sum tone

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Vietnam War. U.S. President Lyndon B. Johnson awards the Distinguished Service Cross to First Lieutenant Marty A. Hammer, during a visit to military personnel, Cam Ranh Bay, South Vietnam, October 26, 1966. President Johnson

Vietnam War Timeline

Orange basketball on black background and with low key lighting. Homepage 2010, arts and entertainment, history and society

The 10 Greatest Basketball Players of All Time

Watergate scandal. Richard M. Nixon. President Nixon gives a press conference and talks to the press, March 12, 1971.

9 American Political Scandals

green digital binary symbols

What Comes After Terabyte?

Statue of Nostradamus

Nostradamus and His Prophecies

Mona Lisa, oil on wood panel by Leonardo da Vinci, c. 1503-06; in the Louvre, Paris, France. 77 x 53 cm.

Why Is the Mona Lisa So Famous?

Adolf Hitler (Nazi, nazism, German leader).

9 Things You Might Not Know About Adolf Hitler

sum tone

sound

Learn about this topic in these articles:

sound perception

In sound: The ear as spectrum analyzer
…of new pure tones: the sum tones,and the difference tones,
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