Roland E-A7 Reference Manual

3
Basic Structure
Broadly speaking, the E-A7 consists of a controller section, a sound generator section, an arranger/song player section, and a sampler section.
Controller Section
The controller section is what you perform on. For example, the performer’s actions such as “playing the keyboard” are sent from the controller
section to the sound generator section, causing it to produce sound.
The controller section includes the keyboard, assignable lever, the panel sliders and buttons, and the pedals connected to the rear panel.
Sound Generator Section
This section produces the sound. It receives performance data from the controller section, the arranger/song player section, and external MIDI
devices, and produces a variety of sounds in response to such data.
Arranger/Song Player Section
The arranger detects chords by analyzing the operations from the keyboard controller, and plays the appropriate style data.
The song player plays back audio les or sends MIDI messages from SMF data to the sound generator.
Sampler Section
The sampler captures sounds from an audio device or mic connected to the input jacks, or audio les (WAV les) from a USB ash drive, and saves
them as User Samples.
You can use these user samples to create user sounds (User Tones, User Drum Kits).
Units of Sound
Tone
Tones are the units of sound with which you perform.
Tones that you created by editing the built-in tones, or by loading a waveform (User Sample) you created using the sampling function, are called
“User Tones.”
Drum Kit
A drum kit is a group of percussion instrument sounds.
In a drum kit, a dierent percussion instrument sound is played by each key (note number) you press.
The sounds (mainly percussion instrument sounds) that are assigned to each note of the internal drum kits are called Drum Inst.
The drum inst of the internal drum kits or waveforms (user samples) that you captured using the sampling function can be freely assigned to the
keyboard to create your own original drum kit.
A drum kit created by the user is called a “User Drum Kit.”
User Sample
A waveform captured by the sampling function is called a “User Sample.”
User samples are the material from which you can create user sample tones and user drum kits.
User Program (UPG)
A User Program (UPG) contains tone settings for the four parts that are assigned as the Keyboard Parts (Upper1, Upper2, Upper3, Lower). The style
and song settings, as well as all settings that are loaded with them (for example, the intro and ending status, and settings for the selected variation),
are also handled together within the user program (UPG).
You can store one hundred UPGs as a User Program Set (UPS).
An Overview of the E-A7

Roland E-A7 Specifications

General

Equalizer	Yes
Product type	Digital synthesizer
Product color	Black
Sound effects	Chorus, Equalization, Reverberation
RMS rated power	24 W
Number of speakers	2
Keyboard number of keys	61
Maximum polyphony (notes)	128
Power source type	DC
Display type	LCD

Weight and Dimensions

Depth	318 mm
Width	1045 mm
Height	136 mm
Weight	7900 g