TitleSelf-driven noise-free recording keyboard instrument
Authors张海霞
韩梦迪
邱国林
彭旭华
刘雯
程晓亮
孟博
朱福运
Affiliation北京大学
Issue Date2014
Citation2014.
AbstractAbstract:Aself-drivennoise-freerecordingkeyboardinstrumentcomprisesakeyboard,aliquidcrystaldisplayscreen,r-typecombinedtypegenerators,rectifierbridges,measurementequipmentandcomputersoftware.Thelowerportionsofwhitekeysofinstrumentkeyscorrespondtother-typecombinedtypegeneratorsrespectively,piezoelectricmodulesofthegeneratorsareinoutputconnectionwiththerectifierbridges,andtherectifierbridgesareinoutputconnectionwiththeliquidcrystaldisplayscreen.Frictionmodulesofthegeneratorsareinoutputconnectionwiththemeasurementequipment.Electricsignalsrecordedbythemeasurementequipmentareoutputtothecomputersoftware.Whentheinstrumentkeysarepresseddown,thepiezoelectricmodulesaredeformed,electricenergyisgeneratedtodrivethecorrespondingliquidcrystaldisplayscreen,andthekeytoneindicatingfunctionisachieved.Whenmusicisplayed,thefrictionmodulesaredeformed,themeasurementequipmentcanrecordelectricsignalsgeneratedbythefrictionmodules,thecomputersoftwareconvertstheelectricsignalsintodigitalsounds,theplayedmusicisconvertedintodigitalmusicinformation,andtherecordingeffectisachieved.Whenthekeyboardinstrumentisappliedtorecording,onlythesoundsgeneratedwhentheinstrumentkeysarepresseddownarerecorded,othersoundscannotberecorded,andthereforenoise-freerecordingisachieved.
URIhttp://hdl.handle.net/20.500.11897/531647
Appears in Collections:专利

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