
UltraPitch Manual
10
NOTE: Different instruments require different formant-correction. UltraPitch has a
set of preset Pitch/Formant Link curves to help you obtain the ideal formant for each
degree of pitch-shift.
4 You’ll notice while shifting the pitch degree that the formant-correction is automatic, i.e. the formant
parameter is constrained to a recommended preset path
Automatic Formant Correction (‘Woods’ option)
5 Shift the pitch . If you have sel ected the Mi n - p i tch and Ma x - p i tch incorrect ly, s ome notes or word - ends may
e s c a pe the detecti on proce s s , re su l ting in gl i tch e s . To fix this, w a tch the Pitch detector at the point of t h e
gl i tches while re ad ju s ting the Min and Ma x - p i tch e s . A high Ma x - p i tch set ting may also re sult in gl i tch e s .
6 You may also consider altering the Mode to improve detection.
Time stretching (formant-corrected)
You can use UltraPitch Shift to perform time stretching on monophonic sounds.
1 Set the pitch detection (described in the Quick Start Chapter) correctly for voice or instrumental.
2 Suppose you wish to time stretch downwards to 80% and suppose your sound-file’s sample rate is
44.1kHz. Set both Pitch=m3rd+85 and Formant=m3rd+85. This is 3 half steps plus 85 cents.
Here’s how this is calculated:
number of half-steps to shift = log(100/80)/log(1.0595) = 3.86
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