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Old 11-07-2016, 04:19 PM
Musicat Musicat is offline
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Join Date: Oct 1999
Location: Sturgeon Bay, WI USA
Posts: 19,903
Although you often read that the tape was slowed down by half or sped up by twice, in a professional studio there is no need to limit yourself to such fixed ratios. All professional recorders I've seen have a speed control, VSO (Variable Speed Oscillator) that can raise or lower the speed/pitch by any amount.

I once used this function on a 16 track machine, recording a standard B flat trumpet one step low. When played at normal speed with the other tracks, it sounded like a D trumpet -- higher and a little thinner in timbre, the sound I was going for.