WINCE 不SUPPORT的函數

MFC for Windows CE does not support the following methods of the CWnd class:


ArrangeIconicWindows

CancelToolTips

ChangeClipboardChain

CreateCaret

CreateGrayCaret

DlgDirList

DlgDirListComboBox

DlgDirSelect

DlgDirSelectComboBox

DragAcceptFiles

DrawMenuBar

EnableScrollBar

EnableToolTips

FilterToolTipMessage

FlashWindow

GetClipboardViewer

GetDCEx

GetDSCCursor

GetLastActivePopup

GetSystemMenu

GetUpdateRgn

GetWindowContextHelpId

GetWindowPlacement

GetWindowRgn

HiliteMenuItem

InvalidateRgn

IsZoomed

LockWindowUpdate

OnActivateApp

OnAskCbFormatName

OnChangeCbChain

OnChildActivate

OnCompacting

OnContextMenu

OnDeviceChange

OnDevModeChange

OnDrawClipboard

OnDropFiles

OnDSCNotify

OnEndSession

OnEnterIdle

OnEnterMenuLoop

OnExitMenuLoop

OnGetMinMaxInfo

OnHScrollClipboard

OnIconEraseBkgnd

OnInitMenu

OnMButtonDblClk

OnMButtonDown

OnMButtonUp

OnMDIActivate

OnMenuSelect

OnMouseActivate

OnMouseWheel

OnMoving

OnNcActivate

OnNcCalcSize

OnNcCreate

OnNcHitTest

OnNcLButtonDblClk

OnNcLButtonDown

OnNcLButtonUp

OnNcMButtonDblClk

OnNcMButtonDown

OnNcMButtonUp

OnNcMouseMove

OnNcPaint

OnNcRButtonDblClk

OnNcRButtonDown

OnNcRButtonUp

OnPaintClipboard

OnPaletteIsChanging

OnParentNotify

OnQueryDragIcon

OnQueryEndSession

OnQueryNewPalette

OnQueryOpen

OnRButtonDblClk

OnRButtonDown

OnRButtonUp

OnRegisteredMouseWheel

OnSetCursor

OnSizeClipboard

OnSizing

OnSpoolerStatus

OnStyleChanging

OnSysColorChange

OnTimeChange

OnToolHitTest

OnVScrollClipboard

OnWindowPosChanging

SetClipboardViewer

SetMenu

SetWindowContextHelpId

SetWindowPlacement

SetWindowRgn

ShowOwnedPopups

ShowScrollBar

UnockWindowUpdate

ValidateRgn

 
 
http://msdn.microsoft.com/ja-jp/library/ms930331.aspx

Audio 知識

Sound --> ADC --> Digital Form ( CD, SACD, XRCD )
Digital Form --> DAC --> Analog --> Amplifier --> Speaker

Digital Form Enhance
1. Upsampling ( Dithering + Noise Shaping(Shaving?) + ...

24bit/176.4KHz Best
24bit Dynamic Range ( Equal Segment) is 144dB
20bit Dynamic Range is 120dB
16bit Dynamic Range is 96dB
XRCD Dynamic Range is around 108dB

Formula

20 * log10( 2^24 ) = 20 * 7.22 = 144 dB

SNR = Dynamic Range + 1.76dB

The dynamic range of human hearing is roughly 140 dB.

2. Digital Transfer
by SPDIF

by XLR

by HDMI

transmiiter IC --> wire --> receiver IC--> I2S ( DAC accepted form ) --> DAC




DAC

Dynamic Range
SNR
THD ( Total Harmonic Distortion )
IMD

PCM1792 Datasheet recommended using NE5534 & LT1028 op

The operational amplifier recommended for the IV circuit is the NE5534, and the operational amplifier recommended for the differential circuit is the Linear Technology LT1028, because its input noise is low.


The circuit of Figure 37 can realize the highest performance. In this case the output level is set to 4.5 V rms and 129 dB S/N is achieved (stereo mode). In monaural mode, if the output of the L-channel and R-channel is used as a balanced output, 132 dB S/N is achieved (see Figure 39).
Balanced Output (XLR, TRS)