Objective to probe into the effects of military noise on the hearing threshold of the speech frequency and high frequency in the elders.

目的探讨军事噪声对老年人言语频率及高频听力的影响。

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Based on the equal-loudness curve, a speech frequency equalizer is designed combing with the principle of electronic-to-sound transform.

以人耳等响曲线为依据，结合电声转换的原理，设计了一种语音频率均衡电路。

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There was no significant difference between the groups who had high frequency or speech frequency hearing loss in annum and working ages.

高频及语频听力损失率在各年份及各工龄组间差异无统计学意义。

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For a more enjoyable calling experience it also uses age-specific frequency adjustment and real-time speech slowing to help make calls crystal clear.

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Though these changes can go unnoticed by a person with a disease, relatives and friends more often pick up on it, but a computer algorithm that detects nuances of speech and subtle changes could detect abberations with much greater frequency.

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If you were to look at a waveform where you see how speech gets louder and quieter across time, the time between those peaks happens at a fairly predictable frequency of 3Hz to 8Hz across different languages.

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