发明授权
US07647222B2 Apparatus and methods for encoding digital audio data with a reduced bit rate
有权
用于以降低的比特率对数字音频数据进行编码的装置和方法
- 专利标题： Apparatus and methods for encoding digital audio data with a reduced bit rate
- 专利标题（中）： 用于以降低的比特率对数字音频数据进行编码的装置和方法
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申请号： US11739562申请日： 2007-04-24
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公开(公告)号： US07647222B2公开(公告)日： 2010-01-12
- 发明人: Ivan Dimkovic , Gian Carlo Pascutto
- 申请人： Ivan Dimkovic , Gian Carlo Pascutto
- 申请人地址： DE Karlsbad
- 专利权人： Nero AG
- 当前专利权人： Nero AG
- 当前专利权人地址： DE Karlsbad
- 代理机构： Glenn Patent Group
- 代理商 Michael A. Glenn
- 主分类号： G10L19/00
- IPC分类号： G10L19/00
摘要：
A method and an apparatus for encoding digital audio data with reduced bit rates, the apparatus having a provider of psycho-acoustically quantized digital audio data with a bit rate being higher than the reduced bit rate. The apparatus further has an identifier for identifying a frequency band according to a selection criterion, the selection criterion being such that an impact on the quality of the digital audio data when the data in the identified frequency band is replaced by generated noise is smaller than the impact on the quality of the digital audio data, which would arise when the data in a different frequency band is replaced by generated noise. The apparatus further has a replacer for replacing data in the identified frequency band of the digital audio data by a noise synthesis parameter.
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