KDE 4.2 PyKDE API Reference
VolumeFaderEffect Class Reference
from PyKDE4.phonon import *
Inherits: Phonon.Effect → QObject
Namespace: Phonon
Detailed Description
\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.
- See also:
- AudioOutput.volume
Enumerations | |
| FadeCurve | { Fade3Decibel, Fade6Decibel, Fade9Decibel, Fade12Decibel } |
Methods | |
| Phonon.VolumeFaderEffect.FadeCurve | fadeCurve (self) |
| fadeIn (self, int fadeTime) | |
| fadeOut (self, int fadeTime) | |
| fadeTo (self, float volume, int fadeTime) | |
| setFadeCurve (self, Phonon.VolumeFaderEffect.FadeCurve curve) | |
| setVolume (self, float volume) | |
| setVolumeDecibel (self, float volumeDecibel) | |
| float | volume (self) |
| float | volumeDecibel (self) |
Method Documentation
| Phonon.VolumeFaderEffect.FadeCurve fadeCurve | ( | self ) |
| fadeIn | ( | self, | ||
| int | fadeTime | |||
| ) |
Tells the Fader to change the volume from the current volume to 100% in fadeTime milliseconds. Short for fadeTo(1.0, fadeTime).
- Parameters:
-
fadeTime the fade duration in milliseconds
- See also:
- fadeTo
- See also:
- volume
| fadeOut | ( | self, | ||
| int | fadeTime | |||
| ) |
Tells the Fader to change the volume from the current volume to 0% in fadeTime milliseconds. Short for fadeTo(0.0, fadeTime).
- Parameters:
-
fadeTime the fade duration in milliseconds
- See also:
- fadeTo
| fadeTo | ( | self, | ||
| float | volume, | |||
| int | fadeTime | |||
| ) |
Tells the Fader to change the volume from the current value to volume in fadeTime milliseconds
- See also:
- fadeIn
- See also:
- fadeOut
| setFadeCurve | ( | self, | ||
| Phonon.VolumeFaderEffect.FadeCurve | curve | |||
| ) |
| setVolume | ( | self, | ||
| float | volume | |||
| ) |
| setVolumeDecibel | ( | self, | ||
| float | volumeDecibel | |||
| ) |
| float volume | ( | self ) |
more extreme version of the -9dB fade
| float volumeDecibel | ( | self ) |
Enumeration Documentation
| FadeCurve |
"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.
- Enumerator:
-
Fade3Decibel Fade6Decibel Fade9Decibel Fade12Decibel
