Apparatus and method for reproducing three dimensional stereo sound for communication terminal

Abstract

Disclosed are an apparatus and method for enabling sound data having a three-dimensional stereo effect to be reproduced in a mobile communication terminal. The three-dimensional stereophonic reproducing device of the mobile communication terminal includes: a memory for storing sound data having a three-dimensional stereophonic effect; a sound processing unit that decodes the sound data without distorting the three-dimensional stereo effect, thereby outputting the sound data as an analog signal; and a speaker for amplifying the analog signal and outputting the amplified analog signal. Therefore, it is possible to obtain a high-quality three-dimensional sound effect and excellent performance in reproducing the original sound.

Description

technical field [0001] The present invention relates to mobile communication terminals. In particular, the present invention relates to an apparatus and method capable of reproducing sound data with a three-dimensional stereo effect in a mobile communication terminal. Background technique [0002] Handy phones such as cellular phones and PCS (Personal Communication Services) phones, which are typical communication terminals, transmit sounds or alerts to the outside through a speaker so that users can recognize incoming calls while using the handy phone. With the development of communication and sound processing technologies and user needs, various studies are actively being conducted to reproduce richer sound in small communication terminals. In addition, the rapid spread of Internet use has made it possible to download various original music sounds and movies to communication terminals via the Internet, so user demands for reproducing original music sounds in communication...

AI Technical Summary

Problems solved by technology

When the 3D stereo sound data with the above huge size is approximated as SMAF using the synthesized sound table provided by the Yamaha sound chip, although the size of the sound data is slightly reduced, the 3D stereo effect of the original sound data will be significantly deteriorated

[0017] That is to say, because the Yamaha sound chip cannot fully support the three-dimensional stereo effect, and the original sound data is approximated by the synthesized sound table and pitch possessed by the chip, an error occurs, so that the traditional equipment cannot accurately reproduce the original sound data. has limitations

In addition, since the Yamaha sound chip causes distortion of a specific sound when synchronously reproducing speech and music sounds, when composing a melody sound, the first sound data including only the speech and the second sound data including only the melody must be stored separately, by This requires a very large storage capacity

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