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Jinghao听力助听器科普:什么是赫兹?

Jinghao听力助听器专家说,接触助听器的人们经常听到一个叫”赫兹”的单位。什么是”赫兹”呢?

  

One hertz

The number of times the vibration is completed per unit time is called the frequency. The unit of frequency is Hertz, and the vibration of 1 seconds is called 1 Hertz (Hz).

Sound can be quantified in both time and space. Quantification from the perspective of time refers to the cycle and frequency. Quantitatively in terms of space, mainly refers to amplitude and wavelength.

The time required to periodically vibrate once is the reciprocal of the frequency, usually in milliseconds (ms). For example, a pure tone with a frequency of 1000 Hertz, the period is 1 milliseconds.

  Jinghao听力助听器专家说,通常人类谈话声的频率范围在500~3000赫兹之间。纯音、复合音和语音的区别也在于频率之不同。纯音系指单一频率的声音,常用于听力测试。语音即人们日常的谈话声。复合音乐和噪声皆是,它们都含有多种频率成分。

Link:Jinghao听力助听器科普:什么是赫兹?

REF: Hearing AidsHearing LossHearing Aids Types
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