[CAUT] Accujust and grunting fish bait

[Delwin D Fandrich]

Did I say that? No. There are always losses in an energy transfer and this is no
(perpetual motion) exception.

ddf 

| -----Original Message-----
| From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On 
| Behalf Of David Ilvedson
| Sent: May 08, 2009 10:36 PM
| To: caut at ptg.org
| Subject: Re: [CAUT] Accujust and grunting fish bait
| 
| So the energy in the vibrating string is equal to the energy 
| of the vibrating soundboard?
| 
| David Ilvedson, RPT
| Pacifica, CA  94044
| 
| ----- Original message ----------------------------------------
| From: "Delwin D Fandrich" <del at fandrichpiano.com>
| To: caut at ptg.org
| Received: 5/8/2009 11:41:48 AM
| Subject: Re: [CAUT] Accujust and grunting fish bait
| 
| 
| >David,
| 
| >The sound created by the strings is not made louder by the 
| soundboard. 
| >The sound we hear coming from the soundboard is fresh new sound.
| 
| >Yes, the mechanical vibrations along the string do create a minute 
| >amount of sound--as can be expected given the string's 
| minute surface 
| >area. You can hear this sound if you make a single-note model and 
| >strike a taut string (or a set of
| >strings) pulled to some appropriate tension. But this sound 
| created by 
| >the strings is very weak.
| 
| >It is not until the strings are coupled in some manner to a 
| >soundboard--typically through a bridge--and those mechanical 
| vibrations 
| >are able to physically move soundboard that the bulk of the sound we 
| >hear coming from the piano is created. This sound is created by the 
| >soundboard. It is not the sound created by the string that has been 
| >amplified--it is all new sound. Technically one could say that the 
| >sound created by the soundboard is added to that created by 
| the strings 
| >but the amount of sound created by the strings is so small 
| it is usually ignored.
| 
| >ddf
| 
| >| -----Original Message-----
| >| From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] 
| On Behalf Of 
| >| David Love
| >| Sent: May 08, 2009 6:46 AM
| >| To: caut at ptg.org
| >| Subject: Re: [CAUT] Accujust and grunting fish bait
| >| 
| >| OK agreed that people should understand the concepts and 
| express them 
| >| clearly but while transducer does describe the function of the 
| >| soundboard assembly converting one form of energy to another, it 
| >| doesn't describe the phenomenon of that the sound is made louder.
| 
| 
| 
|