[AK4679]
Noise Suppression
Threshold Low Level [dB]
NSTHL4-0 bits
Step
00H
01H
02H
:
10H
:
(default)
−36.0
−37.5
−39.0
:
−60.0
:
1.5dB
1EH
1FH
−81.0
−82.5
Table 43. Noise Suppression Threshold Low Level
NSREF3-0 bits
GAIN [dB]
Step
0H
1H
2H
:
(default)
−9
−12
−15
:
AH
BH
CH
DH
EH
FH
−39
−42
−45
−48
−51
−54
3dB
Table 44. Reference Value Setting when Noise Suppression is ON
NSATT2 NSATT1 NSATT0
ATT Speed
16kHz
bit
bit
bit
8kHz
44.1kHz
5.8dB/s
11.7dB/s
23.4dB/s
46.8dB/s
93.5dB/s
187.1dB/s
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1.1dB/s
2.1dB/s
4.2dB/s
8.5dB/s
17.0dB/s
33.9dB/s
2.1dB/s
4.2dB/s
8.5dB/s
17.0dB/s
33.9dB/s
67.9dB/s
(default)
N/A
Table 45. Noise Suppression ATT Speed Setting (N/A: Not available)
MS1402-E-06
2013/02
- 86 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
