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System and method for improving sound quality of multifunctional equipment of mobile communication terminal

A technology of equipment and sound quality, applied in branch office equipment, transmission system, telephone communication, etc., can solve problems such as reducing voice or ringing quality

Inactive Publication Date: 2004-10-06
LG ELECTRONICS INC
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, since there is a frequency coincident with the resonance frequency in the voice signal or the ring signal, an echo phenomenon that degrades the quality of the voice or ring is generated due to the weak vibration of the resonance frequency

Method used

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  • System and method for improving sound quality of multifunctional equipment of mobile communication terminal
  • System and method for improving sound quality of multifunctional equipment of mobile communication terminal
  • System and method for improving sound quality of multifunctional equipment of mobile communication terminal

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Embodiment Construction

[0036] The speech signal has a smaller signal level than the ringing signal and the oscillation frequency signal, so it does not need to be amplified. There is also a frequency that coincides with the resonance frequency (for example, 180 Hz) in the voice signal or the ring signal.

[0037] Sometimes, the MFD is driven after the voice signal, ring signal and oscillation frequency signal are all amplified, and the voice signal and ring signal contained at the resonance frequency are not subjected to any special processing. Thus, an echo phenomenon occurs due to weak vibrations generated at the resonant frequency at the time of speech or ringing output.

[0038] According to one embodiment of the invention, signals to be amplified and signals not to be amplified are processed differently, and oscillation frequencies, for example below 200 Hz, are eliminated from speech signals and ringing signals. The method for improving the sound quality of an MFD according to the first embod...

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Abstract

A mobile terminal having an MFD comprises a signal processor that outputs an analog signal and a control signal; a filter module in communication with the signal processor to output a filtered signal and an unfiltered signal; and a switch in communication with the filter module and responsive to the control signal to output the filtered signal to the MFD when the control signal is at a first level, and to output the unfiltered signal when the control signal is at a second level.

Description

technical field [0001] The present invention relates to a mobile communication terminal having an MFD (Multi Function Device), and more particularly, to an apparatus and method for improving the sound quality of the MFD. Background technique [0002] Generally, a mobile communication terminal is a portable device capable of wirelessly transmitting information such as sound, characters, or images. For portability, terminal manufacturers are striving to make terminals smaller and lighter. Multiple functionally integrated components help reduce the size or number of components. A multi-function device (MFD) is a typical integrated component of an existing mobile communication terminal. [0003] The MFD device can vibrate, play tunes, and perform other various functions of a mobile communication terminal by integrating functions of a receiver, a speaker, a buzzer, and a vibration motor. The MFD includes a vibrating piece for voice and a vibrating piece for vibration. When an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K9/122H04B1/16H04B1/40H04M1/00H04M1/60H04R1/00H04R3/00
CPCH04M1/6016H04R3/04H04B1/40
Inventor 朴祐奭
Owner LG ELECTRONICS INC
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