Re: Electric vehicle battery fires, what to know and how to react

Jeff Layman <Jeff@invalid.invalid> wrote:

On 26/08/2024 11:10, Liz Tuddenham wrote:

Jeff Layman <Jeff@invalid.invalid> wrote:
 
[...]

  From the information these wind turbine sellers provide it looks looks
really good - only 35 dB!

 
Relative to what?

 
According to the caption in the second link "...35â€"45 decibels when
adjusted to correspond to the hearing threshold of the human ear (also
known as A-weighted decibels or dBA)."

If they hadn't specified that, they could have got away with almost any
noise level.  In some cases, dB(C) is more useful if the noise contains
a lot of low frequencies.  For non-electronic music, the dB(C) reading
is generally about 10dB higher than the dB(A) reading.


--
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk