IBasicAudio::put_Volume
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4/8/2010
This method sets the volume (amplitude) of the audio signal.
Syntax
HRESULT put_Volume(
long lVolume
);
Parameters
lVolume
[in] Value to which to set the Volume property.The allowable input range is –10,000 to 0.
Return Value
Returns an HRESULT value.
E_INVALIDARG is returned for values outside the allowable input range and E_FAIL is returned if the underlying device returns an error.
Remarks
Full volume is 0, and –10,000 is silence; the scale is logarithmic.
Multiply the desired decibel level by 100 (for example –10,000 = –100 dB).
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements For more information, see Setting Up the Build Environment, Version 2.12 requires DXPAK 1.0 or later |