參數(shù)資料
型號: AK4564
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP
中文描述: 16位編解碼器,配有ALC和麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù): 26/48頁
文件大小: 382K
代理商: AK4564
ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 26 -
n
Digital EQ/HPF/LPF Circuits
The AK4564 performs equalizing, filtering and ALC (Automatic Level Control) by digital domain for A/D converter
data. The equalizing circuit emphasizes stereo separation when using internal microphone. LPF1, LPF2 and HPF2 are IIR
filters of 1
st
order to compensate frequency response of microphone and etc. HPF3 is IIR filter of 2
nd
order to cut a
wind-noise. Refer to the section of “ALC1 operation” about ALC1.
Rch
Lch
HPF3
ALC1
LPF2
HPF3
ALC1
LPF2
HPF1
HPF1
Rch
Lch
+
Equalizing
Filtering
+
MIX
HPF2
HPF2
wind-noise cut
MIX
LPF1
LPF1
Main
Main
Sub
Sub
Figure 21. Digital EQ/HPF/LPF
相關(guān)PDF資料
PDF描述
AK4564VQ 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP
AKD4564 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP
AK4565 LOW POWER 20BIT CODEC WITH BUILT IN ALC
AK4565VF LOW POWER 20BIT CODEC WITH BUILT IN ALC
AK4566 20bit Stereo CODEC with built-in IPGA & HP-AMP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4564VQ 制造商:AKM 制造商全稱:AKM 功能描述:16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP
AK4565 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER 20BIT CODEC WITH BUILT IN ALC
AK4565VF 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER 20BIT CODEC WITH BUILT IN ALC
AK4566 制造商:AKM 制造商全稱:AKM 功能描述:20bit Stereo CODEC with built-in IPGA & HP-AMP
AK4566VN 制造商:AKM 制造商全稱:AKM 功能描述:20bit Stereo CODEC with built-in IPGA & HP-AMP