Del writes: << Indeed, in a typical "modern" >concert grand the keys in the bass up through the mid-range will >have fully bottomed somewhat before the hammer begins to move. From >that point on energy is moving through the system and is being >delayed by the compression and flexing of the various action >components.... >> Greetings, After studying Askenfelt's measurements, I understood that in forte playing the key bottomed out before hammer/string contact was made, but I didn't see it as happening before hammer movement. perhaps I have misread his graphing. Does it really show that keybottom is reached before hammer movement? I am taking hammer movement to occur with jack motion . Anyhow, action timing of events can be found at this address: <A HREF="http://www.speech.kth.se/music/5_lectures/">Five lectures on the Acoustics of the piano</A> Ed Foote RPT www.uk-piano.org/edfoote/ www.uk-piano.org/edfoote/well_tempered_piano.html
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