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| The 200ADLX is a full-digital-processing ALC (Automatic
Level Controller). As its name means, this product has an automatic
audio level control function together with a "limitter" and "compressor" function.
The product is designed to perform such functions with human hearing
characteristics taken into consideration. Other conventional audio
level controllers have performed audio level control based on averaged
data of input signal level, that is, by simply averaging audio signal
inputs, without giving any special concern to each signal's frequency
components. Generally, humans have a tendency to feel different volume
of sound, even if the sounds are on the same level, when these sounds
are on different frequency bands. Despite the fact that human hearings
have such tendency, conventional ALCs have neglected to take this
into account, giving impressions to TV viewers or radio listeners
that the level is overly controlled (upped or downed too much). This
problem has often invited complaints from TV viewers or radio listeners
due to too much volume in TV and radio commercials, etc.. In designing
this product, we established our original design-target, aiming at
the pursuit of the most faithful sound to the original sound, together
with the achievement of the most natural sound, both to the limit
of our best technology. Based on our state-of-the-art digital processing
technology as well as our basic technical know-how which we have
steadily accumulated over the years, we realized our concept of the
excessive-control-free ALC, which produces far more natural sound
closer to a human hearing sense. The timing and the amount of audio
level control are based on the simulated data of perception, judgement,
and movement of experienced-mixer-man, making this product the highly
intelligent ALC which is a big breakthrough from the old-concept
of other conventional ALCs. In addition, this product is designed
to be able to respond to pulse-like signals or sudden and intensive
level-changes, due to a built-in "limitter" and "compressor" function.
Furthermore, since the product is fitted with a stereo link function
and a mode selection function (Selectable among 5 mode, Announce
booth, Sub-Master control and CM bank system, and audio modes of
stereo, mono, dual language), the product can respond to wide variety
of user applications, including Announce input, News-sub out, Master
out and CM broadcasting use. Compared with our previous models, many
further improvements in functions are accomplished, such as an analog & digital
input/output interface compatibility and a counter-measure capability
against over-modulation problem caused by emphasis at the transmitter's
side. |
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