參數(shù)資料
型號: MSM7731-01
廠商: OKI SEMICONDUCTOR CO., LTD.
元件分類: Codec
英文描述: Multifunction PCM CODEC (Voice Signal Processor)
中文描述: 多功能的PCM編解碼器(語音信號處理器)
文件頁數(shù): 23/43頁
文件大小: 247K
代理商: MSM7731-01
23/43
Semiconductor
MSM7731-01
Rin input level vs. echo attenuation
(Measuring conditions)
Rin signal
E.R.L
Delay time
ATT, GC
Noise floor
: 5 kHz band white noise
: –6dB
: 4ms
: OFF
: –60dBm (P-message filter unused)
–50
–45
–40
–35
Rin input level [dBm]
–30
–25
–20
–15
–10
0
5
10
15
20
25
30
35
40
45
RIN input level vs. echo attenuation
E
E.R.L. level vs. echo attenuation (with GLPAD)
(Measuring conditions)
Rin signal
Rin input level : –20dBm (with GLPAD=
±
0dB)
: –26dBm (with GLPAD=
±
6dB)
: –32dBm (with GLPAD=
±
12dB)
: –38dBm (with GLPAD=
±
18dB)
Delay time
: 4ms
ATT, GC
: OFF
Noise floor
: –60dBm (P-message filter unused)
: 5 kHz band white noise
–40
25
0
5
10
15
20
25
30
35
40
45
E.R.L. [dB]
E.R.L vs. echo attenuation (with GLPAD)
E
–35
–30
–25
–20
–15
–10
–5
0
5
10
15
20
GLPAD=±0dB
GLPAD=±6dB
GLPAD=±12dB
GLPAD=±18dB
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