公开(公告)号：KR100467326B1

公开(公告)日：2005-01-24

申请号：KR1020020077996

申请日：2002-12-09

Applicant: 한국전자통신연구원 ,  학교법인연세대학교

Inventor： 성호상 ,  황대환 ,  윤대희 ,  강홍구 ,  박영철 ,  이기승 ,  정성교 ,  김경태

IPC: G10L19/002 ,  G10L19/02 ,  G10L19/04

CPC classification number: G10L19/24 ,  G10L21/038

Abstract: The present invention relates to a transmitter and a receiver for speech coding and decoding by using an additional bit allocation method. The transmitter and the receiver according to the present invention realize a voice communication service of high quality by using additional bits permitted in system requirements while using a conventional speech coder as it is. In addition, the transmitter and the receiver according to the present invention have an advantage in that they enable insertion of additional quantization blocks while not changing the structure of the conventional standard speech coder, since they allocate additional bits by applying a multi-stage quantization procedure not in a speech signal domain but in a parameter domain.

Abstract translation: 本发明涉及通过使用附加比特分配方法进行语音编码和解码的发射机和接收机。 根据本发明的发射机和接收机通过使用系统要求中允许的附加比特来实现高质量的语音通信服务，同时使用常规的语音编码器。 另外，根据本发明的发射机和接收机具有这样的优点，即它们能够插入额外的量化块，而不改变常规标准语音编码器的结构，因为它们通过应用多级量化过程来分配附加比特 不在语音信号域中，而是在参数域中。

公开(公告)号：KR1020040055073A

公开(公告)日：2004-06-26

申请号：KR1020020081663

申请日：2002-12-20

Applicant: 한국전자통신연구원 ,  학교법인연세대학교

Inventor： 성호상 ,  황대환 ,  윤대희 ,  강홍구 ,  박영철 ,  이기승 ,  정성교 ,  김경태

IPC: H04M1/00 ,  H04B1/50

CPC classification number: H04L12/66

Abstract: PURPOSE: An apparatus and a method for transmitting/receiving a wideband voice signal are provided to offer high sound quality 16 kHz sampled wideband voice signal and compatibility with an existing system. CONSTITUTION: A analyzing/filtering unit(301) receives a digital voice signal and outputs a low band voice signal having a bandwidth of 0-4 kHz of 8 kHz sampling period. A low band standard coding unit(302) receives the low band voice signal, codes it and outputs a coded low band standard signal. A low band additional coding unit(304) receives a difference between a filtered low band voice signal and a composite signal that has been decoded by a low band standard decoding unit(303) and codes them to generate a low band additional signal. An enhancement residual band coding unit(306) up-samples a composite signal obtained by combining signals outputted from the low band standard decoding unit(303) and the low band additional decoding unit(305), obtains a difference between the up-sampled signal and a voice signal inputted to the analyzing/filtering unit(301), and generates an enhancement residual band signal.

Abstract translation: 目的：提供用于发送/接收宽带语音信号的装置和方法，以提供高音质16kHz采样宽带语音信号和与现有系统的兼容性。 构成：分析/滤波单元（301）接收数字语音信号并输出​​具有8kHz采样周期的0-4kHz带宽的低频语音信号。 低频标准编码单元（302）接收低频语音信号，对其编码并输出编码的低频带标准信号。 低频带附加编码单元（304）接收滤波后的低频语音信号和由低频带标准解码单元（303）解码的复合信号之间的差，并对它们进行编码以产生低频带附加信号。 增强残差频带编码单元（306）对通过组合从低频带标准解码单元（303）和低频带附加解码单元（305）输出的信号获得的复合信号进行上采样，获得上采样信号 以及输入到分析/滤波单元（301）的语音信号，并产生增强剩余频带信号。