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3. 发明公开

KR1020130116505A 최소자승법을 사용한 멀티펄스 음성 부호화 시스템 无效
标题翻译： LMSMPC系统
公开(公告)号：KR1020130116505A
公开(公告)日：2013-10-24
申请号：KR1020120038910
申请日：2012-04-16
申请人： 상명대학교 천안산학협력단
发明人： 이시우
IPC分类号： G10L19/00
CPC分类号： G10L21/0232 , G10L19/008
摘要： PURPOSE: A multi-pulse speech coding system using a least square method is provided to correct a reproduced voice waveform using the least square method in case a voiced sound and an unvoiced sound exist in the same frame, thereby improving sound quality. CONSTITUTION: A silence, a voiced sound and an unvoiced sound (S/V/UV) are detected (206). A transition segment including unvoiced consonant (TSIUVC) is extracted from an individual pitch pulse and an error signal of a finite impulse response and simplified technique for recursive estimate autocorrelation K parameters (FIR-STREAK) filter (203) used for detecting the S/V/UV. The error signal is controlled by applying a least mean square (LMS) algorithm (209) to the TSIUVC. A maximum error signal is produced to control the error signal by applying the LMS algorithm to the TSIUVC. Distortion of a voice waveform is controlled by applying the maximum error signal.
摘要翻译：目的：提供一种使用最小二乘法的多脉冲语音编码系统，以便在同一帧中存在浊音和无声音的情况下，使用最小二乘法校正再现的语音波形，从而提高声音质量。构成：检测到静音，浊音和清音（S / V / UV）（206）。从单个音调脉冲和有限脉冲响应的误差信号和用于检测S / V的递归估计自相关K参数（FIR-STREAK）滤波器（203））的简化技术提取包括清音辅音（TSIUVC）的转换段 / UV。通过将最小均方（LMS）算法（209）应用于TSIUVC来控制误差信号。产生最大误差信号，通过将LMS算法应用于TSIUVC来控制误差信号。通过应用最大误差信号来控制语音波形的失真。

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