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From
Address
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Y-o1k €lty
Date
A NEW .,TELHARMONIUM.,,_The
..Telharmonium,,,
an.invention
for the proituction ot muJc
tl;nio;"*
, certain alternating
current
"".uiu""",
.ui-ol":lr:.',l"El"-::;"f,:i*T
. a terephone
X'eb. 28, 1907, as installed at
Jgth S,-"""i-"ll"U*"r,
New York City. The inventor,
Dr. Thaddeus Cahill. ot
Holyoke, Mass., has now comptefed
ffiffia##;
ment which is the larsest ,,t"rnu._ori,il,,
4
;;;":;Jrl:;.
This is now ttesribed in th
:1:l:.i1i"Frj"*$1",""';'i::,*?i"Tl'j;.
or,ekeyboard,
tbe.tessloun *"u-"i"*,"" ""oi;"#"ilJ ;'
-a -ieariiingeineir{has been pfevenl-etfTy
This "robbing"
of the electrical circuits to €liminate the effects of the
reactions of the many circuits aoting together on the
A new receiver has 'been alesigned, having a
receiyer.
diaphragm some ten times the tliameter of a telephone
Due to the arreceiyer but only three times as thick.
of the eBersising magnets antl of the air par-rangement
it is
sages, a single receiver respontls satislactorily,
claimeil, to any sound from deepest bass to highest treble'
to a single note of a pure tone or to a full choral of composite tones. The many generators are built of greatly
increased capacity, especially in the high-frequency machines for protlucing the higher pitcheal notes. It was
noteil in the earlier article in Engineering News that the
"voices" of various orchestral instruments coultl be re"telharmonium,"
with a numproducetl.
In the latest
ber of switchboartls and keyboartls fot several musicians,
there has been possible an approach to orchestral tones
and a departure from the limitation to organ or single
instrument
tones alone.