTunes Sharing.

Adding New Preset Files

Add new files by copying to documents (iTunes/other app) and refresh list.

Random Preset Loading

Load a preset randomly from the banks list.

Deleting Bank Presets

Delete all presets for a selected bank; a warning message will be displayed.

Snapshot Bank File Format

Snapshot bank file is Property List (.ivcs3); can be edited as text by renaming to .plist.

Deleting Snapshots and Banks

Swipe right-to-left on Snapshots or Snapshots Bank to delete.

Snapshot Pad Purpose and Function

Snapshot Pad obtains intermediate values between four snapshots via complex interpolations (Hyper Vectorial Synthesis).

Snapshot Pad Resizing

Snapshot Pad can be resized to fullscreen for detailed controls.

Snapshot Pad Limitations

Snapshot Pad has no effect on Matrix, Sequencer, and Toggles.

Samples Manager Read/Write

Samples manager reads/writes in Documents folder, shares via AudioCopy/Dropbox/iCloud. Reads Built-in files.

Sample File Actions

Touch a file in the list to show actions: Load to Sampler, Open In... (email, other apps).

Renaming Sample Files

Rename files in Documents Folder. Samples Manager adds original audio file extension if omitted.

Samples Manager File Type Filter

Samples manager only shows audio files; other files in Documents folder are not visible.

Sample Pre-listening

Pre-listen to samples before loading them.

Microphone Audio Capture

Captures audio from microphone, saves as WAV (44.1kHz, 16-bit) in Documents Folder with numbered id-name.

Mono/Stereo Recording and Grab Audio

Record mono/stereo WAV (16-bit, 44.1kHz) per iDevice channels. Grab Audio uses iPad mic/line regardless of connection.

Importing Files via Dropbox/AudioCopy

Import files from Dropbox (login/logout via Settings) or paste from AudioCopy clipboard.

iPod Library Access

Access iPod library for songs, audiobooks, podcasts. Convert to WAV/CAF and store in Documents Folder.

Document Picker Feature

Document picker allows selecting files from outside app sandbox (iCloud Drive, third-party extensions).

Add files through iTunes

Adding Files via iTunes File Sharing

Add files via iTunes File Sharing: Connect iPad, go to Apps > File Sharing, select iVCS3 Documents, click Add.

Control

MIDI Control

Enter 'learn mode' to hear MIDI CC messages. Associate parameters with MIDI CC/Channel. Set 'Widget Range'.

Scrub Y Control

Binds widget to vertical movement on keyboard (Scrub Y). Setting allows speed (gravity) adjustment.

Accelerometer X Control

Accelerometer X used to control parameters via horizontal inclination of the device.

Accelerometer Y Control

Accelerometer Y used to control parameters via vertical inclination of the device.

LFO Control

Low Frequency Modulation is a table look-up oscillator with seven built-in shapes. Frequency in Hz/BPM.

LFO BPM Adjustment

Adjust LFO BPM via buttons or TAP to set tempo. Replaces current value with integer BPM.

LFO Phase Reset (Current)

Resets to zero the phase of the current LFO.

LFO Phase Reset (All)

Resets to zero the phase of ALL active LFOs.

SYNC and LFO Frequency Interaction

Enabling Link disables 'LFO in Hz' slider; LFO frequency sampled from 'MASTER BPM' via SYNC.

SYNC Subdivision Slider

Rescales 'MASTER BPM' from SYNC based on musical note time values (Normal, Triplets, Dotted).

Note Value Definitions

Defines 'D' as dotted note and 'T' as triplet for SYNC subdivision.

SYNC BPM to Step Timing

With 1/4 default, Sequencer step fires every BPM according to 'Local Tempo' or 'MIDI Clock'.

MIDI Signal Management

Enable/disable incoming MIDI signals from physical, virtual, network ports. Understands MIDI Clock from remote apps.

Fast App Switching via Swipe

Swipe symbol indicates fast switching to listed app by swiping right.

Core MIDI Network Wi-Fi Indicator

Wi-Fi symbol appears in Network port cell if Core MIDI Network is connected.

MIDI Clock Port Display and Control

Ports receiving MIDI Clock displayed as icons. Clock symbol enables/disables MIDI Clock receiving per port.

MIDI Clock Port Selection

Receive MIDI Clock from one port at a time; enable/disable for current or select another port.

Channel Input Configuration

Sets input channel for selected port. iVCS3 DK receives Note On/Off in OMNI or specific channels.

Configure Bluetooth LE MIDI

Bluetooth LE MIDI Support

Supports MIDI data via Bluetooth LE on iOS/Mac. Connections are secure and require explicit consent.

Enable NRPN

NRPN Explained

NRPN allows manufacturer-specific MIDI controllers not part of basic MIDI standard. Requires CC 99/98 pair.

NRPN Parameter Control

NRPNs require CC 99 (MSB) & 98 (LSB) to specify parameter, CC 6 for value, CC 38 for fine adjustment.

NRPN 14-bit Controller Feature

NRPN uses 14-bit Continuous Controller feature, offering 16,384 values instead of 128.

NRPN Usage Guidelines

Do not use CC 99/98 as normal CC when NRPN enabled to avoid overlap. Order: CC 99 98 6 38. MIDI Learn works.

Back Panel

Back Panel Features Overview

Back Panel adds Sequencers, Samplers, FX for experimental use. OUTPUT channels feed FX chain.

Back Panel Input Sources

INPUT sources: Mic, Audiobus/IAA, Samplers, DK/Sequencer, or SCOPE feedback.

Back Panel Meter and Oscilloscope

Signals connected to METER in Matrix shown in Oscilloscope; feedback through to VCS3.

Ext. Input

Ext. Input Switch Function

Ext. Input switch selects source: DK/Sequencer, Mute, or Mic/Sampler (Audiobus/IAA) for each channel.

Ext. Input Channel Selection

Select Ext. Input between DK/Sequencer or Mic/Sampler. Mix signals in Mic/Sampler mode. Mute clears Ext. Input.

DK Keyboard

DK Keyboard Voltage Output

VCS3 Keyboard DK produces a 3 Volt control signal. Middle F#=0V, High C=-1.5V, Low C=+0.5V (settings).

DK Keyboard Modes and Controls

Employ DK as Controller Voltage or play with internal VCO (saw). Controls: Frequency, Dynamic Range, Tuning Spread, Level.

Tuning Spread Range and Calibration

Tuning Spread range is +- half semitone (original), +- 2 semitones (iVCS3). Calibrate via Input Level (Ch.1/2).

Perfect Pitch and Scale Tuning

Achieve perfect pitch (temperate scale) by setting Input Level Ch1/2 to 0.32v. Other settings yield +- tones/octave.

DK Keyboard Dynamic Range

DK keys have a built-in VCO. Amplitude controlled by key touch position (pianissimo to fortissimo).

iVCS3 Keyboard Dynamics (Velocity)

Play iVCS3 keys top-to-bottom to change note amplitude (dynamics/MIDI key velocity).

DK Keyboard VCA Mixer Function

VCA inside DK allows mixing iVCS3 audio signal with internal DK VCO.

DK Keyboard Mixer Workflow

Send signal to METER, mix with DK VCO, send back to iVCS3 input 1 for 3-VCO mix controlled by keyboard dynamic.

DK Keyboard Legato Behavior

Contrast original DK (highest note priority) and iVCS3 'NEW' legato behavior (switchable via Settings).

Locking DK Keyboard Function

Locking DK Keyboard sustains every note. Last pressed key held even after finger lift. Snapshots save touched keys.

DK Keyboard Octave Tuning

DK Keyboard outputs 1V/octave. Trim voltage via Input Level Ch1/2 to 0.32v for 12 notes/octave.

Sequencer

Sequencer Programming Overview

Sequencer is fully programmable: direction, steps, tempo, random direction. Groove values set step info.

Sequencer Groove Values

Two independent groove values (DK, Joystick): Key & Dynamics. Auxiliary groove for Channel 1 Panning.

Sequencer Panning Groove

Auxiliary groove for Ch1 Panning is absolute, overwrites Main Panel Ch1 PAN (Ext.) when enabled.

Recording Sequencer Groove Values

Record Groove values by tapping DK/STICK buttons. Keyboard AKS shows Keys/Dynamics programming.

Sequencer Record Mode Features

Enable 'Record' in KS: notes skip to next step, allowing dynamic programming. Random/Interval buttons transpose sequence.

Sequencer Interval Buttons

Interval buttons introduce offset voltage when touched, don't transpose sequence.

Sequencer Step Enable/Disable

Enable/disable Sequencer steps by pushing down Steps buttons after programming Grooves.

Sequencer Sync and Jump

Sync/jump through steps during performance by touching top bar step numbers.

Sequencer Voltage Outputs

Sequencer has two Voltage Outputs: DK Keyboard to Input 1 (Keys)/Input 2 (Dynamics), and Sequencer to STICK rows.

Joystick Output Control

Disable/only vertical/both Joystick Outputs via toggle. Joystick handles work as offset, reset by double-tap.

Joystick Vertical Range Setting

Joystick Vertical Range (16) must be set to 0.32 (V/Octave sensitivity) for Input 1 (8).

DK Groove Routing

DK Groove routes Keyboard Voltage to Input 1 (8) and Dynamics Voltage to Input 2 (9).

STICK Groove Routing

STICK Groove routes Keyboard Voltage to Vertical Stick (16) and Dynamics Voltage to Horizontal Stick (15).

Sequencer SYNC Activation

Enabling SYNC switch disables local tempo; TEMPO is sampled from Master SYNC Clock.

SYNC Tempo Subdivision

Subdivide SYNC Tempo via Subdivision Menu, showing musical note time values.

Subdivision Menu Notation

Subdivision Menu lists symbols for musical note time values (Normal, Triplets, Dotted).

Normal SYNC Subdivision Values

Normal SYNC subdivisions: 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64.

Triplet SYNC Subdivision Values

Triplet SYNC subdivisions: 1/1T, 1/2T, 1/4T, 1/8T, 1/16T, 1/32T, 1/64T.

Dotted SYNC Subdivision Values

Dotted SYNC subdivisions: 1/1D, 1/2D, 1/4D, 1/8D, 1/16D, 1/32D, 1/64D.

Dotted and Triplet Definitions

Defines 'D' as dotted note and 'T' as triplet for SYNC subdivision.

Sequencer Step Firing Rate

With 1/4 default, Sequencer fires a step every BPM according to 'Local Tempo' or 'MIDI Clock' BPM.

Feedback

SCOPE Jack for Feedback

SCOPE jack-socket (Column A) connects to METER, allows feedback into Studio via Input Amplifiers.

Oscilloscope/Spectral

Oscilloscope Features

Oscilloscope manages time scale, zooming, amplitude gain. Reads DC and AC signals.

Spectral Mode and Frequency Analysis

Spectral mode uses time/amplitude for logarithmic display. Frequency analysis FFT is 4096 samples.

Mic/Samplers

Mic/Sampler Input Options

Feed iVCS3 with two samplers, or mixed signal from mic/line or Audiobus/IAA.

Sampler Waveform Scrubbing

Touch and drag sampler waveform to scrub audio. Scrubbing speed relates to finger position on waveform.

Loop Point Setting

Tap symbol to set loop points. Enter 'loop edit mode' for fine regulation or selecting whole file.

Loop Fine Regulation and Selection

Tap and hold for fine loop regulation. Double tap to select the whole file again.

Loop Deselection and Zoom

Deselect loop (tap again) to zoom-in into the loop selection.

Scan Reset Function

Resets scanning to the start position.

Waveform Scrubbing Modes (Absolute/Relative)

Absolute mode: pointer jumps to finger touch. Relative mode: scrubbing occurs from sampler position toward finger.

Sampler Control Icons

Icons control: Reset samplers, Synchronise Ch.2 phase to Ch.1, Load audio sample.

Stereo Sample Input Channel

For stereo samples, choose input channel: left/right or 50% mix of both.

Scan Reset Triggering

Scan reset can be triggered from DK or the Sequencer.

Sampler Ch.2 Ratio Linking

Link Sampler Ch.2 Ratio with Sampler Ch1 (lock icon) for stereo files and synchronized scanning ratio.

Crossfade and Waveform Style Settings

Disable Crossfade and change Waveform style via Settings.

FX

Master Output FX (Flanger/Delay)

Master Output FX: Flanger/Delay toggle (Off, Flanger, Delay). FLANGER: lfo/d knobs adjust frequency/amplitude.

DELAY Effect Parameters

DELAY: 'd' knob sets delay line length. 'g' knob controls feedback for echo density. Wild pitch glissandi possible.

Flanger and Delay Time Ranges

Flanger 'd' time: 1-10ms. Delay 'd' time: 10-2000ms. Flanger 'lfo': 0.01-10Hz. Delay 'lfo': 0-1 (dry/wet).

Dynamic Compressor/Expander Unit

Functions as compressor, limiter, expander with soft/hard-knee mapping and variable performance.

Settings

Sampling Rate Setting

Recommended sampling rate is 44.1 kHz. Lower rate reduces burden but also frequency range.

Buffer Size Setting

Buffer Size sets Audio Device latency. Taken from Host when using Audiobus/Inter-App.

Keyboard Split (Octaves)

Sets the number of keys visible in the main view.

Spring Reverberation Modes

Select one of six reverberation modes: FDN (8 delay line stereo) or Parametric (Schroeder model).

IR Convolution Reverb Types

IR convolution types: Hybrid 1 (FDN/IR), Hybrid 2 (Parametric/IR), FTConv (signal/IR memory).

Spring Crash Feature

Spring crash uses hardware accelerometer for triggering spring tilts, like the original.

Ring Modulation

Ring Modulation (RM) Overview

Ring Modulation (RM) was famous effect used by BBC Radiophonic Workshop. Creates voices of Cybermen/Daleks.

iVCS3 Ring Modulation Types

Three RM types: 'Ideal' (simple multiplication), 'VCS3' (quadratic operator), 'Diode' (Julian Parker model).

Ring Modulation Input Roles

RM 'Input A' is Modulating Signal, 'Input B' is Carrier Signal. Inverting order changes sound results.

Include in Presets

Preset Inclusion Options

Switch includes/excludes Matrix, Keyboard, Sequencer, Control Manager, Knobs Color when saving new presets.

Snapshot Pad Resolution Update

Sets Snapshot Pad interpolation time interval (15-350ms). Shorter times mean higher resolution, higher CPU.

Save/Restore Last App Setup

Saves/restores all iVCS3 and Fx parameters on exit, reloads on next opening.

Joystick Handle Springy

Enable/disable Joystick Handle Springy feature.

Dropbox Account Linking

Link or unlink Dropbox account.