I’ve just understood the following:

  • The middle C on the Analog Four is displayed as C5
  • it generates a C3 sound (~261 Hz) on my spectrum in Ableton Live
  • 261Hz should be C4 according to Scientific Pitch Notation (SPN) (see note at the bottom)

So, the middle C is C4 (261Hz) in SPN, which is C5 in the Analog Four and C3 in Ableton Live!!
:smirk:

“Some manufacturers label the 440 Hz concert pitch not correctly as A3. It is really A4.
Cubase, Akai, and ProTools are starting differently at octave −2, or octave 1. That’s not the standard.
The first tone is the note A0 and that is 27.5 Hz. The classical music world is counting this way.
The tuning pitch for the Western music (concert pitch), is 440 Hz. It is named A4 or a’.”
Source: http://www.sengpielaudio.com/calculator-notenames.htm

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