混叠 英语是什么意思 - 英语翻译

• aliasing

在 中文 中使用 混叠 的示例及其翻译为 英语

也可能出现混叠彩色多普勒成像。
Aliasing may occur also in color Doppler imaging.

否则，被称为“混叠”（Aliasing）的失真就会损坏声音。
Otherwise, distortion called“aliasing” can mar the sound.

采样率低于信号频率的两倍，因此信号会出现混叠。
The sample rate is below twice the signal frequency and the signal is aliased.

为避免混叠，必须满足以下条件：１／Ｔ≥２α或１／Ｔ≥２ＢＷ。
To avoid aliasing, you must preserve the following condition: 1/T≥ 2α, or 1/T≥ 2BW.

为帮助理解数据采样系统和混叠，我们以传统的电影摄影为例。
To help understand a sampled data system and aliasing, we look at a classic cinematography example.

如果从输入信号触发数字化仪，则混叠信号也会显得不稳定。
If the digitizer is triggered from the input signal then an aliased signal will also appear unstable.

另一方面，处于该范围之外，即超过1/2fs的信号将会混叠。
On the other hand, signals that exist outside of that, beyond 1/2 fs, are going to be aliased.

但有时候，特意设计利用欠采样，混叠使得AD系统作为混频器工作。
But sometimes, the undersampling is deliberate and the aliasing causes the AD system to function as a mixer.

为防止混叠，必须对所有有害信号进行足够的衰减，使得ADC不对其进行数字化。
To prevent aliasing, you must adequately filter all undesired signals so the ADC does not digitize them.

如果相互交叠(这种现象称为混叠)，就不可能再从采样信号中恢复出原始信号。
If they do(a phenomenon called aliasing), we can no longer extract the original signal from the samples.

注意，一旦采样率降到2Gsamples/s或以下，示波器将产生1GHz的混叠信号。
Note that once the sample rate falls to 2 Gsamples/s or lower, the oscilloscope will alias signals at 1 GHz.

混叠意味着，信号本身将下降并被伪装成位于0至1/2fs范围之内的信号。
And aliasing means that the signal itself is going to fold down and masquerade it as a signal in the 0 to 1/2 fs range.

这两种方向都可以看做是正确的方向，取决于您如何“看”车轮，但我们知道已经发生了信号混叠。
Both can be viewed as the correct direction, depending on how you'see' the wheel, but we now have an aliased signal.

如果使用较低的采样频率，则可以在SCF之前使用简单的抗混叠滤波器来防止混叠。
If a lower sampling frequency is used, then a simple anti-aliasing filter can be used ahead of the SCF to prevent aliasing.

如果你不遵循一段音频至少取样两个样本的规则，那么可能会捕捉到无用的混叠频率。
If you do not follow the rule of taking at least two samples per period of audio, unwanted alias frequencies may be captured.

图7给出了得到的频谱，主尖峰落在58.48MHz频点，这就是混叠信号。
The resulting spectrum given in Figure 7 shows that the main spike is now located at 58.48MHz, and this is the aliased signal.

首先，这意味着文本将很难阅读，其次，在直线上会有很大程度的混叠。
This means, first, that text will be difficult to read and, secondly, that there will be a high level of aliasing on straight lines.

降低采样率会增加数据混叠（aliasing）的可能性，尤其是在捕获富含谐波的信号时。
Reducing the sampling rate increases the possibility of aliasing the data, especially when capturing harmonic-rich signals.

这意味着，首先，这个文本将难以阅读，其次，直线会出现高水平的混叠。
This means, first, that text will be difficult to read and, secondly, that there will be a high level of aliasing on straight lines.

高于奈奎斯特频率的任何频率内容都将导致混叠，这通常会使FFT无法精确计算。
Any frequency content higher than Nyquist will result in aliasing, which, generally speaking, makes it impossible to compute an accurate FFT.

这些温度时间序列数据必须在数十年间保持稳定，以避免将错误的温度趋势混叠到错误的臭氧趋势中。
These temperature time series must be stable over multiple decades to avoid aliasing false temperature trends into false ozone trends.

为了避免混叠，模数转换器使用低通滤波器来去除任何太高而无法正确实现的频率。
To avoid aliasing, analog-to-digital converters use a low-pass filter to remove any frequencies that would be too high to be properly realized.

Note9图像也可能出现一些色彩混叠伪像（摩尔纹）、彩色边纹，HDR图像中也会出现重影（记录的问题）。
The Note 9 images can also show some color aliasing(moiré patterns), color fringing, and ghosting(registration issues) in HDR images.

图2显示的是时间域内，使用6Hz原始输入，以及其两个混叠的情况：这两个混叠分别为1Hz和8Hz。
Figure 2 illustrates what this looks like in the time domain using the original 6-Hz input and two of its aliases: 1Hz and 8Hz.

摘要:在数据采样系统中，高于二分之一采样率的频率成分“混叠”(搬移)到有用频带。
Abstract: In a sampled data system, frequency components greater than half the sampling rate\"alias\"(shift) into the frequency band of interest.

为了限制混叠的可能性，可以高速率对数据进行采样以防止混叠，然后在抽取之前使用数字滤波器进行低通滤波。
To limit the possibility of aliasing, the data can be sampled at a high rate and then low-pass filtered, using a digital filter, before decimation.

不过，SCF是通过要求采样频率高达输入信号带宽五十到一百倍的方式来避免混叠的，这为防止混叠提供了足够的防护带。
However, SCFs avoid aliasing by requiring the sampling frequency to be fifty to one hundred times the bandwidth of the input signal.

与使用功率占空比来实现低功耗的加速度计不同，ADXL362没有通过欠采样混叠输入信号；.
Unlike accelerometers that use power duty cycling to achieve low power consumption, the ADXL362 does not alias input signals by under sampling;

Pixel2的视频伪像分数（86）相当不错，但由于过度的抖动和少量的混叠而被扣了一些分数。
The Pixel 2's video Artifact sub-score(86) is quite good, but was somewhat reduced because of excessive judder and a small amount of aliasing.

由于采样频率fSAMPLING=125MHz，远大于奈奎斯特定律要求的两倍输入频率，所以不会出现混叠。
The sampling frequency, fSAMPLING= 125MHz, is more than twice the input frequency as required by the Nyquist criterion, and therefore no aliasing occurs.