COMP DSP 2010 presentations
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From: Vladimir Vassilevsky on 28 Jun 2010 15:16 The presentation of Rick Lyons "Improving FIR Filter Coefficient Precision" was added: http://www.compdsp.com/presentations/Lyons/Lyons-Precise%20FIR%20Coefficients.pdf COMP.DSP 2010 presentations: http://www.compdsp.com/presentations.htm //----------------- Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com
From: Manny on 28 Jun 2010 18:14 On Jun 28, 8:16 pm, Vladimir Vassilevsky <nos...(a)nowhere.com> wrote: > The presentation of Rick Lyons "Improving FIR Filter > Coefficient Precision" was added: > > http://www.compdsp.com/presentations/Lyons/Lyons-Precise%20FIR%20Coef... > > COMP.DSP 2010 presentations: > > http://www.compdsp.com/presentations.htm > > //----------------- > > Vladimir Vassilevsky > DSP and Mixed Signal Design Consultanthttp://www.abvolt.com Not to take away anything from the author, but as far as I can tell, people have been doing this for ages. In fact, the serial method could easily implement a parallel method with a device known in the digital world as "barrel shifter." In such a case, you'd store an unsigned value with the coefficient akin to an "instruction" in ISA to tell you how much you should barrel-shift per loop iteration. Regards, -Momo
From: steveu on 28 Jun 2010 20:58 >On Jun 28, 8:16=A0pm, Vladimir Vassilevsky <nos...(a)nowhere.com> wrote: >> =A0 The presentation of Rick Lyons "Improving FIR Filter >> Coefficient Precision" was added: >> >> http://www.compdsp.com/presentations/Lyons/Lyons-Precise%20FIR%20Coef... >> >> COMP.DSP 2010 presentations: >> >> http://www.compdsp.com/presentations.htm >> >> //----------------- >> >> Vladimir Vassilevsky >> DSP and Mixed Signal Design Consultanthttp://www.abvolt.com > >Not to take away anything from the author, but as far as I can tell, >people have been doing this for ages. In fact, the serial method could >easily implement a parallel method with a device known in the digital >world as "barrel shifter." In such a case, you'd store an unsigned >value with the coefficient akin to an "instruction" in ISA to tell you >how much you should barrel-shift per loop iteration. > >Regards, >-Momo Yep. Looks like another example of relearning a forgotten art of doing things efficiently. :-) Steve
From: Manny on 28 Jun 2010 21:49 On Jun 29, 1:58 am, "steveu" <steveu(a)n_o_s_p_a_m.coppice.org> wrote: > >On Jun 28, 8:16=A0pm, Vladimir Vassilevsky <nos...(a)nowhere.com> wrote: > >> =A0 The presentation of Rick Lyons "Improving FIR Filter > >> Coefficient Precision" was added: > > http://www.compdsp.com/presentations/Lyons/Lyons-Precise%20FIR%20Coef... > > > > > > >> COMP.DSP 2010 presentations: > > >>http://www.compdsp.com/presentations.htm > > >> //----------------- > > >> Vladimir Vassilevsky > >> DSP and Mixed Signal Design Consultanthttp://www.abvolt.com > > >Not to take away anything from the author, but as far as I can tell, > >people have been doing this for ages. In fact, the serial method could > >easily implement a parallel method with a device known in the digital > >world as "barrel shifter." In such a case, you'd store an unsigned > >value with the coefficient akin to an "instruction" in ISA to tell you > >how much you should barrel-shift per loop iteration. > > >Regards, > >-Momo > > Yep. Looks like another example of relearning a forgotten art of doing > things efficiently. :-) > > Steve Indeed. Think of it as a hard-coded floating-point operation. -Momo
From: HardySpicer on 29 Jun 2010 06:25 On Jun 29, 1:49 pm, Manny <mlou...(a)hotmail.com> wrote: > On Jun 29, 1:58 am, "steveu" <steveu(a)n_o_s_p_a_m.coppice.org> wrote: > > > > > >On Jun 28, 8:16=A0pm, Vladimir Vassilevsky <nos...(a)nowhere.com> wrote: > > >> =A0 The presentation of Rick Lyons "Improving FIR Filter > > >> Coefficient Precision" was added: > > >http://www.compdsp.com/presentations/Lyons/Lyons-Precise%20FIR%20Coef... > > > >> COMP.DSP 2010 presentations: > > > >>http://www.compdsp.com/presentations.htm > > > >> //----------------- > > > >> Vladimir Vassilevsky > > >> DSP and Mixed Signal Design Consultanthttp://www.abvolt.com > > > >Not to take away anything from the author, but as far as I can tell, > > >people have been doing this for ages. In fact, the serial method could > > >easily implement a parallel method with a device known in the digital > > >world as "barrel shifter." In such a case, you'd store an unsigned > > >value with the coefficient akin to an "instruction" in ISA to tell you > > >how much you should barrel-shift per loop iteration. > > > >Regards, > > >-Momo > > > Yep. Looks like another example of relearning a forgotten art of doing > > things efficiently. :-) > > > Steve > > Indeed. Think of it as a hard-coded floating-point operation. > > -Momo Two adaptive filters in tandem one. Some nice analysis there. You need to get all the papers in the same format if you have a conference. Hardy
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