专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明申请

US20060206316A1 Audio coding and decoding apparatuses and methods, and recording mediums storing the methods 审中-公开
标题翻译：音频编码和解码装置和方法以及存储方法的记录介质
公开(公告)号：US20060206316A1
公开(公告)日：2006-09-14
申请号：US11333342
申请日：2006-01-18
申请人： Hosang Sung , Rakesh Taori , Kangeun Lee
发明人： Hosang Sung , Rakesh Taori , Kangeun Lee
IPC分类号： G10L11/04
CPC分类号： G10L19/24 , G10L19/06 , G10L19/09 , G10L19/093
摘要： Audio coding and decoding apparatuses and methods that can optimize the quality of an audio signal including harmonics, and recording mediums storing the methods. An audio coding apparatus includes: a first harmonic coding module performing first harmonic coding on an input audio signal using a pitch lag of the input audio signal and producing a quantized linear prediction coding coefficient; a first detector detecting a first difference audio signal from a difference between an audio signal output from the first harmonic coding module and the input audio signal; a second harmonic coding module performing harmonic coding on the first difference audio signal using the quantized linear prediction coding coefficient and a previous harmonic coding result; a second detector detecting a second difference audio signal obtained from a difference between an audio signal output from the second harmonic coding module and the first difference audio signal; and a code excited linear prediction (CELP) module CELP coding the second difference audio signal using the quantized linear prediction coding coefficient obtained from the first harmonic coding module.
摘要翻译：可以优化包括谐波的音频信号的质量的音频编码和解码装置和方法，以及存储方法的记录介质。音频编码装置包括：第一谐波编码模块，使用输入音频信号的音调滞后对输入音频信号执行一次谐波编码，并产生量化的线性预测编码系数; 第一检测器，从第一谐波编码模块输出的音频信号与输入音频信号之间的差检测第一差分音频信号; 使用量化线性预测编码系数和先前的谐波编码结果对第一差分音频信号执行谐波编码的二次谐波编码模块; 第二检测器，检测从二次谐波编码模块输出的音频信号与第一差音频信号之间的差获得的第二差分音频信号; 以及使用从第一谐波编码模块获得的量化线性预测编码系数对第二差音频信号进行编码的码激励线性预测（CELP）模块CELP。

22. 发明申请

US20060149538A1 High-band speech coding apparatus and high-band speech decoding apparatus in wide-band speech coding/decoding system and high-band speech coding and decoding method performed by the apparatuses 失效
标题翻译：宽带语音编码装置和宽带语音编码/解码系统中的高频带语音解码装置以及由该装置执行的高频带语音编码和解码方法
公开(公告)号：US20060149538A1
公开(公告)日：2006-07-06
申请号：US11285183
申请日：2005-11-23
申请人： Kangeun Lee , Changyong Son , Insung Lee , Jaehyun Shin , Jonghun Kim , Kyuhyuk Jung , Youngwook Ahn
发明人： Kangeun Lee , Changyong Son , Insung Lee , Jaehyun Shin , Jonghun Kim , Kyuhyuk Jung , Youngwook Ahn
IPC分类号： G10L19/10
CPC分类号： G10L21/038 , G10L19/0204 , G10L19/12
摘要： A high-band speech encoding apparatus and a high-band speech decoding apparatus that can reproduce high quality sound even at a low bitrate when wideband speech encoding and decoding using a bandwidth extension function, and a high-band speech encoding and decoding method performed by the apparatuses. The high-band speech encoding apparatus includes: a first encoding unit encoding a high-band speech signal based on a structure in which a harmonic structure and a stochastic structure are combined, if the high-band speech signal has a harmonic component; and a second encoding unit encoding a high-band speech signal based on a stochastic structure if the high-band speech signal has no harmonic components. The high-band speech decoding apparatus includes: a first decoding unit decoding a high-band speech signal based on a combination of a harmonic structure and a stochastic structure using received first decoding information; a second decoding unit decoding the high-band speech signal based on a stochastic structure using received second decoding information; and a switch outputting one of the decoded high-band speech signals received from the first and second decoding units according to received mode selection information.
摘要翻译：一种高带语音编码装置和高频带语音解码装置，即使在使用带宽扩展功能进行宽带语音编码和解码时也能以低比特率再现高品质声音，以及高频带语音编码和解码方法，由设备。高频语音编码装置包括：如果高频带语音信号具有谐波分量，则基于组合了谐波结构和随机结构的结构对高频语音信号进行编码的第一编码单元; 以及第二编码单元，如果高频带语音信号没有谐波分量，则基于随机结构对高频带语音信号进行编码。高频带语音解码装置包括：第一解码单元，使用接收到的第一解码信息，基于谐波结构和随机结构的组合对高频带语音信号进行解码; 第二解码单元，使用接收到的第二解码信息，基于随机结构解码所述高频带语音信号; 以及根据接收到的模式选择信息，输出从第一和第二解码单元接收的解码的高频带语音信号之一的开关。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式