User terminal device and control method therefor

    公开(公告)号:US11259304B2

    公开(公告)日:2022-02-22

    申请号:US16783637

    申请日:2020-02-06

    摘要: Disclosed are a user terminal device and a control method therefor. The control method for a user terminal device comprises the steps of: determining state information of a satellite device connected with a user terminal device when a call request message is received from another terminal device; determining communication configuration information with the another terminal device on the basis of the state information of the satellite device, and transmitting a call response message including the communication configuration information to the another terminal device; and receiving audio data from the another terminal device according to a communication scheme corresponding to the communication configuration information. Therefore, in comparison with the prior art, the present invention can reduce a call negotiation time between user terminal devices, and thus reduce a call cost.

    Method and apparatus for improving call quality in noise environment

    公开(公告)号:US10957340B2

    公开(公告)日:2021-03-23

    申请号:US16492911

    申请日:2017-03-10

    摘要: A voice signal processing method according to an embodiment of the present disclosure for overcoming the problem includes: acquiring a real-time near-end noise signal; acquiring a far-end voice signal according to an incoming call; measuring subjective speech quality and perceptual-objective speech quality of test signals generated based on a reference signal and the real-time near-end noise signal; selecting at least one speech quality enhancement method based on the subjective speech quality and the perceptual-objective speech quality, and determining parameters that are to be applied to the selected at least one speech quality enhancement method; and enhancing speech quality of the far-end voice signal by using the selected at least one speech quality enhancement method, based on the determined parameters, wherein the test signals are generated by mixing the acquired real-time near-end noise signal with the reference signal whose speech quality is enhanced by applying a combination of parameter values to speech quality enhancement methods.

    Signal encoding method and device and signal decoding method and device

    公开(公告)号:US10388293B2

    公开(公告)日:2019-08-20

    申请号:US15022406

    申请日:2014-09-16

    发明人: Ho-sang Sung

    摘要: A spectrum encoding method includes selecting an important spectral component in band units for a normalized spectrum and encoding information of the selected important spectral component for a band, based on a number, a position, a magnitude and a sign thereof. A spectrum decoding method includes obtaining from a bitstream, information about an important spectral component for a band of an encoded spectrum and decoding the obtained information of the important spectral component, based on a number, a position, a magnitude and a sign of the important spectral component.