Measurement and calculation of soundpressurelevel and sound power level.
声压级及声功率级的测量和计算。
2
With the measurement of average soundpressurelevel and sound power level, the noise reduction result of the oil pan made by sandwich steel plate was proved.
通过平均声压级和声功率级的测试验证了复合钢板试制的油底壳的降噪效果。
3
Soundpressurelevel (SPL) soundpressurelevel is a measurement of the pressure fluctuations of a sound wave as it propagates through the air.