class VolumeFaderEffect |
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\class VolumeFaderEffect volumefadereffect.h Phonon/VolumeFaderEffect
Audio effect to gradually fade the audio volume.
This effect differs from gradually changing the output volume in that a dedicated effect can change the volume in the smallest possible steps while every other volume control will make more or less noticeable steps.
Author Matthias Kretz See also AudioOutput.volume |
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Tells the Fader to change the volume from the current volume to 100%
in fadeTime milliseconds.
Short for fadeTo(1.0, fadeTime).
fadeTime - the fade duration in milliseconds See also fadeTo See also volume |
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Tells the Fader to change the volume from the current volume to 0%
in fadeTime milliseconds.
Short for fadeTo(0.0, fadeTime).
fadeTime - the fade duration in milliseconds See also fadeTo |
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Tells the Fader to change the volume from the current value to
volume in fadeTime milliseconds
See also fadeIn See also fadeOut |
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more extreme version of the -9dB fade |
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"Crossfade curve" / "fast" fade out
Often the best fade for a crossfade, as after half of the time the volume reached -3dB. This means that half the possible power (which is proportional to the square of the voltage) is reached. Summed, the maximum power of two audio signals fading with a -3dB curve will always be equal.
For fading in or out the -3dB curve is too abrupt in the end.
This is the default fade curve.
Fade3Decibel | - | - | ||
Fade6Decibel | - | - | ||
Fade9Decibel | - | - | ||
Fade12Decibel | - | - |