fundamental frequency

简明释义

基频

英英释义

例句

1.When analyzing sound waves, the fundamental frequency helps identify the source of the sound.

在分析声波时，基频有助于识别声音的来源。

2.In speech analysis, the fundamental frequency can indicate the speaker's emotional state.

在语音分析中，基频可以指示说话者的情绪状态。

3.The fundamental frequency is crucial in the design of musical synthesizers.

在音乐合成器的设计中，基频至关重要。

4.Musicians often adjust their instruments to match the fundamental frequency of a reference tone.

音乐家常常调整乐器以匹配参考音的基频。

5.The fundamental frequency of a vibrating string determines its pitch.

振动弦的基频决定了它的音高。

作文

The concept of fundamental frequency is a cornerstone in the field of acoustics and signal processing. It refers to the lowest frequency of a periodic waveform, which is crucial in understanding how sound is produced and perceived. In music, for example, when a musician plays a note on an instrument, the fundamental frequency determines the pitch of that note. This frequency is essential for tuning instruments and creating harmonious sounds. To delve deeper, let’s consider how the fundamental frequency interacts with other frequencies. When a sound is produced, it doesn’t just consist of a single frequency; rather, it comprises a series of overtones or harmonics. The fundamental frequency is the first harmonic, while the additional frequencies are integer multiples of this base frequency. For instance, if the fundamental frequency of a string instrument is 440 Hz, the next harmonics would be 880 Hz, 1320 Hz, and so on. This relationship creates a rich tapestry of sound that can evoke various emotions and responses from listeners.In the realm of speech, the fundamental frequency plays a vital role as well. Each person has a unique voice, characterized by a specific fundamental frequency. This frequency can vary based on factors such as age, gender, and even emotional state. For instance, a child typically has a higher fundamental frequency than an adult, which contributes to the perception of youthfulness in their voice. Understanding these variations is essential in fields like linguistics and speech therapy, where professionals analyze voice patterns to assist individuals with speech impairments.Moreover, the fundamental frequency is not limited to human-made sounds. In nature, animals also produce sounds with distinct fundamental frequencies. For example, the song of a bird or the call of a whale can be analyzed to determine their fundamental frequency, which can provide insights into their behavior and communication methods. Researchers often use these frequencies to study animal populations and their interactions within ecosystems.In technology, the fundamental frequency is crucial in various applications, including telecommunications and audio engineering. Engineers use this concept to design equipment that can accurately capture and reproduce sound. For instance, when recording music, sound engineers must pay attention to the fundamental frequency to ensure that the final product maintains the integrity of the original performance. Additionally, in the field of digital signal processing, algorithms are developed to isolate and manipulate the fundamental frequency for various purposes, such as noise reduction and sound enhancement.In conclusion, the fundamental frequency is a multifaceted concept that spans across various disciplines, from music and speech to biology and technology. Its significance cannot be overstated, as it serves as the foundation for understanding sound and its myriad forms. By comprehending the fundamental frequency, we gain valuable insights into the world around us, enhancing our appreciation for both the art of sound and the science behind it.

“基频”这一概念是声学和信号处理领域的基石。它指的是周期波形的最低频率，这对于理解声音的产生和感知至关重要。例如，在音乐中，当音乐家在乐器上演奏一个音符时，基频决定了该音符的音高。这个频率对于调音和创造和谐的声音是必不可少的。更深入地探讨一下，基频与其他频率的相互作用。当声音被产生时，它不仅仅由单一频率组成；而是由一系列的泛音或谐波组成。基频是第一个谐波，而附加频率则是这个基频的整数倍。例如，如果一个弦乐器的基频是440 Hz，那么下一个谐波将是880 Hz、1320 Hz，依此类推。这种关系创造出丰富的声音织锦，可以激发听众的各种情感和反应。在言语领域，基频也扮演着至关重要的角色。每个人都有独特的声音，其特征由特定的基频决定。这个频率可以根据年龄、性别甚至情绪状态的不同而变化。例如，儿童通常具有比成年人更高的基频，这使他们的声音显得更加年轻。理解这些变化对于语言学和言语治疗等领域至关重要，专业人士分析声音模式以帮助有言语障碍的人。此外，基频并不仅限于人造声音。在自然界中，动物也会产生具有明显基频的声音。例如，鸟的歌声或鲸鱼的叫声可以被分析以确定它们的基频，这可以提供关于它们行为和交流方式的见解。研究人员经常使用这些频率来研究动物种群及其在生态系统中的相互作用。在技术领域，基频在各种应用中也至关重要，包括电信和音频工程。工程师利用这一概念设计能够准确捕捉和重现声音的设备。例如，在录制音乐时，声音工程师必须关注基频，以确保最终产品保持原始表演的完整性。此外，在数字信号处理领域，开发了算法来隔离和操作基频以实现各种目的，例如降噪和声音增强。总之，基频是一个跨越多个学科的多面概念，从音乐和言语到生物学和技术。它的重要性不容小觑，因为它作为理解声音及其多种形式的基础。通过理解基频，我们获得了对周围世界的宝贵洞察，增强了我们对声音艺术及其背后科学的欣赏。