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T. Rob Brown trobbrown at me.com
Mon Jun 16 09:44:24 CDT 2014


On Jun 16, 2014, at 10:36 AM, David Rossell <davidjohnrossell at gmail.com> wrote:

> But some beans barely make a cracking sound at all, and others are quite
> pronounced.  I swear, sometimes in the Behmor, it's not so much a crack as
> a phht sound.  : )
> 
> Could be a tough engineering problem!
> 
> 
> 
> 
> On Mon, Jun 16, 2014 at 10:34 AM, Barry Luterman <lutermanb at gmail.com>
> wrote:
> 
>> Yes or to put it another way. You are measuring the actual event (crack)
>> rather than a measure of a related event (temp) and then inferring about
>> the evem from the measurement.
>> 
>> 
>> On Mon, Jun 16, 2014 at 6:26 AM, Ben Treichel <J.W.Bullfrog at gmail.com>
>> wrote:
>> 
>>> Different purpose, since at best we measure the temp of the bean mass,
>> and
>>> at worst the input air temp, The sound of the crack indicates a roasting
>>> event, which is not necessarily temp dependent; time and time is a better
>>> indicator.
>>> 
>>> 
>>> On Mon, Jun 16, 2014 at 8:15 AM, David Rossell <
>> davidjohnrossell at gmail.com
>>>> 
>>> wrote:
>>> 
>>>> 
>>> 
>> http://scitation.aip.org/content/asa/journal/jasa/135/6/10.1121/1.4874355
>>>> 
>>>> Why that would be better than a thermometer to measure bean
>> temperature,
>>>> I'm not sure . . .
>>>> 
>>>> David
>>>> 
>>>> --
>>>> David Rossell
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>>>> 
>>> 
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> 
> 
> 
> -- 
> David Rossell
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