A new time-frequency representation for music signal analysis: Resonator time-frequency image
A new time-frequency representation for music signal analysis: Resonator time-frequency image
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用于音乐信号分析的新时频表示：谐振器时频图像
DOI：
10.1109/isspa.2007.4555594
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
M. Mattavelli
中科院分区：
文献类型：
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作者：
R. Zhou;M. Mattavelli
大多数音乐相关任务需要联合时频分析，因为音乐信号随时间变化。现有的时频分析方法在音乐信号处理中的应用存在一些严重的局限性。本文提出了一种原始的频率相关时频分析工具，称为谐振器时频图像（RTFI）。 RTFI 由一阶复数谐振器组实现，以便计算高效。不同的音乐分析任务可能有不同的时频分辨率要求。使用RTFI，只需设置不同的参数即可选择不同的时频分辨率，例如均匀分析、恒Q分析或类耳分析；并让 RTFI 在一个框架中概括所有这些分析。介绍了在音乐开始检测中使用 RTFI 的示例。
Most of music related tasks need a joint time-frequency analysis because a music signal varies with time. The existing time-frequency analysis approaches show some serious limitations for application in music signal processing. This paper presents an original frequency-dependent time-frequency analysis tool called the Resonator Time-Frequency Image (RTFI). The RTFI is implemented by a first-order complex resonator bank so as to be computation-efficient. Different music analysis tasks may have different time-frequency resolution requirements. Using the RTFI, one can select different time-frequency resolutions, such as uniform analysis, constant-Q analysis, or ear-like analysis by simply setting different parameters; and letting the RTFI generalize all these analyses in one framework. An example of using the RTFI in music onset detection is introduced.