Hondas Getting Louder
We have two Honda EU2000 generators. Normally we run them alternately unless the AC is needed. So each one has about 400 hours. DW says they are louder than when new — confirmed by a db meter check...
Forum Discussion
Francesca, do you know what spreading loss is?
Do you know how to calculate it?
Do you even know what it is?
Do you understand there are weighting scales?
As for your claim that the level is away from the exhaust (claiming the exhaust would be louder) some U of Alabama students did a study a few years back that your claim is, well, "it depends". They did several "beam pattern" runs and found enough variability in their results I would say "not proven" (yes I've actually read their report, have you?)
60 dB at 1 meter is the same measured energy as 60 dB at 7 meters. Yes if you are 1 meter away it would be louder then 60 dB
ktmrfs is correct, I've never checked my cell-phone "sound" ap, but I'm betting it's only good to maybe +/- 6 dB for accuracy and probably +/- 3dB for repeatability.
This is why I always reported sound as db/meter.
Do you know how to calculate it?
Do you even know what it is?
Do you understand there are weighting scales?
As for your claim that the level is away from the exhaust (claiming the exhaust would be louder) some U of Alabama students did a study a few years back that your claim is, well, "it depends". They did several "beam pattern" runs and found enough variability in their results I would say "not proven" (yes I've actually read their report, have you?)
60 dB at 1 meter is the same measured energy as 60 dB at 7 meters. Yes if you are 1 meter away it would be louder then 60 dB
ktmrfs is correct, I've never checked my cell-phone "sound" ap, but I'm betting it's only good to maybe +/- 6 dB for accuracy and probably +/- 3dB for repeatability.
This is why I always reported sound as db/meter.
