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  2. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    The condenser microphone, invented at Western Electric in 1916 by E. C. Wente, [22] is also called a capacitor microphone or electrostatic microphone—capacitors were historically called condensers. The diaphragm acts as one plate of a capacitor, and audio vibrations produce changes in the distance between the plates.

  3. Francis Blake (inventor) - Wikipedia

    en.wikipedia.org/wiki/Francis_Blake_(inventor)

    Francis Blake was born in Needham, Massachusetts on December 25, 1850, the son of Caroline Burling (Trumbull) and Francis Blake, Sr. [1]. In 1879, he invented a carbon microphone for use in the telephone, and patented [2] [3] [4] it shortly after Thomas Edison invented a similar microphone that also used carbon contacts.

  4. Raymond A. Litke - Wikipedia

    en.wikipedia.org/wiki/Raymond_A._Litke

    Raymond A. Litke (1920-1986) was an American electronic engineer, the inventor of a practical wireless microphone, and the first to patent the wireless microphone.He was born and raised on a farm near Alma, Kansas, but spent most of his adult life in San Jose, California.

  5. History of sound recording - Wikipedia

    en.wikipedia.org/wiki/History_of_sound_recording

    Ring-and-spring microphones, such as this Western Electric microphone, were common during the electrical age of sound recording c. 1925–45.. The second wave of sound recording history was ushered in by the introduction of Western Electric's integrated system of electrical microphones, electronic signal amplifiers and electromechanical recorders, which was adopted by major US record labels in ...

  6. David Edward Hughes - Wikipedia

    en.wikipedia.org/wiki/David_Edward_Hughes

    David Edward Hughes (16 May 1830 – 22 January 1900), was a British-American inventor, practical experimenter, and professor of music known for his work on the printing telegraph and the microphone. [3]

  7. The role and history of the White House press secretary

    www.aol.com/news/2017-01-25-the-role-and-history...

    On the White House historical association's website, Mccurry says he viewed the press secretary job's this way "I believe the press secretaryneeds to work for both the press and the president" by ...

  8. Sound recording and reproduction - Wikipedia

    en.wikipedia.org/wiki/Sound_recording_and...

    Between the invention of the phonograph in 1877 and the first commercial digital recordings in the early 1970s, arguably the most important milestone in the history of sound recording was the introduction of what was then called electrical recording, in which a microphone was used to convert the sound into an electrical signal that was ...

  9. What is Behind Macquarie Infrastructure Corporation’s (NYSE ...

    www.aol.com/news/behind-macquarie-infrastructure...

    With an ROE of 13.61%, Macquarie Infrastructure Corporation (NYSE:MIC) outpaced its own industry which delivered a less exciting 11.97% over the past year. Superficially, this looks great since we ...