User Manual
Table Of Contents
- 1. Hardware
- 2. Technology Overview
- 3. Software
- 3.1 Software Installation
- 3.2 Using the Software
- 3.3 Custom edit processing module
- 3.4 Audio Module Parameters
- 3.4.1 Input Source
- 3.4.2 Expander
- 3.4.3 Compressor & Limiter
- 3.4.4 Automatic Gain Control
- 3.4.5 Equalizers
- 3.4.6 Graphic Equalizer
- 3.4.7 Feedback Suppressor
- 3.4.8 Noise Gate
- 3.4.9 Ducker
- 3.4.10 Ambient Noise Compensation (ANC
- 3.4.11 Auto Mixer
- 3.4.12 Acoustic Echo Cancelation
- 3.4.13 Noise Suppression
- 3.4.14 Matrix
- 3.4.15 High and Low Pass Filter
- 3.4.16 Delay
- 3.3.17 Output
- 3.4.18 USB interface
- 3.5 Settings Menu
- 4. Control
- 5. FAQs
- Appendix A: Module ID Distribution
- Appendix B: Module Parameter Types (1)
ALF-DSP 88-U
-19-
Auto gain control includes the following control parameters and switches:
Threshold: When the signal level is lower than the threshold, the input-to-output ratio is 1:1. When the signal
level is higher than the threshold, the input-to-output ratio changes with the ratio control settings. The
threshold is set as the background noise just higher than the level of input signal.
Ratio: It refers to the ratio of the changes in the level of the input signal higher than the threshold to the changes in
the level of the output signal.
Target Threshold: It refers to the level of output signal required. If the signal is higher than the threshold, the
controller will compress the signal in proportion.
Attack Time: It refers to the response time required to control the level higher than the threshold.
Release Time: It refers to the response time required to control the level lower than the threshold.
3.4.5 Equalizers
The equalizer is mainly used to correct the frequency range that is overemphasized or gets lost, no matter if it is
wide or narrow. In addition, the equalizer can also help us to narrow or widen the frequency range or change the
amount of a component in the frequency spectrum. To simplify, the equalizer can be used to change the tone of the
signal.