Editing Clavinova (section)

==Graded hammer==
The various ''graded'' or progressively ''weighted'' keys are:<ref>{{cite web|title=Yamaha FAQ|url=http://faq.yamaha.com/us/en/article/musical-instruments/keyboards/digitalpianos/cvp_series/cgp-1000/199/6575/|website=Faq.yahama.com|access-date=14 July 2012|archive-date=4 August 2012|archive-url=https://web.archive.org/web/20120804184137/http://faq.yamaha.com/us/en/article/musical-instruments/keyboards/digitalpianos/cvp_series/cgp-1000/199/6575|url-status=live}}</ref>

* ''Graded Hammer Standard'' (GHS), formerly ''Hammer Effect'' (HE) or ''Action Effect'' (AE)
* ''Graded Hammer'' (GH or sometimes GHE), somewhat heavier than GHS. GH is also closer to the weight of real piano keys.
* ''Graded Hammer 3'' (GH3), like GH, but GH3 incorporate a third sensor, thus making the key respond more like "grand piano" behaviour. GH3 allows the player to trigger the sound when depressed a second time, even when the note is still decaying, and the player has not completely released the key after the first push of the key. This makes some techniques such as a soft legato "trill" easier to execute.
* ''Graded Hammer 3X'' (GH3X) keyboard features an "escapement" mechanism that reproduces a slight clicking sensation near the bottom of the key travel. It has been designed in such a way that the click is discernible only on the lightest keystrokes, similar to the keyboard of a grand piano.<ref>{{Cite web|url=https://europe.yamaha.com/en/products/musical_instruments/pianos/clavinova/clp-535/index.html|title=CLP-535 - Overview - Yamaha - Other European Countries|website=Europe.yamaha.com|access-date=8 April 2021|archive-date=13 November 2021|archive-url=https://web.archive.org/web/20211113094015/https://europe.yamaha.com/en/products/musical_instruments/pianos/clavinova/clp-535/index.html|url-status=live}}</ref>
* ''Natural Wood'' (NW) is graded like the GH3 but also uses [[spruce]] wood to make the feeling even closer to that of the acoustic [[grand piano]].
* ''Natural Wood X'' (NWX) provides the keys of the NW keyboard, yet also has escapement, giving an even more accurate feel.
* ''GrandTouch Keyboard'' has a longer key length. The longer distance between the edge of the key and its pivot point means that it requires less strength to push down.<ref>{{Cite web|url=https://www.reidys.com/blog/yamaha-clavinova-clp645-vs-clp675-what-is-the-difference/|title=Yamaha Clavinova CLP645 VS CLP675: What Is The Difference?|website=Reidys.com|date=16 February 2020|access-date=8 April 2021|archive-date=18 February 2021|archive-url=https://web.archive.org/web/20210218081257/https://www.reidys.com/blog/yamaha-clavinova-clp645-vs-clp675-what-is-the-difference/|url-status=live}}</ref>
* ''88-key Linear Graded Hammers'' provide 88 levels of gradation (each key has its own weight). With NWX, it has the most accurate feel of any of the Clavinovas, although also found on some NW keyboards.