Tap tone test , top plate

[uguntde]

2 minutes ago, David Beard said:

No.  Depends on material and state of material, temp etc.

 

In some materials like spruce it also depends on direction in relation to the wood structure.

how do you measure it?

[David Beard]

18 minutes ago, uguntde said:

how do you measure it?

I don't.  I look up on line to see what others have measured.

[Bodacious Cowboy]

3 hours ago, uguntde said:

Isn't speed of sound always 1300km/h?

That's just (approximately) the speed of sound in air at room temperature. It varies between different gases, let alone solids, liquids. It's why your voice goes squeaky when you inhale helium. 

[Davide Sora]

4 hours ago, uguntde said:

how do you measure it?

Lucchi meter if you are rich, or use the much cheaper system suggested by Don Noon

https://maestronet.com/forum/index.php?/topic/321492-ridiculously-easy-way-to-measure-speed-of-sound/

 

[Marty Kasprzyk]

On 6/3/2022 at 5:27 PM, David Burgess said:

I hope most of you watched the Oberlin Acoustics Online Seminar presentation today. Lots of the things which have come up in this thread were addressed and discussed. Sam Zygmuntowicz was the main presenter, but there was a lot of input from some other really successful makers, as well as from some highly respected fiddle acoustics researchers.

I was impressed with his systematic data entered on a spread sheet for all his instruments in chronological order. And his efforts to see if patterns or trends were emerging on works better or worse.

Nice interplay of objective numerical physical measurements with subjective impressions.

[Marty Kasprzyk]

On 6/3/2022 at 7:27 PM, Marty Kasprzyk said:

Does "Linky windy"  mean what's the web site?

https://www.youtube.com/channel/UCb8nC_6JQtlqal0-bVQZMeg

Sam's presentation today will probably be listed in a few days.

 

[Marty Kasprzyk]

On 6/3/2022 at 7:27 PM, Marty Kasprzyk said:

Does "Linky windy"  mean what's the web site?

https://www.youtube.com/channel/UCb8nC_6JQtlqal0-bVQZMeg

Sam's presentation today will probably be listed in a few days.

Sam's talk is now on  youtube with the above site.  

[John_London]

On 5/27/2022 at 4:32 PM, jacobsaunders said:

I look forward to hearing from you after you've read the part about "Dazio" (p 133 in my copy)

Dazio is one of the funniest stories. The book is full of instructive and amusing anecdotes about the violin trade. The most shocking is the Turkish dealer who bought a violin collection, and as the train was leaving threw all the French instruments, including a Vuillaume, out of the window, saying "you can't travel with ballast".