SOLIDYNE 462
dsp – broadcast digital processor
Page 17
Chapter 4
Audio processing settings
4.1 PROGRAM SELECTION
The unit has 15 default programs (00 to 14) and
15 user memories.
The programs selects from the main screen. Turn
the JOG to explore the list and touch briefly to put
a preset on the air.
•
Note that, while you explore the programs, over the
program name appears the navigation instructions.
•
While these instructions are on screen, you are in the
mode “exploring programs”.
•
Selecting a program this legend disappears.
•
Touch and hold the JOG to cancel the exploration.
The name of the current on-air program returns on
screen.
THE CHANGE WILL TAKE EFFECT ON THE AIR
JUST WHEN YOU LOAD IT BRIEF TOUCHING
THE JOG.
4.2 DEFAULT PROGRAMS
562dsp/AM has 15 programs made in the
Solidyne laboratories. Next the used criterion is
described to create these programs that will be the
base for the creation of other customized.
00: AM HARD 1
01: AM HARD 2
02: AM HARD 3
03: AM HARD 4
04: AM HARD 5
05: AM MUSIC 1
06: AM MUSIC 2
07: AM SOFT 1
08: AM SOFT 2
09: AM DIGITAL
Except programs 05 and 06; the adjustment was
made on the base of a programming with
predominance of voice and dialogues.
In programs specially designed for voices the
AGC
must recover fast to compensate, for
example, a telephone communication that arrives
with low level. The hold threshold must be
relatively low, around 17 dB, to avoid that the AGC
“is hooked” and, in this way, to obtain that it reacts
quickly before any difference of level between
different voices. Remember that the objective is
that the voices always sound on the air with the
same level. The attack of the AGC also must be
fast, to make level abrupt changes of level that
can take place by shouts (discussions) or
outbursts of laughter.
The attack time of the compressors must be fast,
to contain great impulses that take place in the
beginnings of phrases, when the compressors
begin to work. If the attack times are long, can
take place excessive processing and trim of the
signal in certain entrances of the speaker; in other
words, the speaker will sound “saturated” or “dirty”
during a brief moment when begins to speak (and
after each pause grater that the recovery time).
On the recovery times there is more freedom,
reason why they will be fit according to the type of
voices of the radio. Like general rule, remembers
that long recovery times produce “a smooth”
processing, whereas with short times the loudness
is increased but the processing becomes more
“heavy” (greater compression).
Respect to the gains,
the voices do not tolerate
high multiband compression
, so if for music a
strong” adjustment is used “, for the voice the
AGC output level will have to be located around 9
dB. An excessive processing will sound
disagreeable to the ear.
AM MUSIC and AM DIGITAL are softer programs,
created for musical programming.
TAKE IN MIND
•
When creates your own adjustment for the voices,
considers that the equalizing does not have to be radically
different to the used for music. That is to say, the voice
impact program MUST BE CUSTOMIZED maintaining the
equalization used for the music.
•
Remember that you can use a special program for voices
and another one for music. When 562dsp/AM is
connected to the console with MICstart, when opening the
microphones 562dsp/AM changes its processing program
to process the voices with special adjustments.