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R5 C4 VR1 also form a variable frequency element as well as controlling the feedback level. Hence the waa effect.<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Synth-diy <synth-diy-bounces@synth-diy.org> on behalf of Ingo Debus via Synth-diy <synth-diy@synth-diy.org><br>
<b>Sent:</b> 09 February 2024 20:28<br>
<b>To:</b> SDIY List <synth-diy@synth-diy.org><br>
<b>Subject:</b> Re: [sdiy] Unique sounding modules that can't have voltage control?</font>
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<div class="">Am 08.02.2024 um 23:04 schrieb Gordonjcp <<a href="mailto:gordonjcp@gjcp.net" class="">gordonjcp@gjcp.net</a>>:</div>
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<div class=""><span class="" style="font-family:Helvetica; font-size:14px; font-style:normal; font-variant-caps:normal; font-weight:normal; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">Do
you count a wahwah pedal as a module? You get them built as modules!</span><br class="" style="font-family:Helvetica; font-size:14px; font-style:normal; font-variant-caps:normal; font-weight:normal; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<br class="" style="font-family:Helvetica; font-size:14px; font-style:normal; font-variant-caps:normal; font-weight:normal; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
<span class="" style="font-family:Helvetica; font-size:14px; font-style:normal; font-variant-caps:normal; font-weight:normal; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none; float:none; display:inline!important">The
way that the pot adjusts the centre frequency of an LC bandpass filter is a bit magical, and cannot really be replicated by any CV circuit.</span><br class="" style="font-family:Helvetica; font-size:14px; font-style:normal; font-variant-caps:normal; font-weight:normal; letter-spacing:normal; text-align:start; text-indent:0px; text-transform:none; white-space:normal; word-spacing:0px; text-decoration:none">
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<div class="">Looking at this description of the Cry Baby:</div>
<div class=""><a href="https://www.electrosmash.com/crybaby-gcb-95" class="">https://www.electrosmash.com/crybaby-gcb-95</a></div>
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<div class="">It seems to me that the pot just sets the amount of feedback. This could be easily replaced by a VCA. Am I missing something?</div>
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<div class="">Ingo</div>
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