Re: multiband xover
Steve Harris <[email protected]> Fri, 8 Feb 2013 23:52:06 +0000
| Newsgroups | gmane.comp.audio.jamin.devel |
|---|---|
| Message-ID | <EMEW3|60dbce78c3de899b2e95abb045bf53e1p17NqQ0aS.W.Harris|ecs.soton.ac.uk|[email protected]> |
On 8 Feb 2013, at 21:38, Patrick Shirkey wrote: > = > On Sat, February 9, 2013 8:00 am, Steve Harris wrote: >> On 8 Feb 2013, at 18:09, Patrick Shirkey wrote: >> = >>> = >>> On Sat, February 9, 2013 3:31 am, Steve Harris wrote: >>>> Sorry, I've not been following the conversation. >>>> = >>>> Is this a new x-over algorithm? If so, it should replace the old one - >>>> the >>>> X-over was one of the weakest parts. >>>> = >>> = >>> = >>> We can definitely upgrade the algorithm. Do you recall what the issue >>> is? >>> = >>> Or maybe it would be better to explain what the existing algorithm >>> does=85? >> = >> The existing algorithm uses the FFT data, which makes a poor x-over - I >> can't remember exactly why, I think there might be ringing in the freq >> domain or something? >> = > = > Do you think that might have been fixed with the switch to the > Kaiser-Bessel window? It could yes, but I'm too rusty on exactly what that would do. - Steve > = >> You could tell by muting two of the three bands and putting whitenoise >> through it, and looking at the spectrum. >> = >> It pieces back together perfectly, but each band of the x-over in >> isolation is a bit ugly. I don't know how much of an issue it is, to be >> honest, but I seem to remember it was one of the weakest parts sonically. >> = >> My knowledge of filters isn't (and wasn't) good enough to design a good >> x-over that works at arbitrary sampling frequencies. I had a go with a >> multipole IIR, but it wasn't as clean sounding as the FFT. >> = >> - Steve >> = >>>> On 2013-02-07, at 23:05, Patrick Shirkey <[email protected]> >>>> wrote: >>>> = >>>>> So, the question now is how do we manage the 2nd xover? >>>>> = >>>>> The obvious solution is to add multiple sliders and effectively >>>>> replicate >>>>> the first xover but with more sliders. However that might look a bit >>>>> messy. Does anyone have a better idea for a control widget? >>>>> = >>>>> If we replicate the first xover then we can keep all the sliders >>>>> viewable >>>>> but disabled until required or do we show/hide them? >>>>> = >>>>> How does the user choose the number of bands easily. It seem more >>>>> useful >>>>> to have that functionality directly in the main window rather than >>>>> having >>>>> to open the preferences panel just to enable/disable a band. >>>>> = >>>>> We could have check boxes next to the sliders to enable/disable the >>>>> bands. >>>>> If enabled the output controls will be added to a scrollable panel? >>>>> = >>>>> Or maybe there is a better way? >>>>> = >>>>> = >>>>> = >>>>> -- >>>>> Patrick Shirkey >>>>> Boost Hardware Ltd >>>>> = >>>>> ---------------------------------------------------------------------= --------- >>>>> Free Next-Gen Firewall Hardware Offer >>>>> Buy your Sophos next-gen firewall before the end March 2013 >>>>> and get the hardware for free! Learn more. >>>>> http://p.sf.net/sfu/sophos-d2d-feb >>>>> _______________________________________________ >>>>> Jamin-devel mailing list >>>>> [email protected] >>>>> https://lists.sourceforge.net/lists/listinfo/jamin-devel >>>> = >>>> = >>>> ----------------------------------------------------------------------= -------- >>>> Free Next-Gen Firewall Hardware Offer >>>> Buy your Sophos next-gen firewall before the end March 2013 >>>> and get the hardware for free! Learn more. >>>> http://p.sf.net/sfu/sophos-d2d-feb >>>> _______________________________________________ >>>> Jamin-devel mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/jamin-devel >>>> = >>> = >>> = >>> -- >>> Patrick Shirkey >>> Boost Hardware Ltd >>> = >>> -----------------------------------------------------------------------= ------- >>> Free Next-Gen Firewall Hardware Offer >>> Buy your Sophos next-gen firewall before the end March 2013 >>> and get the hardware for free! Learn more. >>> http://p.sf.net/sfu/sophos-d2d-feb >>> _______________________________________________ >>> Jamin-devel mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/jamin-devel >> = >> = >> ------------------------------------------------------------------------= ------ >> Free Next-Gen Firewall Hardware Offer >> Buy your Sophos next-gen firewall before the end March 2013 >> and get the hardware for free! Learn more. >> http://p.sf.net/sfu/sophos-d2d-feb >> _______________________________________________ >> Jamin-devel mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/jamin-devel >> = > = > = > -- > Patrick Shirkey > Boost Hardware Ltd > = > -------------------------------------------------------------------------= ----- > Free Next-Gen Firewall Hardware Offer > Buy your Sophos next-gen firewall before the end March 2013 = > and get the hardware for free! Learn more. > http://p.sf.net/sfu/sophos-d2d-feb > _______________________________________________ > Jamin-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/jamin-devel ---------------------------------------------------------------------------= --- Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 = and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb