[pianotech] SWELL was What is bloom

[Ron Nossaman]

On 3/17/2011 1:54 PM, John Delacour wrote:

> I would suggest therefore that the effect is caused by the system using
> the available energy to produce and recycle vibrations which, when the
> dampers are down, is converted into heat.

I agree. This happens in any case, in all pianos. The difference in 
those few that exhibit that swell effect is, I think, mostly soundboard 
efficiency.

I wonder at this point, how many have actually heard a piano do this.

Ron N