Telos TWOx12 - Receive (Caller) Audio Processing

TELOS TWOX12 USER’S MANUAL
DETAILED CONFIGURATION & REFERENCE
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Equalisation Characteristics of the Send EQ
Send Automatic Gain Control / Limiter
This AGC helps maintain consistent audio levels to the caller. This function is not
defeatable. This is a carefully crafted algorithm utilising a feed-forward topology
with near inaudible artifacts below the limit threshold. At moderate levels it is
“AGC-like” while at high peak levels it is “limiter-like” in its effect.
7.5.2 Receive (Caller) Audio Processing
The TWOx12’s Receive Audio Processing consists of the following functions:
• High-pass “hum” filter
• Automatic Gain Control
• Noise gate
• Dynamic equalization
• Sample rate conversion
High-pass “hum” filter
This filter removes hum and other unwanted low frequency noise from the caller
audio. This filter has a crossover frequency of 250 Hz.
Receive Automatic Gain Control
This AGC serves to improve consistency of caller audio levels. This function is very
important to effective hybrid performance as caller levels can vary by as much as 30
dB. This AGC is an advanced dB linear feed forward topology providing a consistent