Table of Contents
Advertisement
Using AFS (Auto Feedback Suppression) Module
Use the Auto Feedback Suppression module to eliminate microphone feedback (applies to
analog inputs 1 to 4).
We recommend using analog inputs 1 to 4 for microphones to eliminate audio feedback.
To adjust the AFS module:
1. In the Navigation pane, click DSP. The DSP (Main) page appears.
2. Click AFS.
The button turns turquoise and the AFS module page appears.
3. Click the Off button
4. Set each of the 8 bands to dynamic (Dyn) or fixed (Fix), depending on the application.
Figure 31: AFS Module – Selecting Input Fixed or Dynamic AFS Band Values
5. Define the following:
▪
Threshold (dB) – Sets the AFS activation threshold for feedback suppression.
▪
Max Depth (dB) – Sets how deep the cut per band.
▪
Notch Step Size – Sets the decrease in dB steps until reaching Max depth.
▪
Default Bandwidth (Oct) – Sets the width of the notch.
▪
Recycle Delay – Sets time period [Hours] until the filters are reused.
AFM-20DSP – Processing Audio Signals
Figure 30: Processing View – AFS Module
. The AFS module turns on
Kramer Electronics Ltd.
.
30
Advertisement
Table of Contents
