directivity diagram

简明释义

辐射方位曲线

英英释义

例句

1.In radar technology, the directivity diagram 指向性图 indicates the sensitivity of the radar system in different directions.

在雷达技术中，指向性图 directivity diagram显示了雷达系统在不同方向上的灵敏度。

2.Understanding the directivity diagram 指向性图 is crucial for improving sound system performance.

理解指向性图 directivity diagram对于提高音响系统性能至关重要。

3.The directivity diagram 指向性图 helps in determining how a speaker will project sound in a room.

该指向性图 directivity diagram有助于确定扬声器在房间内的声音投射方式。

4.The engineer analyzed the directivity diagram 指向性图 to optimize the antenna design.

工程师分析了指向性图 directivity diagram以优化天线设计。

5.When designing a microphone array, the directivity diagram 指向性图 is essential for capturing sound accurately.

在设计麦克风阵列时，指向性图 directivity diagram对于准确捕捉声音至关重要。

作文

In the field of acoustics and signal processing, understanding the concept of a directivity diagram is crucial for designing effective sound systems and communication devices. A directivity diagram is a graphical representation that illustrates how an audio source, such as a microphone or speaker, radiates sound in different directions. This diagram helps engineers and designers visualize the directional characteristics of the sound source, which is essential for optimizing sound quality and minimizing unwanted noise.The directivity diagram typically displays the sound intensity or pressure level as a function of direction, often represented in polar coordinates. The shape of the diagram can vary significantly depending on the type of audio device being analyzed. For instance, omnidirectional microphones have a directivity diagram that appears as a perfect circle, indicating that they pick up sound equally from all directions. In contrast, directional microphones, such as cardioid or supercardioid models, have more complex shapes that illustrate their sensitivity to sound coming from specific angles while rejecting noise from others.One of the primary applications of a directivity diagram is in the design of public address systems and concert venues. By analyzing the directivity diagram of speakers, audio engineers can determine the optimal placement of speakers to ensure even sound distribution throughout the audience area. This is particularly important in large venues where sound may need to travel significant distances. By strategically positioning speakers based on their directivity diagrams, engineers can avoid issues like echoes and dead spots, ensuring that every audience member experiences clear and balanced sound.Moreover, the directivity diagram plays a vital role in the development of noise-canceling technologies. For example, headphones designed with active noise cancellation utilize microphones to detect ambient noise. These microphones are often chosen based on their directivity diagrams, allowing them to effectively capture unwanted sounds from specific directions while maintaining the clarity of the desired audio signal. Understanding the directivity diagram of these microphones enables engineers to create more effective noise-canceling solutions, enhancing the listening experience for users.In the realm of telecommunications, the directivity diagram is also relevant. Antennas, much like microphones and speakers, exhibit directional characteristics that can be analyzed through their directivity diagrams. A well-designed antenna will have a directivity diagram that maximizes signal reception from a desired source while minimizing interference from other directions. This is especially important in mobile communication, where maintaining a strong and clear signal is essential for effective communication.In conclusion, the directivity diagram is a fundamental tool in various fields, including acoustics, telecommunications, and audio engineering. By providing a visual representation of how sound or signals propagate in different directions, it allows professionals to make informed decisions about the design and placement of audio equipment and communication devices. Whether optimizing a concert sound system, developing noise-canceling headphones, or designing antennas for better connectivity, understanding the directivity diagram is key to achieving the best possible performance in any audio or communication application.

在声学和信号处理领域，理解“directivity diagram”的概念对于设计有效的音响系统和通信设备至关重要。directivity diagram是一个图形表示，说明了音频源（如麦克风或扬声器）如何在不同方向上辐射声音。这个图表帮助工程师和设计师可视化声音源的方向特性，这对于优化音质和最小化不必要的噪声是必不可少的。directivity diagram通常展示了声音强度或压力水平作为方向的函数，通常以极坐标表示。根据被分析的音频设备类型，图表的形状可能会显著不同。例如，全向麦克风的directivity diagram看起来像一个完美的圆，表明它们从所有方向均匀拾取声音。相比之下，定向麦克风（如心形或超心形模型）的形状更复杂，显示出它们对来自特定角度的声音的敏感性，同时排除来自其他方向的噪声。directivity diagram的一个主要应用是在公共广播系统和音乐会场所的设计中。通过分析扬声器的directivity diagram，音频工程师可以确定扬声器的最佳放置位置，以确保整个观众区域的声音分布均匀。这在大型场馆中尤为重要，因为声音可能需要传播很远的距离。通过根据其directivity diagrams战略性地放置扬声器，工程师可以避免回声和死角等问题，确保每位观众都能体验到清晰和均衡的声音。此外，directivity diagram在噪声消除技术的发展中也起着重要作用。例如，设计有主动噪声取消功能的耳机利用麦克风检测环境噪声。这些麦克风通常基于它们的directivity diagrams进行选择，使它们能够有效捕捉来自特定方向的不需要的声音，同时保持所需音频信号的清晰度。理解这些麦克风的directivity diagram使工程师能够创造出更有效的噪声取消解决方案，从而增强用户的听觉体验。在电信领域，directivity diagram同样相关。天线与麦克风和扬声器一样，具有可以通过其directivity diagrams分析的方向特性。设计良好的天线将具有一个directivity diagram，最大限度地提高来自所需源的信号接收，同时最小化来自其他方向的干扰。这在移动通信中尤为重要，因为保持强大而清晰的信号对于有效沟通至关重要。总之，directivity diagram是各个领域（包括声学、电信和音频工程）中的基本工具。通过提供声音或信号在不同方向上传播的可视化表示，它使专业人士能够就音频设备和通信设备的设计和放置做出明智的决策。无论是优化音乐会音响系统、开发噪声取消耳机，还是设计用于更好连接的天线，理解directivity diagram都是在任何音频或通信应用中实现最佳性能的关键。