include / openalpp

audioenvironment.h File Reference

#include "openalpp/audiobase.h"
#include "openalpp/export.h"

Go to the source code of this file.

Namespaces

namespace openalpp

Classes

class openalpp::AudioEnvironment

Enumerations

enum DistanceModel { None, InverseDistance, InverseDistanceClamped }

Enumeration Type Documentation

enum DistanceModel

Enum for setting/getting the current distance model. None means no model is in use, i.e. no attenuation.
InverseDistance:

$G=GAIN-20*log_{10}*(1+ROLLOFF*\frac{dist-REFERENCE\_DISTANCE}{REFERENCE\_DISTANCE})$
$G=min (G,MAX\_GAIN)$
$G=max (G,MIN\_GAIN)$

InverseDistanceClamped:

$dist=max (dist,REFERENCE\_DISTANCE)$
$dist=min (dist,MAX\_DISTANCE)$
And then the calculations in InverseDistance... This is equivalent to the <a href="http://www.iasig.org>IASIG I3DL2 distance model.

In the above calculations, the variables have the following meanings:

dist is the distance from the listener to the source.

REFERENCE_DISTANCE are the distance at which the listener will experience GAIN. Both are set per source.

ROLLOFF is a source specific factor of attenuation. If it's set to one, the InverseDistance model will describe a "physically correct" inverse square behaviour.

MIN_GAIN, MAX_GAIN and MAX_DISTANCE are values used for clamping gain and distance, respectively.

Enumeration values:

None

InverseDistance

InverseDistanceClamped

Generated on Thu Dec 9 14:08:13 2004 for openalpp by

1.3.9.1


Namespaces
namespace	openalpp
Classes
class	openalpp::AudioEnvironment
Enumerations
enum	DistanceModel { None, InverseDistance, InverseDistanceClamped }