Superior Image and Audio

Photography is the science, art and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.[1]

Videography refers to the process of capturing moving images on electronic media (e.g., videotape, direct to disk recording, or solid state storage) and even streaming media. The term includes methods of video production and post-production.

Wikipedia references:

 

  1.  Spencer, D A (1973). The Focal Dictionary of Photographic Technologies. Focal Press. p. 454. ISBN 978-0133227192.
  2. Jump up ^ Hodgson, Jay (2010). Understanding Records, p.1. ISBN 978-1-4411-5607-5.

An Audio signal is a representation of sound, typically as an electrical voltage. Audio signals have frequencies in the audio frequency range of roughly 20 to 20,000 Hz (the limits of human hearing). Audio signals may be synthesized directly, or may originate at a transducer such as a microphone, musical instrument pickup, phonograph cartridge, or tape head. Loudspeakers or headphones convert an electrical audio signal into sound. Digital representations of audio signals exist in a variety of formats.[2]

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