decibel with reference to one pecowatt

简明释义

皮瓦分贝

英英释义

例句

1.In audio engineering, a sound measured at 90 decibel with reference to one picowatt is considered very loud.

在音频工程中，测得的声音为90以一个皮瓦特为参考的分贝被认为是非常响的。

2.The sound level of the whisper is about 30 decibel with reference to one picowatt, which is quite low.

耳语的声音级别约为30以一个皮瓦特为参考的分贝，这相当低。

3.The threshold of hearing is defined as 0 decibel with reference to one picowatt.

听觉的阈值定义为0以一个皮瓦特为参考的分贝。

4.A normal conversation typically occurs at around 60 decibel with reference to one picowatt.

正常对话的声音通常在60以一个皮瓦特为参考的分贝左右。

5.Industrial machines can produce noise levels exceeding 100 decibel with reference to one picowatt.

工业机器可以产生超过100以一个皮瓦特为参考的分贝的噪音水平。

作文

Understanding sound levels is crucial in various fields, from engineering to environmental science. One commonly used unit of measurement for sound intensity is the decibel (dB). However, to fully grasp the implications of this measurement, it is essential to recognize its reference point. In this context, we often encounter the phrase decibel with reference to one picowatt, which provides a specific baseline for measuring sound power. This term may initially seem complex, but breaking it down can enhance our comprehension of sound measurement.The decibel scale is logarithmic, meaning that each increase of 10 dB represents a tenfold increase in sound intensity. When we refer to decibel with reference to one picowatt, we are specifying that the baseline for our measurements is one picowatt of power. A picowatt is one trillionth of a watt, which is a very small amount of power. By using this reference, we can express sound levels in a way that is manageable and understandable.For instance, if a sound is measured at 0 dB with reference to one picowatt, it means that the sound intensity is equal to one picowatt. In practical terms, this is an incredibly low level of sound, often below the threshold of human hearing. As we move up the scale, a sound measured at 10 dB would be ten times more intense than the reference level, while a sound at 20 dB would be a hundred times more intense.The importance of understanding decibel with reference to one picowatt extends beyond academic interest. In real-world applications, such as audio engineering, noise control, and public health, accurately measuring sound levels is vital. For example, in a concert setting, sound engineers must monitor decibel levels to ensure that they do not exceed safe limits, protecting both performers and the audience from potential hearing damage.Moreover, environmental scientists use this measurement to assess noise pollution in urban areas. By quantifying sound levels in decibels with reference to one picowatt, they can evaluate the impact of noise on wildlife and human health. Such assessments are crucial for developing regulations and guidelines aimed at reducing harmful noise exposure.Furthermore, the concept of decibel with reference to one picowatt is also relevant in telecommunications, where signal strength is often measured in decibels. Understanding this reference point allows engineers to optimize communication systems, ensuring clear and reliable transmission of information.In conclusion, the phrase decibel with reference to one picowatt serves as an essential tool for quantifying sound intensity in a standardized manner. By recognizing the significance of this reference point, we can better understand the implications of sound measurements in various fields. Whether in engineering, environmental science, or public health, mastering this concept is key to addressing the challenges associated with sound and its impact on our lives. As we continue to navigate a world filled with sound, the ability to measure and interpret it accurately becomes increasingly important.

理解声音水平在各个领域都至关重要，从工程到环境科学。一个常用的声音强度测量单位是分贝（dB）。然而，要充分掌握这一测量的含义，必须认识到其参考点。在这种情况下，我们经常遇到短语以一皮瓦特为参照的分贝，它为测量声功率提供了一个特定的基准。这个术语起初可能看起来复杂，但分解它可以增强我们对声音测量的理解。分贝尺度是对数的，这意味着每增加10 dB代表声音强度的十倍增加。当我们提到以一皮瓦特为参照的分贝时，我们指定我们的测量基线是一皮瓦特的功率。皮瓦特是瓦特的一万亿分之一，这是一个非常小的功率单位。通过使用这个参考，我们可以以一种可管理和可理解的方式表达声音水平。例如，如果某个声音被测量为0 dB，以一皮瓦特为参照，这意味着声音强度等于一皮瓦特。在实际意义上，这是一种极低的声音水平，通常低于人类听觉的阈值。随着我们在尺度上向上移动，测得的声音为10 dB将比参考水平强十倍，而20 dB的声音将强一百倍。理解以一皮瓦特为参照的分贝的重要性超出了学术兴趣。在实际应用中，如音频工程、噪声控制和公共卫生，准确测量声音水平至关重要。例如，在音乐会现场，声音工程师必须监控分贝水平，以确保不超过安全限制，保护表演者和观众免受潜在的听力损伤。此外，环境科学家利用这一测量来评估城市区域的噪声污染。通过量化以一皮瓦特为参照的分贝声级，他们可以评估噪声对野生动物和人类健康的影响。这种评估对于制定旨在减少有害噪声暴露的法规和指南至关重要。此外，以一皮瓦特为参照的分贝的概念在电信中也很相关，信号强度通常以分贝为单位进行测量。理解这一参考点使工程师能够优化通信系统，确保信息的清晰和可靠传输。总之，短语以一皮瓦特为参照的分贝作为量化声音强度的重要工具，以标准化的方式进行测量。通过认识到这一参考点的意义，我们可以更好地理解声音测量在各个领域的影响。无论是在工程、环境科学还是公共卫生，掌握这一概念是应对与声音及其对我们生活影响相关挑战的关键。随着我们继续在充满声音的世界中导航，准确测量和解释声音的能力变得愈发重要。