Launch Ableton and load the vocal sample to which you want to apply the pitch-shifting effect onto the first audio channel.
Double-click the loaded vocal sample to open its waveform view. Click the "Warp" button to lock the clip's timing into place, ensuring that it doesn't speed up when you raise the pitch..
Click and drag the "Transpose" knob up to "12." This pitches the vocal sample up by an octave. Click "Play" to listen to the high-pitched vocal effect.
Load the vocal sample into an audio channel in your digital audio program. Add the Pitch-Shifter plug-in to the channel.
Turn Pitch-Shifter's "Coarse" knob to "12." Turn the "Dry/Wet" knob to "100."
Play the vocal to listen to the pitched-up sample.
Open the vocal file into your digital audio workstation. Apply the SoundShifter Pitch plug-in to the channel containing the vocal.
Click and drag the "Semitones" field to "12." Alternatively, you can click and drag the "Interval" control to "Octave."
Click the "Mode" button until it reads "Smooth." Play the vocal to listen to the effect.