The Bismarck tribune. [volume] (Bismarck, N.D.) 1916-current, 1925-11-02

A new era in the mechanical re
production Of sound was heralded yes
terday afternoon with the demonstra-
ton here Of the newly invented Or
thophonic Talking Machine, whose an
in musical circles. This instrument,
which is declared to represent 1000
increase Of efficiency over the old
group of musicians and critics, at a
special advance hearing in Bismarck,
arranged by Hoskins- Meyer, Victor
dealer. as a preliminary to the gen
eral public hearing tonight.
The remarkable advance represent
ed by the new instrument, which was
developed jointly by the Victor Talk
ing Machine Company and the Bell
laborat cries of the Western Electric
Company, was illustrated by playing
it in direct comparison with the old
type. The audience applauded as Sc
lection after selection bore witness
to the greatly increased range, vol
ume, and purity of tone achieved by
the new method.
The Orthophonic Talking Machine
is based upon a newly adapted prin-
ciple known as matched impedance,"
which has necessitatcd the complete
re igning Of the entire instrument.
This electrical principle, which made
possible the perfection of long dis
tance telephone communication, was
translated into mechanical terms by
the Bell laboratories Of the Western
Electric Company and placed at the
disposal Of the Victory Company. 1t
has resulted in an increase Of range,
besides doubling the potential vol
umc of the reproduction and the
clcarness with which the various in
struments and voices may be dis
tinguished.
No Fundamental Change
While the exterior Of the instru-
ment has undergone no fundamental
change. being enclosed in a hand
some walnut cabinet Of period design,
the interior is altogether different.
One of the striking features of the
new equipment is a great horn six
feet in length. which is ingeniously
folded and out of sight within the
body Of the cabinet. Above it is the
usual record, turntable and tone-arm,
the latter of new and improved con-
SlI Inc SOuhu IVA Noii-
pletely changed, a unique diaphragm
of duralumin being substituted for the
old mica disc.
The entire instrument, from needle
to horn opening. has been carefully
designed according to a mathematical
formula based upon the principle OF
matched impedance. Thus, by perfect
coordination Of the various working
parts, one to another, it has been
made possible to take the sound i'm
pulses from the needle and to con-
duet them smoothly and without dis
tortion into the air. The result is
music undiluted and undefiled.
Three Defects
Heretofore there have been three
chief defects in the talking machine
limited range, limited volume, ant
failure to bring out clearly the tone
color of the sounds recorded, thai
indefinable quality by which it i:
possible to distinguish between the
various instruments or voices ever
when playing notes Of the same pitch
These difficulties have now beef
removed. The Orthophonic Talkin!
Machine is capable Of reproducing
sounds as high as the highest note o.
the piccolo. or as low as the deepes
tone of the bass viol. 1t can renro
duce these tones as soft as whis
per, or as loud as shout. And i
can reproduce them in such wa!
that you can readily identify thu
notes of the violin, the cornet, tn
flute and every other variety of in
Strument or voice!
One of the greatest achievement
of the new method is the successful
reproduction of instruments, whic
before could not be properly record
ed
The drum for the first time sound
like drum, the harp sounds like