This paper presents a procedure adaptation for the calculation of TD-PSOLA algorithm when the processing of pitch-shifting and time-stretching coefficients needs to be achieved in real-time at every new synthesis pitch mark. In the scope of standard TD-PSOLA algorithm, modification coefficients are defined from the analysis time axis whereas for real-time applications, pitch and duration control parameters need to be sampled at synthesis time. This paper will establish the theoretical correspondence between both approaches. Another issue related to real-time context concerns the trade-off between the latency required for processing and the type of analysis window used.
Authors:
Le Beux, Sylvain; Doval, Boris; d'Alessandro, Christophe
Affiliations:
LIMSI-CNRS, Université Paris-Sud XI, Orsay, France; LAM-IJLRA, Université Paris, Paris, France(See document for exact affiliation information.)
AES Convention:
128 (May 2010)
Paper Number:
8085
Publication Date:
May 1, 2010
Subject:
Audio Processing—Audio Coding and Machine Interface
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.