KORG Digital Piano Concert NC-300 - Manuel (Page 48)

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❏ Be sure that your computer’s USB capability is enabled. If you are using
Windows XP: Open the Control Panel, click on System , click on the
Hardware tab, double-click the Device Manager button, select
Universal Serial Bus controllers, and check USB Root Hub .
❏ It is possible that the computer has not correctly recognized the NC-500. Go
into the Device Manager (as described directly above) and check that the
NC-500 has been recognized. If the NC-500 is listed under
Other Devices
and/or is identified as an Unknown Device , then the computer has not
recognized it. If, after reconnecting the USB cable, the Unknown Device
entry appears, the computer has not correctly recognized the NC-500.
Delete the
Unknown Device entry and then reinstall the driver (
☞
p. 40).
■
Software doesn’t respond
❏ Be sure that the USB cable is correctly connected. ( ☞
p. 38)
❏ Be sure that the driver is installed.
❏ Check that the computer is correctly recognizing the NC-500.
On Windows XP: Open the Control Manager, double-click on Sounds
and Audio Devices, click on the Hardware tab, and check that the
piano is correctly indicated.
On Max OS X: Open Macintosh HD — Applications folder – Utilities
folder, double-click
Audio MIDI Setup, click the MIDI Devices tab, and
confirm that the NC-500 appears correctly.
Please be aware that there are some computer hardware environments under
which the computer may be unable to recognize this device by USB connection.
❏ Check the NC-500 assignment settings and the USB MIDI port settings.
(
☞
p. 46)
❏ Your software or other connected devices may not support the features
offered by the NC-500. Please check the documentation for your
software and devices.
Maximum Polyphony
Maximum polyphony is the maximum number of notes that the piano is
capable of producing at a single time. If you try to play more than this limit,
the piano automatically switches off older notes so that it can sound the
newer notes. If you exceed the limit, therefore, you may notice that sounds
are dropping out or being cut off.
The maximum available polyphony varies according to the number of
oscillators and effects used to produce the sound. The piano generates each
sound using either one or two oscillators. Maximum available polyphony for 1-
oscillator sounds (such as the HARPSI/VIBES sounds) is 60 notes, while
maximum polyphony for 2-oscillator sounds (such as Grand Piano 1 [PIANO
1, Bank A] and Grand Piano 2 [PIANO 2, Bank A]) is 30 notes. The reverb effect,
when used, counts as ten 1-oscillator notes, while the chorus counts as three.
You can roughly calculate the maximum polyphony from the following formula.
Maximum polyphony = (60 – effect “notes”) ÷ oscillators
Example 1: For Grand Piano 1 (PIANO 1, Bank A), with reverb ON.
(60 – 10) ÷ 2 = 25, so maximum polyphony is 25.
Example 2: For Vintage E. P. (E. PIANO 2, Bank B), with chorus ON.
(60 – 3) ÷ 1 = 57, so maximum polyphony is 57.
When using Layered mode (playing two sounds at the same time) together
with the damper pedal and effects, choose sounds carefully with due
consideration to polyphony limits. For a listing of the number of oscillators
used for each sound, refer to the table in “Selecting a sound (Single Mode)”
on page 17.