Manner and the device which use cost function and the inverse filtering, select the formant based source and the data regarding the filter for encoding and synthesizing

摘要

An iterative formant analysis, based ON minimizing the arc-length of various curves and under various filter constraints estimates formant frequencies with desirable properties for text-to-speech applications. A class of arc-length cost functions may be employed. Some of these have analytic solutions and thus lend themselves well to applications requiring speed and reliability. The arc-length inverse filtering techniques are inherently pitch synchronous and are useful in realizing high quality pitch tracking and pitch epoch marking. IMAGE