AutoFocus is a tool designed to automate the process of changing Sample Rate and Buffer Size in the Focusrite Notifier device settings. I made it because a lot of different programs change those settings when launched and then you have to manually change them back to prevent crackling in VoIP software (e.g. Discord).

• Windows (only tested on 11)
• Focusrite Notifier (comes bundled with Focusrite Control)
  • make sure you have it set to launch at startup

Download the latest version from Releases.

You can use AutoFocus via the command-line interface. Here is a basic example:

AutoFocus.exe -s 48000 -b 128

This command sets the Sample Rate to 48000 Hz and Buffer Size to 128 (default).

• -s, --sample-rate <rate>: Set the sample rate (in Hz). Default is "48000".
• -b, --buffer-size <size>: Set the buffer size. Default is "128".
• -n, --notifier-path <path>: Absolute path to 'Focusrite Notifier.exe'. Default is "C:\\Program Files\\Focusrite\\Drivers\\Focusrite Notifier.exe".
• -a, --notifier-args <args>: Arguments to pass when launching 'Focusrite Notifier.exe'. Default is "40000".
• -f, --from-tray: Try launching Focusrite Notifier using the tray icon. Default is false.
  • -t, --check-tray: Check for Focusrite Notifier icon in non-hidden tray icons. Default is false.
  • -x, --check-hidden-tray: Check for Focusrite Notifier icon in hidden tray icons. Default is true.
• -w, --waitAfterSample, How long to wait after changing Sample Rate (Notifier often freezes). Default is 500.

Debug logs are stored in %LOCALAPPDATA%/AutoFocus/Logs/*.txt

• .NET Core 7 (C#) for good Windows integration
• FlaUI (UIA3) for UI automation
• CliFx for CLI functionality
• Serilog for logging

Licensed under the MIT License. See LICENSE.md for details.

Thank you:

• Authors of the packages I used
• Stack Overflow
• Focusrite for making great audio products, please don't sue me 🙏.