參數(shù)資料
型號(hào)： CXD2720Q
廠商： Sony Corporation
元件分類： 數(shù)字信號(hào)處理
英文描述： Single-Chip Digital Signal Processor for Karaoke(卡拉OK單片數(shù)字信號(hào)處理器)
中文描述： 單芯片數(shù)字信號(hào)處理器的卡拉OK（卡拉OK單片數(shù)字信號(hào)處理器）
文件頁(yè)數(shù)： 32/40頁(yè)
文件大?。?/td> 431K
代理商： CXD2720Q
– 32 –
CXD2720Q
12. Input/Output Level Settings
[Relevant coefficients] Ki (address = 00H), KisLm (address = 05H), KisRc (address = 06H),
KiaLm (address = 07H), KiaRc (address = 08H), KisRm (address = 09H),
KisLc (address = 0AH), KiaRm (address = 0BH), KiaLc (address = 0CH),
Kimc (address = 31H), Kdry (address = 3CH), Keff (address = 3DH),
KLm (address = 3EH), KRm (address = 3FH), KLo (address = 40H),
KRo (address = 42H), Kre (address = 45H), Krd (address = 49H),
Kfb (address = 4AH), Krmc (address = 5AH), Krmp (address = 5BH)
The input/output levels and volumes are 2’s complement format with a decimal point between D15 and D14,
and hexadecimal notation with D15 as MSB and D0 as LSB.
The coefficient and level relationships are as follows.
D15 to D0
8000H
↓
FFFFH
0000H
0dB
↓
–90.31dB
–
∞
Level
D15 to D0
8000H
↓
FFFFH
0000H
+12.04dB
↓
–78.27dB
–
∞
Level
Table 12-1. Input/Output Level Settings
(other than Kre)
Table 12-2. Input/Output Level Settings
(Kre)
The input/output levels for 8001H to FFFEH are determined by the following formulas.
14
(Coefficient value) = [ (–1)
×
D15 +
∑
Dn
×
2
n–15
]
×
(–1) for other than Kre
n = 0
14
(Coefficient value) = [ (–1)
×
D15 +
∑
Dn
×
2
n–15
]
×
(–4) for Kre
n = 0
Input/output level = 20 log [coefficient value] dB
D15 to D0 are negative values, but the calculation is (–1)
×
(D15 to D0).
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