基本信息:
- 专利标题: Fidelity-optimized variable frame length encoding
- 专利标题(中):优质优化的框架长度编码
- 申请号:JP2007216374 申请日:2007-08-22
- 公开(公告)号:JP2008026914A 公开(公告)日:2008-02-07
- 发明人: BRUHN STEFAN , JOHANSSON INGEMAR , TALEB ANISSE , ENSTROEM DANIEL
- 申请人: Telefon Ab L M Ericsson , テレフオンアクチーボラゲット エル エム エリクソン(パブル)
- 专利权人: Telefon Ab L M Ericsson,テレフオンアクチーボラゲット エル エム エリクソン(パブル)
- 当前专利权人: Telefon Ab L M Ericsson,テレフオンアクチーボラゲット エル エム エリクソン(パブル)
- 优先权: SE0303501 2003-12-19; SE0400417 2004-02-20
- 主分类号: G10L19/008
- IPC分类号: G10L19/008 ; H03M7/30 ; H04H20060101
摘要:
PROBLEM TO BE SOLVED: To provide an encoding method improving acoustic feeling quality of a multi-channel audio signal.
SOLUTION: The method includes a step of generating a first output signal x'
mono to be an encoding parameter expressing a main signal x
mono and a step of generating a second output signal p
side to be an encoding parameter expressing a sub signal x
side , wherein the main signal x
mono is a first linear combination of at least signals 16A, 16B of first and second channels. The sub signal x
side is a second linear combination of at least the signals 16A, 16B of the first and second channels in the encoding frame. The step of generating the second output signal includes a step of scaling the sub signal x
side according to an isoenergetic curve of the main signal x
mono .
COPYRIGHT: (C)2008,JPO&INPIT
摘要(中):
SOLUTION: The method includes a step of generating a first output signal x'
mono to be an encoding parameter expressing a main signal x
mono and a step of generating a second output signal p
side to be an encoding parameter expressing a sub signal x
side , wherein the main signal x
mono is a first linear combination of at least signals 16A, 16B of first and second channels. The sub signal x
side is a second linear combination of at least the signals 16A, 16B of the first and second channels in the encoding frame. The step of generating the second output signal includes a step of scaling the sub signal x
side according to an isoenergetic curve of the main signal x
mono .
COPYRIGHT: (C)2008,JPO&INPIT
要解决的问题:提供一种提高多声道音频信号的声感质量的编码方法。 解决方案:该方法包括产生第一输出信号x'SB> mono SB>作为表示主信号x S SB>的编码参数的步骤,以及产生 第二输出信号p 侧 SB>成为表示子信号x SB侧的编码参数,其中主信号x SB SB>是第一线性组合 至少第一和第二通道的信号16A,16B。 子信号x SB侧是至少编码帧中第一和第二信道的信号16A,16B的第二线性组合。 产生第二输出信号的步骤包括根据主信号x SB>的等能线曲线对子信号x SB侧进行缩放的步骤。 版权所有(C)2008,JPO&INPIT
公开/授权文献:
- JP4589366B2 Fidelity optimization variable frame length coding 公开/授权日:2010-12-01
信息查询:
EspacenetIPC结构图谱:
G | 物理 |
--G10 | 乐器;声学 |
----G10L | 语言分析或合成;语言识别 |
------G10L19/00 | 用于冗余度下降情形的语音分析—合成技术;语音编码或解码 |
--------G10L19/008 | .多通道音频信号编码和解码,即采用通道间的相关性以减少冗余度,例如联合立体声,强度编码或矩阵变换 |