Patent ID: 7340272
Filing Date: 2008-03-04
Classification: H04M,H04R,H04S

Abstract:
1. A mobile communication terminal with a three-dimensional surround-sound effect system, the mobile communication terminal having a data processing section for coding and modulating a transmitting signal or demodulating and decoding a receiving signal, and having an audio processing section for reproducing an audio signal input from the data processing section or transferring the audio signal input from a microphone to the data processing section, said audio signal comprising a first audio signal fed to first speaker and a second audio signal fed to a second speaker, both of which being coupled with the audio processing section, said surround-effect sound system comprising: a first audio path adapted to include a first amplifier for amplifying the first audio signal and a first delay for delaying in phase the first audio signal; a second audio path adapted to include a second amplifier for amplifying the second audio signal and a second delay for delaying in phase the second audio signal; a voltage measurer for making a measurement to a voltage of the first and second audio signals; a comparator for making a comparison between the voltages of the first and the second audio signals to render comparative information; and an audio controller configured to transmit an audio signal having a large voltage to an amplifier of a first corresponding audio path and transmit an audio signal having a small voltage to a delay of a second corresponding audio path wherein the amplifier and the delay are not part of the same path, according to the comparative information.