Signalis microphone puzzle

1. Where is the interrogation room in Signalis?
2. How do I save Signalis?

Where is the interrogation room in Signalis?

Go into the room on the right « Registry » and go up to reach the North-West Corridor. Explore the « Interrogation » room on the left to find a note on frequencies.

How do I save Signalis?

To save your game in Signalis, you must find and interact with the Red Terminals. You will usually find them at all stages of the game except for the first one. The image above shows how the terminal should look, and when you find one, interact with it, and the menu to save your game will appear.