Description:
The dbx limiter object controls the input signal if signal level crosses threshold level. The dbx limiter has an optional processing called Peakstop+ processor which further compresses the output signal from RMS limiter.
It operates as an RMS limiter during normal operation and when you enable Peakstop plus parameter it acts as a peak limiter.
The number of audio channels it can process is configurable in SFD and each channel has its own set of specifications.
In GTT, the dbxLimiter exposes the following parameters for each channel of the limiter
Tuning Parameters:
| Parameter Name | Data Type | Default Value | Range | Note |
| Threshold | float | 0 | -60.0 – 0.0dB | Level of the dbx limiter activation. |
| Attack time | float | 10 | 0.1 – 200ms | Time needed to limit signal to the target value. |
| Hold Time | float | 0 | 0.0 – 500 ms | Time for which the signal is “held” at threshold even though the input has fallen below threshold. |
| Release | float | 50 | 5.0 – 360.0 dB/s* | The rate at which the release process happens. Release is when the limiter stops compressing/limiting the signal. |
| Overeasy | float | 0 | 0 – 100 dB** | The half width of smooth transition band around threshold point. |
| Peakstop Plus | ULong | 0 | [0,1] | When this flag is set, Peakstop+ processor gets enabled. |
| Overshoot | float | 2 | 2 to 12 | In Peak Mode, the output signal will not exceed the level set by overshoot. |
| Bypass | ULong | 0 | [0, 1] | When this value is equal one the dbx limiter is transparent. |
| Automode Enable | ULong | 0 | [0, 1] | When this value is equal to one, the dbx limiter algorithm sets the Attack, Hold, and Release parameters in real time based on the incoming signal |
| ChannelLinkId | ULong | Channel number | [0, numChannels] | This parameter indicates the channel that is linked to the current channel. The maximum RMS values of the current and the linked would be considered for the limiting |
Streaming:
| Parameter Name | Data Type | Default Value | Range | Note |
| Threshold meter | Float | 0 | 0 to 2 | Indicates the level of the signal after compression |