Thanks for that explanation of what JD was talking about. I've heard this on pianos and thought it fairly common. It seemed that the better in tune the piano was the more the strings vibrated in sympathy and gave that "bloom". dp -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Ron Nossaman Sent: Thursday, March 17, 2011 2:06 PM To: pianotech at ptg.org Subject: Re: [pianotech] What is bloom, As usual, this has gone into different directions from JD's initiating observation. Everywhere but, in fact. His post explained what he was doing. Play a chord, or even a note and, holding that chord or note, step on the damper pedal. In most pianos (nearly all) not much interesting happens. In some rare pianos, the whole thing comes alive! The impression is that the volume increases, and the sound becomes hugely rich. It swells! The first piano I heard do this was one of my redesigns. I wasn't even aware it was possible until I stumbled upon it as I was finishing it up in the shop. It's an extraordinary sound. This isn't shaping the tonal envelope with voicing. It's something entirely different, rare, and I think special. Ron N
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