MFCC can express speech spectrum more accurately at low frequency, so MFCC is a good method to express the spectral envelope in voice conversion;

MFCC可以更加准确地表示语音低频处的频谱包络，在语音转换中是一种很好的频谱包络表示方法；

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This paper presents a channel adaptation method named spectral adjusting (SA) normalizes the distorted speech spectrum with a piecewise linear normalization function.

该文提出了一种新的信道自适应方法——频谱调整法。

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This paper studies the speech enhancement technology, and proposes an improved spectral subtraction method based on the auditory characteristics and the speech spectrum characteristics.

主要以谱减法为基础，结合人耳的听觉特性从而减少残留“音乐噪声”的影响；结合语音的语谱在时-频域分布特性从而提高增强后语音的听觉质量。

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Even if Obama's State Department seems fully enamored with a "test of consequences" on speech critical of Islam, most Americans across the political spectrum will realize that this perverts the traditional understanding of the First Amendment.

CENTERFORSECURITYPOLICY: Center For Security Policy