The Mankato free press., 1921-12-16
WORDS OF HARDING
CARRIED FOR MILES
Record For Long Distance
Oratory Made
GREATER POSSIBILITIES
Some Day Nations Executive
w II Be Able To Talk To a.,
Every City
fAssociated Press D.spatchl

tAssociated Press D.spatch1
New York, December l1.-Presi-
dent Harding who set q record for
long distance oratory on Armistice
day by addressing simultaneously
three great tnrongs o. more than 100.-
900 persona, gathered at Arlington
National Cemetery, San Francisco and
New York, may easily find himself
talking to an audience running high
into the millions and scattered through
every state In the union, before No
leaves the White House.
Indeed, says r. W. King one Of the
American Telephone and Company
engineers whose work on the loud
speaking device made possible the
ushertng In OF O new epoch IN space
annihilation at the ceremonies owe,
the bier of Americas Unknown Sol
dier, Il 10 well within the range Of
possibility that President Harding
may see the day when a president
can ait at ease in the White House
and talk at once to every city. town
and hamlet in the United States that
Is tapped by telephone wires. =.
An audience Of 50.000,0oo perhaps!
or 100, ,00O, ,00ol They don't even blink
at figures like that-thsse telennons ts,1|,n 1s
look, unabashed, into the faces Of a
column of cfphers, marching in three
across great open white spaces, Is
one of the prerequisites even to
thinking about that marvellous con.
trivance, the electrical amplifier, OF
which the loud speaking device -
only one in long list Of practical
applications.
electrical Current Required
"A alnrfrinal aIYront
that carried President Harding's
funeral grafton to the crowds at Ar
lington, San Francisco and New York,
was multiplied 5000, 900 0,000. .010 .o0l,
000, ,0o0, ,000, 900 times before IT rolled
out, converted into great sonorous
sound waves, over the heads Of three
audiences.
cations to convey the grafton and the
that they could have been heard
through an ordinary telephone receiv
er. They had to be amplified a mil
lien million times by the loud speaking
de- ice.
GJ.000. 600, 600, 900 of implications
.Uie necessary to bring the cere.
,cnies out clear and strong in New
Oak Ten thousand used to bring
tCI6HlOulCc uCfC, AAAAh0A-
..i.,icn to raise them to audibility for
the New York audience. The other
ilion million amplificatons were
U&ei to carry the Presidents voice
10 the Arlington crowd.
BY providing rev more scores OF
thousands of miles of wire, some
thousands of loud speaking devices
and a few foolscap sheets filled with
tiny ciphers indicating more ampi-
~ hnaT
future public ceremonies, Mr.. King
said.
II would be relatively simple, he
declared, to set up equipment in the
capitals or the forty eight states
through which 10000 persons in each
city-a total of 1900, ,000-could hear
a ceremony in Washington or else.
where as distinctly as II they were
seated within few yards OF the
speaker.
Can Produce Music Over Wire
, Canned" music, too, faces pol
teptial rival in the loud speaker. 1t
would be as simple to connect the
stage of the Metropolitan Opera
House up with the nation at large
as to connect q President, once the
equipment was set up.
Telephone engineers say the Armis-
tice Day experiment proved that mu-
sic could be reproduced over the wire
circuits at least as purely as 1t II
reproduced on the best photograph
records and that it win be matter Of
but a few years when the last vestfge
of metallic ring will be eliminated.
Mr.. King believes ii will be but a
short time too, until all the principal
public halls and large university audi
toriums are equipped at least
with local loud speakers. These he
- h4 Gyri
in on long distance, circuits carrying
public addresses and similar events
from other cities.
While the loud speaking device is
a development of the last two years.
the ampiifer which made it possible
has been in widespread use, pilins
I'D ciphers unseen on every long dis
lance telephone line in the country
since the transcontinental circuits
call from New York to San Francicco
involves 400 ,000, 900, 100000 amplifi.
cations. The number Of amplifica-
tions necessary between any two
points depends not only upon the
distance k.t upon the nature OF the
circuit.
But the principle Of the amplifier
Is not limited to telephone use.
IL
wire telegraphy; of radio telephoning;
of all long distance electrical signal
ing.
ii was the amplifier that picked up
during the war water vibrations caus :
ed by enemy submarines and translat-
ed them into sounds by which com
manders of allied warships we're able
to locate the hidden foe.
1t made possible the "fog line" In
New York harbor-tip that magnetic
ed cable leading up the channel
which properly equipped vessels can
follow in the thickest fog.
Recently it brought the first music
many of them ever heard to a New
York audience OF person OF defective
hearing.
Physicians use 1t to study the beat
ing of the human heart.
These are some Of its scores oi
uses.
"And the amplifier is stin in Its
infancy" says Mr.. King.
Speech Heard In Dallas
Texas, December 1.-THE loud
speaking device which enabled large
audiences at great distances to hear
President Harding's armistice day
speech was the same instrument put
TO many uses and tests at the Texas