An algorithm to time-scale audio signals in real-time based on pitch-shifting is presented. The pitch-shifter is based on the modified short-time Fourier transform (STFT) a la Griffin and Lim, and resampling in the frequency domain. While the magnitude of the modified STFT is specified in the problem, the short-time phase is determined by an error minimization criterion. The problem of efficiently computing this phase is discussed.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=5739
(757KB)
Click to purchase paper as a non-member 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 Join the AES. If you need to check your member status, login to the Member Portal.
