ANSI/IEEE 661-1979 电话连接线客观声级额定值的测定标准方法

标准号：ANSI/IEEE 661-1979
中文标准名称：电话连接线客观声级额定值的测定标准方法
英文标准名称：Standard Method for Determining Objective Loudness Ratings of Telephone Connections
标准类型：M11
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：M11
国际标准分类号：17.140.01;33.040.01
适用范围：Determines the loudness rating of partial and complete telephone connections. For complete telephone connections, comprising overall and sidetone transmission paths, the procedures involve measurement of acoustic input and output pressures. For partial telephone connections comprising transmitting, receiving, or connection paths, the procedures involve measurement of acoustics pressures and electric voltages.