number6 wrote:

GSchnitzer wrote:

number6 wrote:

At percentages like 5-10% it wouldn't be noticable. It's not like a chipmunks record where the pitch shift is that drastic.
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Well, I'm not a physicist and I'm not much of a musician, but I think increasing the voice by exactly one octave would require the tape speed to be exactly doubled. How many octaves' difference do you think there are between Throne's original Keeper voice in "The Cage" and the new higher-pitched Keeper voice from "The Menagerie?"
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The Chipmunks were pitched exactly one octave. As you can hear, that is a drastic change of pitch. With the Keeper, we're talking a few semitones at best. You'd be amazed at how much that changes someone's voice.
Throne's original Keeper voice isn't shifted at all. That's his performance. You can hear that tonality when he speaks as Commodore Mendez, but speed that up just a little bit, and then you get the Keeper we know from the Menagerie.
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A few semitones apart--so maybe three or four? So three semitones would require that the tape speed be increased by 25%. I think that would be a noticeable difference between what you heard and what you saw on the actor's lips.