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A noise level of 65 decibels is equivalent to the sound of a normal conversation or background music in a restaurant. It is also the recommended noise level for a comfortable working environment.
A 600-watt wind turbine typically generates around 45-65 decibels of noise, which is comparable to ambient noise in a quiet residential area. This noise level is considered low and is not usually disruptive to people in the vicinity.
Help: Decibel Table - Comparison Chart - Table of Sound Levels and corresponding Sound Pressure and Sound Intensity - Units and Quantities: Scroll down to related links and look at "Table of Sound Levels - Sound Pressure and Sound Intensity ".
The frequency of a vacuum cleaner is typically around 65-75 decibels. The loudness will vary depending on the model and brand of the vacuum cleaner.
You can convert the loudness in sones to the loudness level in phons. To convert the sound pressure level in dB or dBA to loudness in sones is not possible. Scroll down to related links and read "Correlation between sones und phons".
65 degrees Celsius is higher than 65 degrees Fahrenheit.