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    • 1. 发明授权
    • 광대역 음성 신호의 부호화/복호화 방법
    • 用于编码和解码宽带语音信号的方法
    • KR100788706B1
    • 2007-12-26
    • KR1020060118546
    • 2006-11-28
    • 삼성전자주식회사충북대학교 산학협력단
    • 이인성김종학정규혁서상원
    • G10L19/04G10L19/12
    • G10L19/09
    • A method for encoding and decoding a broadband voice signal is provided to improve an existing sinusoidal model algorithm and support SNR(Signal to Noise Ratio) scalability while encoding the broadband voice signal with high performance by reducing a quantization error. A method for encoding and decoding a broadband voice signal comprises the following steps of: extracting a linear prediction coefficient from the broadband voice signal; outputting a linear prediction residual signal where an envelope is removed from the voice signal by using the linear prediction coefficient; pitch-searching the spectrum of the linear prediction residual signal; extracting the size and phase of the spectrum of the linear prediction residual signal corresponding to a damping factor by adding the damping factor to a matching pursuit algorithm; calculating a first spectrum size and a first phase out of the extracted spectrum size and phase when the power value of the linear prediction residual signal is smallest; quantizing the first spectrum size and the first phase; and decoding the broadband voice signal.
    • 提供一种用于对宽带语音信号进行编码和解码的方法,以改善现有的正弦模型算法并支持SNR(信噪比)可扩展性,同时通过减少量化误差来对具有高性能的宽带语音信号进行编码。 一种用于对宽带语音信号进行编码和解码的方法包括以下步骤:从宽带语音信号中提取线性预测系数; 通过使用线性预测系数输出从语音信号去除包络的线性预测残差信号; 对线性预测残差信号的频谱进行音调搜索; 通过将阻尼因子加到匹配追踪算法中,提取对应于阻尼因子的线性预测残差信号的频谱的大小和相位; 当线性预测残差信号的功率值最小时,从所提取的频谱尺寸和相位中计算第一频谱大小和第一相位; 量化第一光谱尺寸和第一相位; 并解码宽带语音信号。
    • 5. 发明公开
    • 음성 분리 장치 및 이를 이용한 단일 채널 음성 분리 방법
    • 用于分离语音的装置和用于分离单通道语音的方法
    • KR1020110127783A
    • 2011-11-28
    • KR1020100047209
    • 2010-05-20
    • 충북대학교 산학협력단
    • 권오욱이윤경이인성
    • G10L21/0272G10L21/028
    • PURPOSE: A voice separation apparatus and single channel voice separation method using the same are provided to improve the accuracy of a voice separation by considering the size of voice signal and phase information. CONSTITUTION: A voice signal division unit(110) separates phase information and size information from the mixed voice signal of a microphone. A size information probability unit(130) defines a soft mask filter. The size information probability unit calculates the DFT(Discrete Fourier Transform)] of the divided voice signal. A phase information probability unit(140) calculates a phase information probability. A voice signal extraction unit(150) estimates the desired voice signal.
    • 目的:提供一种使用该语音分离装置和单声道语音分离方法,通过考虑语音信号和相位信息的大小来提高语音分离的精度。 构成:语音信号分割单元(110)从麦克风的混合语音信号分离相位信息和大小信息。 尺寸信息概率单元(130)定义了软掩模滤波器。 大小信息概率单位计算分割语音信号的DFT(离散傅立叶变换)]。 相位信息概率单元(140)计算相位信息概率。 语音信号提取单元(150)估计所需的语音信号。
    • 6. 发明公开
    • 생체신호 모니터링 시스템의 운영방법
    • 生物信号监测系统的方法
    • KR1020100070064A
    • 2010-06-25
    • KR1020080128656
    • 2008-12-17
    • 충북대학교 산학협력단
    • 이인성김영준정인교정규혁
    • A61B5/02A61B5/0404A61B5/04
    • PURPOSE: A method for operating a bio signal monitoring system is provided to improve the convenience of a user by adopting a wireless sensor network using Zigbee. CONSTITUTION: A user wireless terminal and an ECG(Electrocardiography) console register their own information in a SIP(Session Initiation Protocol) register server through an internet network, WLAN, or WiBro. Biosensors transmit a bio-signal to the user wireless terminal through Zigbee. The user wireless terminal outputs the bio signal received from the bio sensors as serial data. An SIP register server generates a media session for receiving a voice signal and the bio-signal of the user wireless terminal.
    • 目的:提供一种操作生物信号监测系统的方法,通过采用ZigBee的无线传感器网络来提高用户的便利性。 构成:用户无线终端和ECG(心电图)控制台通过互联网,WLAN或WiBro在SIP(会话发起协议)注册服务器中注册自己的信息。 生物传感器通过Zigbee向用户无线终端发送生物信号。 用户无线终端输出从生物传感器接收的生物信号作为串行数据。 SIP注册服务器生成用于接收语音信号和用户无线终端的生物信号的媒体会话。
    • 7. 发明公开
    • 생체신호관리시스템에서의 심전도 데이터 압축 및 압축 해제 방법
    • 生物信号监测系统心电图压缩和分解方法
    • KR1020100067363A
    • 2010-06-21
    • KR1020080125898
    • 2008-12-11
    • 충북대학교 산학협력단
    • 이인성정규혁김영준
    • A61B5/0452
    • PURPOSE: A method for ECG compression and decompression in bio-signals monitoring system are provided to effectively use a bandwidth in a wireless network by making it possible to compress and transmit electrocardiogram data without a distortion in the characteristics. CONSTITUTION: A wavelet coefficient is extracted through a wavelet lifting conversion of electrocardiogram data. Tri vectors are formed by using a hierarchical relation of the wavelet coefficient. The tri vectors comprise the number of the wavelets of an upper band and also the number of the wavelets of a lower band. The wavelet tri vectors are vector-quantized. A wavelet tri vector, which is a subject of vector-quantization, is stored in the higher index of a code book. The electrocardiogram data is restored through a wavelet reverse conversion of a restored tri vector. A final electrocardiogram signal is restored by combining a vector-quantization error and a code book wavelet tri vector.
    • 目的:提供一种用于生物信号监测系统中的ECG压缩和解压缩的方法,以有效地使用无线网络中的带宽,使得可以压缩和传输心电图数据,而不会在特征中失真。 构成:通过心电图数据的小波提升转换提取小波系数。 通过使用小波系数的分层关系形成三向矢量。 三向量包括上频带的小波数以及下频带的小波数。 小波三向量被矢量量化。 作为矢量量化的主题的小波三维矢量存储在码本的较高索引中。 心电图数据通过恢复的三维矢量的小波逆变换恢复。 通过组合矢量量化误差和码本小波三矢量来恢复最终的心电图信号。
    • 9. 发明授权
    • LMS 예측기를 이용한 패킷 손실 은닉 방법 및 이를 기록한 기록매체
    • 使用LMS预测器及其记录介质的丢包隐藏方法
    • KR101452635B1
    • 2014-10-22
    • KR1020130063514
    • 2013-06-03
    • 충북대학교 산학협력단
    • 이인성이상길
    • G10L21/003G10L21/02G10L19/08
    • G10L21/003G10L19/0017G10L19/08G10L21/02G10L2025/906G10L2025/932
    • The present invention relates to a method for packet loss concealment (PLC) or frame erasure concealment (FEC) in a voice codec. According to the present invention, the method for packet loss concealment comprises the following steps: a step of predicting the gain of the current frame using an inputted voice signal when the voice signal is inputted after a bit stream is decoded at a decoder; a step of checking if there is packet loss in the current frame from the inputted voice signal; a step of outputting the inputted voice signal as if there is no packet loss in the current frame; a step of extracting the pitch of the previous frame if there is packet loss in the current frame; a step of restoring the frame having packet loss using the extracted pitch; a step of applying the gain to a restored frame signal; and a step of outputting a voice signal where the gain is applied to the restored frame signal. According to the present invention, the method for packet loss concealment, which predicts the gain of a lost packet using an LMS predictor, compensates for the degradation of sound quality caused by the gain reduction due to the consecutive loss in the conventional method for packet loss concealment, thereby improving the issue of sound quality degradation due to packet loss in a VoIP or a VoLTE environment.
    • 本发明涉及语音编解码器中的分组丢失隐藏(PLC)或帧擦除隐藏(FEC)的方法。 根据本发明,用于分组丢失隐藏的方法包括以下步骤:当在解码器解码比特流之后输入语音信号时,使用输入的语音信号来预测当前帧的增益的步骤; 从输入的语音信号检查当前帧中是否存在分组丢失的步骤; 输出输入的语音信号的步骤,如同当前帧中没有分组丢失一样; 如果当前帧中存在分组丢失,则提取前一帧的音调的步骤; 使用提取的音调恢复具有分组丢失的帧的步骤; 将增益应用于恢复的帧信号的步骤; 以及将增益应用于恢复的帧信号的语音信号输出的步骤。 根据本发明,使用LMS预测器预测丢失分组的增益的分组丢失隐藏方法补偿由于传统的丢包方法的连续丢失而导致的增益降低引起的声音质量下降 隐藏,从而改善了VoIP或VoLTE环境中由于分组丢失引起的音质劣化的问题。