msm7731-01 Oki Semiconductor, msm7731-01 Datasheet - Page 24

• Manufacturer Part Number: msm7731-01
• Description: Multifunction Pcm Codec Voice Signal Processor
• Manufacturer: Oki Semiconductor

¡ Semiconductor
Echo delay time vs. echo attenuation (Dual echo canceler mode/acoustic side)
(Measuring conditions) Rin signal
Echo delay time vs. echo attenuation (Dual echo canceler mode/line side)
(Measuring conditions) Rin signal
45
40
35
30
25
20
15
10
45
40
35
30
25
20
15
10
5
0
5
0
5
5
10
10
Rin input level : –16dBm
E.R.L
ATT, GC
Noise floor
Rin input level : –16dBm
E.R.L
ATT, GC
Noise floor
15
15
20
20
Dual echo canceler mode (acoustic side)
Echo delay time vs. echo attenuation
Echo delay time vs. echo attenuation
Dual echo canceler mode (line side)
25
25
Echo delay time [ms]
Echo delay time [ms]
: 5 kHz band white noise
: –6dB
: OFF
: –60dBm (P-message filter unused)
: 5 kHz band white noise
: –6dB
: OFF
: –60dBm (P-message filter unused)
30
30
35
35
40
40
45
45
50
50
55
55
MSM7731-01
60
60
24/43