This is what it used to look like (forgot to include the pic ;) Ed Ninja Jamm - a revolutionary new musix remix app from Ninja Tune and Seeper, for iPhone and iPad http://www.ninjajamm.com/
Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! http://sharktracks.co.uk/ ----- Original Message ----- > From: Ed Kelly <morph_2...@yahoo.co.uk> > To: i go bananas <hard....@gmail.com>; Ivica Ico Bukvic <i...@vt.edu> > Cc: PD List <pd-l...@iem.at>; pddev <pd-dev@iem.at> > Sent: Thursday, 9 May 2013, 14:33 > Subject: Re: [PD] Rewriting a unified phasor / metro object for reading tables > > I figured out how to do this. > > Generally the problem is this: the signals to run four independent tracks in > my > patch are all devised from one phasor~ object that scans a single bar of > material. Clicks then appear in the material when jumping from one bar to the > next, because the control events are quantized to the 64 samples of a block. > So > we get lines like the picture enclosed that read the material using tabread~. > > In order to get rid of the clicks, I have an alternative method for reading > the > material _without_ adding any new DSP objects (this has to run on an iPhone > 4). > It involves the phasor~-esque object ramping from 0 to 8 over 8 bars or not, > depending on whether it is jumping around or smoothly reading the 2, 4 or > 8-bar > loop. > > I already have this working - it has to detect when the ramp is crossed and > generate a clock signal from it for the intra-bar rhythms. I took phasorshot~ > as > my prototype, but that had the same problem as before, namely that non-signal > pulses are quantized to 64 sample blocks. I tried using clocks but they went > out > of sync while the tempo was being changed of course. > > So, I built an object where all the clocks are derived from the phasor ramp, > but > sent out as control rather than DSP signals. It uses more CPU than phasor~ > does > (~70% more) but no matter how much you speed-up or slow down the phasor~ > on-the-fly, the clocks never go out-of-sync. It's called phasorbars~. > > I'll be uploading a version of the external soon to svn, and anyone > who's downloaded Ninja Jamm for their i-device will get an update soon also. > > Cheers, > Ed >> >> >> why not just make a half speed phasor~, retrigger the phase to zero with a > normal metro, and then multiply the output by 2? >> >> >> >> >> >> >> >> On Thu, May 9, 2013 at 10:09 AM, Ivica Ico Bukvic <i...@vt.edu> wrote: >> >> Assuming you want a pulse in non-signal domain, you could use disis_phasor~ > (see http://l2ork.music.vt.edu/main/?page_id=56 for download links) which > outputs a bang every time ramp is crossed. This is only accurate to the > nearest > sigvs size (by default 64 bytes) as there is no guarantee that you will get a > msg interrupt exactly at the time ramp has crossed. >>> >>> HTH >>> >>> From:pd-list-boun...@iem.at [mailto:pd-list-boun...@iem.at] On Behalf Of > Ed Kelly >>> Sent: Wednesday, May 08, 2013 5:00 PM >>> To: PD List; pddev >>> Subject: [PD] Rewriting a unified phasor / metro object for reading > tables >>> >>> Hi Lists(s), >>> >>> I'm rewriting phasor~ and unifying it with metro so that a pulse is > generated from the boundaries of each ramp - so that bars of music can be > read > using tabread~ objects with a sample-accurate metro. >>> >>> I'm sure someone will say this can already be done, but it has to be > dropped into the Ninja Jamm patch, so there isn't really time to rewrite the > rest of the patch. >>> >>> I don't fully understand the way phasor~ wraps, but I have the > object firing out bar numbers correctly. I'm putting clocks in for 16ths and > 24ths of the beat, initiated on each wrap. I need to minimise CPU, so what I > want to know is this: >>> >>> Does phasor~ always start from 0 and go to 1, i.e. is there always a > signal value of 0 at the start of the ramp and a signal value of 1 at the > end? > As I write this, my common sense tells me it should be "yes" but I > want to make sure. I suppose I should just try it really... >>> >>> Cheers, >>> Ed >>> >>> Ninja Jamm - a revolutionary new musix remix app from Ninja Tune and > Seeper, for iPhone and iPad >>> http://www.ninjajamm.com/ >>> Gemnotes-0.2: Live music notation for Pure Data, now with dynamics! >>> http://sharktracks.co.uk/ >>> _______________________________________________ >>> pd-l...@iem.at mailing list >>> UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list >>> >>> >> >> >> >
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