如何控制输出增益？

Question

我已经创建了一个带有振荡器的音频上下文，但我无法控制输出的增益，即使 gainNode.gain.value :

var AudioContext = window.AudioContext || window.webkitAudioContext;  
var audioctx = new AudioContext();
var gainNode = audioctx.createGain();

var oscillator = audioctx.createOscillator(); 
var oscillator2 = audioctx.createOscillator();

oscillator.connect(audioctx.destination);
oscillator.start(0);
gainNode.connect(audioctx.destination);
gainNode.gain.value = 0;

Answer 1

您需要将振荡器连接到增益节点，而不是目的地：

oscillator.connect(gainNode);
oscillator.start(0);
gainNode.connect(audioctx.destination);
gainNode.gain.value = 0;