Intermodulation Distortion Analysis Method Based on a Rectangular Window Convolution

In audio measuring system, high-precision intermodulation distortion analysis is an important method of measuring distortion. research in the accuracy of convolution window in the audio measurement system intermodulation distortion analysis, and compare convolution window with a variety of classical windows function. The results show that with the same width, compared to other windows function when sample synchronization error is lesser, the convolution window owns the minimum distortion degree and the highest precision,which is more suitable for audio measurement system with high-precision intermodulation distortion analysis.