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| Frequency response of loudspeakers by measuring theinduced e.m.f | |
| 摘 要： | 1IntroductionTheperformanceofadirectradiatorloudspeakerisdirectIyrelatedtothediaphragmdis-placement.AccuratemeasurementoftIlefreqllenc,responseoftheloudspeakerbydifferentmethodsreqlliresananechoicchamberandacalibratednlicrophone.AI1echoicchambersoper-atingdowntorequiredlowfrequenciesareveryexpensive,a11dopenspacesareinconvenient.ThemethodsuggestedbyK.elel]isbasedonthefactthat,withsomerestrictions,thefarfieldfrequencyresponseofthespeakerissimilartothatofitsnearfieldresponse.Sincethereflected… |
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