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Re: [ARSCLIST] Audio compression on radio, was Re: [ARSCLIST] Libraries disposing of records
George Brock-Nannestad wrote:
> ----- yes, thank goodness! Columbia claims to have invented the heated stylus
> in 1948, but it was really Miessner, about 1922 iIrc.
Earlier than that. Universal Talking Machine (Zonophone in the USA) was
heating their stylus around 1903 or so; the purpose was to soften the
wax so that the sound wave would not be considered to be in violation of
the Bell-Tainter patent on "incising".
How accurately controlled the heating was, is anyone's guess.
Michael Shoshani
Chicago