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由中国计量科学研究院研制的多功能声校准器能在多达１１个不同的频率点上进行声校准，并采用声压缩技术，使声压级不受环境、腔体积变化的影响，保证了校准量值的准确可靠。正弦信号源部分采用先进的数字合成技术并由５１系列单片机控制和多位点阵式液晶显示，不仅大大提高了频率准确度和猝发音持续时间的准确度，实现了相位零起，而且操作简便。经测试，样机的各项技术指标达到了ＩＥＣ９４２中规定的技术要求，属国际先进水平。
The multi-function sound calibrator developed by China Institute of Metrology can perform sound calibration at up to 11 different frequency points and use acoustic compression technology to keep the sound pressure level unaffected by environmental and cavity volume changes, ensuring The calibration value is accurate and reliable. Sinusoidal signal source part of the advanced digital synthesis technology and the 51 series of single-chip control and multi-bit LCD, not only greatly improves the accuracy of the frequency accuracy and the duration of the burst tone, to achieve the phase zero, and easy to operate . After testing, the prototype of the technical indicators have reached the technical requirements of IEC942, is an international advanced level.