Yes I did post it and I will keep looking for it but so far I’m not finding it. Until proven wrong (likely) my memory is the sound reduction was 10 dB from about 80 to 70 on the same road, same speed, same meter, similar wind/weather conditions. That sees like not much? Remember the sound scale (and our perception of it) are logarithmic so a reduction of 10 dB is about 1/10th the sound intensity. (3 dB increase is a doubling, or decrease a halving)RD, could you give the link to your sound page? I think I read that you measured before and after and were asking others to post similar tests (but the page sure isn't bookmarked??). Thx
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