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现行 KS I ISO 9295-2019
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음향 — 기계와 장비에서 방사되는 고주파 음향파워레벨 결정 声学 - 机械设备发射的高频声功率级的测定
发布日期: 2019-10-28
该标准规定了4种测量信息技术装置辐射高频噪声声功率级的方法。测量对象频率范围是以16kHz为中心的倍频带。这些方法完善了KS I ISO 7779的6节或7节的方法。最初的3种方法是根据KS I ISO 7779第6节规定的混响室法,第4种方法是利用KS I ISO 7779第7节规定的反射面上自由声场。
이 표준에서는 정보기술장치에서 방사되는 고주파 소음의 음향파워레벨을 측정할 수 있는 4가지 방법을 규정한다. 측정 대상 주파수 범위는 16 kHz를 중심으로 하는 옥타브 대역이다. 이 방법 들은KS I ISO 7779의 6절 또는 7절의 방법을 보완하고 있다. 처음의 3가지 방법은 KS I ISO 7779의 6절에 규정되어 있는 잔향실법에 근거하고 있으며, 4번째 방법은 KS I ISO 7779의 7절에 규정되어 있는 반사면상 자유음장을 이용하고 있다.
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发布单位或类别: 韩国-韩国标准
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