QtAudioEngine AttenuationModelInverse

Defines a non-linear attenuation curve for a Sound.

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.