<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">There is no agreed standard as to what constitutes "C0" or "C3" or "C4", so you won't find that.<div class=""><div class=""><br class=""></div><div class="">The lowest MIDI note 0 is a C and has a pitch of 8.18Hz. If you assume that Middle C (261.6Hz, the one below concert A) is C4, then that lowest C is C-2. But as mentioned, you'll see other interpretations. What doesn't change is the frequency. The "octave number" is arbitrary depending where you begin.</div><div class=""><br class=""></div><div class=""><div class=""><div><blockquote type="cite" class=""><div class="">On 10 Feb 2024, at 21:35, Jean-Pierre Desrochers <<a href="mailto:jpdesroc@oricom.ca" class="">jpdesroc@oricom.ca</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Does anybody know what is the first MIDI key note value of a 32 keys church organ pedal board ?<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">The pedal board starts with a C key then goes up 2 octaves and a half to the final G key.<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">But I cannot find what would be the MIDI first C key note value..<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">C0, C1, C2 ?? and what is the MIDI note value of it ?<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">I have a MIDI controller keyboard which has 36 (0x24) as the first C key MIDI note value.<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Read with MIDI-OX MIDI utility program..<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">So… Any clue for the name and MIDI note value for the first C key ?<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Thanks !<o:p class=""></o:p></div><div style="margin: 0cm; font-size: 11pt; 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