pulse code modulation

简明释义

脉码灯

英英释义

例句

1.Many digital broadcasting systems rely on pulse code modulation for signal encoding, or 脉冲编码调制用于信号编码。

许多数字广播系统依赖于脉冲编码调制进行信号编码，或脉冲编码调制用于信号编码。

2.The implementation of pulse code modulation in modern communication systems has greatly improved efficiency, or 脉冲编码调制在现代通信系统中的实施大大提高了效率。

现代通信系统中脉冲编码调制的实施大大提高了效率，或脉冲编码调制在现代通信系统中的实施大大提高了效率。

3.The audio signal was converted to digital format using pulse code modulation, which is known as 脉冲编码调制.

音频信号通过使用脉冲编码调制转换为数字格式，这被称为脉冲编码调制。

4.In telecommunications, pulse code modulation is essential for transmitting voice signals over long distances, or 脉冲编码调制在远距离传输语音信号中至关重要。

在电信中，脉冲编码调制对于长距离传输语音信号至关重要，或脉冲编码调制在远距离传输语音信号中至关重要。

5.Digital audio tapes utilize pulse code modulation to ensure high-quality sound reproduction, or 脉冲编码调制确保高质量的声音再现。

数字音频带利用脉冲编码调制来确保高质量的声音再现，或脉冲编码调制确保高质量的声音再现。

作文

In the modern world of digital communication, various techniques are employed to ensure the efficient transmission of information. One such technique is pulse code modulation, which plays a crucial role in converting analog signals into a digital format. This process is essential for many applications, including telecommunication, audio recording, and broadcasting. Understanding pulse code modulation is vital for anyone interested in the fields of electronics and communication technology.To begin with, pulse code modulation (PCM) involves sampling an analog signal at regular intervals. This sampling process captures the amplitude of the signal at each point in time, creating a series of discrete values. These values are then quantized, which means they are rounded to the nearest value within a finite set of levels. Finally, the quantized values are encoded into a binary format, enabling them to be transmitted over digital communication channels.The significance of pulse code modulation lies in its ability to maintain the integrity of the original signal while converting it into a digital form. Unlike other modulation techniques that may introduce noise or distortion, PCM provides a high-quality representation of the analog signal. This quality is especially important in applications such as music production, where clarity and fidelity are paramount.Moreover, pulse code modulation is widely used in various digital audio formats, including CDs and MP3s. When music is recorded onto a CD, it is first converted into an analog signal, which is then sampled and quantized using PCM. The resulting digital data can be easily stored and transmitted without significant loss of quality. This process has revolutionized the music industry, allowing for the widespread distribution of high-fidelity audio.In addition to audio applications, pulse code modulation is also utilized in video compression and transmission. For example, when a video is captured, it is often composed of a series of frames that need to be processed and transmitted efficiently. By applying PCM techniques to each frame, the video can be compressed into a manageable size for streaming or storage while retaining the visual quality.Furthermore, the implementation of pulse code modulation is not limited to consumer applications. It is also prevalent in various industrial and scientific fields. For instance, in medical imaging, PCM is used to digitize signals from ultrasound machines, ensuring accurate and reliable images for diagnosis. Similarly, in telecommunications, PCM is fundamental in the encoding and decoding of voice signals, allowing for clear and uninterrupted communication.Despite its advantages, pulse code modulation does have some limitations. The primary drawback is the requirement for a higher bandwidth compared to analog transmission methods. Since PCM involves sending a series of digital values, it can consume more bandwidth, which may not be feasible in all situations. However, advancements in technology continue to mitigate these challenges, making PCM an increasingly viable option for various applications.In conclusion, pulse code modulation is a foundational technology in the realm of digital communication. Its ability to convert analog signals into high-quality digital representations has transformed industries ranging from music to medicine. As technology continues to evolve, understanding the principles and applications of pulse code modulation will remain essential for professionals in the field. By grasping this concept, individuals can better appreciate the intricacies of modern communication systems and their impact on our daily lives.

在现代数字通信的世界中，各种技术被用来确保信息的有效传输。其中一种技术是脉冲编码调制，它在将模拟信号转换为数字格式方面发挥着至关重要的作用。这个过程对许多应用至关重要，包括电信、音频录制和广播。理解脉冲编码调制对于任何对电子和通信技术感兴趣的人来说都是至关重要的。首先，脉冲编码调制（PCM）涉及在规则间隔内对模拟信号进行采样。这个采样过程在每个时间点捕捉信号的幅度，创建一系列离散值。这些值随后被量化，这意味着它们被四舍五入到有限级别内的最接近值。最后，量化的值被编码为二进制格式，使其能够通过数字通信通道进行传输。脉冲编码调制的重要性在于它能够在将原始信号转换为数字形式的同时保持信号的完整性。与其他可能引入噪声或失真的调制技术不同，PCM提供了高质量的模拟信号表示。这种质量在音乐制作等应用中尤为重要，在这些应用中，清晰度和保真度至关重要。此外，脉冲编码调制广泛用于各种数字音频格式，包括CD和MP3。当音乐录制到CD上时，它首先被转换为模拟信号，然后使用PCM进行采样和量化。生成的数字数据可以轻松存储和传输，而不会显著损失质量。这个过程彻底改变了音乐行业，使高保真音频的广泛分发成为可能。除了音频应用，脉冲编码调制还用于视频压缩和传输。例如，当捕获视频时，通常由一系列需要高效处理和传输的帧组成。通过对每一帧应用PCM技术，可以将视频压缩为可管理的大小，以便流式传输或存储，同时保持视觉质量。此外，脉冲编码调制的实施不仅限于消费应用。它在各种工业和科学领域也很普遍。例如，在医学成像中，PCM用于数字化超声机器的信号，确保准确可靠的诊断图像。同样，在电信中，PCM在语音信号的编码和解码中是基础，允许清晰和不间断的通信。尽管有其优点，脉冲编码调制确实存在一些局限性。主要缺点是与模拟传输方法相比，需要更高的带宽。由于PCM涉及发送一系列数字值，因此可能会消耗更多带宽，这在某些情况下可能不可行。然而，技术的进步继续减轻这些挑战，使PCM在各种应用中变得越来越可行。总之，脉冲编码调制是数字通信领域的基础技术。它将模拟信号转换为高质量数字表示的能力已经改变了从音乐到医学的各个行业。随着技术的不断发展，理解脉冲编码调制的原理和应用将继续对该领域的专业人士至关重要。通过掌握这一概念，个人可以更好地欣赏现代通信系统的复杂性及其对我们日常生活的影响。