decibel referred to one milliwatt

简明释义

毫瓦分贝

英英释义

例句

1.When measuring signal strength, we often use decibel referred to one milliwatt 以毫瓦为基准的分贝 as a standard reference.

在测量信号强度时，我们通常使用decibel referred to one milliwatt 以毫瓦为基准的分贝作为标准参考.

2.The specifications for this microphone indicate that it operates at a sensitivity of decibel referred to one milliwatt 以毫瓦为基准的分贝.

该麦克风的规格表明其灵敏度为decibel referred to one milliwatt 以毫瓦为基准的分贝.

3.The noise level in the concert hall was measured at 100 decibel referred to one milliwatt 以毫瓦为基准的分贝, indicating a very loud environment.

音乐厅的噪音水平测量为100 decibel referred to one milliwatt 以毫瓦为基准的分贝，这表明环境非常嘈杂.

4.In telecommunications, decibel referred to one milliwatt 以毫瓦为基准的分贝 is crucial for determining the quality of the signal.

在电信中，decibel referred to one milliwatt 以毫瓦为基准的分贝对于确定信号质量至关重要.

5.The audio engineer adjusted the sound levels to ensure that the output was at a safe level of decibel referred to one milliwatt 以毫瓦为基准的分贝.

音频工程师调整了音量，以确保输出在安全水平上，达到decibel referred to one milliwatt 以毫瓦为基准的分贝.

作文

Understanding the concept of sound and its measurement is crucial in various fields, especially in acoustics and telecommunications. One of the most common units used to measure sound intensity is the decibel (dB). However, it is essential to understand that the decibel scale is logarithmic and relative, which can sometimes lead to confusion. A key phrase that often comes up in discussions about sound measurement is decibel referred to one milliwatt, which is a standard reference point for measuring power levels in audio systems and telecommunications. In this essay, we will explore what this phrase means and why it is important in understanding sound levels.The term 'decibel' itself is a unit of measurement that expresses the ratio of two values, typically power or intensity. When we say decibel referred to one milliwatt, we are specifically talking about a measurement that uses one milliwatt (mW) as a reference power level. This means that when we express sound levels in decibels, we are comparing the power of the sound to a baseline of one milliwatt. For example, if a sound system produces a power level of 1 watt, it would be measured as 30 dB because it is 30 times greater than the reference level of one milliwatt.The importance of using one milliwatt as a reference point lies in its practicality and standardization. By having a common reference, it allows engineers, technicians, and researchers to communicate sound levels clearly and effectively. This standardization is particularly useful in fields such as telecommunications, where maintaining consistent power levels is critical for ensuring the clarity and quality of audio signals. Without a standard reference point like decibel referred to one milliwatt, it would be challenging to compare different sound systems or devices accurately.Moreover, the logarithmic nature of the decibel scale means that small changes in power can result in significant changes in perceived loudness. For instance, an increase of just 10 dB represents a tenfold increase in power, which can make a substantial difference in how we perceive sound. This relationship highlights the importance of understanding the reference point of one milliwatt when discussing sound levels. It also emphasizes why sound engineers must carefully consider their measurements and adjustments, ensuring that they remain within acceptable limits to avoid distortion or damage to audio equipment.In conclusion, the phrase decibel referred to one milliwatt encapsulates a fundamental concept in sound measurement that is essential for professionals in various industries. By using one milliwatt as a reference point, we can create a standardized way to discuss and compare sound levels, ensuring clarity and consistency in communication. As technology continues to advance and sound systems become more complex, understanding this concept will remain vital for anyone working with audio or sound-related technologies.

理解声音及其测量的概念在各个领域都是至关重要的，尤其是在声学和电信领域。分贝（dB）是用于测量声音强度的最常用单位之一。然而，必须理解分贝尺度是对数和相对的，这有时会导致混淆。在讨论声音测量时，一个常常出现的关键短语是以一毫瓦为参考的分贝，这是用于测量音频系统和电信中功率水平的标准参考点。在这篇文章中，我们将探讨这个短语的含义以及它在理解声音水平中的重要性。“分贝”这个术语本身是一个测量单位，用于表示两个值之间的比率，通常是功率或强度。当我们说以一毫瓦为参考的分贝时，我们特别指的是使用一毫瓦（mW）作为参考功率水平的测量。这意味着，当我们以分贝表示声音水平时，我们是在将声音的功率与一毫瓦的基线进行比较。例如，如果一个音响系统产生1瓦的功率水平，它将被测量为30 dB，因为它比一毫瓦的参考水平大30倍。使用一毫瓦作为参考点的重要性在于其实用性和标准化。通过拥有一个共同的参考，工程师、技术人员和研究人员可以清晰有效地沟通声音水平。这种标准化在电信等领域尤其有用，因为保持一致的功率水平对于确保音频信号的清晰度和质量至关重要。如果没有像以一毫瓦为参考的分贝这样的标准参考点，准确比较不同的声音系统或设备将变得非常困难。此外，分贝尺度的对数特性意味着功率的小变化可能会导致感知响度的显著变化。例如，仅增加10 dB就代表功率增加十倍，这可能会对我们感知声音产生重大影响。这种关系突显了在讨论声音水平时理解一毫瓦参考点的重要性。它还强调了声音工程师在仔细考虑测量和调整时必须保持在可接受的范围内，以避免失真或损坏音频设备。总之，短语以一毫瓦为参考的分贝概括了声音测量中的一个基本概念，对于各行业的专业人士来说至关重要。通过使用一毫瓦作为参考点，我们可以创建一种标准化的方法来讨论和比较声音水平，确保沟通的清晰性和一致性。随着技术的不断进步和声音系统的日益复杂，理解这一概念将对任何从事音频或声音相关技术的人仍然至关重要。