实验证明，基于3维小波变换的3维SPIHT编码算法在对超光谱图像压缩时，表现出了优良的率失真性能。 并且算法复杂度适中，具有嵌入式特性。
The test results show that the 3D SPIHT algorithm based on 3D DWT for hyperspectral images compression is very efficient, the algorithm is embedded and has modest complexity.
这种算法是采用了均值量化的方法，把数字水印嵌入图像的离散小波域，可以检测在空间域和频率域的图像失真。
The watermark was embedded in the wavelet domain using the mean quantization method. This method can be used to detect the distortion both in spatial and frequency domain.
实验结果显示对于上面所提及的两个天线，只有些微的脉冲波失真，其保真度之值介于0。8至0。96之间。
The experimental results show slight pulse distortion, with goof fidelity values of 0. 8 to 0. 96 for the two proposed antennas.
理论分析和仿真结果表明，新算法具有较强的鲁棒性，其抗噪声及抗协波失真性能明显高于现有周期算法，且计算简单，精度令人满意。
Simulation results and theoretical analysis show that the new period calculation method in this paper is robust? computationally simple and its accuracy of estimation is satisfactory.
本仪器采用CMOS斩波稳零运算放大器为关键性元件，获得对信号无失真采集。
The CMOS amplifier of chopped wave stable zero calculator has been used as a key element to acquire signal of location.
用射频频谱分析仪观测一个已调波的频谱成分，记录上边带或下边带中各条谱线的幅度值，从而可以根据有关算式计算出调制信号（音频信号）的失真度。
Spectrum of the amplitude-modulated wave is observed by a radio frequency spectrum analyzer and amplitude values of every spectrum are recorded at the upper sideband or lower sideband.
这交越失真看起来像一个档次，或扁平点，在正弦波作为穿越零轴。
This crossover distortion looks like a notch, or flat spot, in the sine wave as it crosses the zero axis.
该方法基于率失真曲线的精确理论模型，对小波分解后的不同子带提供最优的动态比特分配从而实现了小波系数的自适应量化编码，最后还实现了码率控制。
It provides optimal dynamic bit allocation for sub-bands of DWT and realizes adaptive quantization for wavelet coefficients. At last, it provides exact rate control for the coder.
正弦波输出，失真小，稳定性好，频率范围覆盖整个音频范围。
Sine wave output, low distortion and high stability, frequency range over with whole audio range.
实验结果证明，系统电动机电流的谐波失真较小，直流母线电压利用率比常规的正弦波脉宽调制（SPWM）有了较大的提高，功率器件的开关损耗较小。
Test results proved that the motor had lower current harmonic, more efficient use of DC supply voltage than SPWM, less switch loss of power switch.
利用傅里叶有限差分算子可保证在复杂构造的波场延拓中，地震波场不失真，成像质量高。此外，本文对傅里叶有限差分算子作了必要的优化。
Fourier finite difference operator can be adopted to ensure good fidelity of seismic wave field in wave field continuation of complicated geology structure, bringing high quality image.
还提出了采用单自由度线性无阻尼自由振荡系统作为测定传感器谐波失真度的一个高纯度正弦波激振源。
It is also recommended in this paper that a linear nondamping free vibration system of a single freedom degree can provide a stimulant source of sine wave with high purti…
还提出了采用单自由度线性无阻尼自由振荡系统作为测定传感器谐波失真度的一个高纯度正弦波激振源。
It is also recommended in this paper that a linear nondamping free vibration system of a single freedom degree can provide a stimulant source of sine wave with high purti…
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