JOPLIN
384
k
H
z
/32bit ANALOG-TO-DIGITAL CONVERTER
REVISION P
R
A – SEPTEMBER 2012
Copyright © 2012, M2Tech Srl
32
M2Tech
www.m2tech.biz
Eq comparison
0
10
20
30
40
50
60
70
80
10
12
,5
16
20
25
31
,5
40
50
63
80 10
0
12
5
16
0
20
0
25
0
31
5
40
0
50
0
63
0
80
0
10
00
12
50
16
00
20
00
25
00
31
25
40
00
50
00
63
00
80
00
10
00
0
12
50
0
16
00
0
20
00
0
Hz
d
B
RIAA
FFRR
Capitol
Columbia
HMV
RCA
Figure 23
To better understand the effect of using the wrong equalization curve to play a record,
Figure 24 shows the relative level versus frequency of the music on a Decca FFRR record
when it is played through a RIAA phono input of a modern amplifier.
Equalization of the signal of a Decca FFRR record being amplified by a RIAA phono
stage
-3
-2
-1
0
1
2
3
4
5
6
7
10
12
,5
16
20
25
31
,5
40
50
63
80 10
0
12
5
16
0
20
0
25
0
31
5
40
0
50
0
63
0
80
0
10
00
12
50
16
00
20
00
25
00
31
25
40
00
50
00
63
00
80
00
10
00
0
12
50
0
16
00
0
20
00
0
Hz
d
B
Figure 24
