Hi Fons It wasn't the up sampling i was hoping would produce a better result, it was the down sampling of the hrtf i thought would be worse. At least then it is less truncated .. Of course i should of mentioned it was only a guess. As far as spectral recovery, i was thinking more along the lines of T-Design sampling the b-format (hopefully after a little upmixing to a HOA) and applying the recovery to the T-Format directions, before converting back to B-format, and then convolving.. Of course all another guess, and pointless if the OP is limited to a sampling frequency of 16khz throughout, and hasn't even mentioned what format the original is in. ;)
Cheers On Thu, 11 Aug 2022, 11:22 Fons Adriaensen, <[email protected]> wrote: > On Thu, Aug 11, 2022 at 10:29:12AM +0100, Steven Boardman wrote: > > > You may get a slightly better performance by up sampling the 8khz to > > 44.1/48 before convolution with the hrtf. > > If the upsampling is any good it will not produce any signal above > the original limit of 8 kHz. So this won't make any difference. > > > In the post production world we sometimes use 'spectral recovery' > > algorithms like in Izotope RX, to regain high frequency content lost from > > remote recording sessions, with the likes of 'zoom'. This may get you a > > little closer still. > > Unlikely. The 'recovered' HF content will not contain the original > elevation cues. The only way this could help is in case the bandlimited > signal appears elevated, adding some artificial HF may bring it back > to horizontal where it probably should be. But the original info is > lost anyway. > > One way to recognise a signal as coming from an elevated source > could be to analyse the distribution of early reflections. But > I doubt very much if this would be a practical solution. > > -- > FA > > _______________________________________________ > Sursound mailing list > [email protected] > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > edit account or options, view archives and so on. > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20220811/96530f75/attachment.htm> _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
