22 May
2010
22 May
'10
11:40 a.m.
Ya know, I have the equipment to do that, except the
piezo transducer that
drives the needle in the wax recorder is cracked.
Piezo transducer? To do this properly you have to use an electromagnetic
driver for recording and a carbon microphone for reproduction. Anything
else is cheating.
As it is, the wax recorder I have is an office dictating machine dating from
the 1940's or perhaps 1930's.
The crystal piezo transducer was used for both record and playback.
Ah yes... One of the machines that were around shortly before magnetic
recodings became populer.
It contains just two tubes and is conceptually very simple, but that crystal is
a very specialised part that - while perhaps not an insurmountable problem - is
not going to be particularly easy to fabricate today in a one-off instance.
I assume you couldn't use a peizo buzzer or speaker or something like that?
-tony