Cheapdiesel
Marksman
- Mar 3, 2009
- 254
- 18
Lets not get the shorts in a bind. Reference was to acoustic power,(which I percieve as the most damaging in this discussion), nothing more. As you point out, the formula for acoustic power ratios is the same as electrical power. I didn't intend to reference Loudness--another function altogether. merely pointing out the importance of the NRR. Thanks for the peer review! You also a AES member?fixed.
Electrical/Audio Engineer here...
3dB is a doubling/halving of power. dB=10log(P1/P2)
6dB is a doubling/halving of voltage. dB=20log(V1/V2)
10dB is an apparent doubling/halving of apparent loudness; this is a psychoacoustically tested and scientifically accepted number.
So, it takes twice as much amplifier power to increase the sound output by 3dB, but...
The human ear hears a 10dB increase (decrease) as twice (half) as loud.
Loudness: Definition from Answers.com