Thank you everyone who contributed to answering my question. I am now fully convinced that using the DEMAND library would be next to useless and not worth the work involved in trying to make it (partially) usable. Pity really, as a database of everyday noise would be a useful resource – but only if it's done properly in the first place.
I am in the process of doing my own field recordings using a Brahma mic (been impressed with results so far: birdsong; a very noisy, reverberant restaurant; organ playing in a church) but as it will take some time to build up a complete library I was looking for some other material I could use, particularly every day environments. Thanks, Richard, for your suggestion of ambisonia.com. I started there but was having trouble downloading the torrent files. (The internet access I have here (in a shared building) blocks torrent files so I need to download somewhere else then transfer.) Will continue to pursue this route. Thanks again, everyone. On 14 May 2015, at 19:11, Richard Lee <rica...@justnet.com.au> wrote: > Duu.uuh!! http://parole.loria.fr/DEMAND/DEMAND.pdf states > > "the microphones of the array ... are not calibrated with respect to each > other, and so gain variations are to be expected: we found that the energy > in some channels is consistently higher than in other channels. Algorithms > working on this data should compensate for this variation" > > ie they haven't a clue what each capsule is doing. > > This precludes any attempt at conversion to B-format and also of > beamforming. > > I was hoping this might lead to a discussion about EigenMike and how it > might be made good enough to record music but this is certainly NOT the > vehicle. > > I can't help feeling they should beg borrow or steal a TetraMic and repeat > their recordings. > > Presently, about all you can say is they have a close bunch of unspecified > mikes in some sort of horizontal pattern. > > Curtiss, if you are after some 'realistic' atmospheric background (and this > is something TetraMic and properly aligned Soundfields do better than an > ything else), try ambisonia.com and recordings by John Leonard > (soundmanjohn), Paul Doombusch, JH Roy & others. > > John Leonard's specialty is WW2 aircraft flyovers but he includes a lot of > airfield noise too :) He's also got some very realistic street scenes, > audience noise, applause etc too. > > Aaron, you are right about SVD not being much use here as we have multiple > solutions but I was hoping to dream up something to help S/N at LF. > > _______________________________________________ > 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.
