首页>
外国专利>
Method and related device for simplifying psychoacoustic analysis with spectral flatness characteristic values
Method and related device for simplifying psychoacoustic analysis with spectral flatness characteristic values
展开▼
机译:利用频谱平坦度特征值简化心理声学分析的方法和相关设备
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention applies spectral flatness characteristic values to simplify psychoacoustic analysis of a sound signal. If the sound signal comprises a plurality of frames, the present invention calculates the energy of the sound signal in a frequency domain, calculates a plurality of spectral flatness, and decides to use a short-block or a long-block Modified Discrete Cosine Transform accordingly. If the sound signal comprises left and right channel signals, the present invention performs psychoacoustic analysis on the sound signal to count energy of the left and right channel signals in a frequency domain, counts spectral flatness of the left and right channel signals, and decides to use middle/side transform or left and right channel encoding to transform the left and right channel signals accordingly.
展开▼