음질 비교 (mp3, CD, SACD, LP)

org :  http://www.enjoythemusic.com/magazine/manufacture/0909/

Fidelity Potential Index (FPI) Table








The Formats Analog or Digital Dynamic Range Frequency Response Equivalent Sampling Rate (Hz) Equivalent Bits Bits per Second Fidelity Potential Index
Wax Cylinders analog 20dB
30dB
160 - 3kHz
160 - 3kHz
6,000
6,000
3.3
5
20,000
30,000
0.2
0.3
AM Radio analog 48dB 50 - 6kHz 12000 8 96000 1
Shellac 78 analog 30dB
40dB
60 - 7kHz
60 - 7kHz
14,000
14,000
5
6.7
70,000
93,800
0.7
0.9
78 rpm Record analog 40dB 40 - 11kHz 22000 6.7 147400 1.5
FM Radio analog 70dB 40 - 15kHz 30000 11.7 351000 3.5
45 rpm Record analog 45dB 40 - 11kHz 22000 7.5 165000 1.7
The Vinyl LP 33rpm analog 50dB
65dB
75dB
30 - 25kHz
30 - 25kHz
30 - 25kHz
50,000
50,000
50,000
8.3
10.8
12.5
415,000
540,000
625,000
4.2
5.4
6.3
Reel to Reel Tape Recorder analog 60dB
70dB
20 - 18kHz
20 - 50kHz
36,000
100,000
10
11.7
360,000
1,170,000
3.6
11.7
Cassette Tape Recorder analog 45dB
70dB
40 - 15kHz
40 - 15kHz
30,000
30,000
7.5
11.7
225,000
351,000
2.3
3.5
8 Track Tape analog 45dB 40 - 8kHz 16000 7.5 120000 1.2
The CD Compact Disc digital     44100 16 705600 7.1
DTS digital     96000 24 2304000 23
Dolby Digital digital            
SACD digital         3500000 35
DVD-Audio digital     88,000
96,000
96,000
192,000
16
20
24
24
1,408,000
1,920,000
2,304,000
4,608,000
14.1
19.2
23.0
46.1
Dolby True HD digital     192000 24 4608000 46.1
Satellite Radio (mp3) digital            
iPod (mp3) 16 kbs 320 kbs digital         16,000
320,000
0.2
3.2
wave files
16bit, 32k
23, 44.1k
24, 96k
digital     32,000
44,100
96,000
16
24
24
512,000
1,058,000
2,304,000
5.1
10.6
23.0


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