Sound-reproducing apparatus and high frequency...

Details Sound-reproducing apparatus and high frequency... Sound-reproducing apparatus and high frequency...

2007-10-30

2007-10-30

Nguyen, Linh (Department: 2819)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C704S503000, C341S050000

Reexamination Certificate

active

11488829

ABSTRACT:
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 (202a) and the resulting audio signal is transmitted to a harmonizer (209a). Auxiliary information such as a sampling rate and a bit rate contained in the decoded audio signal is read out by a header reader (209b) and is transmitted to a harmonizer (209a). Communication of signals from/to respective portions is made through a bus (210). The harmonizer (209a) 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 (209b).

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