在低频率改正测量头相关的转移功能(HRTF ) 的一个方法被建议。由在低频率从球形的头模型分析 HRTF,在 400 Hz 的频率下面, HRTF 的大小是将近不变的,阶段为远、近的地两个都是频率的线性功能,这被证明。因此,如果在 400 Hz 上面的 HRTF 被实验精确地测量,它能由理论模型在低频率改正 HRTF。计算和主观实验的结果证明建议方法的可行性。
A method to correct the measured head-related transfer functions (HRTFs) at low frequency was proposed. By analyzing the HRTFs from the spherical head model at low frequency, it is proved that below the frequency of 400 Hz, magnitude of HRTF is nearly constant and the phase is a linear function of frequency both for the far and near field. Therefore, if the HRTFs above 400 Hz are accurately measured by experiment, it is able to correct the HRTFs at low frequency by the theoretical model. The results of calculation and subjective experiment show that the feasibility of the proposed method.