程序包 ohos.media.audio

类 AudioEqualizer

java.lang.Object

ohos.media.audio.SoundEffect

ohos.media.audio.AudioEqualizer

public class AudioEqualizer
extends SoundEffect

Represents an audio equalizer, which is used to adjust the frequency response of a specific music source or main output mix sound.

从以下版本开始:

4

SystemCapability

SystemCapability.Multimedia#AUDIO

嵌套类概要

从类继承的嵌套类/接口 ohos.media.audio.SoundEffect

SoundEffect.SoundEffectInfo

字段概要

字段

限定符和类型	字段	说明
static int	PARA_ID_FREQ_GAIN	Parameter Id for Frequency gain.
static int	PARA_ID_FREQS_NUM	Parameter Id for Frequency nums.

从类继承的字段 ohos.media.audio.SoundEffect

SOUND_EFFECT_MODE_AUXILIARY, SOUND_EFFECT_MODE_INSERT, SOUND_EFFECT_MODE_PRE_PROCESSING, SOUND_EFFECT_TYPE_AE, SOUND_EFFECT_TYPE_EC, SOUND_EFFECT_TYPE_GC, SOUND_EFFECT_TYPE_INVALID, SOUND_EFFECT_TYPE_NS

构造器概要

构造器

构造器	说明
AudioEqualizer(int priority, int sessionId, String packageName)	A constructor used to create a AudioEqualizer instance.

方法概要

限定符和类型	方法	说明
boolean	setFrequencyGain(short freq, short gain)	Sets the audio gain for a specific frequency.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从类继承的方法 ohos.media.audio.SoundEffect

acquireEffects, getActivated, getEffectId, getEffectInfo, isEffectAvailable, release, setActivated

字段详细资料

PARA_ID_FREQS_NUM

public static final int PARA_ID_FREQS_NUM

Parameter Id for Frequency nums.

另请参阅:

常量字段值

PARA_ID_FREQ_GAIN

public static final int PARA_ID_FREQ_GAIN

Parameter Id for Frequency gain.

另请参阅:

常量字段值

构造器详细资料

AudioEqualizer

public AudioEqualizer(int priority,
                      int sessionId,
                      String packageName)
               throws RuntimeException

A constructor used to create a AudioEqualizer instance.

参数:

priority - Indicates the priority of an equalizer.

sessionId - Indicates the ID of an audio playback session.

packageName - Indicates an application package name.

抛出:

RuntimeException - Throws this exception if initialization of this class fails.

从以下版本开始:

4

方法详细资料

setFrequencyGain

public boolean setFrequencyGain(short freq,
                                short gain)

Sets the audio gain for a specific frequency.

参数:

freq - Indicates the frequency.

gain - Indicates the audio gain to set.

返回:

Returns true if the setting is successful; returns false otherwise.

从以下版本开始:

4