18
1.
BEA SMP_QX_E
Out: A Low-A Level
Level = 0.0dB
Out: A Low-A Level
Level = 0.0dB
PM1
ESC
Default setting for LEVEL is 0.0dB. Range = -90dB....0dB.
In the given example, LEVEL of CHANNEL A was changed from 0.0dB to -6dB, using PM1.
LEVEL position is: post EQ - pre DSC - pre Limiter.
Enter
ESC (quit)
Out: A Low-A Limiter
Thr= OFF Rto=99:1
Out: A Low-A Limiter
Thr= OFF Rto=99:1
PM2
ESC
Default setting for the RMS Limiter is: Threshold = OFF / Ratio = 100:1
In the given example, Threshold of CHANNEL A was changed from OFF to 2.7dBu (via PM1)
Ratio was changed from 99:1 to 2:1 (via PM2)
Theshold Range is: -18dBu....2.7dBu, OFF
Ratio Range is: 2:1....100:1
Threshold
Sets the level in dBu above which the limiter begins to attenuate the input signal.
As soon as the limiter is ‚active‘, this will be indicated by the yellow LED.
Ratio
: (Example) : Threshold Level = 0dBu , Input Level = 4dBu, Ratio = 2:1
In this example, the calculation is: ((Input Level - Threshold Level) : Ratio) + Threshold Level
= ((+ 4dBu - 0.0dBu) : 2) + 0.0dBu = 2dBu + 0.0dBu = +2dBu
This means, that at an input level of +4dBu, and output level of +2dBu is to be expected.
The performance of the RMS limiter is best shown in the PC software.
Enter
ESC (quit)
PM1
Out: A Low-A Level
a
Level = 0.0dB
Out: A Low-A Level
a
Level = 0.0dB
Out: A Low-A Level
a
Level = -6.0dB
Out: A Low-A Level
a
Level = -6.0dB
Out: A Low-A Limiter
a
Thr= OFF Rto=99:1
Out: A Low-A Limiter
a
Thr= OFF Rto=99:1
Out: A Low-A Limiter
a
Thr= +2.7dBu Rto=2:1
Out: A Low-A Limiter
a
Thr= +2.7dBu Rto=2:1
Out: A Low-A Limiter
Att= 60ms Rel= 2.5s
Out: A Low-A Limiter
Att= 60ms Rel= 2.5s
PM2
ESC
The default value of the RMS Limiter is: Attack = 60ms / Release = 2.5s
In the given example, attack time of CHANNEL A was changed from 60ms to 10ms.
Release Time was changed from 2.5s in 5s. Command via PM1 and PM2.
Attack Time Range: 5ms ....200ms
Release Time Range: 0.1s ....5.0s
Attack Time
Attack is defined as the time it takes the limiter to attenuate the signal gain by a defined value.
Release Time. Normally, this value will be defined at 20dB.
Enter
ESC (quit)
PM1
Out: A Low-A Limiter
a
Att= 60ms Rel= 2.5s
Out: A Low-A Limiter
a
Att= 60ms Rel= 2.5s
Out: A Low-A Limiter
a
Att= 10ms Rel= 5s
Out: A Low-A Limiter
a
Att= 10ms Rel= 5s
Level
Level
RMS Limiter
RMS Limiter
!
RMS Limiter
RMS Limiter
