Errors & Warnings

Impulse was designed to be robust when dealing with things that go wrong / don’t go as the user expected during operation, this is an index of errors and warnings that can be encountered, where they are encountered, and why.

Simulation Errors & Warnings

• No Volume: This warning can happen when simulating acoustic data. While valid paths might have been created, something happened with the volume estimation algorithm and an accurate volume estimation could not be provided. The user can still render IRs in this case, but enabling late reflections and using the Sabine late reflections method will produce RT60s with no length.

Render Errors & Warnings

In the case of render errors, when an error occurs an audio output will still show up in the output view, but it will be highlighted red, and clicking it will give information as to why the audio file failed to be produced.

• No Responses: This render error shows that when a rendering occurred, there were no rays in the simulation that intersected with the listener point. This is likely because the listener point was placed outside of the 3D scene.
• Too Quiet: This render error happens when an IR manages to render, but the energies in the response are too quiet to be anything that is considered useful. This happens when the IR is measured to be under -80dB. This is likely because the listener object is too far away from the source object.
• Too Loud: This render error happens when an IR manages to render, but the energies in the response are too loud to be useful. This happens when the IR is measured to be over +100dB.
• Duplicate: This error happens when a perfectly fine IR rendered, but it was found that there is one in the output view that is already identical to it.