The Measurement of Pressure-residual Intensity Index and Its Application in Sound Intensity Measurement's Evaluation

Sound intensity measurement is an important measuring technique developed lately which has a wide application in sound power measurement and recognition of sound sources.But in practice,there is always error due to phase mismatch for intensity measurements.In this treatise,the author analyzed the cause of residual intensity and the effect on the measure accuracy.Finally,the author used the pressure-residual intensity index in the evaluation of an intensity measurement's accuracy.