Sound Performance Lab Classic Vitalizer 9215 - Manual (Page 11)

11
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Control Elements The DEEP button spreads the frequency range around which the
SUB BASS is centered. Also the level is increased by +4 dB at the
centre frequency of 50 Hz.
This affects both the hard and soft bass settings giving the
choice of four possible permutations.
Equalising the mid-range signal according to the dynamics and
spectral content of the input signal, the VITALIZER improves the
focus of mid-range detail while modifying the overall signal
response curve to create an impression of increased loudness.
The degree of processing is controlled by the PROCESS DEPTH
control while the MID-HI TUNE control is used to set the lower
frequency limit at which processing will take place.
With the control set fully counter-clockwise at 22 kHz, no
audible processing will be evident as the filters are limiting
processing to those frequencies outside the human range of
hearing. However, if you turn the PROCESS DEPTH control fully
clockwise you will hear the high end starting to sound duller than
the dry signal. This effect can be used to dull out very bright
signals. By decreasing the frequency setting, the processing will
become more evident. Additionally, the lower the frequency is
set, the more obvious the effect becomes since more of the audio
spectrum is being treated.
It is generally best to start off with this control set to some-
where between 3 kHz and 6 kHz and then fine tune by ear.
Adjusting the bandwidth preset control (”Q”, inside the front
panel) changes the characteristics of the MID-HI TUNE filter. The
VITALIZER is shipped with the Q setting in its minimum position
(counter-clockwise) which is best suited to general purpose
processing. A higher Q may be selected in order to selectively
enhance certain parts of the audio spectrum such as hi-hats as
may be desirable when mastering a record or reworking an
existing recording.
If the Q control is advanced too far clockwise, the filter is likely
to oscillate. In this case the control should be backed off until
oscillation ceases. For stereo applications, care should be taken to
ensure that the Q presets on either channel are set up as similarly
as possible to eliminate the possibility of spectrally related image
shifts.
This control affects the amount of SUB BASS and MID-HI TUNE
filter signal added back into the mix and will cause certain domi-
nating mid-range frequencies to be attenuated increasing the
overall sense of loudness. Since the human ear perceives the
audio spectrum differently at different SPLs (sound pressure
levels), the VITALIZER reshapes the spectrum so as to convince the
human brain/hearing system that the sound being heard is
louder than it actually is.
Deep
Mid-Hi Tune
Q
Bandwidth Setting of Mid-Hi Tune
Process Depth
(Teil 2)