IEC 61606-1:20 09（E）适用于所有消费者使用、专业使用和个人计算机的音频和视听设备的数字音频部分的音频特性的基本测量方法。本标准中描述的常用测量条件和方法用于测量音频带宽等于系统采样频率的大约一半的设备的性能特征，其中音频信息以数字数据的形式进行处理。CD播放器、DAT记录器、数字放大器、数字声音广播接收器和具有数字声音的电视广播接收器是示例。它描述了具有数字输入和模拟输出以及模拟输入和数字输出的设备的测试方法。本标准的未来修订将涵盖数字输入/数字输出和模拟输入/模拟输出测试。它构成技术修订。与第一版相比的重大技术变化如下: -改变了预处理的周期； -在测量仪器中添加加权过滤器； -更正错误的参考编号； -改进了一些不恰当的描述。

IEC 61606-1:2009(E) is applicable to the basic methods of measurement of the audio characteristics of the digital audio part of audio and audiovisual equipment for all of consumer use, professional use and personal computer. The common measuring conditions and methods, described in this standard, are used for the measurement of the performance characteristics of equipment having an audio bandwidth equal to approximately one-half of the sampling frequency of a system, where the audio information is processed in the form of digital data. CD players, DAT recorders, digital amplifiers, digital sound broadcast receivers and television broadcast receivers with digital sound are examples. It describes test methods for equipment which has digital input with analogue output and analogue input with digital output. Future revisions of this standard will cover digital-in/digital-out and analogue-in/analogue-out tests. It constitutes a technical revision. The significant technical changes with respect to the first edition are the following:
- changed the period of preconditioning;
- add A weighting filter in measuring instruments;
- correct the wrong reference number;
- some inappropriate descriptions have been improved.