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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The Intellijel Rubicon (and Rubicon-2)
gives the option of generating pulse waves from Triangle, Saw, or Double-Saw
(twice the frequency). It’s not a whole synth, just a TZFM VCO.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Synth-diy [mailto:synth-diy-bounces@synth-diy.org]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Mattias Rickardsson<br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, January 03, 2020
6:57 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Richie Burnett<br>
<b><span style='font-weight:bold'>Cc:</span></b> Brian Willoughby; Synth DIY<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [sdiy] as3340
PW/tuning issue</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Fri, 3 Jan 2020 at 10:31, Richie Burnett <<a
href="mailto:rburnett@richieburnett.co.uk">rburnett@richieburnett.co.uk</a>>
wrote:<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
... The faster the rate of change of the LFO waveform the greater the pitch
modulation. Try whacking LFO speed up and listen to the seasick pitch warble on
most synths with pwm!<br>
<br>
However, pwm generated from a triangle waveform source results in both edges of
the pulse waveform being modulated equally and in opposite directions.
Therefore the centroid of the pulses doesn't move and there is no resulting
pitch modulation. That's one of the advantages of using a triangle wave instead
of sawtooth to generate PWM waveforms. <o:p></o:p></span></font></p>
</blockquote>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I'd say this chorus-y pitch warble is often a desired and/or useful
feature of the PWM setting for many people.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Is any commercial synth known for using the triangle wave to create the
pulse wave without warble?<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>/mr<o:p></o:p></span></font></p>
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