专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP1768107A4 AUDIO SIGNAL DECODING DEVICE AND AUDIO SIGNAL ENCODING DEVICE 有权转让
标题翻译：设备用于编码和解码音频信号
公开(公告)号：EP1768107A4
公开(公告)日：2009-10-21
申请号：EP05765247
申请日：2005-06-28
申请人： PANASONIC CORP
发明人： CHONG KOK SENG , TANAKA NAOYA , NEO SUA HONG , TSUSHIMA MINEO
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/24

2. 发明公开

EP1722359A4 ERROR CONCEAL DEVICE AND ERROR CONCEAL METHOD 失效转让
标题翻译： FEHLERVERBERGUNGSEINRICHTUNG UND FEHLERVERBERGUNGSVERFAHREN
公开(公告)号：EP1722359A4
公开(公告)日：2009-09-02
申请号：EP05719724
申请日：2005-03-01
申请人： PANASONIC CORP
发明人： GOTO MICHIYO , TEO CHUN WOEI , NEO SUA HONG , YOSHIDA KOJI
IPC分类号： G10L19/00 , G10L11/02 , H03M7/30 , H04L1/00
CPC分类号： H04L1/0061 , G10L19/005 , G10L25/78 , H04L1/0045
摘要： The conventional error conceal processing generates a greatly fluctuating irregular sound which is unpleasant to ears and causes a remarkable echo effect and click noise. A notification signal detection unit (301) judges processing for an input frame. In case of an error frame, a sound detection unit (303) makes judgment whether a preceding non-error data frame is a sound signal. If it is a sound frame, a sound copying unit (304) generates a replacing frame. If it is a non-sound frame, a transient signal detection unit (305) judges whether it is an attack signal by the transient signal detection and selects an appropriate area from the preceding non-error frame. A filter bank analysis unit (306) generates N sub-bands. Sub-band samples are extrapolated to these by an extrapolation unit (307) and they become replacing sub-band data for the current error frame. From the data, a filter bank synthesis unit (308) rebuilds the sub-band data.
摘要翻译：常规的错误隐藏处理产生大大波动的不规则声音，这对耳朵不舒服并且引起显着的回声效应和咔嗒声。通知信号检测单元（301）判断对输入帧的处理。在错误帧的情况下，声音检测单元（303）判断先前的非错误数据帧是否是声音信号。如果它是声音帧，则声音复制单元（304）产生替换帧。如果它是非声音帧，则瞬态信号检测单元（305）通过瞬态信号检测判断它是否是攻击信号，并从先前的非错误帧中选择适当的区域。滤波器组分析单元（306）生成N个子带。通过外插单元（307）将这些子带样本外推到这些子带样本，并且它们成为当前错误帧的替代子带数据。滤波器组合成单元（308）从数据中重建子带数据。

3. 发明公开

EP1912206A4 STEREO ENCODING DEVICE, STEREO DECODING DEVICE, AND STEREO ENCODING METHOD 失效转让
标题翻译：立体声编码设备，立体声编码设备和码流编码方法
公开(公告)号：EP1912206A4
公开(公告)日：2011-03-23
申请号：EP06797077
申请日：2006-08-30
申请人： PANASONIC CORP
发明人： TEO CHUN WOEI , NEO SUA HONG , YOSHIDA KOJI , GOTO MICHIYO
IPC分类号： G10L19/00 , G10L19/008 , G10L19/24
CPC分类号： G10L19/24 , G10L19/008
摘要： There is disclosed a stereo encoding device capable of accurately encoding a stereo signal at a low bit rate and suppressing delay in audio communication. The device performs monaural encoding in its first layer (110). In a second layer (120), a filtering unit (103) generates an LPC (Linear Predictive Coding) coefficient and generates a left channel drive sound source signal. A time region evaluation unit (104) and a frequency region evaluation unit (105) perform signal evaluation and prediction in both of their regions. A residual encoding unit (106) encodes a residual signal. A bit distribution control unit (107) adaptively distributes bits to the time region evaluation unit (104), the frequency region evaluation unit (105), and the residual encoding unit (106) according to a condition of the audio signal.

4. 发明公开

EP1847988A4 PULSE ALLOCATING METHOD IN VOICE CODING 有权
标题翻译：脉冲分配方法票编码
公开(公告)号：EP1847988A4
公开(公告)日：2010-12-29
申请号：EP06713401
申请日：2006-02-09
申请人： PANASONIC CORP
发明人： TEO CHUN WOEI , NEO SUA HONG , YOSHIDA KOJI , GOTO MICHIYO
IPC分类号： G10L19/10 , G10L19/00
CPC分类号： G10L19/10 , G10L19/008

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