음질 비교 (mp3, CD, SACD, LP)

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