QtAudioEngine.AttenuationModelInverse

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

Properties

• end : real
• name : string
• rolloff : real
• start : real

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

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.

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

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

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.