According the passage one of the ways in whic
问题详情
According the passage, one of the ways in which analog recording systems differ from digital recording systems is that analog systems______
A．can be used to reduce background noise in old recordings
B．record the original sound as a continuous waveform
C．distort the original sound somewhat
D．can avoid introducing extraneous and nonmusical sounds
E．can reconstruct the original waveform. with little loss inquality请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：Thisquestionasksyoutoidentifysomethingmentionedspecificallyinthepassagethatisafeatureofanalogrecordingsystemsthatisnotsharedbydigitalrecordingsystems.ChoiceBisthebestanswer.Thepassagestatesinlines10-13thatanalogrecordingsystemsrepresenttheoriginalsoundasacontinuouswaveform,whileinlines21-23itnotesthatdigitalrecordingsreducetheoriginalsoundtoaseriesofdiscretenumbers.NeitherA,D,orEarefeaturesofanalogsystems,accordingtothepassage.ChoiceCisnotcorrect:whilethepassagedoessaythatanalogrecordingsystemsdistorttheoriginalsound,thepassagealsonotesthat“itisimpossiblefordigitalsystemstoavoidsomedistortion”(lines31-32).Thussomeamountofsounddistortionisinvolvedinbothanaloganddigitalrecordingprocesses.
