b. What settings should I use for the AN-001T?
It should help to explain what each setting does
and then how to apply it:
1. AN ON
- Turn the AN-001T sensing function on
for that channel.
Note:
Each AN-001T
incorporates 2 channels of ANC processing
2. PHANTOM
: Turns on a 24VDC phantom
power supply required by the AN-9001. While
other (non-phantom) mics may be used for this
function, the AN-9001 is optimized to perform
with this module.
3. ANC LEVEL:
Sets the noise sensing threshold.
This is the level at which the AN circuit
reposponds to the incoming noise. This should
be at or above the level of backgroud music.
4. RANGE
:
MAX
-Sets the maximum level which
the AN circuit can adjust to.
MIN
- Sets the
minimum level the AN circuit will adjust to. This
function acts somewhat like a “LIMITER”
prevent the output from becoming too loud or
too low.
5. SAMPLE TIME
: Sets the minimum amount of
time the ambient noise level must exceed the
sensing threshold in order for the AN circuit to have any effect. This is used to prevent
“false” triggering by intermittent or transient sounds, such
1
8
7
6
5
4
3
2
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as a brief loud noise or
ratio for the number of dB of input (noise) and the
B.
l about). Therefore the music level is automatically
el
N
control different
or to
y
guards to “listen in”
unauthorized activity.
someone shouting.
6. RATIO
:
INPUT SIGNAL
: Sets the
resulting change in dB of output.
a. For example: A 3:3 ratio (default setting) means that for every 3 dB of noise
input increase, the output level of the background Music is increased by 3 d
b. A negative ratio may also be chosen. This has the effect of decreasing the
output level in response to an increase in noise level. A restaurant or nightclub
owner may decide that, if the conversation at the bar is getting louder, he does
not want the background music to compete with it (since after all, conversation
is what being at the bar is al
lowered rather than raised.
7. OUTPUT CHANNEL:
Set the output chann
to be controlled by that channel of the AN-
001T. As previously mentioned, several A
channels may be set to
output channel levels.
8. MONITOR OUTPUT:
An unused Line Output
on the 9000 may be assigned as a monit
say, a security office speaker. While the
audio picked up by the sensing mic is not
meant to be fed through the speakers, it ma
serve to allow security