"Backed up"? Can you rephrase this? Do you mean noise when you lift the key - possibly some noise meant to reproduce the "thud" of the keys when you lift? Or do you mean something else?

I do not have the set - so I'm shooting in the dark here. If I, above, described what you don't like -- I'm sure you can save off of user version of the piano sound and either delete that waveform (element) altogether or there is probably an assignable knob to turn that down/off - which can (assuming the control is there) also be saved in a user copy of the performance(s).

Hi, thank's for your reply!
The noise is a real rust. It's is generated when I playing the piano, after a few seconds, alwais.

Still too broadly defined to be of much help here. Try listening to the piano on headphones to see if the "rust" is still there through phones. This would hopefully eliminate your/your friend's speakers/sound reinforcement as a possible contributor to the unwanted "noise".

Hi Giovanni the Amercan Grand piano sound set is realy one of the best sounding piano libraries, i own all 10 other piano sets for The motif xs - xf series and theye all also work fine. I MUST SAY THE GRAND AMERCAN PIANO SET IS REALY THE BEST IN MY EARS , AND I DO NOT HEAR ANY unwanted "noise". TRY TO CHNGE WITH THE EFFECT KNOBS TO PERSONALISE the sounds you prefer. !!!

Hello everyone! Thanks for your help. Today we have made new tests. We have tried listening from the headphones. The noise is on the every sound of the grand piano library. Nothing changes. Unfortunately, turning the knobs will only change the effects. The Monty firmware is updated to 1.60 version. The headphones are Beyerdinamic DT770Pro.

I'm not sure if that library has damper resonance - which is an effect - so you can turn this off. As an experiment - press the "FX" icon in the upper-right of your touchscreen - then turn OFF all 3 effects levels. This will produce a "dry" sound meant only for experimentation. See if the background noise goes away.

No way. For example, I insert a .wav recording using the Monty USB direct audio recorder.
https://drive.google.com/file/d/0B25-Lgi57Zeybk1xd3pzazFsNTQ/view?usp=sharing

Not sure what I'm listening for. Maybe someone else can comment on what they find objectionable with the clip.

Ok. Thank you, I hope comes someone ...

It's nice to know someone out there understands this Piano Library...... These are the responses received from developers (no comment..):

from supportreply@yamaha.com

Synthogy Support

_______________

Even with your sample (recording) - I don't hear anything that stands out as objectionable. Is there a MM:SS (minute, second) marker on the recording where you can point out the worst example of what you're hearing with some description of exactly what is objectionable in that second of the recording?

I just haven't seen an isolated example that I can follow as having some problem. Granted - I'm not listening to this in the most hi-fi manner so there is some "attenuation" going on on my side. But I was hoping this kind of listening environment would bring out the worst offender so I could put my finger on what's bad -- this was not the case.

I certainly do not hear anything like an encoding error, digital distortion, or something grossly "wrong". There were no strange transients. No bursts of volume. No hum. "Rust" and "backed up" were difficult to translate into anything I could listen for.

if you listen it in your headphones, you can hear it from the first few seconds (noise swish ... sssssssssssssss).
Thanks anyway. I will continue to play my VST and my Nord Stage e Nord Electro for acoustic pianos.
See you later!

Giovanni wrote:

if you listen it in your headphones, you can hear it from the first few seconds (noise swish ... sssssssssssssss).

I can hear it only when I have the phones volume to the maximum.
At a normal level isn't audible in my Audio Technica ATH-M50X.

If this is hiss at high volume - you may be able to change the behavior by setting the USB gain (+6dB, +12dB) for USB 1-30.

Depending on the source - it may make things better or worse (which is why I say "change" vs. "fix").