Kabushiki Kaisha Toshiba

Masao Iwasaki

Toshihiro Morohoshi

Tsuyoshi Hagiwara

Kazuo Konishi

Masafumi Umeda

Kazuhiro Takashima

Takato Katagiri

Isao Kaneko

Tomiyoshi Fukumoto

The invention provides a sound-reproducing apparatus and a high frequency interpolation-processing method in each of which high frequency interpolation processing having a light burden imposed thereon can be executed. Compressed audio data is decoded by a decoder () and the resulting audio signal is transmitted to a harmonizer (). Auxiliary information such as a sampling rate and a bit rate contained in the decoded audio signal is read out by a header reader () and is transmitted to a harmonizer (). Communication of signals from/to respective portions is made through a bus (). The harmonizer () has a preset for an interpolation band obtained in accordance with a format and a sampling frequency of the compressed audio data, and executes processing by referring to file information transmitted thereto from the header reader ().

Sound-reproducing apparatus and high frequency interpolation-processing method

A control system realizes a playback function by playing back stream data read out from a medium by using a decoder. When special playback functions corresponding to pause, fast forward, and rewind are to be performed, the control system moves a read start pointer to the head of a data block constructing a data format, and sets as a restart position of a playback operation.

Digital recording/playback apparatus

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Tokyo, Japan

Masao Iwasaki