[pianotech] SWELL was What is bloom

[bergpiano]

waves returning to the machine from reflections and phase relationships.

Dan Berg

----- Original Message ----- 
From: "Cy Shuster" <cy at shusterpiano.com>
To: <pianotech at ptg.org>
Sent: Monday, March 21, 2011 1:29 PM
Subject: Re: [pianotech] SWELL was What is bloom


One thing that's easy to measure with an ETD is how the amplitude of 
different partials changes over time.

For example, with TuneLab, hit "Zoom wide", and play a tenor or bass note. 
Usually the amplitude of the higher partials goes up within a second or two, 
before dying down.

We've been drawing volume graphs with just axes: volume and time. Maybe we 
need a 3D graph: volume X time X frequency?

--Cy--

Cy Shuster, RPT
Albuquerque, NM

www.shusterpiano.com
www.facebook.com/shusterpiano