A Hybrid Time and Frequency Domain Audio Pitch Shifting Algorithm
This paper presents an abstract algorithm that performs audio pitch shifting as a combination of a signal analysis, a filter bank and frequency shifting operations. Then, it is shown that two previously proposed pitch shifting techniques are actually concrete implementations of the presented abstract algorithm. One of them is implemented in the frequency domain whereas the other is implemented in the time domain. Based on an analysis and comparison of the properties of these two techniques (quality, artifacts, assumptions on the signal), we propose a new hybrid implementation working partially in the frequency domain and partially in the time domain, and achieving superior quality by taking the best from each of the two existing techniques.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members, $5 for AES members and is free for E-Library subscribers.