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User Manual – Sound generation parameters
STRING RESONANCE
Range: -50...0...+50
NRPN MSB=0, NRPN LSB=9
Data Entry MSB Range: 14...64...114
Allows you to control the amount of resonance of strings at their fundamental or overtone frequencies when other
strings are sounded.
When one or more notes are played on a piano, the vibration is transmitted to all piano parts including the strings that
are not played. Such vibration causes such passive and un-damped strings to slightly vibrate because of a physical
phenomena known as sympathetic resonance. This natural effect replicates exactly what happens inside an acoustic
piano giving beauty and realism to the generated sound.
To evaluate the parameter's effects, play a chord on the lower octaves, pianissimo, and while keeping the chord
pressed, play some of the highest notes. The highest the parameter value, the stronger is the resonance of the lower
strings when palying high-pitched notes..
DAMPER NOISE
Range: -50...0...+50
NRPN MSB=0, NRPN LSB=10
Data Entry MSB Range: 14...64...114
Adjusts the mechanical noise produced by the motion of the damper.
In the acoustic piano the sustain pedal (or, damper pedal) lifts the dampers from all keys, sustaining all played notes.
Whenever this pedal is pressed or released a typical noise is emitted by the plucking-like effect of the damper felt on
the strings. Moreover such noise is further reverberated because of the resonant characteristic of the piano
construction.
DAMPER RESONANCE
Range: -50...0...+50
NRPN MSB=0, NRPN LSB Range =11
Data Entry MSB Range: 14...64...114
Allows you to control the amount of resonance of all piano strings at their fundamental or overtone frequencies when
the sustain pedal is pressed and some strings are sounded.
When one or more notes are played on a piano the vibration is transmitted to all piano parts including the strings
corresponding to keys that are not played. When the sustain pedal is pressed all dampers are lifted, therefore all piano
strings are able to respond to the energy emitted from played notes, as a result they start to slightly vibrate because of
a physical phenomena known as sympathetic resonance. This natural effect replicates exactly what happens inside
an acoustic piano giving beauty and truthfulness to the generated sound.
To better appreciate the DAMPER RESONANCE effect, play a chord at fortissimo on the highest octave, then repeat
the chord with sustain pedal pressed. In this last case in addition to the played notes you will hear a background
sound like a reverb. This is the DAMPER RESONANCE effect produced from the sound generated by all the piano
strings excited from your chord.
DAMPER SIZE
Range: -50...0...+50
NRPN MSB=0, NRPN LSB=12
Data Entry MSB Range: 14...64...114
Allows you to control the damper dimension that influences the release time of the piano notes.
Each of the first 67 notes (from A0 up to F#6) is equipped by a damper that has the purpose to stop the sound when a
key is released. The damper is made by a felt that, when it is in contact with the string, absorbs the vibrating energy
causing the end of the sound. The damper size affects the release time of the sound: large dampers absorb more
energy causing shorter release time; small dampers absorb less energy causing longer release time; In the following
animation you can see how the damper size change.
The effect of the DAMPER SIZE parameter is more pronounced on the bass section were the release time is longer.
STRING LENGHT
Range: -50...0...+50
NRPN MSB=0, NRPN LSB RANGE=13
Data Entry MSB Range: 14...64...114
Allows you to change the decay time of the sound.
On a typical concert grand piano the length of the 88 strings vary from about 2m to 5cm. The STRING LENGTH is
related to various sound parameters. One of the perceived effects is the duration of the sound, since the longer the
string, the longer the decay time. The STRING LENGTH parameter allows you to change the sound duration of all
strings.
STRING ABSORPTION
Range: -50...0...+50
NRPN MSB=0, NRPN LSB=14
Data Entry MSB Range: 14...64...114
Allows you to change the period of the brightness of the sound.
EN - 7
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