Change Pitch
From Audacity Manual
- Accessed by:
Pitch
If you know the key the original recording is in and the key you want to change it to, use this section of the dialog. In the example above, the key is being changed from F up to G.
Semitones (half-steps)
If you don't know the key the original recording is in but you know how many semitones it needs to be changed, enter that value here. For example you could duplicate a vocal track and then apply Change Pitch with a value of +7 semitones (a major fifth) to create a harmony vocal.
Frequency (Hz)
If you know that a particular frequency needs to be changed to another frequency, enter those values in the from and to input boxes.
Percent Change
If you would like to change the pitch by a given percent, enter a value in this input box or use the slider.
Limitations
Change Pitch is a time-stretching effect, because it defies the normal expectation that to lower the pitch of the audio it is necessary to reduce its speed (and thus its length) and vice-versa. As with any time-stretching effect, some audible distortions will be expected at more extreme settings.
Due to weaknesses in its algorithm, Change Pitch does not keep the length exactly as before. This makes Change Pitch unsuitable for changing the pitch of individual very short notes. To avoid this problem, you can use instead, setting initial and final pitch change to the same amount.
