Q: When I try to lunch the measure impulse response tool an error message appears: "In Prepare error - closing convolver!".

A: The measuring system in ODEON requires that both an input and output audio device are available. Some sound cards make their devices unavailable to Windows (Vista, 7, 8) if no cable is connected. Connecting the microphone to the microphone input on the sound card (or any 3.5 millimeter jack) solves the problem. You can then go into the Measurement setup (Options>Program Setup>Measurement Setup) and choose the correct microphone (and playback device too) from the audio devices tab.