There are two main transform domain methods, one is to use the discrete cosine transformation (DCT); the other would be the use of discrete wavelet transforms (DWT).
目前主要有两种变换域方法，一种是使用离散余弦变换(DCT)，另一种是使用离散小波变换(DWT)。
It is pointed out that the time domain method is a special case of those two methods and it is more efficient than those methods based on wavelet transform in case of obtaining the same result.
指出时域法是这两种方法的一种特例，并且具有更高的效率及相同的结果。
Here, secondary treatment methods are introduced in detail, include time domain signal statistics character, frequency analysis fast Fourier transform (FFT), and short time Fourier transform (STFT).
这里，主要对二次处理的方法作了详细的介绍，包括时域信号的统计特征，频域分析的傅立叶变换和短时傅立叶变换。
Methods the noise on high frequency domain was obtained and magnified after the pathologic voice signal was decomposed on multiple levels by means of the wavelet transform.
方法应用小波变换对早期病理嗓音信号进行多重分解，提取和放大频谱的高端噪声。
The theories and the methods of VLSI implementation of one-dimension continuous wavelet transform(CWT) . which bases on state-space log-domain filter, are developed in the paper.
本文研究基于对数域状态空间滤波器的一维连续小波变换VLSI实现理论与方法。
The theories and the methods of VLSI implementation of one-dimension continuous wavelet transform(CWT) . which bases on state-space log-domain filter, are developed in the paper.
本文研究基于对数域状态空间滤波器的一维连续小波变换VLSI实现理论与方法。
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