>> > Hmmm. The column heading says 'conversion to B-format/FMH', >> > and the values are prefixed by an 'x'. This suggests that >> > to get FMH you have to multiply the N3D component by the >> > value listed. >> >> thanks for picking that up... I think it is more likely, in the >> future, that B-format will be converted to N3D so I've change the >> title to "Conversion 'from'" and I'll clearly indicate the names of >> the FMH component channels. > > Hmmmm (again :-). With g = 1/sqrt(3) you now have an extra gain > factor of 1/3 ... > > What I'd expect is: > > W0 = W * sqrt(2) > X1 = X * sqrt(3) > Y1 = Y * sqrt(3) > Z1 = Z * sqrt(3) > X20 = U * sqrt(15/4) > etc.
> You can include an extra gain factor to ensure all signals remain > in the +/- 1 range, but that would depend on the order (it would > be the inverse of the highest Zmm conversion factor). yes, that's what I'm after ... I think it would be impractical to offer conversion factors which do not ensure that signals do not get clipped. .... argh ... there's always hidden levels of complexity with ambisonics. So I need to provide a different gain depending on the order.... ok, will include that into the document. > Also, why not W00, X10, Y10, Z11 instead of W0, X1, Y1, Z1 ? I do not care about the naming scheme. Am open to any other suggestions. > Apart from this I do find the naming scheme quite confusing. > In the form [XYZ]ab we have a = l and b = l - abs(m). > > The alternative is [XY]ab, whith a = l and b = abs(m), > in other words b is the multiplier of the azimuth angle. > No need for Z, as it amounts to X*0. > >> (that will also help users route channels to Ambdec since Ambdec uses >> the FMH component channel names as Jack channel names) > > The current version does, since it's limited to 3rd order. New releases > do not have this limit and will use a different naming scheme (combining > ACN, l,m and the Fuma name where it exists). Can you convince me to use the ACN scheme? The objection I have with the ACN order is that the horizontal only component channels come after the ones that contain some vertical info. I could still use the ACN number but then users would wonder why they are out of order. Is there a better naming scheme based on l and m? Etienne > Ciao, > > -- > FA > > There are three of them, and Alleline. > > _______________________________________________ > Sursound mailing list > [email protected] > https://mail.music.vt.edu/mailman/listinfo/sursound > _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
