BAS Message
October 2023

1.  Chronic Noise

There is growing evidence that continuous background, noise, even at low levels can have adverse health effects. Unpleasant noise enters your body through your ears, but it is relayed to the stress detection center in your brain.  This area, called the amygdala, triggers a cascade of reactions in your body. If the amygdala is chronically overactivated by noise, the reactions begin to produce harmful effects.  The endocrine system can overreact, causing too much cortisol, adrenaline and other chemicals to course through the body.  The sympathetic nervous system can also become hyperactivated, quickening the heart rate, raising blood pressure, and triggering the production of inflammatory cells.  Over time, these changes can lead to inflammation, hypertension and plaque buildup in arteries, increasing the risk of heart disease, heart attacks and stroke. According to the World Health Organization, average road traffic noise above 53 dB or average aircraft noise exposure above about 45 dB are associated with adverse health effects. In a subsequent Swiss study, higher degrees of nighttime "noise intermittency" -- or the extent to which sound events were distinguishable from the background levels -- were associated with heart disease, heart attacks, heart failure and strokes. NYT 20 June 2023

2. There is some upheaval in the ATSC 3.0 television market. Patent disputes have resulted in LG's tv's not containing ATSC 3.0 tuners. The DRM issues have prevented ATSC 3.0 tuner 
manufacturers from completing their products. Stay tuned...

3. From John Marks:  Sunday November 5, 2 PM at the First Baptist Church in America, Providence Rhode Island USA
Arturo Delmoni & Stephen Martorella will play Beethoven's "Kreutzer" and "Spring" violin-piano sonatas, a "surprise" piece, and perhaps an encore or two.
Free and open to the public; a goodwill offering can be made afterwards.

The Boston Audio Society
PO BOX 260211
Boston MA 02126

problems? email Barry:

updated 4/14/23