This paper presents the time-domain wideband spherical microphone array impulse response generator (TDW-SMIR generator), which is a time-domain wideband image source method (ISM) for generating the room impulse responses captured by an open spherical microphone array. To incorporate loudspeaker directivity, the TDW-SMIR generator considers a source that emits a sequence of spherical wave fronts whose amplitudes are related to the loudspeaker directional impulse responses measured in the far-field. The TDW-SMIR generator uses geometric models to derive the time-domain signals recorded by the spherical microphone array. Comparisons are made with frequency-domain single band ISMs. Simulation results prove the results of the TDW-SMIR generator are similar to those of frequency-domain single band ISMs.

翻译：本文提出了一种时域宽带球型麦克风阵列脉冲响应生成器（TDW-SMIR生成器），这是一种用于生成开放式球型麦克风阵列所捕获房间脉冲响应的时域宽带镜像声源方法（ISM）。为融入扬声器指向性，TDW-SMIR生成器考虑了声源发射的一系列球面波前，其幅度与远场测量的扬声器指向性脉冲响应相关。该生成器利用几何模型推导球型麦克风阵列记录的时域信号。通过与频域单频带ISM的对比验证，仿真结果表明，TDW-SMIR生成器的结果与频域单频带ISM具有高度一致性。