Dear all,
We are working on 3D audio rendering for signals with low sampling frequency.
As you may know, the HRTFs are normally measured at the high sampling frequency, e.g., 48kHz or 44.1kHz. However, the sampling frequency of sound signals in our application is restricted to 16 kHz. Therefore, to render this low-frequency (≤8kHz) signal, one straight way is to first downsample the HRTFs from 48kHz/44.1kHz to 16kHz and then convolve with sound signals. However, the sound localization performance of the signal rendered with this approach is greatly decreased, especially elevation perception. To improve the sound localization performance, I am now wondering whether there is a certain good method to solve or mitigate this problem in this scenario.
Any discussion is welcome.
Thanks a lot again.
Best regards,
Junfeng