[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fpq3hHdtuVtL8X4fdYx8HO3BZuz-m3sYZC3R2xRVsC6U":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":28,"type":29},[],"2023-12-16 11:34:03",114528049,[8,9,10,11],"数字编码器","数字解码器","模拟到数字的转换器(A\u002FD转换器)","数字到模拟的转换器(D\u002FA转换器)",{"courseId":13,"courseImg":14,"courseName":15},"c5701df20052544a061e92cc769d29af","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9133a3f8a987e323c225ee8f2d3dcdf0.jpg","信息技术","音频数字化过程中采样和量化所用到的主要硬件是( )",[18,30,37,46,55,64,73,76,85,94],{"answer":19,"createTime":20,"id":21,"options":22,"question":27,"source":28,"type":29},[],"2023-12-16 11:34:02",114528038,[23,24,25,26],"Winamp","GoldWave","Media Player","RealPlayer","视频处理1【单选题】下面多媒体播放软件中,( )是由Windows7操作系统自带的","v1",0,{"answer":31,"createTime":20,"id":32,"options":33,"question":36,"source":28,"type":29},[],114528040,[8,9,34,35],"模拟到数字转换器(A\u002FD转换器)","数字到模拟转换器(D\u002FA转换器)","数字音频采样和量化过程所用的主要硬件是( )",{"answer":38,"createTime":20,"id":39,"options":40,"question":45,"source":28,"type":29},[],114528042,[41,42,43,44],"越小","越大","不变","无法确定","对声音波形采样时,采样频率越高,声音文件的数据量( )",{"answer":47,"createTime":5,"id":48,"options":49,"question":54,"source":28,"type":29},[],114528045,[50,51,52,53],"量化位数越少,采样率越高","量化位数越多,采样率越高","量化位数越少,采样率越低","量化位数越多,采样率越低","一般来说,数字化声音的质量越高,则要求( )",{"answer":56,"createTime":5,"id":57,"options":58,"question":63,"source":28,"type":29},[],114528046,[59,60,61,62],"40K","40M","24K","24M","若对音频信号以20kHz采样率,16位量化精度进行数字化,则每秒钟的单声道数字化声音信号产生的数据量约为( )",{"answer":65,"createTime":5,"id":66,"options":67,"question":72,"source":28,"type":29},[],114528047,[68,69,70,71],"采样&rarr;编码&rarr;量化","量化&rarr;编码&rarr;采样","编码&rarr;采样&rarr;量化","采样&rarr;量化&rarr;编码","将模拟声音信号转变为数字音频信号的声音数字化过程是( )",{"answer":74,"createTime":5,"id":6,"options":75,"question":16,"source":28,"type":29},[],[8,9,10,11],{"answer":77,"createTime":5,"id":78,"options":79,"question":84,"source":28,"type":29},[],114528050,[80,81,82,83],"音频质量、数据量、音频特性","音频质量、计算复杂度、数据量","计算复杂度、数据重、音频特性","音频质量、计算复杂度、数据量、音频特性","人们在实施音频数据压缩时,通常应综合考虑的因素有( )",{"answer":86,"createTime":5,"id":87,"options":88,"question":93,"source":28,"type":29},[],114528051,[89,90,91,92],"振幅","周期","频率","频带","声波重复出现的时间间隔是( )",{"answer":95,"createTime":5,"id":96,"options":97,"question":102,"source":28,"type":29},[],114528052,[98,99,100,101],"MP3","MPEG-1","WMA","MPEG-2","将音乐以1:10甚至1:12的压缩率压缩成较小文件"]