Polyphony
The number of voices supported by the digital piano — more precisely, the maximum number of voices that the instrument can play at the same time.
This parameter should not be confused with the number of notes that can be played simultaneously on the keyboard. The fact is that in many timbres, several voices (tone generators) are used for each note at once — this is the only way to achieve a more or less reliable sound. Thus, the required number of voices can be many times higher than the number of notes — for example, the simplest chord of 3 notes may require 9 or even 12 voices. In addition, tone generators are used to play auto accompaniment parts and built-in songs (see below), and here the number of voices can already be measured in tens.
In light of all this, polyphony of less than 90 voices is typical mainly for relatively simple and inexpensive instruments that are not designed for complex tasks. The smallest number found in modern digital pianos is 32 voices. It is desirable for a more or less solid instrument to have at least 96 voices, and in top models this figure can reach 256.
In box
Additional items included with the instrument.
— Music stand. A music stand mounted above the keyboard, in front of the musician's eyes. Note that in this case, only the detachable music rest supplied with the portable instrument is meant (see "Body"); in stationary digital pianos, by definition, such a stand is available; moreover, it is often a non-removable part of the body.
— Pedal. Only portable digital pianos (see Body) can be equipped with an external pedal. stationary are equipped with built-in pedals. Note that there is usually only one such item in the kit, even if there is more than one input for the pedals. However, this cannot be called a serious drawback: situations where a musician needs more than one pedal are extremely rare. For more information about the inputs and the pedals themselves, see Connectable Pedals.
— Power Supply. Power supply for connecting the tool to the network. Even for portable tools, an outlet is often the most convenient way to power; and in stationary cases, other options may not be provided at all. Therefore, the power supply is an almost indispensable element of the digital piano package. The absence of such a block in the kit, usually, indicates that it is made built-in; however, this is rare.
— Disk. An optical disc (CD or DVD) containing various digital piano supplements. These can be instructions and other documentation, drivers for connecting to a computer, specialized software for edit...ing music on a PC, etc. Such a medium can be very useful if you need access to information or specialized software, but there is no Internet connection at the moment or there is a problem with it.
— Rack. Stand for floor installation of the tool. It is used only in portable models (see "Chassis") — stationary, by definition, do not require additional stands. Such a device, usually, is made folding, which provides ease of storage and transportation. Racks are also sold separately, but in some cases it is more convenient to buy a stand immediately, along with the tool.
