LoudnessEnhancer
public class LoudnessEnhancer
extends AudioEffect
LoudnessEnhancer is an audio effect for increasing audio loudness. The processing is parametrized by a target gain value, which determines the maximum amount by which an audio signal will be amplified; signals amplified outside of the sample range supported by the platform are compressed. An application creates a LoudnessEnhancer object to instantiate and control a this audio effect in the audio framework. To attach the LoudnessEnhancer to a particular AudioTrack or MediaPlayer, specify the audio session ID of this AudioTrack or MediaPlayer when constructing the effect (see getAudioSessionId() and getAudioSessionId()).
Summary
Public methods |
float |
getTargetGain() Return the target gain. |
void |
setTargetGain(int gainmB) Set the target gain for the audio effect. |
Inherited methods |
 From class android.media.audiofx.AudioEffect
|
From class java.lang.Object
Object |
clone() Creates and returns a copy of this object. |
boolean |
equals(Object obj) Indicates whether some other object is "equal to" this one. |
void |
finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. |
final Class<?> |
getClass() Returns the runtime class of this Object. |
int |
hashCode() Returns a hash code value for the object. |
final void |
notify() Wakes up a single thread that is waiting on this object's monitor. |
final void |
notifyAll() Wakes up all threads that are waiting on this object's monitor. |
String |
toString() Returns a string representation of the object. |
final void |
wait(long millis, int nanos) Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed. |
final void |
wait(long millis) Causes the current thread to wait until either another thread invokes the notify() method or the notifyAll() method for this object, or a specified amount of time has elapsed. |
final void |
wait() Causes the current thread to wait until another thread invokes the notify() method or the notifyAll() method for this object. |
|
Constants
PARAM_TARGET_GAIN_MB
int PARAM_TARGET_GAIN_MB
The maximum gain applied applied to the signal to process. It is expressed in millibels (100mB = 1dB) where 0mB corresponds to no amplification.
Constant Value: 0 (0x00000000)
Public constructors
LoudnessEnhancer
LoudnessEnhancer (int audioSession)
Class constructor.
| Parameters |
audioSession |
int: system-wide unique audio session identifier. The LoudnessEnhancer will be attached to the MediaPlayer or AudioTrack in the same audio session. |
Public methods
getTargetGain
float getTargetGain ()
Return the target gain.
| Returns |
float |
the effect target gain expressed in mB. |
setTargetGain
void setTargetGain (int gainmB)
Set the target gain for the audio effect. The target gain is the maximum value by which a sample value will be amplified when the effect is enabled.
| Parameters |
gainmB |
int: the effect target gain expressed in mB. 0mB corresponds to no amplification. |
Android Development Manual