使用JavaScript/HTML5实时生成声音

Web Audio API用于控制音频，允许您选择音频源。您还可以添加效果；创建音频可视化、平移等。

示例

您可以尝试运行以下代码片段来生成声音−

// use one context per document. Here we are creating one context for one document. You can create for other documents also
var context = new (window.AudioContext || window.webkitAudioContext)();

// oscillator
var os = context.createOscillator();  
os.type = 'sine'; // sine is the default. So you can also use square, saw tooth, triangle
os.frequency.value = 500; // setting the frequency Hz
os.connect(context.destination); // connecting  to the destination

// starting the oscillator
os.start();  
os.stop(context.currentTime + 5); // stop 5 seconds after the current time