Microphone Equalisation; Microphone Fade Up And Down Times - ASL INTERCOM SMC02G Product Manual

5.7.4

Microphone Equalisation

Menu: Configuration System Router Inputs Mic/Line <I/P #nn – MIC/LINE nn>
Possible values:
System default configuration: '0dB'
A 3-band equaliser is provided on Mic/Line inputs in order to balance the input tone. This equaliser has a
shelving HF (treble) adjustment, shelving LF (bass) adjustment, and a fixed MID section adjustment.
A High Pass filter is also configurable. This would typically be used on microphone inputs to prevent
excessive 'pop' noise.
5.7.5

Microphone Fade Up and Down Times

Menu: Configuration System Router Inputs Mic/Line <I/P #nn – MIC/LINE nn>
Possible values:
System default configuration: 'Up=00' and 'Down=00'
It is possible to specify a fade up and fade down time for each Mic/Line input or Music input. This can be set
to provide the desired changeover fading, e.g. when a broadcast interrupts background music, or a lower
priority broadcast.
This is typically used on background music where a slow fade-up, in particular, is desirable.
The Fade Down time is:
•
The time it takes for the signal to fade down when turned off (un-routed);
•
The time it takes for the signal to fade down before an overriding broadcast is made in its place
The Fade Up time is the time the signal takes to fade up when:
•
Turned on (routed);
•
Override removed.
The diagram in Figure 10
audio source (e.g. background music).
SMC02G/SMC02F/Variants - Product Manual
<Zoned Fire Microphone or Paging Microphone> Audio EQ
–12dB to +12dB (1dB steps)
<Zoned Fire Microphone or Paging Microphone> Audio Fade
00 to 50 (Time in tenths of a second. Divide by ten for the time in seconds.)
illustrates the sequence of events during the enabling and disabling of a single
Issue: 02 complete, approved
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