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Standard

IEEE 661-1979

Ritirato
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Astratto

New IEEE Standard - Inactive-Reserved. To describe a practical and reproducible method of determining the loudness ratings of telephone connections. Loudness ratings may be measured directly using appropriate test instruments and facilities, as specified in this standard, or may be computed using the amplitude-frequency characteristic of the connection measured in accordance with IEEE Std 269-1971. .

Specifiche dei prodotti

  • Standard da IEEE
  • Pubblicato:
  • Ritirato:
  • Tipo di documento: IS
  • Pagine
  • Publisher IEEE
  • Distributor IEEE
  • ICS 17.140.01
  • ICS 33.040.01
  • National Committee IEEE Communications Society / Standards Development Board

Relazioni con i prodotti

  • Riferito da: IEEE 820-2021
  • Riferito da: IEEE 269-2010
  • Riferito da: IEEE 820-2005
  • Riferito da: IEEE 820-1984
  • Riferimenti: CCITT (International Telegraph and Telephone Consultative Committee) Recommendation P 72, Measurement of Reference Equivalents and Relative Equivalents, CCITT Green Book, vol 5, International Telecommunication Union, 1973, 2 Rue de Varembe, 1211 Geneva 20, Switzerland.
  • Riferimenti: ANSI S3.2-1960 (R1971), American National Standard Method for Measurement of Monosyllabic Word Intelligibility.
  • Riferimenti: ANSI S3.5-1969 (R1973), American National Standard Methods for the Calculation of the Articulation Index.