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1. 发明申请

US20080082324A1 METHOD AND APPARATUS FOR RATE REDUCTION OF CODED VOICE TRAFFIC 有权
标题翻译：降低编码语音流量的方法和装置
公开(公告)号：US20080082324A1
公开(公告)日：2008-04-03
申请号：US11536261
申请日：2006-09-28
申请人： Lakhdar Bourokba , Peter H.S. Yue
发明人： Lakhdar Bourokba , Peter H.S. Yue
IPC分类号： G10L19/12
CPC分类号： G10L19/24
摘要： A conversion entity and method for converting higher-rate speech parameters into lower-rate parameters including dimmed excitation parameters. The conversion entity comprises a first decoder configured to produce a target excitation from the higher-rate parameters, based on a first fixed contribution and a first adaptive contribution. The conversion entity also comprises a second decoder configured to produce a second adaptive contribution, and configured to selectably operate in a first or a second mode. In the first mode, the second adaptive component is generated based on the first fixed contribution for a previous frame, while in the second mode, the second adaptive component is generated based on a second fixed contribution for the previous frame. The second decoder operates in the second mode in response to a rate reduction request. A processing module determines the dimmed excitation parameters for generation of the second fixed contribution for the current frame, based on the target excitation and the second adaptive contribution.
摘要翻译：一种转换实体和方法，用于将较高速率的语音参数转换为较低速率的参数，包括调光激励参数。转换实体包括第一解码器，其被配置为基于第一固定贡献和第一自适应贡献从较高速率参数产生目标激励。转换实体还包括被配置为产生第二自适应贡献的第二解码器，并且被配置为可选择地以第一或第二模式操作。在第一模式中，基于前一帧的第一固定贡献产生第二自适应分量，而在第二模式中，基于前一帧的第二固定贡献产生第二自适应分量。响应于速率降低请求，第二解码器以第二模式操作。处理模块基于目标激励和第二自适应贡献来确定用于产生当前帧的第二固定贡献的调光激励参数。

2. 发明授权

US07725311B2 Method and apparatus for rate reduction of coded voice traffic 有权
标题翻译：编码语音流量降低速率的方法和装置
公开(公告)号：US07725311B2
公开(公告)日：2010-05-25
申请号：US11536261
申请日：2006-09-28
申请人： Lakhdar Bourokba , Peter Yue
发明人： Lakhdar Bourokba , Peter Yue
IPC分类号： G10L21/00
CPC分类号： G10L19/24
摘要： A conversion entity and method for converting higher-rate speech parameters into lower-rate parameters including dimmed excitation parameters. The conversion entity comprises a first decoder configured to produce a target excitation from the higher-rate parameters, based on a first fixed contribution and a first adaptive contribution. The conversion entity also comprises a second decoder configured to produce a second adaptive contribution, and configured to selectably operate in a first or a second mode. In the first mode, the second adaptive component is generated based on the first fixed contribution for a previous frame, while in the second mode, the second adaptive component is generated based on a second fixed contribution for the previous frame. The second decoder operates in the second mode in response to a rate reduction request. A processing module determines the dimmed excitation parameters for generation of the second fixed contribution for the current frame, based on the target excitation and the second adaptive contribution.
摘要翻译：一种转换实体和方法，用于将较高速率的语音参数转换为较低速率的参数，包括调光激励参数。转换实体包括第一解码器，其被配置为基于第一固定贡献和第一自适应贡献从较高速率参数产生目标激励。转换实体还包括被配置为产生第二自适应贡献的第二解码器，并且被配置为可选择地以第一或第二模式操作。在第一模式中，基于前一帧的第一固定贡献产生第二自适应分量，而在第二模式中，基于前一帧的第二固定贡献产生第二自适应分量。响应于速率降低请求，第二解码器以第二模式操作。处理模块基于目标激励和第二自适应贡献来确定用于产生当前帧的第二固定贡献的调光激励参数。

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