Korg EA-1 manual Filter

Page 24

4.Pattern mode

OSC2 Pitch Ofs (OSC2 pitch offset)

–1 octave ... 4 octaves

Specify the pitch of OSC2 relative to the pitch of OSC1. The pitch of OSC2 can be adjusted in the range of –1 octave to 4 octaves from the pitch of OSC1.

The pitch of OSC1 will be the pitch that sounds when you use the keyboard function or the pitch specified for a phrase pattern.

OSC1 Wave

...Audio In

Specify the basic waveform of OSC1.

(sawtooth wave)

This waveform is rich in overtones, and is suitable for bass or synth lead sounds.

(square wave)

This waveform contains only the odd-numbered har monics, and produces a tone typical of electronically produced sound.

(triangle wave)

This waveform is more mellow than the sawtooth wave or square wave, and is suitable for sub-bass sounds etc.

Audio In

The audio signal input from the audio input jack will be used as OSC1.

So that they will be particularly suitable for bass sounds, the waveforms of OSC1 have a slightly heavier sound (fun- damental) than the waveforms of OSC2.

OSC2 Wave

, ,

Specify the basic waveform of OSC2 (refer to OSC1 Wave).

When OSC Mod is set to Deci, the basic waveform

selection will have no effect.

OSC Mod (oscillator modulation)

off, Ring, Sync, Deci

Select the type of modulation that will occur between the oscillators. Since OSC2 will be modulated (i.e., it will be the slave), the results of the modulation will be output from OSC2.

For either of the types of oscillator modulation, using a motion sequence etc. to change the pitch of OSC2 will pro- duce timbral changes.

•Off (When the OSC Mod LED is dark)

OSC 1

 

OSC 1

WAVE

 

Output

This type of modulation generates a frequency consisting of the sum and difference of the OSC1 and OSC2 frequen- cies. When you move the OSC2 pitch offset knob the tim- bre will change, producing metallic sounds or sound effects. The modulated sound will be output from OSC2

The tone and volume of Ring Modulation may vary

depending on the phase difference between OSC1 and OSC2.

•Oscillator Sync

OSC 1

OSC 1

WAVE

 

Output

OSC 2

OSC 2

WAVE

Sync

Output

This type of modulation forcibly resets the OSC2 waveform by synchronizing its pitch to the pitch of OSC1. Moving the pitch of OSC2 will produce the popular "sync lead" sound. The modulated sound will be output from OSC2. Differences in the OSC1 waveform will not affect the out- put of OSC2.

•Decimator

OSC 1

 

 

 

 

 

OSC 1

WAVE

 

 

 

 

 

Output

OSC 2 Pitch

 

 

 

 

 

 

 

OSC 2

Decimater

 

 

 

(Sampling Freq)

 

 

 

Output

 

 

 

 

 

This type of modulation reproduces the OSC1 waveform at the sampling frequency of OSC2. The digitized OSC1 waveform will be output from OSC2. This is effective when creating electric bass sounds etc.

If OSC1 is a square wave, Decimator will have little effect.

When OSC Mod is set to Decimator, the basic wave-

form of OSC2 will be ignored.

Filter

The filter processes the sound produced by the oscillator to make it less bright, etc.

Cutoff frequency

EG Int > 0

EG Int

Cutoff

Decay

OSC 2

OSC 2

WAVE

Output

When OSC Mod is off, the oscillators will not modulate each other.

By using OSC2 Pitch Ofs to create a slight difference in pitch between the oscillators, you can produce a spacious detune effect. Setting a one-octave difference in pitch is effective when you wish to create thick synth-bass sounds etc.

•Ring Modulation

Trigger on

Cutoff frequency

EG Int < 0

Cutoff

EG Int

Decay

Trigger on

Time

Time

OSC 1

 

OSC 1

WAVE

 

Output

OSC 2

 

OSC 2

WAVE

Ring Mod

Output

Cutoff

0 Hz ... 20,000 Hz

Set the cutoff frequency of the low-pass filter. Overtones higher than the cutoff frequency will be cut, making the sound more mellow.

If Cutoff and EG Int are set to 0, you will hear virtu- ally no sound.

24

Page 23 Page 25
Image 24
Page 23 Page 25
Contents Page FCC Regulation Warning for U.S.A CE mark for European Harmonized StandardsContents Song mode Global mode Main features IntroductionAbout the data you create on the EA-1 Adapter cable holder Power switch AC Local Voltage Make connections and playExample connections Preparing to playFront and rear panel Common sectionSynthesizer section Front and rear panelSequence Control section Step Key sectionConnector section Shift keyConceptual diagram of the EA-1 What is a Song?Basic operation Quick Start Listening to a SongUsing the dial to change the tempo Using the Tap Tempo key to change the tempoListening to Patterns Trying out the functionsStriking keys to play sounds Keyboard function Modifying editing the soundPart What is a Phrase Pattern? Playing the sound of a part along with a song or patternModify edit the sound along with a song or pattern Modifying editing a phrase patternStep Recording using the Step keys to create a phrase Saving a pattern that you create BasicUsing a Motion Sequence What is a Motion Sequence?Connecting various sources to the audio input Basic operation QuickUsing the EA-1 as a tone generator module What is Pattern Set?Playing with Pattern Set Synchronized playback with the ER-1 EA-1ER-1 Basic operation Quick Start EA-1 ER-1Pattern mode Setting the playback tempoPlaying a pattern Pattern Play Selecting a patternCreating a pattern Selecting a patternEditing the sound of a part Synthesizer parametersFilter Effect Length, Scale/Beat settings Swing settingsWhat is Length? LengthCreating a phrase pattern Realtime recordingStep recording Event editingChanging the pitch PitchChanging the gate time Gate Time 25...64.0Motion sequence Convenient functions for Editing patternsTransposing a phrase Transpose Moving data within a part Move DataTranspose 24...24 Move Data 16...16Copying a part Copy Part Data Copy within a patternErasing motion sequence data From a part Clear MotionUsing Pattern Set to perform Pattern Set Play Pattern SetRegistering a pattern for Pattern Set Saving a pattern Write Song mode Selecting a songPlaying a song Song Play Creating a song Creating a song from scratchErasing song data Clear Song Specifying a pattern for each positionSpecifying the pitch of each Pattern Editing a songInserting a pattern at a specified Position Insert Pattern Pitch Offset 24...24Song mode Deleting a pattern from a specified Position Delete PatternChanging the pattern for a specific Position Saving a song Write Deleting event data from a song Clear EventChecking for song event data Global mode Metronome settingsAdjusting the volume AudioProtect settings Memory Protect Saving the settings you Modify in Global mode WriteProtect On, oFF Midi mode Setting the Midi channel Part 1 Midi chSetting the Midi channel Part 2 P2 ch Transmit/receive dump Data Midi Data DumpMidi filter settings Saving the settings you Modify in Midi mode WriteAdjusting the pitch bend Range Bend Range 12...12Appendices About MidiTroubleshooting Transmitting sound setting Data Data DumpAbout system exclusive messages Editing sounds etcError messages Er.1 SpecificationsEr.2 Er.9Example sounds Blank Chart Index Realtime Recording Step RealtimeResonance RegisteringPattern Name List Song Name ListBank Midi Implementation Chart Synthesizer1999.2.3 Transmitted Recognized Remarks FunctionKorg INC

EA-1 specifications

The Korg EA-1 is a distinctive and innovative synthesizer that has captured the attention of electronic musicians and producers since its release. As part of Korg's Electribe series, the EA-1 offers a unique combination of features, technologies, and characteristics that make it an ideal choice for those looking to create cutting-edge sounds and rhythms.

One of the main features of the Korg EA-1 is its analog modeling synthesis engine. This technology allows users to create rich and dynamic sounds with an impressive level of detail and complexity. The EA-1 is designed to emulate classic analog synthesizers, providing a warm and organic tone that is often sought after in electronic music. With its versatility, the EA-1 is capable of producing a wide range of sounds, from punchy bass lines to shimmering leads and atmospheric pads.

The EA-1 also includes a powerful sequencer that allows for intricate pattern creation. Musicians can easily create and edit sequences, adjusting parameters such as pitch, rhythm, and modulation in real-time. The sequencer features up to 64 patterns, each of which can be arranged into a complete song. This feature is ideal for live performances, enabling musicians to switch between different patterns seamlessly.

Another standout characteristic of the Korg EA-1 is its user-friendly interface. The device boasts a clear layout, with dedicated knobs and buttons that make it easy for users to navigate its various features. The large LCD display provides essential information at a glance, allowing for quick adjustments during live sessions or studio work.

In terms of connectivity, the Korg EA-1 is equipped with MIDI in and out ports, enabling it to be easily integrated into any setup. Musicians can connect the EA-1 with other instruments and software, enhancing their creative possibilities. Additionally, the EA-1 supports audio input, allowing users to process external sounds through its built-in effects.

The EA-1 also features a range of built-in effects, including delay and reverb, which help to shape and enhance the sounds created with the synthesizer. These effects can be applied in real-time, providing added depth and character to the music.

In summary, the Korg EA-1 synthesizer stands out due to its analog modeling synthesis, powerful sequencer, user-friendly interface, extensive connectivity options, and built-in effects. This combination of features and technologies makes it a valuable tool for electronic musicians seeking to create unique and inspiring sounds. With its ability to emulate classic tones while offering modern flexibility, the Korg EA-1 continues to be a popular choice for music creators across various genres.
Top Page Image Contents