Comparison Roland E-A7 vs Korg Pa4X-61

- Synthesizer. In this case, we mean classic digital synthesizers - keyboard musical instruments that can reproduce the sounds of various instruments and sound effects. The functionality of such models can be very diverse - from budget devices with minimal functionality to advanced instruments suitable even for professional musicians.

- Work station. High-quality synthesizers for professional use, capable of playing the role of not only a musical instrument, but also a remote control for recording and mixing sound. Accordingly, a mandatory feature of such instruments is a sequencer (see below). In addition, workstations are distinguished by advanced equipment that corresponds to the class: among such instruments there are models with full-size hammer-action (see “Mechanics”) keyboards with 88 keys, an abundance of adjustments and connectors is available to the user, and the sound quality and reliability in inexpensive models is good , in advanced ones - almost ideal. True, synthesizers of this type are very expensive, therefore, combined with their extensive capabilities, they are indispensable assistants for composers, sound engineers and other specialists involved in both performing and recording music.

— Children's synthesizer. The features of such instruments are generally clear from the name - these are synthesizers designed for children's. Externally, such models differ from “adu...lt” ones primarily in the small number of keys (up to 49, often less) and the size of the keys themselves, which is reduced to suit a child’s hand. In addition, the performance characteristics and functionality of children's's synthesizers are also most often more modest: for example, polyphony (see below) rarely exceeds 8 voices, and the overall sound reliability is very low. But the learning opportunities in such instruments, on the contrary, can be very extensive, and in general, children's's synthesizers are considered a good choice for initial training.

— Analog synthesizer. Instruments in which sound is generated not through digital processing, but through passing through a real electrical circuit. In a very simplified way, the principle of operation of such an instrument can be described as follows: each key, when pressed, turns on its own sound generator of a certain frequency, which is responsible for the desired note, and with the help of additional settings (oscillators, envelope, filters), the musician gives color to this sound. From the user's point of view, the most noticeable difference between an analog synthesizer is the lack of built-in tones - the musician adjusts all the details of the sound manually. Analog instruments, on the one hand, are more difficult to control, but on the other hand, they allow you to achieve effects that are not available digitally. In addition, the color of the sound itself on analog synthesizers is somewhat different. Historically, instruments of this type appeared earlier than digital ones, but today they are highly specialized solutions, designed mainly for professional performers and used in specific musical areas.

The number of built-in sounds provided in the synthesizer.

The number of timbres is often described as the number of instruments that a given model can imitate. However, this is not entirely true — rather, this parameter can be called "the number of instruments and sound effects." For example, the same instrument — an electric guitar — with different "gadgets" (distortion, overdrive) will sound differently, and in the synthesizer each such gadget will be considered a separate timbre. The “drums” timbre usually combines different types of drums and other percussion instruments — in other words, it allows you to portray both the “bass drum” and the cymbals without switching settings, just by pressing the desired keys. And some timbres may not have analogues among real instruments at all.

The more built-in timbres, the more extensive the possibilities of the synthesizer, the more diverse the sounds that can be extracted from it. At the same time, in high-end models like workstations (see "Type"), this number can reach 1000 or even more.

The number of memory slots for user tones provided in the synthesizer.

For Voices in general, see “Preset Voices” above. User timbres are sound settings that were not originally provided in the synthesizer's memory and are created by the user according to their preferences. This feature is indispensable in cases where the built-in set of timbres does not contain the necessary options. However, the capabilities of the User Voices may vary from model to model. So, one instrument only allows you to edit and supplement existing timbres (for example, add a “wah-wah” effect to a bass guitar and save such a bunch as a user setting), another makes it possible to set the sound parameters almost manually, and the third even allows you to load timbres through USB (see below).

The more user timbres in the synthesizer, the more personal “instruments” you can register in its memory.

The number of auto accompaniment styles (see above) originally provided in the synthesizer, in other words, the number of accompaniment options available to the user.

The more extensive this set, the higher the probability of finding among these melodies suitable options for a particular case. At the same time, the abundance of styles in itself is not yet a 100% guarantee that among them there will be a suitable one, especially since different synthesizer models can differ markedly in a specific set of melodies. So the list does not hurt to clarify before buying. Also note that the situation can be corrected by user styles (see below) — many synthesizers with auto accompaniment support them.

The number of user auto accompaniment styles supported by the synthesizer, in other words, the number of additional styles that can be stored in memory in addition to the built-in ones. Note that styles can have different volumes (depending on the number of notes used), so this parameter often turns out to be not exact, but only an average-approximate one.

Modern synthesizers may have a fairly extensive set of built-in auto accompaniment styles (see above), but even the richest set may not contain the desired melody. Thus, many models allow you to supplement the standard list with custom melodies. The addition methods themselves can be different: in some models, these melodies need to be downloaded from external media, in others they can even be composed manually. Nevertheless, the presence of user styles allows you to expand the range of auto accompaniment melodies, moreover, at the request of the user himself.

The range in which you can change the tempo of the programme played by the synthesizer — auto accompaniment, lesson tune (see above), metronome (see below), recorded sample, etc.

Pace is measured in beats per minute. Changing it allows you to adjust the speed of the synthesizer to the specifics of the situation — for example, slightly slow down the tutorial if it is too hard to master at the initial pace. The wider the range of tempo adjustment, the more options the musician has to choose from, especially in the area of very slow and very fast tempos.

Note that the traditional range of musical tempos covers values from 40 beats / min (“grave”, “very slowly”) to 208 beats / min (“prestissimo”, “very fast”), however, in synthesizers it can be more extensive — for example, 30 – 255 bpm.

The presence of a built-in metronome in the design of the synthesizer.

A metronome is a device that produces sharp sound signals (beats) at certain short intervals specified by the user. In music, such a device is used primarily to maintain a given tempo. A metronome can be useful both for a beginner musician, for developing a sense of rhythm, and for a professional, for example, when learning a new melody, especially if it is to be played without accompaniment and you will need to maintain the rhythm yourself. In addition, the sound of the metronome can also be used as an effect in musical compositions.

The presence of a mixer in the design of the synthesizer.

A mixer in this case is a device designed to control individual audio channels that make up the sound of a synthesizer as a whole. The list of these channels includes, in particular, the main voice, the layered voice (see “Dubbing voices”), several auto accompaniment channels (main, bass, drums, etc.). With a mixer, the musician can manually control these channels — turn some of them on and off, switch the timbre, tempo, key, etc. This greatly expands the possibilities for using the synthesizer.

Possibility of dividing the keyboard of the synthesizer into two parts, each of which is responsible for its own timbre of sound. Thus, on one keyboard, you can play two "instruments" at once in real time — for example, accompany the solo part of the violin with chords of a string orchestra. At the same time, unlike auto accompaniment (see above), all notes are taken by the musician himself, without relying on the automatic settings prescribed in the programme.

Usually, several “split keyboard” combinations are pre-written in the synthesizer’s memory, however, some models allow you to separately select a timbre for each half, at the discretion of the musician.