Highpass Filter Page; Limiter Page; Notch Filter Enable Page (Requires Ifb Audio Option); Notch Filter Frequency Page (Requires Ifb Audio Option) - Zaxcom ZFR100 User Manual

Zaxcom Miniature Digital Recorder User's Manual____________________________________Chapter 2

Highpass Filter page

HIGH PASS: OFF
Page purpose:
Parameters:
(valid range:
OFF

Limiter page

LIMITER: OFF
Page purpose:
Parameters:
(valid range:
OFF
NOTE: This page applies to the mic input only. It does not come into play for the STAxxx.
When the input signal is too high for the gain setting, it is clipped and results in distortion and popping. The limiter
is used to prevent clipping by beginning to engage at the specified value. When using a microphone, normally you
would enable the limiter. However, if the input signal is coming from a mixer that is using a limiter, you should
disable this limiter.
Since it is implemented in the digital domain, the automatic limiter may engage even when you don‟t hear any
substantial audio. The purpose of the limiter is to prevent the mic preamp from over-driving the A/D converter,
so the limiter operates on audio before it has been processed by the highpass filter. If there is a massive amount
of low frequency audio content being filtered out, such as wind noise, you may hear the effects of the limiter
without hearing the audio that caused the limiter to engage. If this occurs, the gain is set too high and you must
reduce it to below the level that triggers the limiter.
1K Notch Filter Enable page
1K NOTCH FILTER
OFF
Page purpose:
Parameters:
Before you hand out any ERX receiver, turn „ON‟ Tone at your bag/cart, enable this page and go to the next page
(1K Notch Filter Frequency
eliminated or minimized.
NOTE: Minimized ... you say? Some tone generators do not output a pure 1 kHz tone. They may be off in
frequency and/or include harmonic frequencies.
1K Notch Filter Frequency page
1K NOTCH FREQ
1000 HZ
Page purpose:
Parameters:
This page maintains the cutoff frequency for the highpass filter.
30 220Hz
to , value step:
This page manages the limiter function.
-2dB -30dB
to , value step:
(requires IFB Audio Option)
This page enables/disables the 1 kHz notch filter to prevent Tone from harming the listener.
OFF ON
[ ] / [ ]
page) to adjust the frequency this notch filter is blocking until the tone has been
(requires IFB Audio Option)
This page sets the frequency that is blocked by the previous page
960 1040 HZ
(valid range: to
10
)
1
)
2
, value step: )
25
(1K Notch Filter Enable page).