IAMAudioInputMixer::put_Loudness method (strmif.h)

The put_Loudness method enables or disables the loudness control.


HRESULT put_Loudness(
  [in] BOOL fLoudness


[in] fLoudness

Specifies whether loudness is on or off. Use one of the following values.

Value Description
TRUE Sets loudness on.
FALSE Sets loudness off.

Return value

If the method succeeds, it returns S_OK. Otherwise it returns an HRESULT error code.


Loudness boosts the bass of low volume signals before they are recorded, to compensate for the fact that the ear does not hear quiet bass sounds as well as other sounds.


Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)
Library Strmiids.lib

See also

Error and Success Codes

IAMAudioInputMixer Interface