问题描述
我为我的一些音乐家朋友建立了一个工具，我想创建一个像spotify has的均衡器。
但是我不能把均衡器的频段增益 到目前为止，我所见过的每个数字均衡器都能够使增益低于0。
我也通常找不到关于Audioeffect属性范围的适当文章：/
希望你们中的一些人能帮助我。
编辑： 使用EqualizerEffectDeFinition的代码：
在AudioGraph初始化后，我初始化eq
this.equalizerLowFreq = new EqualizerEffectDeFinition(this.audioGraph);
this.equalizerMidFreq = new EqualizerEffectDeFinition(this.audioGraph);
this.equalizerHighFreq = new EqualizerEffectDeFinition(this.audioGraph);
我使用3个EqualizerEffectDeFinitions，因为1个仅包含4个波段。
在初始化deviceOutputNode之后，我添加并启用了它们
this.deviceOutputNode.EffectDeFinitions.Add(this.equalizerLowFreq);
this.deviceOutputNode.EffectDeFinitions.Add(this.equalizerMidFreq);
this.deviceOutputNode.EffectDeFinitions.Add(this.equalizerHighFreq);
this.deviceOutputNode.EnableEffectsByDeFinition(this.equalizerLowFreq);
this.deviceOutputNode.EnableEffectsByDeFinition(this.equalizerMidFreq);
this.deviceOutputNode.EnableEffectsByDeFinition(this.equalizerHighFreq);
private void chooseEQ(string EQ)
{
// switch back old EQ button
switch (this.localSettings.Values["selected EQ"].ToString())
{
case "normal":
EQnormal.IsChecked = false;
break;
case "Pop":
EQPop.IsChecked = false;
break;
case "Classic":
EQClassic.IsChecked = false;
break;
case "Jazz":
EQJazz.IsChecked = false;
break;
case "Rock":
EQRock.IsChecked = false;
break;
case "Party":
EQParty.IsChecked = false;
break;
case "Custom":
EQCustom.IsChecked = false;
break;
}
// set EQ
switch (EQ)
{
case "normal":
//this.setEQBands(0,false); <- Gain = 0 gives error
this.setEQBands(1,1,false);
this.localSettings.Values["selected EQ"] = "normal";
EQnormal.IsChecked = true;
break;
case "Pop":
this.setEQBands(0,2,3,-2,-4,false);
this.localSettings.Values["selected EQ"] = "Pop";
EQPop.IsChecked = true;
break;
case "Classic":
this.setEQBands(0,-6,6,false);
this.localSettings.Values["selected EQ"] = "Classic";
EQClassic.IsChecked = true;
break;
case "Jazz":
this.setEQBands(0,5,-5,-1,false);
this.localSettings.Values["selected EQ"] = "Jazz";
EQJazz.IsChecked = true;
break;
case "Rock":
this.setEQBands(0,-9,false);
this.localSettings.Values["selected EQ"] = "Rock";
EQRock.IsChecked = true;
break;
case "Party":
this.setEQBands(8,-3,9,false);
this.localSettings.Values["selected EQ"] = "Party";
EQParty.IsChecked = true;
break;
case "Custom":
this.setEQBands(0,true);
this.localSettings.Values["selected EQ"] = "Custom";
EQCustom.IsChecked = true;
break;
}
}
private void setEQBands(int low1,int low2,int low3,int mid1,int mid2,int mid3,int high1,int high2,int high3,bool isCustomEQ)
{
if (isCustomEQ)
{
this.equalizerLowFreq.Bands[0].Gain = this.customEQ63HzGain;
EQ63HzSlider.Value = this.customEQ63HzGain;
this.equalizerLowFreq.Bands[1].Gain = this.customEQ125HzGain;
EQ125HzSlider.Value = this.customEQ125HzGain;
this.equalizerLowFreq.Bands[2].Gain = this.customEQ250HzGain;
EQ250HzSlider.Value = this.customEQ250HzGain;
this.equalizerMidFreq.Bands[0].Gain = this.customEQ500HzGain;
EQ500HzSlider.Value = this.customEQ500HzGain;
this.equalizerMidFreq.Bands[1].Gain = this.customEQ1kHzGain;
EQ1kHzSlider.Value = this.customEQ500HzGain;
this.equalizerMidFreq.Bands[2].Gain = this.customEQ2kHzGain;
EQ2kHzSlider.Value = this.customEQ500HzGain;
this.equalizerHighFreq.Bands[0].Gain = this.customEQ4kHzGain;
EQ4kHzSlider.Value = this.customEQ500HzGain;
this.equalizerHighFreq.Bands[1].Gain = this.customEQ8kHzGain;
EQ8kHzSlider.Value = this.customEQ500HzGain;
this.equalizerHighFreq.Bands[2].Gain = this.customEQ16kHzGain;
EQ16kHzSlider.Value = this.customEQ500HzGain;
}
else
{
this.equalizerLowFreq.Bands[0].Gain = low1;
EQ63HzSlider.Value = low1;
this.equalizerLowFreq.Bands[1].Gain = low2;
EQ125HzSlider.Value = low2;
this.equalizerLowFreq.Bands[2].Gain = low3;
EQ250HzSlider.Value = low3;
this.equalizerMidFreq.Bands[0].Gain = mid1;
EQ500HzSlider.Value = mid1;
this.equalizerMidFreq.Bands[1].Gain = mid2;
EQ1kHzSlider.Value = mid2;
this.equalizerMidFreq.Bands[2].Gain = mid3;
EQ2kHzSlider.Value = mid3;
this.equalizerHighFreq.Bands[0].Gain = high1;
EQ4kHzSlider.Value = high1;
this.equalizerHighFreq.Bands[1].Gain = high2;
EQ8kHzSlider.Value = high2;
this.equalizerHighFreq.Bands[2].Gain = high3;
EQ16kHzSlider.Value = high3;
}
}
解决方法
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