由于对 Ambisonics 重放的自由场声压误差和双耳声压误差的分析会得到不同的 结果，而双耳声压的误差更接近实际的听觉感知． 为此，文中通过对双耳声压误差的分析， 评估了扬声器数目对三维空间 Ambisonics 重放误差的影响． 结果表明: 在 Shannon-Nyquist 空间采样理论给出的上限频率附近，扬声器数目从低限 L2 增加至( L +1) 2 或者( L +2) 2， 能够有效地减小重构误差; 继续增加扬声器数目或者在更高的频率，双耳声压误差随扬声 器数目的变化关系将变得复杂; 文中结果修正和推广了现有文献的结论． 

 As analysis on freefield pressure error and binaural pressure error in Ambisonics reproduction yields different results，and the results from binaural pressure error are closer to those of auditory perception． In this work，the influence of the number of loudspeakers on the pressure error in Ambisonics reproduction is evaluated by analyzing the binaural pressure error． The results indicate that，near the frequency limit given by Shannon-Nyquist spatial sample theorem，increasing the number of loudspeakers from low limit L2 to (L + 1)2 or (L + 2)2 reduces the error in reproduction effectively． Increasing the number of loudspeakers to more than (L +2)2 or increasing frequency to higher range，however，makes the relationship between the binaural pressure error and the number of loudspeaker complicated． The results of this work revise the conclusion of some previous work．