Data processing apparatus

• Main Authors: Kondo, Tetsujiro, Watanabe, Tsutomu, Kimura, Hiroto
• Format: Patent
• Language: English
• Published: 16.12.2008

The present invention relates to a data processing apparatus capable of obtaining high-quality sound data. A tap generation section generates a prediction tap used for a process in a prediction section by extracting decoded speech data in a predetermined positional relationship with subject data of interest within the decoded speech data such that coded data is decoded by a CELP method and by extracting an I code located in a subframe according to a position of the subject data in the subject subframe. Similarly to the tap generation section , a tap generation section generates a class tap used for a process in a classification section . The classification section performs classification on the basis of the class tap, and a coefficient memory outputs a tap coefficient corresponding to the classification result. The prediction section performs a linear prediction computation by using the prediction tap and the tap coefficient and outputs high-quality decoded speech data. The present invention can be applied to mobile phones for transmitting and receiving speech.