专利内容由知识产权出版社提供
专利名称：Image forming apparatus and method of
evaluating sound quality on image formingapparatus
发明人：Koichi Tsunoda,Satoshi Kanda申请号：US100262申请日：20011227
公开号：US20020150258A1公开日：20021017
专利附图：
摘要：A discomfort index, S, is calculated with an equation, S=0.3135×(Loudnessvalue)+3.4824×(Tonality value)−3.1460. This equation uses a loudness value and a
tonality value, both psychoacoustic parameters obtained from a sound from the imageforming apparatus at a location 1.00 m±0.03 m apart from an end of the image formingapparatus. A sound caused at the time of charging an image carrier is improved so thatthe discomfort index S satisfies S<−0.5.
申请人：TSUNODA KOICHI,KANDA SATOSHI
更多信息请下载全文后查看
