參數(shù)資料
型號: AK4665AEN
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, QCC32
封裝: 5 X 5 MM, 0.50 MM PITCH, LEAD FREE, QFN-32
文件頁數(shù): 19/52頁
文件大小: 522K
代理商: AK4665AEN
ASAHI KASEI
[AK4665A]
MS0440-E-01
2006/05
- 26 -
De-emphasis Filter (DEM)
The AK4665A includes a digital de-emphasis filter (tc = 50/15
s) by IIR filter corresponding to three sampling
frequencies (32kHz, 44.1kHz and 48kHz). The de-emphasis filter is enabled by setting DEM1-0 bits (Table 21).
DEM1
DEM0
De-emphasis
0
44.1kHz
0
1
OFF
Default
1
0
48kHz
1
32kHz
Table 21. De-emphasis Control
Bass Boost Function (BOOST)
By controlling BST1-0 bits, the bass boost signal can be output from DAC. The setting value is common in Lch and Rch
(Table 22). The frequency of bass boost filter scales sampling frequency.
BST1
BST0
BOOST
0
OFF
Default
0
1
MIN
1
0
MID
1
MAX
Table 22. Bass Boost
Boost Filter (fs=44.1kHz)
-5
0
5
10
15
20
10
100
1000
10000
Frequency [Hz]
Level
[dB]
MAX
MID
MIN
Figure 16. Bass Boost Frequency (fs=44.1kHz)
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