为临床言语测试等目的，人为对白噪声进行特殊的滤波处理而获得的噪声信号，其在250~1kHz间为等能量，而在1~6kHz间每倍频程递减12dB。
目的探讨军事噪声对老年人言语频率及高频听力的影响。
Objective to probe into the effects of military noise on the hearing threshold of the speech frequency and high frequency in the elders.
一般的助听器会放大所有的声音—言语声、背景噪声和钟声等。
Conventional hearing devices amplify everything-from conversations to background noise to the clock ticking.
儿童正在能说或能听懂言语之前，久久就会穿过面部神采和靠雄布噪声来与人相同了。
Long before children are able to speak or understand a language, they communicate through facial expressions and by noises.
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