cut-off frequency

简明释义

截止频率

英英释义

例句

1.In audio processing, the cut-off frequency can be adjusted to enhance or reduce certain frequency ranges.

在音频处理中，截止频率可以调整以增强或减少某些频率范围。

2.The cut-off frequency of a high-pass filter determines which low frequencies are blocked from passing through.

高通滤波器的截止频率决定了哪些低频信号被阻止通过。

3.The engineer calculated the cut-off frequency for the band-pass filter to ensure it only allowed specific frequencies.

工程师计算了带通滤波器的截止频率，以确保它只允许特定频率通过。

4.The low-pass filter has a cut-off frequency of 1 kHz, allowing signals below this frequency to pass through while attenuating higher frequencies.

这个低通滤波器的截止频率为1 kHz，允许低于此频率的信号通过，同时衰减更高频率的信号。

5.When designing a circuit, it's crucial to determine the cut-off frequency to achieve the desired filtering effect.

在设计电路时，确定截止频率以实现所需的滤波效果至关重要。

作文

In the field of engineering and physics, the concept of cut-off frequency plays a crucial role in the design and analysis of various systems, particularly in signal processing and telecommunications. The term cut-off frequency refers to the frequency at which the output signal power drops to half of its maximum value, often associated with filters and circuits. Understanding this concept is essential for engineers who work with electronic devices, as it helps them determine how signals will behave in different frequency ranges.To illustrate the importance of cut-off frequency, let’s consider an example of a low-pass filter. A low-pass filter is designed to allow signals with frequencies lower than a certain threshold to pass through while attenuating higher frequencies. The cut-off frequency in this case defines the point at which the filter begins to significantly reduce the amplitude of the input signal. For instance, if a low-pass filter has a cut-off frequency of 1 kHz, it means that signals below this frequency will largely pass through, while those above it will be increasingly diminished.The cut-off frequency is not only important in low-pass filters but also in high-pass filters, band-pass filters, and band-stop filters. Each type of filter has its own specific cut-off frequency characteristics that dictate its performance. In high-pass filters, the cut-off frequency indicates the point at which frequencies below this threshold are attenuated, allowing higher frequencies to pass. Meanwhile, band-pass filters have two cut-off frequencies, defining the range of frequencies that can successfully pass through the filter.Moreover, the cut-off frequency can be influenced by various factors, including the components used in the circuit, such as resistors, capacitors, and inductors. By adjusting these components, engineers can tailor the cut-off frequency to meet specific requirements for different applications. For example, in audio processing, a sound engineer might choose a cut-off frequency that enhances certain frequencies while suppressing others to achieve a desired sound quality.Another application of cut-off frequency is in the field of communication systems. In wireless communication, understanding the cut-off frequency is vital for optimizing signal transmission and reception. For instance, if a communication channel has a certain bandwidth, the cut-off frequency will determine the limits of that bandwidth, affecting how well the system can transmit data without interference or loss of quality.In conclusion, the concept of cut-off frequency is fundamental in various fields, especially in engineering and physics. It serves as a key parameter in designing filters and communication systems, influencing how signals are processed and transmitted. A solid understanding of cut-off frequency is essential for professionals working in these areas, as it allows them to create more efficient and effective systems. As technology continues to evolve, the relevance of cut-off frequency will remain significant, ensuring that engineers are equipped to handle the challenges of modern signal processing and telecommunications.

在工程和物理学领域，cut-off frequency（截止频率）这一概念在各种系统的设计和分析中发挥着至关重要的作用，特别是在信号处理和电信领域。cut-off frequency指的是输出信号功率降至其最大值一半时的频率，通常与滤波器和电路相关。理解这个概念对于从事电子设备工作的工程师至关重要，因为它帮助他们确定信号在不同频率范围内的行为。为了说明cut-off frequency的重要性，让我们考虑一个低通滤波器的例子。低通滤波器旨在允许低于某个阈值的信号频率通过，同时衰减高频信号。在这种情况下，cut-off frequency定义了滤波器开始显著降低输入信号幅度的点。例如，如果一个低通滤波器的cut-off frequency为1 kHz，这意味着低于此频率的信号将大部分通过，而高于此频率的信号将逐渐减弱。cut-off frequency不仅在低通滤波器中重要，在高通滤波器、带通滤波器和带阻滤波器中也同样重要。每种类型的滤波器都有其特定的cut-off frequency特性，决定其性能。在高通滤波器中，cut-off frequency表示低于该阈值的频率被衰减的点，从而允许高频信号通过。与此同时，带通滤波器具有两个cut-off frequency，定义了可以成功通过滤波器的频率范围。此外，cut-off frequency还会受到多种因素的影响，包括电路中使用的元件，如电阻、电容和电感。通过调整这些元件，工程师可以根据不同应用的具体要求来定制cut-off frequency。例如，在音频处理过程中，声音工程师可能会选择一个特定的cut-off frequency来增强某些频率，同时抑制其他频率，以达到所需的音质。cut-off frequency的另一个应用是在通信系统领域。在无线通信中，理解cut-off frequency对于优化信号传输和接收至关重要。例如，如果一个通信信道具有一定的带宽，cut-off frequency将决定该带宽的限制，影响系统在没有干扰或质量损失的情况下传输数据的能力。总之，cut-off frequency的概念在各个领域都是基础，尤其是在工程和物理学中。它作为设计滤波器和通信系统的关键参数，影响信号的处理和传输。对cut-off frequency的深入理解对于在这些领域工作的专业人士至关重要，因为它使他们能够创建更高效、更有效的系统。随着技术的不断发展，cut-off frequency的相关性将继续保持重要，确保工程师能够应对现代信号处理和电信领域的挑战。