Here is a small selection of sounds we hear in the Amazon Neighborhood (and a few we don't). Note that hearing damage occurs at around 85 decibels (dB) and humans experience pain at around 120 dB.

Also, the decibel scale is logarithmic. If normal conversation produces about 60 dB, then sounds at 70 dB are twice as loud, those at 80 dB are four times as loud, those at 90 dB are eight times as loud, those at 100 dB are 16 times as loud, and so forth.

Conversely, sounds at 50 dB are half as loud, those at 40 dB are one-quarter as loud, those at 30 dB are one-eighth as loud, and so forth.