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Design and Application of a Multirate Octave-Band Filter Bank on A-weighting Analysis of Vehicle Noises

机译:汽车噪声A加权分析的多速率倍频程滤波器组的设计与应用

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The accurate extraction of the octave-band spectrum is a key point for the sound pressure level (SPL) analysis of vehicle noises. A multirate octave-band filter bank (OBFB) based on a set of low-pass and band-pass Butterworth filters is discussed in this chapter. By using the functions in the MATLAB toolbox, the OBFB was performed for the calculation of the A-weighted SPL of a vehicle noise. The comparison with the measured result suggests that, due to its powerful an tialiasing characteristics, the newly designed OBFB is accurate and feasible for the A-weighting analysis of vehicle noises, which may be used as a reference for sound quality evaluation in other sound-related fields.
机译:八度频带频谱的准确提取是车辆噪声的声压级(SPL)分析的关键。本章讨论了基于一组低通和带通巴特沃斯滤波器的多速率八度带滤波器组(OBFB)。通过使用MATLAB工具箱中的功能,执行OBFB来计算车辆噪声的A加权SPL。与实测结果的比较表明,由于其强大的复律特性,新设计的OBFB对于车辆噪声的A加权分析是准确可行的,可以用作其他声音的音质评估参考。相关领域。

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