active filter

简明释义

有源滤波器

英英释义

例句

1.The active filter in the signal processing unit helps to stabilize the output signal.

信号处理单元中的主动滤波器有助于稳定输出信号。

2.For better noise reduction, we decided to implement an active filter in the circuit design.

为了更好的噪声减少，我们决定在电路设计中实施一个主动滤波器。

3.In the design of the speaker system, an active filter was implemented to manage the crossover between different frequency ranges.

在扬声器系统的设计中，实施了一个主动滤波器来管理不同频率范围之间的交叉。

4.Using an active filter can significantly improve the performance of RF circuits.

使用主动滤波器可以显著提高射频电路的性能。

5.The audio engineer used an active filter to enhance the sound quality by removing unwanted frequencies.

音频工程师使用了一个主动滤波器来通过去除不需要的频率来增强音质。

作文

In the realm of electronics and signal processing, the term active filter refers to a type of filter that uses active components such as operational amplifiers, transistors, or other amplifying devices to enhance the performance of the filtering process. Unlike passive filters, which consist solely of resistors, capacitors, and inductors, active filters can provide gain, improve impedance matching, and offer better control over frequency response. This makes them particularly useful in various applications, including audio processing, telecommunications, and instrumentation. One of the primary advantages of using an active filter is its ability to achieve a desired frequency response without the need for large passive components. For instance, in a typical audio application, a designer might employ a low-pass active filter to eliminate high-frequency noise while maintaining the integrity of the audio signal. By utilizing operational amplifiers, the designer can create a filter that not only attenuates unwanted frequencies but also amplifies the desired signal, resulting in a clearer sound output.Another significant benefit of active filters is their flexibility in design. Engineers can easily adjust the cutoff frequency and gain by changing component values or configurations. This adaptability is crucial in modern electronic systems, where specifications often change or vary from one project to another. For example, in a radio frequency application, an active filter can be designed to target specific frequency bands, allowing for selective signal processing that enhances overall system performance.However, it is important to note that active filters also come with certain limitations. One major drawback is their dependence on a power supply, which can complicate circuit design and increase the overall system cost. Additionally, active filters may introduce distortion if not carefully designed, particularly at high frequencies. Therefore, engineers must weigh the benefits against these potential issues when selecting a filtering solution for their projects.In summary, the concept of active filter plays a vital role in the field of electronics and signal processing. By utilizing active components, these filters provide enhanced performance, greater design flexibility, and improved signal integrity compared to their passive counterparts. Whether in audio applications, telecommunications, or other electronic systems, active filters are indispensable tools that allow engineers to manipulate and refine signals effectively. As technology continues to evolve, the importance of active filters will undoubtedly grow, paving the way for more sophisticated and efficient electronic designs.

在电子和信号处理领域，短语active filter指的是一种使用运算放大器、晶体管或其他放大设备等主动元件来增强过滤过程性能的滤波器。与仅由电阻、电容和电感组成的被动滤波器不同，active filter可以提供增益、改善阻抗匹配，并对频率响应提供更好的控制。这使得它们在音频处理、电信和仪器等各种应用中特别有用。使用active filter的主要优点之一是能够在不需要大型被动元件的情况下实现所需的频率响应。例如，在典型的音频应用中，设计师可能会采用低通active filter来消除高频噪声，同时保持音频信号的完整性。通过利用运算放大器，设计师可以创建一个不仅衰减不必要频率而且放大所需信号的滤波器，从而产生更清晰的声音输出。另一个重要的好处是active filters在设计上的灵活性。工程师可以通过改变元件值或配置轻松调整截止频率和增益。这种适应能力在现代电子系统中至关重要，因为规格往往会变化或在不同项目之间有所不同。例如，在射频应用中，可以设计一个active filter来针对特定频段，从而允许选择性信号处理，提高整体系统性能。然而，需要注意的是，active filters也有一些局限性。一个主要缺点是它们依赖于电源，这可能会使电路设计变得复杂，并增加整体系统成本。此外，如果设计不当，active filters可能会引入失真，特别是在高频下。因此，工程师在为其项目选择过滤解决方案时，必须权衡这些潜在问题与好处。总之，active filter的概念在电子和信号处理领域发挥着至关重要的作用。通过利用主动元件，这些滤波器提供了比被动滤波器更高的性能、更大的设计灵活性和更好的信号完整性。无论是在音频应用、电信还是其他电子系统中，active filters都是不可或缺的工具，使工程师能够有效地操控和精炼信号。随着技术的不断发展，active filters的重要性无疑将会增长，为更复杂和高效的电子设计铺平道路。