以上来源于: WordNet
This paper introduces an objective way to evaluate the quality of digital voice by means of LPC logarithmic inverted spectrum-envelope offset and artificial composite voice signal;
介绍了一种利用LPC对数倒频谱包络偏离量和人工合成语音信号对数字语音质量进行客观评价的方法；
The method utilizes an AR model to approach the frequency response of the clutter spectrum "inverted" ideal band-pass filter, and then implements the design of optimal FIR filter.
该方法利用AR模型逼近杂波谱“倒置”理想带通滤波器的频率响应，实现了最优FIR滤波器的设计。
The information of liquid types can be obtained from calculating inverted frequency spectrum of differential signals, which can identify the water flooded layer.
通过求取其微差信号的倒频谱提取储集层流体类型信息，对水淹层进行识别。
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