Red plastic cup $0.30

This little case $$$$$$???? ( a lot more than $0.30) ]]>

On music, you’re right, 3 dB is the smallest perceivable sound volume increase is 3 dB. You mention a 9X increase in volume. If you mean a 9:1 increase in the sound power level, that’s 10 dB, which is well above the smallest perceivable sound volume increase.

I have the impression that Falco Freeman is misquoting numbers someone else mentioned, with no understanding of what he’s saying.

]]>The smallest perceivable sound volume increase is about 3 dB, so a 9 dB is just 3 notches up. You’re definitely not going to perceive a 9x increase in volume.

Not sure how he came up with 20% from that. ]]>