Signal-to-Noise Ratio and Why It Matters https://www.lifewire.com/signal-to-no... “You might have come across a listed product specification, or maybe even heard or read a discussion about signal-to-noise ratio. Often abbreviated as SNR or S/N, this specification can seem cryptic to the average consumer. While the math behind signal-to-noise ratio is technical, the concept is not, and this value can impact a system's overall sound quality.”
What is Sound? http://www.explainthatstuff.com/sound... “Sound fills our days with excitement and meaning, when people talk to us, when we listen to music, or when we hear interesting programs on the radio and TV. Sound may be the last thing you hear at night as well when you listen to your heartbeat and drift gradually into the soundless world of sleep. Sound is fascinating—let's take a closer look at how it works!”
The World Now Sounds Different to How it Did a Century Ago http://www.bbc.com/earth/story/201611... “In 2015, a US team of scientists and engineers reported that the loudest sound in some waters now comes from millions of tiny bubbles, which are released by melting glaciers and icebergs. In the fjords of Alaska and Antarctica, the average noise level is now over 100 decibels – louder than any ocean environment recorded before.”
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