QtAudioEngine.AttenuationModelInverse

Defines a non-linear attenuation curve for a Sound. More...

Import Statement: import QtAudioEngine 1.0
Since: Qt 5.0

Properties

Detailed Description

This type is part of the QtAudioEngine 1.0 module.

AttenuationModelInverse must be defined inside AudioEngine.

import QtQuick 2.0
import QtAudioEngine 1.0
Rectangle {
color:"white"
width: 300
height: 500
AudioEngine {
id:audioengine
AttenuationModelInverse {
name:"linear"
start: 20
end: 500
rolloff: 1.5
}
AudioSample {
name:"explosion"
source: "explosion-02.wav"
}
Sound {
name:"explosion"
attenuationModel: "linear"
PlayVariation {
sample:"explosion"
}
}
}
}

Attenuation factor is calculated as below:

distance: distance from sound to listener d = min(max(distance, start), end); attenuation = start / (start + (d - start) * rolloff);

Property Documentation

end : real

This property holds the end distance. There will be no further attenuation if the distance from sound to listener is larger than this. The default value is 1000.


name : string

This property holds the name of AttenuationModelInverse, must be unique among all attenuation models and only defined once.


rolloff : real

This property holds the rolloff factor. The bigger the value is, the faster the sound attenuates. The default value is 1.


start : real

This property holds the start distance. There will be no attenuation if the distance from sound to listener is within this range. The default value is 1.