Kurzweil K2661, Справочник музыканта

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Appendix F
SD Piano ROM Option
SmartMedia Contents
The objects for ROM3 (SD Piano) are included on the SmartMedia card that comes with your
K2661. The procedure for installing the objects is described in the installation instructions that
came with your SD Piano option kit.
Sympathetic Vibrations
When you play a chord on an acoustic piano and hold down the keys while the notes decay, the
dampers on the corresponding strings remain up, and you hear a particular set of harmonics
that evolve from the undamped strings. You don’t hear any signi
fi cant harmonics from the other
strings.
If you play the same chord and hold it with the sustain pedal, you’ll hear a much different,
richer set of harmonics as the notes decay. That’s because
all the strings are undamped, and each
string gradually begins to vibrate at its resonant frequency, in response to the vibrations of the
strings struck by the hammers.
This phenomenon is called sympathetic vibration, and is an important component of the sound
of an acoustic piano. The most noticeable of these sympathetic vibrations come from the strings
whose fundamental pitches match the harmonics of the strings that were struck by the
hammers.
To create a more realistic acoustic piano sound for the SD Piano option, Kurzweil sound
engineers have developed special effects settings that imitate sympathetic vibrations. When
you’re playing one of the SD Piano programs with ID 700–713, and you’re not using the sustain
pedal, the K2661’s audio signal passes through FXBus 1, then to the AuxBus, which applies a
typical room or hall reverb.
When you use the sustain pedal, the signal passes FXBus 1 and FXBus 2 before going to the
AuxBus. FXBus 2 applies a chain of reverbs programmed to resemble an acoustic piano’s
sympathetic vibrations.
You can use the Data slider (or any physical controller sending MIDI 6) to adjust the level the
sympathetic vibration effect.
Modifying SD Piano Programs
If you want to change the room ambiance on an SD Piano program without losing the
sympathetic vibration effect, use the Studio Editor to assign a different effect on the AuxBus of
the studio used by that program. If you want to remove the sympathetic vibrations, remove the
effect from FXBus 2.