參數(shù)資料
型號: TECO3264
廠商: Lineage Power
英文描述: 32-Channel Echo Canceller(32通道回波清除器)
中文描述: 32通道回聲消除器(32通道回波清除器)
文件頁數(shù): 36/128頁
文件大?。?/td> 2328K
代理商: TECO3264
Data Sheet
August 1999
TECO3264 32-Channel Echo Canceller
36
Lucent Technologies Inc.
Parameters
(continued)
Mask Bits
(continued)
Echo Canceller (EC) Parameters
Table 13 shows the EC parameters which are generally static in nature.
Table 12. Mask Parameters
(continued)
Symbol
Description
Memory Map
Starting Address (Hex)
0x23
MHRSTEXT Mask for HRST control of H reset.
1 = allow control; 0 = mask.
MHERR
Mask for error condition reset of H register.
1 = allow reset; 0 = mask.
MEYRST
Mask for > y control of H-register reset.
1 = allow reset; 0 = mask.
MNBE
Mask for narrowband energy (NBE) control of H freeze.
1 = allow control; 0 = mask.
MHFRZEXT Mask for HFRZ external pin control of H reset.
1 = allow control; 0 = mask.
MFES
Mask for FES component of mask-freeze control of H freeze.
Note:
0 = include FES; 1 = do not include FES.
MNES1
Mask for NES1 component of mask-freeze control of H freeze.
Note:
0 = include NES1; 1 = do not include NES1.
MNES3
Mask for NES3 component of mask-freeze control of H freeze.
Note:
0 = include NES3; 1 = do not include NES3.
0x23
0x23
0x23
0x23
0x23
0x23
0x23
Table 13. EC Parameters
Symbol
Description
Memory Map
Starting Address (Hex)
LEAK[7:0]
LFREQ[1:0]
XHPFEN
YHPFEN
FESTH[12:0]
NBEPKF[7:0]
WBEPKF[7:0] Wideband energy peak factor
HZETA[7:0]
E and Y EMP gain filter constant
HGAMMA[7:0] E and Y EMP filter time constant
H-register leak rate during adaptation
H-register leak application rate
X high-pass filter enable
Y high-pass filter enable
Far-end speech threshold
Narrowband energy peak factor
0x24
0x25
0x25
0x25
0x26
0x28
0x29
0x39
0x68
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