ISO 7779:2010 specifies procedures for measuring and reporting the noise emission of information technology and telecommunications equipment.<\/p>\n
The basic emission quantity is the A-weighted sound power level which may be used for comparing equipment of the same type but from different manufacturers, or for comparing different equipment.<\/p>\n
Three basic noise emission standards for determination of the sound power levels are specified in ISO 7779:2010 in order to avoid undue restriction on existing facilities and experience. ISO 3741 specifies comparison measurements in a reverberation test room; ISO 3744 and ISO 3745 specify measurements in an essentially free field over a reflecting plane. Any one of these three basic noise emission standards can be selected and used exclusively in accordance with ISO 7779:2010 when determining sound power levels of a machine.<\/p>\n
The A-weighted sound power level is supplemented by the A-weighted emission sound pressure level determined at the operator position(s) or the bystander positions, based on basic noise emission standard ISO 11201. This sound pressure level is not a worker's immission rating level, but it can assist in identifying any potential problems that could cause annoyance, activity interference, or hearing damage to operators and bystanders.<\/p>\n
Methods for determination of whether the noise emission includes prominent discrete tones or is impulsive in character are specified in annexes.<\/p>\n
ISO 7779:2010 is suitable for type tests and provides methods for manufacturers and testing laboratories to obtain comparable results.<\/p>\n
The methods specified in ISO 7779:2010 allow the determination of noise emission levels for a functional unit tested individually.<\/p>\n
The procedures apply to equipment which emits broadband noise, narrowband noise and noise which contains discrete-frequency components, or impulsive noise.<\/p>\n
The sound power and emission sound pressure levels obtained can serve noise emission declaration and comparison purposes (see ISO 9296).<\/p>\n
If sound power levels obtained are determined for a number of functional units of the same production series, they can be used to determine a statistical value for that production series (see ISO 9296).<\/p>\n","protected":false},"excerpt":{"rendered":"
Acoustics \u2014 Measurement of airborne noise emitted by information technology and telecommunications equipment<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ISO<\/b><\/a><\/td>\n 2010-08<\/td>\n 70<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":624863,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[268,655,2634],"product_tag":[],"class_list":{"0":"post-624850","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-140-20","7":"product_cat-35-020","8":"product_cat-iso","10":"first","11":"instock","12":"sold-individually","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/624850","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/624863"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=624850"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=624850"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=624850"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}