Electronics and Telecommunications Research Institute

Jung Chul Lee

Min Soo Hahn

Jae Woo Yang

Hang Seop Lee

Youngjik Lee

Sang Hun Kim

Jun Hee Park

Sang Won Kang

Byung Sik Yoon

Hyoung Jung Kim

Chang Yong Son

Dong Gyu Kang

The present invention provides a text-to-speech conversion system (TTS) forinterlockingsynchronizingwith multimedia and a method for organizing input data of the TTS which can enhance thenaturalnaturalnessof synthesized speech and accomplish the synchronization of multimedia with TTS by defining additional prosody information, the information required tointerlocksynchronizeTTS with multimedia, and interface betweenthesethisinformation and TTS for use in the production of the synthesized speech.

Text-to speech conversion system for synchronizing between synthesized speech and a moving picture in a multimedia environment and a method of the same

A method of formatting and normalizing continuous lip motions to events in a moving picture besides text in a Text-To-Speech converter is provided. A synthesized speech is synchronized with a moving picture by using the method wherein the real speech data and the shape of a lip in the moving picture are analyzed, and information on the estimated lip shape and text information are directly used in generating the synthesized speech.

System for synchronization between moving picture and a text-to-speech converter

A fast search method for LSP (Linear Spectrum Pair) quantization is provided. The fast search method in accordance with an embodiment of the present invention includes the following steps. A first step is obtaining a target vector and a code vector. The target vector and the code vector are converted for ordering property. A second step is generating a code book having the ordering property for sub-matrices by utilizing the target vector and the code vector. A third step is selecting a particular line for determining a search scope in the code books and sorting the code book in descending order with respect to component values of the particular line. A fourth step is determining the search scope by utilizing the ordering property of the target vector and the sorted code vectors. The fifth step is obtaining an error standard by utilizing the target vector and the code vector, and obtaining an optimal code vector by utilizing the error standard within the determined search scope.

Fast search method for LSP quantization

The present invention relates to an improved pitch modification method by glottal closure interval extrapolation. It is an object of the present invention to modify pitches of speech signals by the glottal closure interval extrapolation and to maintain quality of the modified speech, when concatenating original speech segments to synthesize speech. An input speech signal is converted into a digital speech signal. A glottal closure interval is detected in the digital speech signal so as to estimate vocal tract parameters by using pitch synchronous analysis. Vocal tract characteristic signals of the glottal closure interval and glottal characteristic signals of a glottal open interval are separated from each other according to the detected glottal closure interval. The separated vocal tract characteristic signals are extrapolated and reduced to a desired pitch length by the estimated vocal tract parameter. The extrapolated and reduced vocal tract characteristic signals are overlapped and added to the separated glottal characteristic signal so as to generate a synthetic speech signal which varies in a desired pitch length.

Pitch modification method by glottal closure interval extrapolation

The present invention provides a text-to-speech conversion system (TTS) for interlocking with multimedia and a method for organizing input data of the TTS which can enhance the natural of synthesized speech and accomplish the synchronization of multimedia with TTS by defining additional prosody information, the information required to interlock TTS with multimedia, and interface between these information and TTS for use in the production of the synthesized speech.

Growing community of inventors

Daejon-shi, South Korea

Jung Chul Lee