Author Topic: Wrong Octave  (Read 476 times)

Offline bosco

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Wrong Octave
« on: April 22, 2019, 11:27:24 »
Hi.

I'm fairly new to OpenMPT and trackers in general and I've discovered something puzzling which I hope someone here could clarify for me.

I've noticed that, by default, notes sound one octave lower than the note I entered. So if I enter A-4 and hit play I hear A-3. I've also checked with my chromatic guitar tuner to ensure I'm not mistaken.

I've tried Google for an explanation but haven't had much success.

Any guidance would be gratefully received.  :)

Offline LPChip

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Re: Wrong Octave
« Reply #1 on: April 22, 2019, 15:47:40 »
Are you using Samples or VST Instruments?
"Heh, maybe I should've joined the compo only because it would've meant I wouldn't have had to worry about a damn EQ or compressor for a change. " - Atlantis
"yes.. I think in this case it was wishful thinking: MPT is makng my life hard so it must be wrong" - Rewbs

Offline Saga Musix

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Re: Wrong Octave
« Reply #2 on: April 22, 2019, 16:05:47 »
OpenMPT does not use scientific pitch notation. OpenMPT's octaves are inherited from Impulse Tracker, where C-5 is the middle-C.
That being said, for the correct note to be heard, your sample (or plugin) must of course play a real middle-C (i.e. C4) at C-5 for the logic to work out.
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Offline bosco

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Re: Wrong Octave
« Reply #3 on: April 22, 2019, 19:43:52 »
@LPChip - I'm using a square wave sample.

@Saga Musix - So OpenMPT's middle-C is C-5. Well that would explain it. :)

I've figured out how to remap notes under the Instruments panel so I have a work around. Might be nicer if there was a `use scientific pitch notation'' tick box under Setup.

Thanks for the info. :)