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. 发明授权

EP2023339B1 A low-delay audio coder 有权转让
标题翻译：音频解码低延迟
公开(公告)号：EP2023339B1
公开(公告)日：2010-08-25
申请号：EP07113397.9
申请日：2007-07-30
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： Kleijn, Willem Bastiaan , Minyue, Li
IPC分类号： G10L19/00
CPC分类号： G10L19/0017 , H04R25/552 , H04R2225/55
摘要： The present invention relates to methods and devices for encoding and decoding digital audio signals, e.g. a speech signal. An audio coder and a decoder are provided wherein a modeller adds a first distribution model obtained from model parameters of past segments of the digital audio signal and a fixed distribution model, each of the models being multiplied by a weighting coefficient, for obtaining a combined distribution model. The weighting coefficients are selected to minimize a code length of a current segment of the digital audio signal. As the combined distribution model is a sum of several distribution models, wherein at least some of the models is based on the model parameters, flexibility is introduced in the signal model used to encode the digital audio signal. Thus, an audio coder and decoder providing a low bit rate in average, low bit rate variations and low error propagation are provided.

2. 发明公开

EP2023339A1 A low-delay audio coder 有权转让
标题翻译： Audiodekoder mit geringerVerzögerung
公开(公告)号：EP2023339A1
公开(公告)日：2009-02-11
申请号：EP07113397.9
申请日：2007-07-30
申请人： Global IP Solutions (GIPS) AB , Global IP Solutions, Inc.
发明人： Kleijn, Willem Bastiaan , Minyue, Li
IPC分类号： G10L19/00
CPC分类号： G10L19/0017 , H04R25/552 , H04R2225/55
摘要： The present invention relates to methods and devices for encoding and decoding digital audio signals, e.g. a speech signal. An audio coder and a decoder are provided wherein a modeller adds a first distribution model obtained from model parameters of past segments of the digital audio signal and a fixed distribution model, each of the models being multiplied by a weighting coefficient, for obtaining a combined distribution model. The weighting coefficients are selected to minimize a code length of a current segment of the digital audio signal. As the combined distribution model is a sum of several distribution models, wherein at least some of the models is based on the model parameters, flexibility is introduced in the signal model used to encode the digital audio signal. Thus, an audio coder and decoder providing a low bit rate in average, low bit rate variations and low error propagation are provided.
摘要翻译：本发明涉及用于编码和解码数字音频信号的方法和设备，例如，一个语音信号。提供一种音频编码器和解码器，其中，建模器添加从数字音频信号的过去段的模型参数和固定分布模型获得的第一分布模型，每个模型乘以加权系数，以获得组合分布模型。选择加权系数以最小化数字音频信号的当前段的代码长度。由于组合分布模型是几个分布模型的总和，其中至少一些模型基于模型参数，在用于对数字音频信号进行编码的信号模型中引入了灵活性。因此，提供了平均提供低比特率，低比特率变化和低错误传播的音频编码器和解码器。

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