Re: [Harp-L] free reed physics

[sheltraw@xxxxxxxxxxxx]

Hi Joe

I need to find a free-reed physics expert. I here the field is very
competitive. Waaa. Meanwhile, if you come to ... I mean ... if it 'comes'
to you, please let me know.

Cheers,
Daniel (Smojoe wanabee)


>
> On Feb 1, 2011, at 7:23 PM, sheltraw@xxxxxxxxxxxx wrote:
>
>> Hi Joe
>>
>> I am not planning on writing a paper for publication nor am I
>> ruling it
>> out.
>
> Hi, it's just that I had seen your base (berkeley.edu) and the
> detective in me thought that you might be in education. Especially
> since your posts always seem both technical and inquisitive. :)
>
>> Presently I just want to know what the state of the art is with
>> respect to the mathematical physics of the free reed.
>
> Unfortunately I can't tell you right now. It would have to 'come' to
> me. (shhhh, I'm what some might call a savant..but don't let that out.)
> Since you are in the right area, I suggest a query aimed at the sound
> lab at Cal Tech.
> jo-jo
>>
>> Cheers!
>>
>>
>>
>>> What are you doing? a paper?
>>>
>>> Skippy D. Deaudaux
>>>
>>> On Feb 1, 2011, at 3:59 PM, sheltraw@xxxxxxxxxxxx wrote:
>>>
>>>> This is a question for the physicists, engineers and mathematicians
>>>> amongst us.
>>>>
>>>> I am looking for a concise description of harmonica physics. This
>>>> description
>>>> should include the differential equations which describe the
>>>> dynamics of the
>>>> system. My understanding is that harmonicas are classified as free-
>>>> reed
>>>> instruments so any concise description of free-reed physics would
>>>> probably
>>>> do nicely as well. My initial interest is not does not include the
>>>> dynamics
>>>> of bending notes on diatonic harps - single free-reed bending
>>>> would be
>>>> sufficient.
>>>>
>>>> My suspicion is that an adequate description of the free-reed
>>>> dynamics
>>>> would be described by coupled ordinary differential equations with
>>>> constant coefficients. One equation would Newtons Second Law
>>>> applied to
>>>> the reed and the second equation would be the Second Law applied to
>>>> the
>>>> air column which is forced through the slot.
>>>>
>>>> I have texts which give non-concise and unnecessarily complicated
>>>> descriptions. I'm looking for something better.
>>>>
>>>> Any help is appreciated.
>>>>
>>>> Cheers!
>>>>
>>>
>>>
>>
>>
>
>