This algorithm is based on the MVDR spectrum estimation method. It estimates MVDR spectrum at Mel frequency scale and filters the modulation spectrum of the MVDR spectrum, then the cepstral coefficients are extracted as the feature parameter.
提出了一种用于语音识别的鲁棒特征提取算法，这种算法基于MVDR谱估计技术，它在Mel频率尺度上估计MVDR谱，并对得到的MVDR谱进行调制谱滤波，然后提取其倒谱系数作为特征参数。
参考来源 - 噪声环境下的语音识别技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This is a single sideband modulation source, for the signal and the signal has been modulated spectrum.
说明：这是单边带调制源码，求消息信号和已调信号的频谱。
FQPSK is a modulation technique that fits for high spectrum efficiency and high power efficiency request.
FQPS K是针对高频谱效率和高功率效率要求产生的一种调制方式。
The characteristics of spectrum linewidth, FM modulation and variability of wavelength are presented.
并对频谱线宽、FM调制特性和波长可变特性作了介绍。
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