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

EP2786377A2 ENHANCED CHROMA EXTRACTION FROM AN AUDIO CODEC 有权
标题翻译： CHROMA的提取音频编解码器
公开(公告)号：EP2786377A2
公开(公告)日：2014-10-08
申请号：EP12824762.4
申请日：2012-11-28
申请人： Dolby International AB
发明人： BISWAS, Arijit , FINK, Marco , SCHUG, Michael
IPC分类号： G10L25/48 , G10L19/16 , G10L19/022 , G06F17/30
CPC分类号： G10L19/02 , G10H1/0008 , G10H1/383 , G10H2210/066 , G10H2250/225 , G10L19/022 , G10L19/038 , G10L21/0388 , G10L25/54
摘要： The present document relates to methods and systems for music information retrieval (MIR). In particular, the present document relates to methods and systems for extracting a chroma vector from an audio signal. A method (900) for determining a chroma vector (100) for a block of samples of an audio signal (301) is described. The method (900) comprises receiving (901) a corresponding block of frequency coefficients derived from the block of samples of the audio signal (301) from a core encoder (412) of a spectral band replication based audio encoder (410) adapted to generate an encoded bitstream (305) of the audio signal (301) from the block of frequency coefficients; and determining (904) the chroma vector (100) for the block of samples of the audio signal (301) based on the received block of frequency coefficients.

2. 发明授权

EP2786377B1 CHROMA EXTRACTION FROM AN AUDIO CODEC 有权
标题翻译： CHROMA-EXTRAKTION AUS EINEM AUDIOCODEC
公开(公告)号：EP2786377B1
公开(公告)日：2016-03-02
申请号：EP12824762.4
申请日：2012-11-28
申请人： Dolby International AB
发明人： BISWAS, Arijit , FINK, Marco , SCHUG, Michael
IPC分类号： G10L25/54 , G10L21/0388 , G10L19/022
CPC分类号： G10L19/02 , G10H1/0008 , G10H1/383 , G10H2210/066 , G10H2250/225 , G10L19/022 , G10L19/038 , G10L21/0388 , G10L25/54
摘要： The present document relates to methods and systems for music information retrieval (MIR). In particular, the present document relates to methods and systems for extracting a chroma vector from an audio signal. A method (900) for determining a chroma vector (100) for a block of samples of an audio signal (301) is described. The method (900) comprises receiving (901) a corresponding block of frequency coefficients derived from the block of samples of the audio signal (301) from a core encoder (412) of a spectral band replication based audio encoder (410) adapted to generate an encoded bitstream (305) of the audio signal (301) from the block of frequency coefficients; and determining (904) the chroma vector (100) for the block of samples of the audio signal (301) based on the received block of frequency coefficients.
摘要翻译：本文件涉及用于音乐信息检索（MIR）的方法和系统。特别地，本文件涉及从音频信号中提取色度矢量的方法和系统。描述了一种用于确定音频信号（301）的采样块的色度矢量（100）的方法（900）。方法（900）包括从适于生成的基于频谱带复制的音频编码器（410）的核心编码器（412）接收（901）从音频信号（301）的样本块导出的相应的频率系数块（901）根据频率系数块的音频信号（301）的编码比特流（305）; 以及基于所接收的频率系数块来确定用于所述音频信号（301）的采样块的色度矢量（904）（904）。

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