How quiet is the Roborock Q5 Pro compared to the S7 series?

At 55 dB in standard mode, the Q5 Pro is noticeably quieter than the [Roborock S](https://www.amazon.com/s?k=Roborock+S&tag=wehavethat-20)7 series and most of the competition. You can run it during homework or sleep without anyone complaining — a rare claim for a capable robot vacuum.