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SoundEffect.DistanceScale Property

  • 项目

Gets or sets a value that adjusts the effect of distance calculations on the sound (emitter).

Namespace: Microsoft.Xna.Framework.Audio
Assembly: Microsoft.Xna.Framework (in microsoft.xna.framework.dll)

Syntax

public static float DistanceScale { get; set; }

Property Value

A value that adjustments the effect of Distance and Doppler calculations on the sound (emitter).

Remarks

If sounds are attenuating too fast, which means the sounds get quiet too quickly as they move away from the listener, you need to increase the DistanceScale. If sounds are not attenuating fast enough, decrease the DistanceScale.

Adjustment Effect
DistanceScale = 0.0 Invalid (DistanceScale will be reset to default of 1.0)
0.0 < DistanceScale <= 1.0 Increases the effect of distance attenuation
DistanceScale = 1.0 No scaling (this is the default setting)
DistanceScale > 1.0 Decrease the effect of distance attenuation

Distance attenuation is calculated using the inverse square law:

      volume = 1.0 / distance

Adding DistanceScale into the equations give:

      If (distance > DistanceScale)
      volume = DistanceScale / distance
      else
      volume = 1.0

See Also

Reference

SoundEffect Class
SoundEffect Members
Microsoft.Xna.Framework.Audio Namespace

Platforms

Xbox 360, Windows XP SP2, Windows Vista, Zune