Hello again Dave, I am sorry I was incorrect, ICST tool do not have a soundfield rotation object while Graham Wakefield AMbisonics external do.
So I am not sure the two are compatible. Do you have any tips? Thank you Regards, Sero On Wed, Jun 6, 2012 at 3:57 PM, SERO SERO <bassi...@gmail.com> wrote: > Hello All, > > thank you very much for your responses, very much appreciated. > > Dave - Thank you for the links and the ideas regarding the application of > delay effect to the B-foramt signal; one thing is not clear to me yet is > the following and I would be very grateful if you can expand further for me: > > I have a mono source that is encoded in B-format and already include the > rotational information in the encoder (current ICST encoder is an encoder > from mono to B-format + panner) so if I apply delay to the B-format signal > I am assuming I will already have the system responding to source rotation > when I rotate my source without further panning the fx soundfield. > Am I correct or I do need to rotate the delay fx soundfield as well > according to the source rotation? > > Both solution are possible as I will use a typical send/return fx path > (%wet) for the fx. > > Gus - Thank you for the link, Cannot check now in the office but will have > a look one evening. > I am definitely up for sharing ideas and patches. Please feel free to > write on my sursound email for any personal communication. > > Very grateful for all the help from the list. > > Thankyou > > Sero > > >> >> Message: 3 >> Date: Sun, 3 Jun 2012 21:33:58 +0100 >> From: Dave Malham <dave.mal...@york.ac.uk> >> Subject: Re: [Sursound] B- Format to A-format conversion for an >> ambisonics fx >> To: Surround Sound discussion group <sursound@music.vt.edu> >> Message-ID: >> < >> capw+1zrn0w_5hdrbxpss60oy_z7_pgrwjlez_ogyjmpmzxp...@mail.gmail.com> >> Content-Type: text/plain; charset=UTF-8 >> >> Hi Sero, >> Although there are times that processing A format may be be useful >> in compositional terms (see Jo Anderson's work) it isn't necessary to >> change to A format for applying general effects like delay, eq or >> gain, even if it involves phase shifts - so long as there are no >> differences between channels in the B Format. So, if all channels have >> the same delay, no matter what it is. It is entirely possible to >> provide a B format feedback path via delays which incorporate >> rotations to increase the complexity of the final soundfield. Dylan >> Menzies incorporated this in his LAmb software >> (http://www.tech.dmu.ac.uk/~dylan/z/dylan/project/holog/index.html). >> The same applies to pretty well any effect - if you apply a boost of, >> say, +2.65dB at 5kHz to the W channel, you must apply an identical >> boost of+2.65dB at 5kHz to all the other channels. >> >> Dave >> >> On 3 June 2012 19:53, SERO SERO <bassi...@gmail.com> wrote: >> > Hello list, >> > >> > This is my first post here so please be patient if I am doing something >> > wrong with the replies. >> > >> > I am working on a patch in MAX 6 for Ambisonics reproduction for a jazz >> > band and I am looking in creating a series of FX that can be encoded in >> 3rd >> > order. >> > >> > My main understanding is that for a delay FX type (and any other fx that >> > affects the phase of the signal) I need to convert the B-format signal >> to >> > A-format, then apply the fx I want and then reconvert to B-format. >> > >> > Does anyone can point me to any resource I can use to understand both >> > conversions? >> > Also can you share a patch u have done in Max (if anyone use it) I can >> use >> > as a reference? >> > >> > I use the ICST tools in Max 6 for all the ambisonics processing. >> > >> > I am already using the trick of applying delay FX to a mono source >> before >> > enconding and then use rotation of the sound field to create ping pong >> like >> > fx but I would like to do something more creative. >> > >> > Thank you very much >> > >> > Regards, >> > Sero >> > -------------- next part -------------- >> > An HTML attachment was scrubbed... >> > URL: < >> https://mail.music.vt.edu/mailman/private/sursound/attachments/20120603/5b53fa16/attachment.html >> > >> > _______________________________________________ >> > Sursound mailing list >> > Sursound@music.vt.edu >> > https://mail.music.vt.edu/mailman/listinfo/sursound >> >> >> >> -- >> >> These are my own views and may or may not be shared by my employer >> >> Dave Malham >> Music Research Centre >> Department of Music >> The University of York >> Heslington >> York YO10 5DD >> UK >> Phone 01904 322448 >> Fax? ?? 01904 322450 >> 'Ambisonics - Component Imaging for Audio' >> >> >> ------------------------------ >> >> Message: 4 >> Date: Sun, 3 Jun 2012 21:55:37 +0100 >> From: Augustine Leudar <augustineleu...@gmail.com> >> Subject: Re: [Sursound] B- Format to A-format conversion for an >> ambisonics fx >> To: Surround Sound discussion group <sursound@music.vt.edu> >> Message-ID: >> < >> cabx2jupne7q3zozrbybfe4vio+_k6i_-9ymdyxm5w4b1ndk...@mail.gmail.com> >> Content-Type: text/plain; charset=ISO-8859-1 >> >> Hi Sero, >> I use ICST quite a lot as well - I do as you say and just apply the >> effects to the signals before sending them into ambipanning~ >> I'm not sure why converting to from B - format A - format will >> necessarily allow you more creative possibilities - I'm not really >> sure why you would do that, A - format as I understand it is just the >> raw recordings that come out of a microphone ? >> You can see a patch Ive made here for spatialising audio in 3d with a >> wii controller (an electroacoustic granular magic wand): >> >> http://www.youtube.com/watch?v=7cmodvSM5jE >> >> Id be happy to share knowledge patches etc , >> cheers, >> Gus >> >> >> >> >> -------------- next part -------------- An HTML attachment was scrubbed... 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