harmonic distortion

简明释义

谐波失真

英英释义

例句

1.The audio engineer measured the level of harmonic distortion 谐波失真 in the recording to ensure it met industry standards.

音频工程师测量了录音中的harmonic distortion 谐波失真水平，以确保其符合行业标准。

2.Musicians often prefer equipment with minimal harmonic distortion 谐波失真 for studio recordings.

音乐家通常偏好在录音室录音时使用具有最小harmonic distortion 谐波失真的设备。

3.The specifications of the speaker indicate a low harmonic distortion 谐波失真 rating for clearer audio output.

扬声器的规格表明其低harmonic distortion 谐波失真评级，以获得更清晰的音频输出。

4.To improve sound quality, the technician reduced the harmonic distortion 谐波失真 in the amplifier circuit.

为了提高音质，技术人员减少了放大器电路中的harmonic distortion 谐波失真。

5.High levels of harmonic distortion 谐波失真 can cause unpleasant sounds in music playback.

高水平的harmonic distortion 谐波失真可能会导致音乐播放时产生不愉快的声音。

作文

Harmonic distortion is a term that frequently arises in the fields of audio engineering, electronics, and signal processing. It refers to the alteration of a waveform that occurs when a system does not perfectly reproduce the input signal. Essentially, when an audio signal passes through an amplifier or any electronic device, it may generate additional frequencies that are harmonics of the original signal. These unwanted frequencies can distort the sound, leading to a less accurate representation of the intended audio. Understanding harmonic distortion (谐波失真) is crucial for audio engineers and musicians alike, as it directly impacts sound quality.To illustrate this concept, let’s consider a simple example. Imagine you are listening to your favorite song on a high-quality sound system. The music is clear, crisp, and enjoyable. However, if the amplifier used to power the speakers is of low quality, it may introduce harmonic distortion (谐波失真) into the sound. This could manifest as a muddy bass line or a harsh treble, altering the way you perceive the music. In this case, the original waveform of the audio signal has been modified, resulting in a less faithful reproduction of the sound.Harmonic distortion is typically measured using a percentage, which indicates how much of the output signal is made up of these unwanted harmonic frequencies. A lower percentage signifies a cleaner, more accurate sound reproduction, while a higher percentage indicates that the signal has been significantly altered. For instance, a professional-grade audio system might have a harmonic distortion (谐波失真) rating of less than 0.01%, whereas a cheaper system might have a rating above 1%. This stark contrast highlights the importance of selecting the right equipment for optimal sound performance.There are several types of harmonic distortion (谐波失真), including total harmonic distortion (THD) and intermodulation distortion (IMD). Total harmonic distortion measures the sum of all harmonic frequencies generated by the system, while intermodulation distortion refers to the creation of new frequencies when two or more signals interact. Both types can adversely affect audio quality, but they arise from different mechanisms within the system.In addition to audio applications, harmonic distortion (谐波失真) is also relevant in other areas, such as power systems and telecommunications. In electrical systems, for example, harmonic distortion can lead to overheating of equipment, reduced efficiency, and even potential damage. Engineers must carefully design systems to minimize harmonic distortion (谐波失真) and ensure that they operate within acceptable limits.Furthermore, understanding harmonic distortion (谐波失真) is essential for troubleshooting issues in audio and electrical systems. When problems arise, technicians often analyze the levels of distortion present to identify the source of the issue. By addressing the factors contributing to harmonic distortion (谐波失真), they can restore the system to its intended performance level.In conclusion, harmonic distortion (谐波失真) is a critical concept in both audio engineering and electrical systems. Its impact on sound quality and equipment performance cannot be overstated. By gaining a deeper understanding of this phenomenon, professionals can make informed decisions about equipment selection, system design, and troubleshooting. Whether you are an audio enthusiast or an engineer, recognizing the significance of harmonic distortion (谐波失真) will enhance your appreciation for the technology that shapes our auditory experiences.

谐波失真是一个在音频工程、电子学和信号处理领域经常出现的术语。它指的是当一个系统未能完美地重现输入信号时，波形发生的变化。简单来说，当音频信号通过放大器或任何电子设备时，可能会产生额外的频率，这些频率是原始信号的谐波。这些不必要的频率会扭曲声音，从而导致对预期音频的不准确表示。理解谐波失真(harmonic distortion)对于音频工程师和音乐家而言至关重要，因为它直接影响声音质量。为了说明这一概念，让我们考虑一个简单的例子。想象一下，你正在高品质音响系统上听你最喜欢的歌曲。音乐清晰、明亮且令人愉悦。然而，如果用于驱动扬声器的放大器质量较低，它可能会在声音中引入谐波失真(harmonic distortion)。这可能表现为混浊的低音线或刺耳的高音，改变你对音乐的感知。在这种情况下，音频信号的原始波形已被修改，导致声音的再现不那么真实。谐波失真通常以百分比来衡量，这表示输出信号中有多少部分是由这些不必要的谐波频率组成的。较低的百分比表示更干净、更准确的声音再现，而较高的百分比则表明信号已经被显著改变。例如，专业级音频系统的谐波失真(harmonic distortion)评级可能低于0.01%，而便宜的系统的评级可能超过1%。这种鲜明的对比突显了选择合适设备以获得最佳声音性能的重要性。谐波失真(harmonic distortion)有几种类型，包括总谐波失真（THD）和互调失真（IMD）。总谐波失真测量系统生成的所有谐波频率的总和，而互调失真则指当两个或多个信号相互作用时产生的新频率。这两种类型都可能对音质产生不利影响，但它们在系统中产生的机制不同。除了音频应用外，谐波失真(harmonic distortion)在电力系统和电信等其他领域也相关。在电气系统中，例如，谐波失真可能导致设备过热、效率降低，甚至潜在损坏。工程师必须仔细设计系统，以最小化谐波失真(harmonic distortion)并确保它们在可接受的范围内运行。此外，理解谐波失真(harmonic distortion)对于排除音频和电气系统中的问题至关重要。当出现问题时，技术人员通常会分析存在的失真水平，以识别问题的来源。通过解决导致谐波失真(harmonic distortion)的因素，他们可以将系统恢复到其预期的性能水平。总之，谐波失真(harmonic distortion)是音频工程和电气系统中的一个关键概念。它对声音质量和设备性能的影响不容小觑。通过深入理解这一现象，专业人员可以在设备选择、系统设计和故障排除方面做出明智的决策。无论你是音频爱好者还是工程师，认识到谐波失真(harmonic distortion)的重要性将增强你对塑造我们听觉体验的技术的欣赏。