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1CH14

2214.1 314.1.1 4

55

66

7

8

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Simens10

(YouTube) 1114.1.2 12

(YouTube)Karajan - Beethoven Symphony No. 5 in C minor Part 11313?01

1414?(sampling)() (Sampling Rate)

1515(Nyquist sampling theorem)

16

20KHz40KHz44.1KHz/s()

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CD44.1KHzCD44.1KHzCD013049030*490*3=44100CD18

CD44.1KHzCD44.1KHzSonyPhilips434744.1KHz74mins19

?(Quantization)xy(Quantization Error)xy

2020?

(a) (b) 2121CD audioDAT(KHz)44.148(bits)161622

22CD44100Hz16bitsCD audio =44100(44.1KHz)2(16 bits)2()60() =10584000(Bytes)10MB

23La()()

2414.1.3 (Mono)(Stereo)5.1

25(Mono)

26(Stereo)1950

271950

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Karajan 1963 - Beethoven Symphony No. 5 in C minor First movement: Allegro con brio(40)

8000Hz8000Hz

44100Hz44100Hz

29Karajan 1963 - Beethoven Symphony No. 5 in C minor First movement: Allegro con brio(mp3)8000Hz1.17MB8000Hz2.32MB44100Hz4.89MB44100Hz9.64MB305.15.1

http://shopping.udn.com315.1AC-3(Dolby Digital)DTS5 80Hz.1 20120Hz

http://hardware.mydrivers.com325.15.17.15.15.1

http://premiersupport.dell.com/support/edocs/systems/xlob/mmd/ct/setup_7_1audio.htm3314.1.4 34WaveMIDIMP3WaveWindowsWindows .wav

35WaveMIDIMP3MIDIMusical Instrument Digital Interface .midMIDIMIDI

http://iwritethemusic.com/midi.html36WaveMIDIMP3MP3MPEG Audio Layer 3MPEG I(VCD)WaveWaveWave50MBMP35MB

37MP3APEFLACFree Lossless Audio Codec38AUUnix .auUnixRARealNetworks .raRealNetworksrm rmvb

RealNetworks.com3939AIFFAudio Interchange File FormatWave

www.apple.com404014.1.5 4144.1KHz22.05KHz11.025KHz8KHz()()(16bits 8bits)

4210.6MB44.1KHz16bits5.29MB11KHz0.66MBMp3Wave(8 bits)(16 bits)11.025 KHz0.66MB1.32MB1.32MB2.65MB22.05 KHz1.32MB2.65MB2.65MB5.29MB44.1KHz2.65MB5.29MB5.29MB10.6MB4314.2 44(GoldWave)

45GoldWave

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(Smooth)47

(Echo)48