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</o:shapelayout></xml><![endif]--></head><body lang=FR-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Didier and SynthiMuse..<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Have a look at the attached Excel file..<br>This shows all the HEX voltage values for each steps of each scales<br>that have been put in lookup tables in my main.c code.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-CA style='font-family:"Calibri","sans-serif";color:#1F497D'>The beige cells region:<o:p></o:p></span></b></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>For example rows 4 to 36 shows the 12 ‘possible’ steps for each scales.<br>The <b>G</b> column shows the <b>Semi-Tone scale</b> so all its 12 vertical cells are filled with ‘threshold’ values.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>However the <b>M</b> column shows the <b>Triad major scale</b> which has only 3 steps in it.<br>Notice that all the scales steps are equally separated for ‘musical’ playing reason.<o:p></o:p></span></p><p class=MsoNormal><b><i><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Between the G to AE columns and the 4 to 36 rows:<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The horizontal lines separating each cells are where the ADC input value ‘force’ a new quantized output value change when reached.<br><br><o:p></o:p></span></i></b></p><p class=MsoNormal><b><span lang=EN-CA style='font-family:"Calibri","sans-serif";color:#1F497D'>The white and pink cells region:<o:p></o:p></span></b></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>For example rows 40 to 66 shows the 12 ‘possible’ DAC quantized output steps for each scales.<br>The <b>G</b> column shows the <b>Semi-Tone scale</b> so all its 12 lines are filled with quantized output values.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>However the <b>M</b> column shows the <b>Triad major scale</b> which has only 3 steps in it.<o:p></o:p></span></p><p class=MsoNormal><b><i><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Between the G to AE columns and the 40 to 66 rows:<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>All the white cells are where the quantized output values change.<br>All the pink cells are not used (no action by the quantizer).<o:p></o:p></span></i></b></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>For noise suppression design the ADC converter has a very small DC offset to exceed before reading 0.00v<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>This ADC input offset is 0x0281. See the blue cells.<o:p></o:p></span></p><p class=MsoNormal><b><i><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></i></b></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>A very small ‘schmith trigger’ region is tested around all the incoming ADC input values (beige cells)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>To avoid ‘bouncing’ between very close incoming ADC values.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Any questions ?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>JP<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=FR style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span lang=FR style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Didier Leplae [mailto:didierleplae@yahoo.com] <br><b>Envoyé :</b> 20 septembre 2021 15:44<br><b>À :</b> The SynthiMuse<br><b>Cc :</b> Jean-Pierre Desrochers; synth-diy mailing list<br><b>Objet :</b> Re: [sdiy] Introducing my new M116 Multi-Scale Quantizer !<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>I’m not sure how successive approximation works. <o:p></o:p></p></div><div><p class=MsoNormal>But if you are hunting for the nearest note and some are further apart than others, won’t the result still be that some notes take longer to reach than others?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><br><br><o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>On Sep 20, 2021, at 2:19 PM, The SynthiMuse <<a href="mailto:synthimuse@gmail.com">synthimuse@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal><span style='font-family:"Tahoma","sans-serif"'></span><o:p></o:p></p><div><div><p class=MsoNormal>Hi Didier<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>I'm not sure how Jean-Pierre dealt with this issue but in the Synthimuse, I gave each note in the scale equal weight and 'hunted', by successive approximation to find the note that equated closest to the input value. <o:p></o:p></p><div><p class=MsoNormal>The SM had ( who knows, it may have again if I can get my finger out :-) ) an analog input so it's similar to the situation that Jean-Pierre is dealing with.<o:p></o:p></p></div><div><p class=MsoNormal>Gerry<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Mon, 20 Sep 2021, 19:45 Didier Leplae via Synth-diy, <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><p class=MsoNormal>That’s really beautiful! I have a question for you.<br><br>I was working on a eurorack quantizer a while back but never finished. On mine, if I were doing like you are in the demo, feeding a slow triangle LFO into the quantizer, and having it set to a scale with some uneven intervals (for example any diatonic scale) then the time that each note holds is also uneven (proportional to the size of the interval. <br>I’m guessing you have programmed yours to compensate for this. Can you explain a bit about how that works? Also, how does this play out if you input a sequence with uneven durations for example?<br><br>> On Sep 20, 2021, at 8:54 AM, Jean-Pierre Desrochers <<a href="mailto:jpdesroc@oricom.ca" target="_blank">jpdesroc@oricom.ca</a>> wrote:<br>> <br>> <span style='font-family:"Tahoma","sans-serif"'></span>Thank you Roman !<br>> <br>> JP<br>> <br>> ******************************************************<br>> <br>> -----Message d'origine-----<br>> De : Roman Sowa [mailto:<a href="mailto:modular@go2.pl" target="_blank">modular@go2.pl</a>] <br>> Envoyé : 20 septembre 2021 05:46<br>> À : Jean-Pierre Desrochers; <a href="mailto:synth-diy@synth-diy.org" target="_blank">synth-diy@synth-diy.org</a><br>> Objet : Re: [sdiy] Introducing my new M116 Multi-Scale Quantizer !<br>> <br>> Always a pleasure to watch.<br>> Thanks for posting it.<br>> <br>> Roman<br>> <br>> W dniu 2021-09-17 o 20:55, Jean-Pierre Desrochers pisze:<br>>> Hi all !<br>>> <br>>> After around 4 months of work..<br>>> <br>>> Introducing my new *M116 Multi-Scale Quantizer* !<br>>> <br>>> It contains 25 selectable scales listed here:<br>>> <br>>> */Semi-Tones/*<br>>> <br>>> */Whole-Tones/*<br>>> <br>>> */Pentatonic major/*<br>>> <br>>> */Pentatonic minor/*<br>>> <br>>> */Heptatonic major/*<br>>> <br>>> */Heptatonic minor/*<br>>> <br>>> */Triad major/*<br>>> <br>>> */Triad augm./*<br>>> <br>>> */Triad minor/*<br>>> <br>>> */Triad dimin./*<br>>> <br>>> */Augmented/*<br>>> <br>>> */Diminished/*<br>>> <br>>> */Athar Kurd/*<br>>> <br>>> */Kumoi/*<br>>> <br>>> */Hon-Kumoi-Joshi/*<br>>> <br>>> */Egyptian/*<br>>> <br>>> */Nikriz/*<br>>> <br>>> */Persian/*<br>>> <br>>> */Hebrew/*<br>>> <br>>> */Dorian Mode/*<br>>> <br>>> */Phrygian Mode/*<br>>> <br>>> */Lydian Mode/*<br>>> <br>>> */Mixoydian Mode/*<br>>> <br>>> */Locrian Mode/*<br>>> <br>>> */Gypsy/*<br>>> <br>>> It also offers:<br>>> <br>>> 0 to +8.00vdc CV IN / OUT span<br>>> <br>>> Lag control on quantized output<br>>> <br>>> 12 transpose keys from G to F#<br>>> <br>>> Gate IN / OUT connectors<br>>> <br>>> MIDI output (16 channels)<br>>> <br>>> You can watch a Youtube demo HERE <br>>> <<a href="https://www.youtube.com/watch?v=UxPzGvb0HrQ" target="_blank">https://www.youtube.com/watch?v=UxPzGvb0HrQ</a>>.<br>>> <br>>> <br>>> The fact that all generated quantized notes are ‘IN TUNE’<br>>> makes this module very ‘musical’..<br>>> <br>>> I’m very happy !!!<br>>> <br>>> Thanks for watching.<br>>> <br>>> JP<br>>> <br>>> <br>>> _______________________________________________<br>>> Synth-diy mailing list<br>>> <a href="mailto:Synth-diy@synth-diy.org" target="_blank">Synth-diy@synth-diy.org</a><br>>> <a href="http://synth-diy.org/mailman/listinfo/synth-diy" target="_blank">http://synth-diy.org/mailman/listinfo/synth-diy</a><br>>> Selling or trading? Use <a href="mailto:marketplace@synth-diy.org" target="_blank">marketplace@synth-diy.org</a><br>>> <br>> <br>> <br>> _______________________________________________<br>> Synth-diy mailing list<br>> <a href="mailto:Synth-diy@synth-diy.org" target="_blank">Synth-diy@synth-diy.org</a><br>> <a href="http://synth-diy.org/mailman/listinfo/synth-diy" target="_blank">http://synth-diy.org/mailman/listinfo/synth-diy</a><br>> Selling or trading? Use <a href="mailto:marketplace@synth-diy.org" target="_blank">marketplace@synth-diy.org</a><br><br><br>_______________________________________________<br>Synth-diy mailing list<br><a href="mailto:Synth-diy@synth-diy.org" target="_blank">Synth-diy@synth-diy.org</a><br><a href="http://synth-diy.org/mailman/listinfo/synth-diy" target="_blank">http://synth-diy.org/mailman/listinfo/synth-diy</a><br>Selling or trading? Use <a href="mailto:marketplace@synth-diy.org" target="_blank">marketplace@synth-diy.org</a><o:p></o:p></p></blockquote></div></div></blockquote></div></body></html>