What did I say? A background voice recorder

What did I say? is a software that continuously records audio from an input device (e.g. a microphone) and saves it to disk on demand.


  • continuously record audio from an input device
  • discard audio after a configurable time span
  • keep the recorded audio in memory only
  • run in the background (no window, just a notification icon)
  • write to disk upon request (WAV format)

Possible usages:

  • take notes during brainstorming when someone said something interesting
  • provide evidence in cases of defamation or sexual harassment
  • “pilot recorder” / “black box”


Command line options:

  • -s: Sample rate (44100, 22050 or 11025 Hz)
  • -b: bits per sample (16 or 8 bit)
  • -c: channels (1 = mono, 2 = stereo)
  • -t: recording time in minutes (buffer time)

System requirements:

  • Windows 8 or higher
  • .NET Framework 4.5

Download What did I say Setup.exe.zip (1 MB)

License: MIT, closed source at the moment.

Known issues:

  • when saving to a file and then canceling the save dialog, the recorded audio is lost

Missing features:

  • Hotkey support
  • Support for external triggers (e.g. alarm contact)
  • Integrated playback

Please post bug reports and feature requests to whatdidisay.yyyy-mm-dd@lockerflockig.de where yyyy-mm-dd is the date you send the email (that’s my spam filter).