beat frequency

简明释义

拍频、差频

英英释义

例句

1.In music, musicians often use beat frequency (拍频) to tune their instruments by listening for the beats created when two notes are played together.

在音乐中，音乐家常常利用拍频(beat frequency)来调音，通过聆听两个音符同时演奏时产生的节拍来进行调整。

2.The beat frequency (拍频) can be calculated by subtracting the frequencies of the two waves.

可以通过减去两波的频率来计算拍频(beat frequency)。

3.When two sound waves of slightly different frequencies are played together, they create a phenomenon known as beat frequency (拍频).

当两个稍微不同频率的声波同时播放时，它们会产生一种现象，称为拍频(beat frequency)。

4.Understanding beat frequency (拍频) helps audio engineers design better sound systems.

理解拍频(beat frequency)有助于音频工程师设计更好的音响系统。

5.In radio communications, beat frequency (拍频) is essential for mixing signals to create new frequencies.

在无线电通信中，拍频(beat frequency)对于混合信号以产生新频率至关重要。

作文

In the realm of physics and music, the term beat frequency refers to the phenomenon that occurs when two sound waves of slightly different frequencies interfere with each other. This interference creates a new wave pattern that fluctuates in amplitude, leading to a pulsating sound effect that is both intriguing and captivating. Understanding beat frequency not only deepens our appreciation for sound but also enhances our knowledge of various applications in technology and art.To illustrate this concept, consider two tuning forks: one vibrating at 440 Hz (the standard pitch for the note A) and another at 442 Hz. When both forks are struck simultaneously, the listener will hear a series of beats as the sound waves combine and cancel each other out at regular intervals. The beat frequency, in this case, is calculated by finding the difference between the two frequencies, which equals 2 Hz. This means that the listener perceives a fluctuation in loudness twice per second, creating a rich auditory experience.The phenomenon of beat frequency is not limited to musical instruments; it also plays a crucial role in various technological applications. For example, in radio broadcasting, the principle of beat frequency is utilized to mix signals. When two radio waves of different frequencies intersect, they produce a new signal at the beat frequency that can be tuned into by receivers. This technique allows for the transmission of complex information over long distances, making modern communication possible.Moreover, the concept of beat frequency extends beyond sound waves to encompass other forms of waves, such as light. In optics, when two light waves of slightly different frequencies overlap, they can create a similar interference pattern, resulting in variations in brightness known as fringes. This principle is essential in various scientific fields, including quantum mechanics and laser technology.In the world of music, composers and musicians often exploit the effects of beat frequency to create unique soundscapes. By layering different tones and pitches, they can produce a rich tapestry of sounds that evoke emotion and enhance the listening experience. For instance, in genres like ambient music, artists may intentionally use beat frequency to create a sense of movement and depth within their compositions, drawing listeners into a more immersive auditory environment.Understanding beat frequency also has practical implications in tuning musical instruments. Musicians often use the concept to ensure that their instruments are in harmony. When tuning, a musician may listen for the beat frequency created by two notes played simultaneously. As the pitches converge, the beats will slow down and eventually disappear, indicating that the notes are in tune.In conclusion, the concept of beat frequency is a fascinating intersection of physics, music, and technology. It illustrates the beauty of sound and its profound impact on our lives. Whether through the harmonious blending of musical notes or the innovative applications in communication technology, beat frequency serves as a reminder of the intricate connections between different fields of study. By exploring this phenomenon, we not only enrich our understanding of sound but also appreciate the creativity and science that shape our auditory experiences.

在物理学和音乐领域，术语拍频指的是当两种频率略有不同的声波相互干扰时发生的现象。这种干扰产生了一种新的波形，导致振幅的波动，从而产生一种脉动的声音效果，既引人入胜又迷人。理解拍频不仅加深了我们对声音的欣赏，还增强了我们对技术和艺术中各种应用的知识。为了说明这一概念，可以考虑两个音叉：一个以440赫兹（标准A音的音高）振动，另一个以442赫兹振动。当同时敲击这两个音叉时，听众会听到在规律的间隔内，声音波相互结合和相互抵消所产生的一系列节拍。在这种情况下，拍频是通过计算两个频率之间的差异得出的，即2赫兹。这意味着听众每秒感知到音量的波动两次，创造出丰富的听觉体验。拍频现象并不仅限于乐器；它在各种技术应用中也发挥着至关重要的作用。例如，在广播中，混合信号时利用了拍频原理。当两种不同频率的无线电波相交时，它们会产生一个新的信号，其频率为拍频，接收器可以调谐到这个信号。这项技术使现代通信成为可能，从而允许复杂信息在长距离上传输。此外，拍频的概念不仅限于声波，还包括其他形式的波，例如光。在光学中，当两种频率略有不同的光波重叠时，它们可以产生类似的干涉图案，导致亮度的变化，被称为条纹。这一原理在包括量子力学和激光技术等多个科学领域中是必不可少的。在音乐世界中，作曲家和音乐家常常利用拍频的效果来创造独特的声音景观。通过叠加不同的音调和音高，他们可以产生丰富的声音织锦，唤起情感并增强听觉体验。例如，在氛围音乐等流派中，艺术家可能故意使用拍频来在他们的作品中创造一种运动感和深度感，吸引听众进入更具沉浸感的听觉环境。理解拍频也具有实际意义，尤其是在调音乐器时。音乐家常常利用这一概念来确保他们的乐器和谐。在调音时，音乐家可能会倾听同时演奏的两个音符所产生的拍频。随着音高的接近，节拍将减慢并最终消失，表明音符已调准。总之，拍频的概念是物理学、音乐和技术的迷人交汇点。它展示了声音的美丽及其对我们生活的深远影响。无论是通过和谐的音乐音符混合，还是在通信技术中的创新应用，拍频都提醒我们不同研究领域之间的复杂联系。通过探索这一现象，我们不仅丰富了对声音的理解，还欣赏塑造我们听觉体验的创造力和科学。