MSM7731-02 OKI [OKI electronic componets], MSM7731-02 Datasheet - Page 24

• Manufacturer Part Number: MSM7731-02
• Description: Dual Echo Canceler & Noise Canceler with Dual Codec for Hands-Free
• Manufacturer: OKI [OKI electronic componets]

Echo delay time vs. echo attenuation (Single echo canceler mode)
(Measuring Condition)
Slope filter frequency characteristic (with CODEC filter frequency characteristic)
(Measuring Condition)
1 Semiconductor
45
40
35
30
25
20
15
10
-10
-40
-60
-20
-30
-50
5
0
10
0
5
1
10
501
15
Rin signal
Rin input level
E.R.L
ATT, GC
Noise floor
Rin input level
Noise floor
Echo delay time vs. echo attenuation
Slope filter frequency characteristic
1001
20
Single echo canceler mode
Echo delay time [ms]
25
1501
Frequency [ms]
30
: 5 kHz band white noise
: –16 dBm
: –6 dB
: OFF
: –60 dBm (P-message filter unused)
: –16 dBm
: –60 dBm (P-message filter unused)
2001
35
2501
40
45
3001
50
3501
55
60
FEDL7731-02-04
MSM7731-02
24/53