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相位失配误差是声强测量系统的主要误差源，仅靠提高仪器的精度很难消除这一误差。文章提出了一种简单易行的修正声强测量系统相位失配误差方法。理论分析和实验验证表明该方法操作简单，修正准确可靠。
Phase mismatch error is the main source of sound intensity measurement system, only by improving the accuracy of the instrument is difficult to eliminate this error. This paper presents a simple and easy method to correct phase mismatch error of sound intensity measurement system. Theoretical analysis and experimental verification show that the method is simple, accurate and reliable.