AES E-Library

AES E-Library

Processing of Musical Tones Using a Combined Quadratic Polynomial-Phase Sinusoid and Residual (QUASAR) Signal Model

Document Thumbnail

A QUASAR signal model is proposed which combines quadratic polynomial-phase sinusoids and a residual for music analysis and synthesis. This signal model and the corresponding model parameter estimation schemes have some advantages over previously proposed ones in terms of memory use (data reduction), computational complexity, and synthesis quality. In contrast to the conventional time-frequency analysis approach, that is, obtaining -time-localized- model parameters on a frame-by-frame basis and with an energy fitting criterion, an estimation procedure is presented to obtain -globally optimized- model parameters with a global waveform fitting criterion. Different from the existing approach to the synthesis of the residual where a noise-driven source filter model is used, it is proposed to use LPC-based waveform coders for the synthesis of the residual. Results of synthesizing some popular musical instrument sounds are presented.

JAES Volume 45 Issue 7/8 pp. 571-584; July 1997
Publication Date:

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 and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

AES - Audio Engineering Society