Hf Limiting And Clipping; Dayparting; Processor Bypass; Test Oscillator - Inovonics 262 Installation & User Manual

Stereo audio processor
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The time-averaged value of final limiting establishes a re-
lease 'platform.' Program peaks quickly release to this plat-
form, which itself then releases at a slower rate. WB Release
sets the platform level with relation to peak gain reduction.
The platform is the solid or yellow portion of WB metering;
fast peak release is seen as the hovering segment or blue
section of the display. A default value of '0' is a safe com-
promise between 'smooth' (–10) and 'loud' (+10). Your sta-
tion programming and personal preference will dictate a
proper setting for your purposes.

HF Limiting and Clipping

FM broadcasting is a transmission system that employs
complementary pre-emphasis and de-emphasis, requiring
an independent high-frequency limiter to avoid carrier over-
modulation. The NOVIA 262 uses both HF limiting and dis-
tortion-cancelled HF clipping to meet this requirement.
NOTE: The independent high-frequency limiter is active on-
ly when the output of the NOVIA 262 is set to one of the
FM-... modes under Setup/Outputs/Output Type & Mode. With
Mode set to 20k-Flat, the HF limiter and the 15kHz low-pass
filter are out of the signal path.
HF Limit-Clip covers the range between full limiting (–10) to
mostly-clipping (+10) with '0' as the default compromise.
Full HF limiting can sound somewhat dull. But even with
distortion-reduction techniques, HF clipping can put an
'edge' on vocals and other familiar sounds. Be sure to listen
to a representative sample of your programming before set-
tling on an adjustment here.

Dayparting

NOTE: The daypart scheduler relies on at least an initial
network connection to sync with Internet time, and with the
proper time zone and other options selected. See the notes
on timekeeping on Page 26.
As many as 20 'dayparts' (changes in a station's program-
ming) may be scheduled by this built-in feature of the
NOVIA 262. Audio processing presets may be called-up for
scheduled deviations in the station's format during the
broadcast day. A station might depart from jazz music to a
big-band segment, for example, or from music to regularly
— 21 —
scheduled talk programming, or take a 5-minute satellite-
delivered news feed on the hour.
From the Processor/Day-
part menu, enter a pro-
cessing Preset that you
have selected for the
scheduled programming
segment. You may select one or more Days of the week that
the segment will air, and the Hour and Min (minute) it begins,
AM or PM.
In this example, the station airs a religious
roundtable discussion on Sunday at 11:00AM.
daypart, to return to the station's music format, will have
been set for noon.
Once a programmed daypart begins, it will continue indefi-
nitely. This makes it important to set up your 'normal' pro-
cessing as a daypart as well, programming the scheduler to
switch back when the other daypart ends.

Processor Bypass

Bypass mode simply removes the entire audio pro-
The
cessing function from the program signal path.

Test Oscillator

Engaging the Test Oscillator disconnects program audio from
the input of the audio processing section and allows you to
feed this point with a tone. Default is
the oscillator tone may be fed to the left
R only channels independently, or to both
channels.
The Frequency and the Level of the tone are both adjustable
from this menu. A Level setting of –10dB is equivalent to a
console 'zero-VU' level and will center the gain-riding AGC
function. Depending on the processor setup you may see
little or no meter action with a tone, as subsequent stages
respond primarily to program peaks.
— 22 —
A second
Off, of course, but
L only or right
L+R program

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