Getting started

Follow these steps and use Auto-Duck in Real Time like a pro!

  1. Download, install and run Auto-Duck in Real Time
  2. If you purchased license click Provide license file button on startup screen and select your license file. If you don't have license click Run trial button.
  3. Click Add button in Input channels section. Select channels you want to use as ducking triggers and press Add selected button. For most use cases you want to select your microphone and/or some VoIP application on [Your-Recording-Device].
  4. Click Add button in Channels To Duck section. Select channels on which you want perform ducking (that will be applications/devices which volume will be decreased) and press Add selected button. For most game-streaming use cases you want to select your game, music player or streaming software on [Your-Playback-Device].
  5. Set Threshold (thrshld) values for selected channels. Ducking will be triggered when signal from any Input channel is greater than its threshold. Ducking will occur only on To Duck channels whose signal is greater than or equal corresponding threshold. For most use cases Input channels thresholds should be set to about 60-90% of their maximal signal value and To Duck channels thresholds should be set to small value or even zero. Proper threshold values depends on used devices (microphone), signal strength and desired ducking effect.
  6. If you have too loud or too quiet source you can enable signal suppressing (S button) or boosting (×2 button) on Input channel.
  7. You can change Input channel volume, this has no effect on signal value.
  8. Set min and max volume on channels To Duck. When full ducking occurs channel To Duck volume is decreased to min volume and increased to max volume when there is no ducking.
  9. Configure Ducking options. This features let you control smoothness of ducking process. All values are in milliseconds (1 second is 1000 milliseconds)
    • Start-fade duration - duration of fading at the beginning of ducking process. It's duration of smooth decreasing of the channel To Duck volume to its min volume. For most use cases it will be set to small value (like 10-500ms)
    • Max pause - time to wait before starting fading at the end of ducking process. Set it to relatively small value (like 100-1000ms) if you don't want frequent volume changes or set it to less than 100ms or even zero to achieve frequent volume changes.
    • End-fade duration - duration of fading at the end of ducking process. It's duration of smooth increasing of the channel To Duck volume to max volume. Values around 1000-2000ms gives you very smooth effect suitable for most use cases. Smaller values gives you more sharp and dynamic effect
  10. You can save (Save, Save As...), load (Open) and reset (New) your configuration using Project menu. You can also download sample configuration (presets) shared by other users from our Public Presets Database using More presets button. Use presets as the base for further experiments. You can also create your own presets (enter preset name and press floppy icon - save as preset) and share them with others using Share button.
  11. You can start/stop auto-ducking using Start/Stop buttons.

Feel free to experiment with different settings. You can change any parameter when auto-ducking is started, so you can adjust them all in real time to achieve desired effect. Use visual meters and actual and peak values for adjusting parameters

You can save your settings as project or as preset. The only differences between them are:

  • When saving project you can choose what should be saved.
  • When saving preset all parameters and all channels are saved
  • Preset can be shared and downloaded from the Public Presets Database (using More presets button). When sharing preset you can set name, author and choose parts of the configuration to share. Project has to be saved as preset and then it can be shared too.
  • You select file and path to save project file. Presets are saved automatically to presets folder (you can open it using menu ProjectPresetsOpen presets directory).
  • Presets are handy, because you can load them quickly using Presets drop-down list

Some useful stuff

To duck all applications not selected as Input channels or channels To Duck you can select [All but selected] as channel To Duck. You can exclude any application from being ducked by this channel by enabling Exc option on [All but selected] channel and selecting applications to exclude.

Below Start/Stop buttons there is switch Mute not selected apps - when enabled it will mute any application not included in Input channels or Channels To Duck. This option has no effect when [All but selected] channel is selected

In Settings menu you can find also some useful features:

  • Load last settings - Auto-Duck will load your last configuration on start. Enabled by default. Auto-Duck will wait for unavailable channels and catch them if they become available
  • Strict Loading - comparing method for catching unavailable channels (disabled by default):
    • enabled: all parameters must match, even window title
    • disabled: only some parameters must match.
  • Start with Windows - add Auto-Duck to Windows autostart. Needs Administrator rights. Disabled by default.
  • Stay on Top - when enabled Auto-Duck will be top-most window. This setting is not saved on exit, because it can confuse user. Disabled by default.
  • Minimize to tray - when enabled Auto-Duck will hide in the tray (near Windows clock). Double click on the tray-icon to show main window. Disabled by default.
  • Show help ToolTips after - here you can choose how long to wait before showing Quick Help on ToolTips. Default: 0.25 sec.

Remoting - ducking on 2 machines

Auto-Duck in Real Time, starting from version 2.0, has ability to perform remote ducking - signal from one computer is send to another computer, where it is used as ducking trigger. Both computers must be in LAN.

To setup remote ducking between 2 computers (A - sender, B - receiver):

  1. Run Auto-Duck on both computers.
  2. On computer B add some channel(s) To Duck. Next, add [Remote machine] channel as Input channel (it’s on the end of the channels list). Add Auto-Duck to firewall exceptions if asked.
  3. On computer A add some Input channel(s). Next, press Add button in Channels To Duck section and in new window press To other computer button. Enter B computer name (LAN name, without “\\”) or press List all computers in LAN button and select computer B from the list (Auto-Duck can freeze while searching computers in LAN). Press OK button and select newly created [Remote machine] channel. Press Add selected button.
  4. After a while connection between A and B machines should be established. Press Start button in Auto-Duck on both computers to start remote ducking on B. Data from A will be send only if signal value on channel To Duck [Remote machine] is greater than or equal its threshold.

In this way you can create more complicated multi-computer setups.

Contact us if you have any questions.


  • Make sure your machine is compatible with our software. Auto-Duck in Real Time is supported on Windows 7, 8, 8.1 and 10 with installed .NET Framework 4.0 (or later). No other software is required.
  • Uninstall, restart your machine and install Auto-Duck again.
  • IF ABOVE DIDN'T HELP try to change filename of "Auto-Duck in Real Time.exe" located in your installation directory (default is like "C:\Program Files (x86)\Auto-Duck in Real Time 2"). You can change it to anything you like as long as it ends with ".exe" and is valid filename. All shortcuts should update automatically.
    It sounds crazy but it works! If you want to get help with this process or want more info about this solution contact us.
You have probably changed/modify your computer. Your license was activated from your old machine, so we have to reset your license activation. Please contact us by mail or by contact form.
Create shortcut to Auto-Duck and change its properties to Run Minimized.
If you want to run Auto-Duck minimized on Windows startup:
  • In Auto-Duck disable "Start with Windows" option from menu Settings
  • Create shortcut to Auto-Duck in your Startup folder
  • Set shortcut properties to Run Minimized
Solution by Jon (thanks!).
In TeamSpeak go to menu SettingsOptionsCapture and change Capture mode to Direct Sound.
Some applications, like (sometimes) Spotify, create multiple channels, but they are using actually only one. You can add all of them and then delete channels without signal.
Some applications, like FireFox, use plugins for playing audio/video, so you have to add chanel similar to [Your-Playback-Device] FlashPlayerPlugin_x_x_x to use them. You can see which process is actually playing by looking into Windows Mixer.
Our trial version is fully functional but it has 10 minutes time limit. It is provided for testing purposes only and can not be used for commercial applications.
By purchasing full version you remove these limitations.
You will get the best price purchasing one Multi and two Single licenses. You can use the same e-mail address for each license.
Just wait ;] Currently I don’t have any other solution for this issue. Auto-Duck window is closing nicely but process is hanging, probably trying to close unsuccessful connections.
If you can help with this issue, please write here.

Feel free to ask us any questions!