I want to know the answer to the following question:
When should the noise-based speed be used?
All the background I'm provided with is that "If the noise-based speed (40:1) is higher than the saturation-based speed, the noise-based speed should be reported, rounded downwards to a standard value (e.g. 200, 250, 320, or 400).". Is that enough to answer the question?
Answer: yes