Spectral analysis would be a good clue here — sounds like clipping of LF to me
jon > On 7 May 2018, at 17:30, Gerard Lardner <glard...@iol.ie> wrote: > > I'm very much an amateur here, so please forgive what might be a stupid > question! > > I recorded a concert on Saturday (John Rutter's /Gloria /and Karl Jenkins' > /The Peacemakers/) using an Ambisonic mic and some others. I'm encoding the > A-format to B-format using VVEncode in Reaper, and panning in the extra mics > using Wigware Ambipan. The result is then decoded to surround sound or to > stereo using VVDecode; all in the same Reaper set-up. I've used this approach > before, usually successfully. > > I find that, when the organ and brass are playing at full volume (I mean in > the orchestra, not just in playback), there is a 'buzzing' sound in the > playback. It sounds harsh, pitched at about 50 Hz. But if I listen to the > A-format files alone in Reaper or in VLC Media Player, there is no buzz. > Similarly, there is no buzz if I encode the A-format using the stand-alone > version of VVMic. The buzz is present both in the B-format from the Ambisonic > mic and, less strongly, in the panned B-format from the soloists mic. It > appears to be an artefact of my editing configuration; but it didn't happen > in a recording I made, using the same configuration, last month. The only > difference since then has been that my old hard disc, which had developed > some faults, was cloned onto a new SSD. > > Does this description suggest a specific problem/remedy to anyone? I know I > can produce a decent CD using the stand-alone VVMic route and panning in the > soloists into the stereo mix; but I'd like to get to the bottom of why my > Ambisonic configuration is doing this now. > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180507/fffd5727/attachment.html> > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit > account or options, view archives and so on. _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
