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WM9712L датащи(PDF) 27 Page - Wolfson Microelectronics plc

номер детали WM9712L
подробное описание детали  AC97 Audio and Touchpanel CODEC
PDF  77 Pages
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производитель  WOLFSON [Wolfson Microelectronics plc]
домашняя страница  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9712L датащи(HTML) 27 Page - Wolfson Microelectronics plc

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Production Data
WM9712L
w
PD Rev 4.5 August 2006
27
3D STEREO ENHANCEMENT
The 3D stereo enhancement function artificially increases the separation between the left and right
channels by amplifying the (L-R) difference signal in the frequency range where the human ear is
sensitive to directionality. The programmable 3D depth setting controls the degree of stereo
expansion introduced by the function. Additionally, the upper and lower limits of the frequency range
used for 3D enhancement can be selected using the 3DFILT control bits.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
20h
General
Purpose
13
3DE
0
(disabled)
3D enhancement enable
5
3DLC
0
Lower Cut-off Frequency
0 = Low (200Hz at 48kHz sampling)
1 = High (500Hz at 48kHz sampling)
4
3DUC
0
Upper Cut-off Frequency
0 = High (2.2kHz at 48kHz sampling)
1 = Low (1.5kHz at 48kHz sampling)
22h
DAC 3D
Control
3:0
3DDEPTH
0000
3D Depth
0000: 0% (minimum 3D effect)
0001: 6.67%
…
1110: 93.3%
1111: 100% (maximum)
Table 13 Stereo Enhancement Control
Note:
1.
All cut-off frequencies change proportionally with the DAC sample rate.



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