Nyquist-Shannon; The Backbone of Digital Sound

Most people don't understand how a digital recording is an exact reproduction of the analog waveform with no distortion.  Nyquist-Shannon says if you sample an audio signal digitally at twice the maximum bandwidth, as defined by the low-pass filter, mathematically the only signal that come out the other end, after going through another low-pass filter is the exact sine wave that went into the recorder. So, the digital sampling, actually can reproduce the exact analog sine wave -- all thanks to math. A Russian scientist invented Nyquist-Shannon in 1933 but it was rediscovered by Nyquist and Shannon in America circa 1964.

Little Falls Hydro Plant

Between the Erie Canal and Mohawk River, on the road to Moss Island sits a small hydroelectric plant. Currently that road is closed while they are rebuilding the canal wall.

Taken on Saturday September 21, 2019 at Moss Island.

Clearing Out

It's 10 AM and it's clearing out quite nicely as I continue up Alander Mountain.

Taken on Sunday September 13, 2009 at Alander Mountain.

NPR

In Tariff Scams, Some Products Made In China Are Mislabeled To Avoid Levies : NPR

"It's no secret. It's definitely an open cottage industry in China, big time," said a spokesman for U.S. Customs and Border Protection, who spoke on condition of anonymity to discuss tariff enforcement policy. "It's not uncommon to hear stories of Chinese brokers charging a nominal extra fee to somebody to essentially say, 'Don't worry about it. I'll make sure it doesn't say 'China' on it.' "