Log-spectral distance

Log-spectral distance对数频谱距离

log-spectral distance(LSD),也指 log-spectral distortion,是两个频谱之间的距离度量(用分贝表示)。两个频谱Pleft(omega
ight)hat{P}left(omega
ight)之间的对数频谱距离被定义为:

D_{LS}=sqrt{frac{1}{2pi} int_{-pi}^pi left[ 10log_{10} frac{P(omega)}{hat{P}(omega)} 
ight]^2 \,domega },

其中,Pleft(omega
ight)hat{P}left(omega
ight)是能量谱(power spectra)。

对数频谱距离时对称的。

原文地址:https://www.cnblogs.com/rong86/p/3643590.html