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<p>dspsynth // Jan Ostman needs a warning given the large number of
people who have not received what they've paid for over the last
few years - spread across various forums, kickstarters etc. <br>
But there are some projects that are now open-sourced, so maybe
interesting to look.<br>
</p>
<br>
<div class="moz-cite-prefix">On 20/09/2017 03:21, Mike HEQX wrote:<br>
</div>
<blockquote cite="mid:2daa5080-bc89-b36e-27cc-c592f9dc0b9a@heqx.com"
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<p>Yes I did look at the flat keys piece recently as well as the
dsp synth psuedo-tog which is $25.</p>
<p><a moz-do-not-send="true" class="moz-txt-link-freetext"
href="http://www.dspsynth.eu/">http://www.dspsynth.eu/</a></p>
<p>This really interesting page</p>
<p><a moz-do-not-send="true" class="moz-txt-link-freetext"
href="http://www.armory.com/%7Erstevew/Public/SoundSynth/TopOctave/topdividers.html">http://www.armory.com/~rstevew/Public/SoundSynth/TopOctave/topdividers.html</a></p>
<p>This article</p>
<p><a moz-do-not-send="true" class="moz-txt-link-freetext"
href="http://www.logosfoundation.org/kursus/2073.html">http://www.logosfoundation.org/kursus/2073.html</a></p>
<p>and this</p>
<p><a moz-do-not-send="true" class="moz-txt-link-freetext"
href="http://www.narcisivalter.it/progetti/top-octave-synthesizer-5010.html">http://www.narcisivalter.it/progetti/top-octave-synthesizer-5010.html</a><br>
</p>
<p><br>
</p>
<p><br>
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<br>
<div class="moz-cite-prefix">On 9/19/2017 7:49 PM, Dave Garfield
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1102991921.4772906.1505864950729@mail.yahoo.com"><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]-->
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<div id="yui_3_16_0_ym19_1_1505862289768_38119">Hi, all</div>
<div id="yui_3_16_0_ym19_1_1505862289768_38899" dir="ltr">While
it doesn't do PWM, an English company named FlatKeys
produces a Top Octave Generator replacement for the classic
synths and organs which use a 50240 TOG. This one isn't
just a divider; it generates 12 separate top octave waves
which are in tune, unlike the originals' approximations.<br>
It will also do vibrato, as it has a master clock. It can
switch octaves if desired, or transpose keys. <br>
The price is £52.80.<br>
I haven't tried one out, but have been meaning to for a long
time. If anyone else out there has, I'd love to hear about
it - warts and all. Maybe it will work for you, or someone
else out there.</div>
<div id="yui_3_16_0_ym19_1_1505862289768_38872" dir="ltr"><a
class="enhancr2_25de5670-1564-a9fb-8d18-3b2c135ea869
edited-link-editor"
id="yui_3_16_0_ym19_1_1505862289768_38871"
href="http://www.flatkeys.co.uk/MK50240.html"
moz-do-not-send="true">FK50240 MK50240</a> </div>
<div id="yui_3_16_0_ym19_1_1505862289768_39147" dir="ltr">I am
NOT affiliated with FlatKeys in any way, shape, form or
manner. Just thought that this might be a good solution for
replacing scarce top octave divider chips.</div>
<div id="yui_3_16_0_ym19_1_1505862289768_38898"><br>
</div>
<div class="yahoo-link-enhancr-card
yahoo-link-enhancr-not-allow-cover ymail-preserve-class
ymail-preserve-style"
id="enhancr2_25de5670-1564-a9fb-8d18-3b2c135ea869"
style="max-width:400px;font-family:'Helvetica Neue',
Helvetica, Arial, sans-serif;" dir="ltr"
data-type="yenhancr"
data-url="http://www.flatkeys.co.uk/MK50240.html"
data-size="medium" data-category="article" data-embed-url=""
contenteditable="false"> <a class="yahoo-enhancr-cardlink"
id="yui_3_16_0_ym19_1_1505862289768_38888"
style="text-decoration:none !important; color: #000
!important" href="http://www.flatkeys.co.uk/MK50240.html"
target="_blank" rel="noreferrer" moz-do-not-send="true">
<table class="card-wrapper"
id="yui_3_16_0_ym19_1_1505862289768_38887"
style="max-width:400px;" border="0" cellpadding="0"
cellspacing="0">
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<tr id="yui_3_16_0_ym19_1_1505862289768_38885">
<td id="yui_3_16_0_ym19_1_1505862289768_38884"
width="400">
<table class="card-info"
id="yui_3_16_0_ym19_1_1505862289768_38883"
style="background:#fff;max-width:400px;border:1px
solid #e0e4e9;border-bottom:3px solid #000000;"
border="0" cellpadding="0" cellspacing="0"
width="100%">
<tbody
id="yui_3_16_0_ym19_1_1505862289768_38882">
<tr id="yui_3_16_0_ym19_1_1505862289768_38881">
<td style="vertical-align:top;padding:16px 0
16px 12px;"> <br>
</td>
<td
id="yui_3_16_0_ym19_1_1505862289768_38880"
style="vertical-align:middle;padding:16px
12px;width:99%;">
<h2 class="card-title" style="margin:0 0
4px
0;font-size:16px;font-family:'Helvetica
Neue', Helvetica, Arial,
sans-serif;word-break:break-word;">FK50240
MK50240</h2>
</td>
<td class="card-share-container"><br>
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</tr>
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</table>
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</tbody>
</table>
</a></div>
<div id="yui_3_16_0_ym19_1_1505862289768_39151"><br>
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<div class="qtdSeparateBR"><br>
<br>
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<div class="yahoo_quoted" style="display: block;">
<div style="font-family: verdana, helvetica, sans-serif;
font-size: 16px;">
<div style="font-family: HelveticaNeue, Helvetica Neue,
Helvetica, Arial, Lucida Grande, sans-serif; font-size:
16px;">
<div dir="ltr"><font face="Arial" size="2"> On Tuesday,
September 19, 2017 5:32 PM, Tom Wiltshire <a
moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:tom@electricdruid.net"><tom@electricdruid.net></a>
wrote:<br>
</font></div>
<br>
<br>
<div class="y_msg_container">
<div dir="ltr">Because the standard TOG is based on
dividers, you can’t add PWM. Run any width pulse
wave through a flip-flop and the output's a square,
after all.<br clear="none">
<br clear="none">
That said, there were some TOGs the produced 33%
pulse waves rather than squares (not sure exactly
what the internals were to do that) but there were
none that offered PWM.<br clear="none">
<br clear="none">
If you had twelve ramp oscillators for the
top-octave, you could arrange ramp+squares to give
you ramps at various divided octaves, and then use
those ramps to produce PWM, but it’d be a lot of
circuitry, and it’d probably get a bit sensitive.
Have a search for “sub-octave ramp wave” to get the
basic idea.<br clear="none">
<br clear="none">
HTH,<br clear="none">
Tom<br clear="none">
<br clear="none">
==================<br clear="none">
Electric Druid<br clear="none">
Synth & Stompbox DIY<br clear="none">
==================<br clear="none">
<br clear="none">
> On 20 Sep 2017, at 00:06, Mike HEQX <<a
href="mailto:mike@heqx.com" shape="rect"
ymailto="mailto:mike@heqx.com"
moz-do-not-send="true">mike@heqx.com</a>>
wrote:<br clear="none">
> <br clear="none">
> I wanted to do something with a TOG and I was
hoping I could add PWM to it. Not sure if you can
PWM the master clock though, but that's what I want
to try. After all you pitch bend it that way.<br
clear="none">
> <br clear="none">
> I not does that mean 12 pwm on the output of
the tog?<br clear="none">
> <br clear="none">
> <br clear="none">
> thoughts?<br clear="none">
> <br clear="none">
> <br clear="none">
> Mike<br clear="none">
> <br clear="none">
> _______________________________________________<br
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