MFCC parameters is main describes the spectrumenvelope features, which is used to state the vacal track characterizatics, while ignoring the impact of pitch frequency.
MFCC参数主要描述了表征声道特性的谱包络特征，而忽略了基音频率对它的影响。
2
This effect of envelopespectrum analysis applied to fault diagnosis of equipment parts damage is verified by the example of rolling bearing fault diagnosis.
通过对滚动轴承故障诊断的实例分析，验证了包络谱分析运用于诊断设备零件损伤故障所取得的效果。
3
The envelope of sound spectrum is related to the transfer function of bore.