Audio指纹随机

 

 

 

 

_getChannelData = AudioBuffer.prototype.getChannelData;
AudioBuffer.prototype.getChannelData = function() {

    let o = _getChannelData.apply(this, arguments);

    for (let a = 0; a < o.length; a += o.length / 10) {

        a += Math.floor(Math.random() * o.length / 10),
        a >= o.length && (a = o.length - 1),
        o[a] += Math.random() * 1e-7 - 5e-8;

    }

    return o

}