Subject: Re: [AUDITORY] On 3D audio rendering for signals with the low sampling frequency From: Prof Leslie Smith <l.s.smith@xxxxxxxx> Date: Thu, 11 Aug 2022 09:04:10 +0100I'd also wonder about the time resolution: 16KHz =3D 1/16000 sec between samples =3D 62 microseconds =2E That's relatively long for ITD (TDOA) estimation, which would suggest tha= t localisation of lower frequency signals would be impeded. (I don't have evidence for this: it's just a suggestion). --Leslie Smith Junfeng Li wrote: > 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 rende= r > this low-frequency (=E2=89=A48kHz) 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 thi= s > scenario. > > Any discussion is welcome. > > Thanks a lot again. > > Best regards, > Junfeng > --=20 Prof Leslie Smith (Emeritus) Computing Science & Mathematics, University of Stirling, Stirling FK9 4LA Scotland, UK Tel +44 1786 467435 Web: http://www.cs.stir.ac.uk/~lss Blog: http://lestheprof.com