audio-frequency amplifier

简明释义

音频放大器

英英释义

例句

1.During the concert, the technician monitored the audio-frequency amplifier to prevent any distortion in the music.

在音乐会上，技术人员监控着音频频率放大器，以防止音乐失真。

2.He built his own audio-frequency amplifier from scratch to power his vintage speakers.

他从头开始自己制作了一个音频频率放大器，以为他的复古音箱供电。

3.A high-quality audio-frequency amplifier is essential for achieving the best sound quality in a home theater system.

高品质的音频频率放大器对于在家庭影院系统中实现最佳音质至关重要。

4.The audio-frequency amplifier in this device allows it to produce rich and deep bass sounds.

这个设备中的音频频率放大器使其能够产生丰富而深沉的低音。

5.The sound engineer adjusted the settings on the audio-frequency amplifier to enhance the clarity of the vocals.

音响工程师调整了音频频率放大器的设置，以增强人声的清晰度。

作文

In the realm of electronics, the term audio-frequency amplifier refers to a specific type of amplifier that is designed to amplify audio signals within the frequency range of approximately 20 Hz to 20 kHz. This frequency range corresponds to the limits of human hearing, making the audio-frequency amplifier an essential component in various audio applications, including music playback, public address systems, and broadcasting. The primary function of an audio-frequency amplifier is to increase the amplitude of low-level audio signals so that they can drive speakers or other output devices effectively.Understanding the significance of audio-frequency amplifiers requires a basic knowledge of sound and audio technology. Sound waves are vibrations that travel through the air, and these vibrations can be represented as electrical signals. When a musical instrument is played or a voice is spoken, these sounds generate electrical signals that need to be amplified for better sound reproduction. Here is where the audio-frequency amplifier comes into play.An audio-frequency amplifier typically consists of several stages, each designed to enhance the signal progressively while minimizing distortion and noise. The first stage often involves a preamplifier, which boosts the weak audio signals from microphones or musical instruments. This is crucial because raw audio signals are usually too weak to drive speakers directly. After the preamplification stage, the signal is sent through additional amplification stages, where it is further enhanced before reaching the output stage.The design of an audio-frequency amplifier can vary widely depending on its intended use. For instance, home audio systems may utilize high-fidelity (hi-fi) audio-frequency amplifiers that prioritize sound quality and fidelity. In contrast, public address systems might use more robust amplifiers that can handle higher power levels to ensure that the sound reaches a larger audience without distortion.Moreover, modern advancements in technology have led to the development of digital audio-frequency amplifiers, which convert analog audio signals into digital form for processing. These amplifiers offer numerous advantages, including improved efficiency, reduced size, and enhanced sound quality. Digital audio-frequency amplifiers are commonly found in smartphones, computers, and various portable audio devices.The importance of audio-frequency amplifiers extends beyond personal enjoyment of music or speeches; they play a vital role in numerous industries, including film production, telecommunications, and live event management. For example, in film production, sound engineers rely on audio-frequency amplifiers to ensure that dialogue, sound effects, and background music are mixed properly for optimal viewing experiences. Similarly, in live events, sound technicians use audio-frequency amplifiers to manage the audio levels for performers and speakers, ensuring that every word and note is heard clearly by the audience.In conclusion, the audio-frequency amplifier is a critical component in the world of audio technology. Its ability to amplify sound signals makes it indispensable for various applications, from casual music listening to professional audio production. Understanding how these amplifiers work and their significance in different contexts allows us to appreciate the technology that enhances our auditory experiences. As technology continues to evolve, the role of audio-frequency amplifiers will undoubtedly expand, leading to even more innovative ways to enjoy and interact with sound.

在电子学领域，术语音频频率放大器指的是一种特定类型的放大器，旨在放大约为20 Hz到20 kHz的音频信号。这个频率范围对应于人类听觉的极限，使得音频频率放大器成为各种音频应用中必不可少的组成部分，包括音乐播放、公共广播系统和广播。音频频率放大器的主要功能是增加低电平音频信号的幅度，以便能够有效驱动扬声器或其他输出设备。理解音频频率放大器的重要性需要对声音和音频技术有基本的了解。声音波是通过空气传播的振动，这些振动可以表示为电信号。当乐器演奏或人声发出时，这些声音会产生电信号，这些信号需要被放大以便更好地重现声音。这就是音频频率放大器发挥作用的地方。音频频率放大器通常由几个阶段组成，每个阶段都旨在逐步增强信号，同时最小化失真和噪声。第一阶段通常涉及前置放大器，它增强来自麦克风或乐器的微弱音频信号。这一点至关重要，因为原始音频信号通常太弱，无法直接驱动扬声器。在前置放大阶段之后，信号会通过额外的放大阶段进行处理，在到达输出阶段之前进一步增强。音频频率放大器的设计可以根据其预期用途而有所不同。例如，家庭音频系统可能会使用高保真（hi-fi）音频频率放大器，优先考虑音质和保真度。相反，公共广播系统可能会使用更强大的放大器，以确保声音能够在没有失真的情况下传达到更大的人群。此外，现代技术的进步导致了数字音频频率放大器的发展，这些放大器将模拟音频信号转换为数字形式进行处理。这些放大器提供了许多优点，包括提高效率、减小体积和增强音质。数字音频频率放大器通常出现在智能手机、计算机和各种便携式音频设备中。音频频率放大器的重要性不仅限于个人享受音乐或演讲；它们在电影制作、电信和现场活动管理等多个行业中发挥着至关重要的作用。例如，在电影制作中，声音工程师依赖音频频率放大器来确保对话、音效和背景音乐的混合，以获得最佳的观看体验。同样，在现场活动中，音响技术人员使用音频频率放大器来管理表演者和演讲者的音频水平，确保观众清晰地听到每个字和音符。总之，音频频率放大器是音频技术世界中的关键组成部分。它放大声音信号的能力使其在各种应用中不可或缺，从休闲音乐欣赏到专业音频制作。理解这些放大器的工作原理及其在不同背景下的重要性，使我们能够欣赏增强我们听觉体验的技术。随着技术的不断发展，音频频率放大器的角色无疑会扩大，带来更创新的方式来享受和互动声音。