automatic gain control

简明释义

自动增益控制

英英释义

例句

1.The camera uses automatic gain control 自动增益控制 to improve image quality in low-light conditions.

相机使用自动增益控制 自动增益控制来提高低光条件下的图像质量。

2.In live sound systems, automatic gain control 自动增益控制 helps to maintain consistent audio levels.

在现场音响系统中，自动增益控制 自动增益控制有助于保持一致的音频水平。

3.We implemented automatic gain control 自动增益控制 in our recording software to enhance audio clarity.

我们在录音软件中实施了自动增益控制 自动增益控制以增强音频清晰度。

4.The audio engineer adjusted the levels to ensure that the automatic gain control 自动增益控制 was functioning properly.

音频工程师调整了音量，以确保自动增益控制 自动增益控制正常工作。

5.The radio station relies on automatic gain control 自动增益控制 to ensure broadcast quality.

广播电台依赖于自动增益控制 自动增益控制来确保播出质量。

作文

In the world of audio engineering, one of the most critical components for ensuring high-quality sound is the use of automatic gain control. This technology plays a vital role in managing the levels of audio signals, allowing for a consistent output regardless of variations in input volume. The primary function of automatic gain control is to automatically adjust the gain of an audio signal to maintain a desired level. This is particularly important in environments where sound levels can fluctuate dramatically, such as live performances or broadcasting. Without automatic gain control, audio engineers would be forced to manually adjust levels constantly, which can be both time-consuming and prone to error.The concept of automatic gain control is rooted in its ability to enhance the listening experience by preventing distortion and clipping that can occur when audio signals exceed a certain threshold. For instance, during a concert, a singer may suddenly increase their volume, which could lead to an unpleasant audio experience if the system is not equipped with automatic gain control. By dynamically adjusting the gain, this technology ensures that the output remains clear and balanced, regardless of the input variations.Moreover, automatic gain control is not limited to live sound applications. It is also widely used in recording studios, telecommunications, and even consumer electronics. In recording, it allows for a more polished final product, as it can help to normalize levels across different tracks. In telecommunications, automatic gain control ensures that voice signals are transmitted at a consistent level, improving clarity and reducing listener fatigue.The underlying mechanics of automatic gain control involve a feedback loop that continuously monitors the output level and adjusts the gain accordingly. When the output exceeds a predetermined level, the system reduces the gain; conversely, when the output falls below the desired level, the gain is increased. This real-time adjustment process is crucial for maintaining audio fidelity and ensuring that the listener receives the best possible experience.However, while automatic gain control is a powerful tool, it is not without its challenges. One common issue is the potential for a 'pumping' effect, where the audio level fluctuates too drastically due to rapid adjustments in gain. This can be particularly noticeable in music with a wide dynamic range. To mitigate this, audio engineers must carefully set the parameters of the automatic gain control system to strike a balance between responsiveness and stability.In conclusion, automatic gain control is an essential technology in the field of audio engineering that enhances sound quality and consistency. Its ability to automatically adjust audio levels makes it invaluable in various applications, from live performances to studio recordings. As technology continues to advance, the role of automatic gain control will likely expand, further improving how we experience sound in our daily lives.

在音频工程的世界中，确保高质量声音的关键组成部分之一就是使用自动增益控制。这一技术在管理音频信号水平方面发挥着至关重要的作用，允许在输入音量变化的情况下保持一致的输出。自动增益控制的主要功能是自动调整音频信号的增益，以维持所需的水平。这在声音水平可能剧烈波动的环境中尤为重要，例如现场表演或广播。如果没有自动增益控制，音频工程师将不得不不断手动调整音量，这既耗时又容易出错。自动增益控制的概念源于其增强听觉体验的能力，通过防止音频信号超过某一阈值时可能发生的失真和削波。例如，在音乐会上，歌手可能会突然提高音量，如果系统没有配备自动增益控制，这可能导致不愉快的音频体验。通过动态调整增益，这项技术确保无论输入变化如何，输出都保持清晰和平衡。此外，自动增益控制并不仅限于现场声音应用。它在录音室、电信甚至消费电子产品中也得到了广泛应用。在录音中，它能够让最终产品更加精致，因为它可以帮助不同轨道之间的音量标准化。在电信中，自动增益控制确保语音信号以一致的水平传输，提高了清晰度，减少了听众的疲劳感。自动增益控制的基本机制涉及一个反馈回路，持续监测输出水平并相应地调整增益。当输出超过预定水平时，系统降低增益；相反，当输出低于所需水平时，增益会增加。这种实时调整过程对于保持音频保真度和确保听众获得最佳体验至关重要。然而，尽管自动增益控制是一种强大的工具，但它并非没有挑战。一个常见的问题是可能出现“泵送”效果，即由于增益的快速调整，音频水平波动过大。这在具有宽动态范围的音乐中尤其明显。为了减轻这种情况，音频工程师必须仔细设置自动增益控制系统的参数，以在响应性和稳定性之间取得平衡。总之，自动增益控制是音频工程领域中一项重要技术，它增强了声音的质量和一致性。其自动调整音频水平的能力使其在现场表演到录音室录制等各种应用中都显得不可或缺。随着技术的不断进步，自动增益控制的作用可能会进一步扩大，进一步改善我们在日常生活中体验声音的方式。