AttenuationModelInverse QML Type

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

Import Statement: import QtAudioEngine 1.15
Since: Qt 5.0
Inherits:

Item

Properties

Detailed Description

AttenuationModelInverse must be defined inside AudioEngine or be added to it using AudioEngine.addAttenuationModel() if AttenuationModelInverse is created dynamically.

 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.