eAVDSPLoudnessEqualization enumeration (codecapi.h)

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Specifies whether loudness equalization is enabled in an audio decoder or digital signal processor (DSP). This enumeration is used with the AVDSPLoudnessEqualization property.

Syntax

typedef enum eAVDSPLoudnessEqualization {
  eAVDSPLoudnessEqualization_OFF = 0,
  eAVDSPLoudnessEqualization_ON = 1,
  eAVDSPLoudnessEqualization_AUTO = 2
} ;

Constants

eAVDSPLoudnessEqualization_OFF Value: 0 Loudness equalization is disabled.
eAVDSPLoudnessEqualization_ON Value: 1 Loudness equalization is enabled.
eAVDSPLoudnessEqualization_AUTO Value: 2 The decoder or DSP automatically selects the equalization mode.

Remarks

Loudness equalization is a DSP process that maintains a consistent volume level when the audio stream changes.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps | UWP apps]
Minimum supported server	Windows 2000 Server [desktop apps | UWP apps]
Header	codecapi.h

See also

Codec API Enumerations

ICodecAPI Interface