Digital audio player. (Cover story)

• Autores: Christie Nicholson
• Localización: Scientific American, ISSN 0036-8733, Vol. 301, Nº. 3, 2009, págs. 72-72
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The article discusses the invention of the digital audio player. Portable music was digitized in the 1980s and coincided with the increased use of compact discs (CD), mini discs, and digital audio tapes. Moving Picture Expert Group (MPEG) developed a format known as MP3 in the 1990s which condensed audio files while discarding imperceptible sounds. Topics include an overview of the the MP3 format, the 2001 iPod by Apple, and statistics related to average number of digital downloads in the U.S.