<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body><div class="auto-created-dir-div" dir="auto" style="unicode-bidi: embed;"><style>p{margin:0}</style><div>Dear Adam and list,</div><div><p><br></p><p>I'm so sorry for the confusing description.</p><p>uPC1252 is used just for total VCA in the polysynths.</p><p>Please check out the schematics of Juno106.</p><p>I guess they use 1252 to recall output signal level.</p><p><br></p></div><br><blockquote style="margin: 0 auto; padding: 0 2em; border-left:2px solid #00ADE5; white-space: pre-wrap "><br><br>------ Original Message ------<br>差出人: "Adam Inglis (synthDIY)" <synthdiy@adambaby.com><br>To: "houshu@muj.biglobe.ne.jp" <houshu@muj.biglobe.ne.jp>; "synth-diy@synth-diy org" <synth-diy@synth-diy.org><br>送信済み: 日曜日, 2021/10/24 10:47<br>件名: Re: [sdiy] Blackmer VCA cell<br><br><br><div><br><blockquote><div>On 23 Oct 2021, at 10:52 pm, houshu--- via Synth-diy <<a href="mailto:synth-diy@synth-diy.org"><span class="wt_Email">synth-diy@synth-diy.org</span><span></span></a>> wrote:</div><br class="Apple-interchange-newline"><div><span style="font-family: Helvetica;font-size: 12.0px;font-style: normal;font-weight: normal;letter-spacing: normal;text-indent: 0.0px;text-transform: none;white-space: normal;word-spacing: 0.0px;text-decoration: none;float: none;display: inline;">NEC uPC1252H2 uses a Blackmer cell, which were used in some Roland synths for loudness control, not for VCA with ADSR.</span></div></blockquote></div><br><div>Sam, that’s interesting.</div><div>Do you recall how it was implemented, and in what synths?</div><div><br></div><div>“Loudness” suggests it was compensating for something.</div><div><br></div><div>A</div></blockquote></div></body></html>