Output Limiters - PROEL DSO26 User Manual

DSO26 User Manual

Output Limiters

High performance digital limiters are provided for each output with control over attack time,
release time and threshold level parameters - see page 23 for details. This level of control
allows the user to balance the required subjective quality of the limiter against the driver
protection requirements. It does also mean that an incorrectly set limiter may sound awful!
In particular, as with all limiters, using too fast an attack or release time will result in
excessive low frequency distortion. In the 'Design a Xover' sub-menu there is an option for
automatic limiter time constants.
In this mode the time constants will be automatically set from the Highpass filter frequency
according to the table below.
The time constants are set by the high pass filter frequency for that channel.
High Pass Filter
<10Hz – 31Hz
31Hz – 63Hz
63Hz – 125Hz
125Hz – 250Hz
250Hz – 500Hz
500Hz - 1kHz
1kHz – 2kHz
2kHz – 22kHz
Auto Attack Time
45mS
16mS
8mS
4mS
2mS
1mS
0.5mS
0.3mS
34
Release Time
x16 (720mS)
x16 (256mS)
x16 (128mS)
x16 (64mS)
x16 (32mS)
x16 (16mS)
x16 (8mS)
x16 (4mS)