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Forum: Rotorheads

6th Mar 2015, 20:26

Replies: 170

Airbus H160 helicopter

Views: 135,854

Posted By SansAnhedral

:ugh: 3dB SPL =/= 50% subjective volume ...

:ugh:

3dB SPL =/= 50% subjective volume

10db SPL = 50% subjective volume

To achieve the subjective "50% volume change", it's universally agreed in industry that the average noise (not...

Forum: Rotorheads

6th Mar 2015, 17:49

Replies: 170

Airbus H160 helicopter

Views: 135,854

Posted By SansAnhedral

Correct, and doubling of dB(SPL) does not equate...

Correct, and doubling of dB(SPL) does not equate to a doubling of psychoacoustic volume.

If you have a decently high end audio receiver at home, let me know if going from -25dB to -22dB on the...

Forum: Rotorheads

5th Mar 2015, 16:27

Replies: 170

Airbus H160 helicopter

Views: 135,854

Posted By SansAnhedral

Learn what a decibel is. 3dB does not equate...

Learn what a decibel is.

3dB does not equate to a subjective "halving" of noise.

3 dB increase is, by definition, a doubling of power in watts

In any case, the difference is noticeable,...

Forum: Rotorheads

4th Mar 2015, 14:21

Replies: 170

Airbus H160 helicopter

Views: 135,854

Posted By SansAnhedral

Question - is 3dB really worth what those blades...

Question - is 3dB really worth what those blades are going to cost on ship?

I can't imagine the potential fatigue issues they might end up facing in long term operation.

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