The Pitch Shift raises or lowers the pitch of the sound, that is
to say the perceived frequency of the sound.
To Change the Pitch:
-
In Tools, choose Pitch Shift.
-
In the Pitch Shift parameters box, set a
Transposition ratio: greater than 1 to raise the
pitch or less than 1 to lower the pitch.
For example, a ratio of 2 will raise the pitch by 1 octave.
For example, a ratio of 0.5 will lower the pitch by 1 octave.
-
If needed, enable the Advanced parameters and,
In Window size, set the length of the window used by the phase vocoder
algorithm.
Set the windows Overlap.
Enable Phase Lock to activate the specific processing for linking
the phases along pure tones.
Note: Shifting the pitch is not suited to very short signals
and to very short transient/shocks events. If you need to shift the pitch of a very short
signal, you should set a short window size and disable the Phase Lock
option. Final result quality is not ensured for these kinds of signals.
The pitch of the current signal is modified. Applying a Pitch Shift to a signal changes the frequency content but keeps the relationship between the frequencies
(the ratio remains the same).
Note: During the processing, every frequency above the maximum frequency of the sound is removed
(half of the sampling frequency).
