Internet AdvPitchShift2 v2.01.3

You can compensate for formant changes during "pitch shift", or use only "formant shift" to change the character of vocal material.
In addition, by shifting only the overtone components, it is also effective for instrumental sounds other than vocal parts.
FormantShift has the same effect as the GEN parameter in VOCALOID, but it can be applied in real time to WAV exported by VOCALOID.
In addition, it is possible to easily add changes in the song with a DAW that supports automation.
PitchShift achieves the highest standard of PitchShift with little sound quality deterioration.
Formant shift by PitchShift can be corrected by FormantShift at the same time.
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https://www.ssw.co.jp/products/vst/advpitchshift2/