woodtest for musical instruments

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woodtest for musical instruments
Posted by: Sandro Cocco , E-mail: sandro@ccms.net, on September 30, 1999 at 06:54:01 :
Hi everybody.I am a violin maker who is trying to find a reliable method to test the quality of spruce and maple.It would be useful for me to measure the longitudinal velocity of sound .
How should I proceed? I experimented with piezo transducers located at the extremities,driven by an impulse(a small hammer!)and connected to an oscilloscope.But after just 19 inches the delay is visible but hardly measurable. What advantage would I have in using an ultrasonic frequency? And how could I measure this very short time in a numeric form? Could an impulse counter be of any use? Thanks for your attention.Sandro Cocco.

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Re: woodtest for musical instruments Thomas Adunka, Am Lorberkogel 8 A-9330-Althofen, Austria 23:10 6/04/2002 (0)

Re: woodtest for musical instruments Greg Smith 16:23:48 9/30/1999 (0)

Re: woodtest for musical instruments Tom Nelligan 15:35:14 9/30/1999 (0)

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: Hi everybody.I am a violin maker who is trying to find a reliable method to test the quality of spruce and maple.It would be useful for me to measure the longitudinal velocity of sound . : How should I proceed? I experimented with piezo transducers located at the extremities,driven by an impulse(a small hammer!)and connected to an oscilloscope.But after just 19 inches the delay is visible but hardly measurable. What advantage would I have in using an ultrasonic frequency? And how could I measure this very short time in a numeric form? Could an impulse counter be of any use? Thanks for your attention.Sandro Cocco.

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