Clear-Com HX System Frames - Manual (Page 226)

The Low Pass filter passes low frequencies and is used to remove high frequency noise
such as wind noise while the High Pass filter passes high frequencies and is used to
remove low frequency noise such as machinery.
Each filter has four possible settings: off, filter 1, filter 2 and filter 3.
• Off - no noise filtering is done.
• Filter 1 - uses the first noise filtering algorithm.
• Filter 2 - uses the second noise filtering algorithm.
• Filter 3 - uses the third noise filtering algorithm
The frequency filters have the following effects:
High Pass 1 - reduces audio volume below 120Hz.
High Pass 2 - reduces audio volume below 250Hz
High Pass 3 - reduces audio volume below 500Hz
Low Pass 1 - reduces audio volume above 8KHz
Low Pass 2 - reduces audio volume above12KHz
Low Pass 3 - reduces audio volume above 15KHz
The filter configuration is shown using a graphic of the frequency against level.
Figure 8-4 Audio Mixer Filter Settings
If the mouse pointer is placed over the filter graphic a tooltip is displayed giving additional
information on the filter settings.
Limiter/threshold/compressor
These settings are all linked together and provide a facility for controlling the overall level
of the input audio. The settings allow the audio level to be limited to a maximum and audio
above a threshold level to be modified as it approaches the maximum permissible level.
226 Eclipse EHX Software User Guide