Roland VK-8 How the Other Tones are Created, Vibrato and Chorus, Harmonic bars, Reverb

Page 14

How the VK-8 Works

Vibrato and Chorus

Traditional tone wheel organs provided a total of six different effects: three kinds of vibrato (V1, V2, V3) and three kinds of chorus (C1, C2, C3).

Vibrato is an effect that cyclically modulates the pitch, and chorus is an effect that modulates the pitch to produce spaciousness and depth.

Harmonic bars

The harmonic bars of a tone wheel organ are arranged in ascending order of pitch, from left to right. Borrowing some inspiration from the pipes of a pipe organ, the bars are labeled in “feet,” with 8’ being the fundamental.

There is one exception in the ordering of the harmonic bars, and that is the 5-1/3’ bar located second from the left. According to the pitch order, this should be the third from the left, but since 5-1/3’ is an overtone of 16’, and blends with the 16’ sound, it is placed beside the 16’ bar.

The harmonic bars are color-coded in three colors. The bars whose pitches are in octave relation to 8’ are white, the bars that are not octave harmonics are black, and the lower pitch range is brown.

On tone wheel organs, the highest feet were repeated (“reused”) in the high keyboard range, and the lowest feet were repeated in the low range. This is called “fold-back.”

If an organ had 109 tone wheels, all nine harmonics of the harmonic bars could be sounded by all 61 keys of a tone wheel organ. However, if this were the case, the upper range would be unpleasantly screechy, and the lower range would be excessively low and muddy-sounding.

For this reason, fold-back is used on the VK-8 to produce a well-balanced sound.

Amp Type (Rotary, Overdrive, Tone)

By using a rotary speaker with a tone wheel organ, you can create modulation and a sense of rotation, producing a spacious, three-dimensional sound.

On the VK-8, the volume of the rotary speaker, the time over which rotation will transition between fast and slow, the speed of rotation in fast and slow states, and the sense of spaciousness can each be adjusted independently for the tweeter and woofer.

Reverb

Reverb is an effect that adds reverberation to the sound. Reverb types ROOM, HALL, and CHURCH add the reverberation of differently sized acoustical spaces. The SPRING reverb type simulates a reverb circuit that used springs, and was often found on traditional organs.

The VK-8 lets you adjust the reverb time (p. 57). Also, by turning the [REVERB] knob you can adjust the volume of the reverb (p. 37).

How the Other Tones are Created

The VK-8 also contains sounds other than organ sounds. These are referred to as “OTHER TONES.” OTHER TONES can be played on Upper, Lower, or Pedal.

OTHER TONES provide the following eight sounds.

1.PIANO

2.ELECTRIC PIANO 1

3.ELECTRIC PIANO 2

4.STRINGS

5.JAZZ SCAT

6.CHOIR

7.SYNTH

8.BRASS

14

Page 13 Page 15
Image 14
Page 13 Page 15
Contents Conventions Used in This Manual Dark blinkImportant Safety Instructions Page Using the Unit Safely Important Notes Contents Troubleshooting Memo Main Features Panel Descriptions Pedal button 19 -8 button Other Tones Level knob Lower buttonMidi Pedal in connector Power switchMidi Keyboard in connector Rotary Tone Cabinet connectorHow the Organ Sound are Created How the VK-8 WorksAbout the Virtual Tonewheel Sound Generator Harmonic bars How the Other Tones are CreatedVibrato and Chorus Amp Type Rotary, Overdrive, ToneSystem memory Preset memoryAbout the Memories Connecting the Power Cord Before You Begin PlayingConnecting Your Amp, Speakers, or Headphones TRSConnecting the Pedal Keyboard Connecting an Expression Pedal or Pedal SwitchBefore You Begin Playing Restoring the Factory Settings Factory Reset Press the Split button Press the Preset button to make its indicator lightListening to the Demo Songs Demo Song Song Name Copyright NumberPlay the keyboard to hear the sound you selected Playing the OrganListening to Various Sounds Move the harmonic bars to edit the sound p Press the H-BAR Manual button to make its indicator lightAbout the Organ Voice Button PartAdjusting the Sound in Real Time Harmonic Bars 5th Root 8th 12th 15th 17th 19th 22nd Below Playing the Organ What Are Feet? Leakage Noise Changing the Organ Sound Wheel Type, Leakage LevelTone Wheel type Turn the Leakage knobThird Third Percussion button Adding Crispness to the Sound PercussionSecond Second Percussion button Soft Soft Percussion button Slow Slow Percussion button Fast PercussionAdding Modulation to the Sound Vibrato and Chorus C-2, C-3Brake button Using the Cosm Rotary Speaker Effect Rotary SoundSLOW/FAST button Rotary on buttonAdding distortion to the sound-Overdrive Changing the Amp Type Amp Type Overdrive, ToneChanging the virtual amp Changing Sound CharactersUsing the D Beam Controller to Produce Common Organ Effects Press D Beam on button to make its indicator lightSpring Reverb Shock Giving the sound a metallic character Ring ModulatorStopping the rotation of the tone wheels Wheel Brake Adjusting the Sensitivity of the D Beam Controller Manually adjusting the sensitivity of the D Beam controllerChanging the Reverb Type Press the Reverb button to switch the reverb typesAdding Ambience Reverb Changing the Split Point Press the Split button to make its indicator lightDividing the Keyboard Split Lower Part Upper PartApplying the Active Expression Function to the Organ Voice Using the Expression PedalUsing the Active Expression Function Applying the Active Expression Function to the Other TonesAssigning a Function to the Control Pedal Using a Control PedalPreset button’s indicator is dark Button Parameter Rotary SLOW/FASTOverdrive Preset UPOther Tones Glide Other TonesUsing the Hold Pedal to Sustain the Sound Layering Other Tones with Organ Sounds Layer Turn the Other Tones Level knob to adjust the volumePlaying Other Tones Button TonePlaying Other Tones Saving Your Settings Preset Preset contains the following settingsCopying a preset Saving to a Preset in the Same BankSaving to a Preset in Another Bank Selecting the copy-source presetAbout the Edit Modes Basic ProcedureAdvanced Use If the setting is an on or OFF switch Advanced UsePreset button’s indicator lighted Button Parameter Rotary-related SettingsPreset button’s indicator extinguished Button Parameter Rotary Woofer Level Click Noise and Percussion Settings On Click LevelMIDI-related Settings When setting things other than the Midi channelSetting Explanation Connecting/disconnecting the sound generator and keyboardAdding Midi Thru functionality to the Midi OUT connector OFFWhen making Midi channel settings Drum Midi CH. Drum Midi Channel Initial setting 10 chEQ Middle -5-0-+5 Equalizer and Other SettingsEQ Bass -5-0-+5 EQ Treble -5-0-+5Switching the polarity of the Hold pedal Effect and Other SettingsSwitching the polarity of the control pedal Transposing the entire VK-8 KEY Transpose -6-0-+5SLOW/FAST Reverb TimeSelecting the part that will play the Other Tones ContinuousAbout Midi Channel Changing the function of the Midi in connectors SUBAbout Midi KeyboardUsing the VK-8 with a Dual Keyboard Connecting a Pedal KeyboardCarry out the recording Play back your performanceSaved on an External Save the settingsLoading Back Data That’s Been SequencerConnecting a Rotary Speaker Pin No Output dataTroubleshooting Lease a key Problem Check SolutionClick is heard when you press/re Pitch is incorrectTed/receive correctly Preset memory contents are lostMidi messages are not transmit Can’t hear spring shock noiseAll indicators light for several seconds Error IndicationsWhen you turn on the power During normal operationPreset/OTHER Tones List Preset ListOther Tones List Button’s Number ToneEdit Parameters Settings that are saved for the entire SystemParameters that are stored in a preset Drum List Control Change Midi ImplementationChannel Voice Messages Note off All Note Off Controller number Reset All Controllers Controller numberAll Sound Off Controller number Active SensingData Request 1 RQ1 Data Set 1 DT1DT1 Identity ReplyData Set1 System Organ How to calculate the checksum Midi Implementation Supplementary materialMidi Implementation Chart Main Specification Index BankIndex Memo Information Avis 02896667 ’03-6-3N
Top Page Image Contents