Specifications

1 Multisonic Imaging
2
F ig. 1
Conventional Sound S ys tem
F ig. 2
M ultis onic™ S o u n d S ys tem
1
Multisonic Imaging
Description
The Miles Technology Multisonic
®
Imaging System
greatly enhances the acoustic sound quality of all
stereo program sources using three loudspeakers
rather than just two.
Multisonic Imaging is an electroacoustic audio
imaging process which increases the clarity, focus,
and listening area of a stereo sound system while
using any stereo audio program source.
This is accomplished without the need for any
special encoding process. It simply relies on
amplitude panning, which is the method used on
virtually all modern multichannel-mixed recordings,
as well as many stereo-microphone recording
techniques. It adds no distortion-generating
dynamic modification or equalization. Nor does it
rely on any type of “steering”. Multisonic Imaging is
a linear, high-fidelity process that clearly and
accurately presents the content of any program
source, and is compatible with all stereo program
material, as well as any playback medium including
compact discs, cassettes, FM broadcasts, stereo
television, stereo videotapes, and surround-sound
videotapes. It also is used to great advantage for
live sound productions, whether a two-channel
stereo mixer or a discrete LCR mixer is utilized.
Stereo recordings will have increased focus, clarity,
and listening area when the Multisonic Imaging
system is used for playback. This is achieved using
a Multisonic Imager and a center loudspeaker with
comparable performance to that of the left and right
loudspeakers. The Multisonic Imager, combined
with correct loudspeaker placement, will result in
superior audio performance in every respect.
Multisonic Imaging reproduces center-panned
sound sources within the mix, such as lead vocals
and kick drums, in the center. These center-panned
sound source locations will be heard in the center,
no matter where the listener may be located or what
else is in the program mix.
Conversely, side-panned sounds radiate unmasked
from the side loudspeakers. The spatial separation
reveals nuances which can be lost in conventional
setups. More output power, more headroom and
less distortion also result through the effective use
of three loudspeakers.
Rather than forcing the side loudspeakers to
additionally reproduce the center sounds (mixed
equally into the side channels), Multisonic Imaging,
through the use of a separate center loudspeaker
for center sounds, greatly reduces the stress on all
of the loudspeakers.
Perhaps most importantly, the listening area in
which a well-balanced stereo image can be heard is
greatly increased. See
Figure 1
and
Figure 2
.
While a conventional system can provide
localization for the extreme left and right positions, it
relies entirely on producing a phantom image for the
central area of the soundstage. The phantom
image, with normal loudspeaker placement, only
works when the listener is exactly centered, the left
and right loudspeakers are well-matched, and the
room acoustics are good.
The Multisonic Imaging System provides accurate
imaging simultaneously for left, center, right, and all
in-between soundstage positions. It can be thought
of as two stereo loudspeaker pairs— left/center, and
center/right—each creating a precise soundstage.
The two halves then blend together perfectly since
they share the center loudspeaker.
For any sound source location, each of the three
loudspeakers contributes perfectly by virtue of its
relative polarity and amplitude. This process works
continuously across the soundstage for any source
location. The final result, put simply, is this: it
sounds much better!