HP provides such data in various sources. HP provides self-declared environmental claims in IT ECO Declarations and acoustic emissions data can often also be found on merchandising literature (such as Datasheet, QuickSpecs, etc.).
For printers we provide Blue Angel User Information documents available for Blue Angel certified HP printing systems. These documents contain detailed noise emissions information.
IT Eco Declarations are available at http://h22235.www2.hp.com/hpinfo/globalcitizenship/environment/productdata/itecodesktop-pc.html, Please use the dropdown menu to navigate between product categories.
Blue Angel User Information documents are available at https://h22235.www2.hp.com/hpinfo/globalcitizenship/environment/productdata/lpblueangeluseng.html.