High-Quality Consistent Analysis-Synthesis in Sinusoidal Coding
In this paper, we discuss several improvements in sinusoidal coding. First, we present an analysis method which estimates windowed sinusoids to represent a segment of an input speech or audio signal. The window used in the analysis is the same magnitude-complementary window as is used in overlap-add synthesis, which makes analysis consistent with synthesis. It is hown how the overlapping nature of segments can be accounted for in the sinusoidal estimation. Second, we present techniques for optimization of sinusoidal parameters based on the squared difference between the input signal and reconstruction. Efficient methods for computation are also discussed. Experimental results verify that our procedures provide a significant improvement in reconstruction accuracy.
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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.