Implementing a pitch shifter

1. How is pitch shifting done?
2. How do you pitch a shift without losing quality?
3. What is pitch shifting algorithm?

How is pitch shifting done?

In digital recording, pitch shifting is accomplished through digital signal processing. Older digital processors could often shift pitch only in post-production, whereas many modern devices using computer processing technology can change pitch values virtually in real time.

How do you pitch a shift without losing quality?

If you want your sample to be faster and higher in pitch, increase the session's sampling rate. If you want your sample to be slow and lower in pitch, decrease the session's sampling rate. Notice that when you select the 192kHz sampling rate, the track plays exactly twice as fast, and at twice the pitch.

What is pitch shifting algorithm?

The aim of pitch shifting algorithms is to create a change in pitch without creating a change in the replay rate. Pitch shifting can be done by performing a time stretch using PSOLA and resampling.