186*****731 if (this.gain.gain.setTargetAtTime){ this.gain.gain.setTargetAtTime(this._volume,this.context.currentTime,0);一跑起来就在这里异常"Failed to execute 'setTargetAtTime' on 'AudioParam': Time constant must be a finite positive number: 0" 在chrome里调试就没问题，怎么办？
