用声强法测柴油机声功率的研究

介绍一种双传声器声强测量系统，以及这一系统在实际工作中的运用。实验结果表明：在恶劣的声学条件下，用声压法无法对柴油机的声功率进行测试，测试结果严重失真，用声强法则能精确地进行测定，而不受测试场地声学条件所限。

Researches into Sound Intensity Measurement Used to Measure Diesel Sound Power

A sound intensity measurement system with a bimicrophone is recmmended and applied to the concrete work. The result of the experiments has indicated that under the adverse ciroumstances of acoustics, by means of sound pressure measurement we failed to put diesel sound power to the test, whose result is seriously distorted. Instead, we are able to determine it accurately by means of sound intensity measurement because there is no restriction on the circumstances of acoustics on the testing spot.