ios小程序真机音频有播放，但是没有声音

操作步骤：

 playAudio() {  
      if (this.innerAudioContext) {  
        // 获取当前播放状态  
        let paused = this.innerAudioContext.paused;  
        console.log("paused", paused);  
        if (paused) {  
          this.innerAudioContext.play();  
        } else {  
          this.innerAudioContext.pause();  
        }  
      } else {  
        uni.showToast({  
          icon: "none",  
          title: "音频加载中...",  
        });  
        this.innerAudioContext = uni.createInnerAudioContext();  
        console.log(" this.innerAudioContext", this.innerAudioContext);  
        this.innerAudioContext.autoplay = true;  
        this.innerAudioContext.obeyMuteSwitch = false;  
        // this.innerAudioContext.src = this.audioUrl;  
        this.innerAudioContext.src =  
          "http://img.artstudent.cn/pr/2021-03-03/049237b0092943d3b9c4d9ce04f86bc1.mp3";  
        console.log(this.audioUrl);  
        console.log(" this.innerAudioContext", this.innerAudioContext);  
        this.innerAudioContext.onPlay(() => {  
          console.log("onplay");  
          this.playStatus = true;  
        });  
        this.innerAudioContext.onPause(() => {  
          this.playStatus = false;  
        });  
        this.innerAudioContext.onEnded(() => {  
          this.playStatus = false;  
        });  

        this.innerAudioContext.onStop(() => {  
          this.playStatus = false;  
        });  
        this.innerAudioContext.onError((res) => {  
          this.playStatus = false;  
          uni.showToast({  
            icon: "none",  
            title: res.errMsg,  
          });  
          console.log(res);  
        });  
      }  
    },  

预期结果：

在IOS小程序中可以播放

实际结果：

播放事件有触发，无报错，但是没有声音