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Here說Web音頻API適用於Android的Chrome和here我已經測試了CM Browser,Chrome和CyanogenMod默認的Android 5.1.1瀏覽器,並且都通過了測試(特別是biquadNode之一)。Android中的Web Audio Api biquadFilter需要額外配置嗎?
但是,當我用eq(biquadNode)打開this codepen時,我可以聽到音樂但聽不到eq的工作。
biquadNode在android中有效嗎?任何特殊的實施需要?
*所需的代碼筆張貼
var context = new AudioContext();
var mediaElement = document.getElementById('player');
var sourceNode = context.createMediaElementSource(mediaElement);
// EQ Properties
//
var gainDb = -40.0;
var bandSplit = [360,3600];
var hBand = context.createBiquadFilter();
hBand.type = "lowshelf";
hBand.frequency.value = bandSplit[0];
hBand.gain.value = gainDb;
var hInvert = context.createGain();
hInvert.gain.value = -1.0;
var mBand = context.createGain();
var lBand = context.createBiquadFilter();
lBand.type = "highshelf";
lBand.frequency.value = bandSplit[1];
lBand.gain.value = gainDb;
var lInvert = context.createGain();
lInvert.gain.value = -1.0;
sourceNode.connect(lBand);
sourceNode.connect(mBand);
sourceNode.connect(hBand);
hBand.connect(hInvert);
lBand.connect(lInvert);
hInvert.connect(mBand);
lInvert.connect(mBand);
var lGain = context.createGain();
var mGain = context.createGain();
var hGain = context.createGain();
lBand.connect(lGain);
mBand.connect(mGain);
hBand.connect(hGain);
var sum = context.createGain();
lGain.connect(sum);
mGain.connect(sum);
hGain.connect(sum);
sum.connect(context.destination);
// Input
//
function changeGain(string,type)
{
var value = parseFloat(string)/100.0;
switch(type)
{
case 'lowGain': lGain.gain.value = value; break;
case 'midGain': mGain.gain.value = value; break;
case 'highGain': hGain.gain.value = value; break;
}
}
然後我需要告訴我的網站訪問者啓用此選項'chrome:// flags /#enable-unified-media-pipeline' – distante
是的。如果他們使用Chrome 49及更高版本。我認爲有一天這將成爲默認,但我不知道。 –