5 ms·
It’s not accurate to convert .1 psf to dB because it’s an impulsive shape, not a continuous tone. And human loudness perception depends on how smooth (low frequ
by asdfadsfgfdda 3mo ago
It’s not accurate to convert .1 psf to dB because it’s an impulsive shape, not a continuous tone. And human loudness perception depends on how smooth (low frequency) the shape is
- foobarqux 3mo ago> It’s not accurate to convert .1 psf to dB because it’s an impulsive shape, not a continuous tone. And human loudness perception depends on how smooth (low frequency) the shape is Sorry can you explain more? It's just the definition of dB (?) And it's less impulsive than you imagine, go to youtube to listen to the sonic boom + continuous roar. The FAA has no criteria about the "texture" of the sound and there is no reason to believe the allowed planes will differ substantially in this respect compared to every other supersonic aircraft in the past.
- asdfadsfgfdda 3mo agoOn a typical day, the atmospheric pressure varies by maybe 150 Pa, or 3 psf. By definition, that’s 137 dB. But it’s imperceptible because the rate of change is so low.
- foobarqux 3mo agoObviously it is assumed we are talking about frequencies in the range of the audio spectrum (which a sonic boom is). Your point has nothing to do with the dB scale.
- atoav 3mo agoYeah nah. For all relevant level metering you use a A-weighting curve (weighting the frequencies by human ear sensitivity) so that is not how any of that works.
- LoganDark 3mo agoA sonic boom doesn't exactly average out over the length of the day, though, does it?