Invert: The signal phase is processed by 180 degrees.
Phantom power supply: used for condenser microphone power supply, please do not turn on line input or
non-condenser microphone to prevent burnt;
Test signal: including sine, pink, and white noise. Enabling the test signal system will automatically shield the analog
input signal;
4.2 Expander
The Expander is a dynamic range of input that increases according to the user's requirements.
When the input signal is less than "threshold", the expander compresses the input signal according to the set "ratio",
output level = threshold-(threshold-input level)/ratio; when the input signal is greater than "threshold", then According
to 1:1 output, output level = input level.
Pass-through/Enable: Whether the extender is valid.
Ratio: The number of decibels that the expander input signal changes dynamically/the number of decibels that the
expander output signal changes dynamically.
Start-up time: the time required for an input signal less than the "threshold" of the expander to enter the expanded
state to output according to the set expansion ratio.
Recovery time: The time required for the input signal to return from the expanded state to the original non-expanded
state.
