[🐛Bug]: 780EPV拨打电话后播放音频只有噪音

### 描述一下这个bug / Describe the bug

使用780EPV拨打电话后播放指定音频失败

### 复现步骤 / To Reproduce

```
//开机执行代码注册媒体通道
cc.init(0);
//...
// 触发  拨打电话
 cc.dial(0, data.telNo);

// 监听通话事件
sys.subscribe("CC_IND", function(status)
    //...
    
    //在通话开始中
    if status == "SPEECH_START" then
        //...
        // 以下的都不能用
        audio.play(0,"/luadb/call.mp3")
        // audio.play(0,"FILE","/luadb/call.mp3",5,nil,true)
        // audio.play(0,"FILE","/lua/call.mp3",5,nil,true)
    end

//...
end

测试过使用  不过返回false
// audio.start(0, audio.MP3, 1, 16000, 32)
```

### 如果正常，应该是什么样 / Expected behavior

780EPV拨打电话后播放音频

### 截图 / Screenshots

![输入图片说明](https://foruda.gitee.com/images/1723101159536593249/56e44c0e_2258377.png "屏幕截图")

### 日志 / Logs

[2024-08-08 15:12:00.383][000000000.010] BSP_CustomInit 503:io level 3
[2024-08-08 15:12:00.389][000000000.011] Uart_ChangeBR 1271:uart0, 6000000 6028985 26000000 69
[2024-08-08 15:12:00.395][000000000.026] poweron: Power/Reset
[2024-08-08 15:12:00.400][000000000.194] LuatOS@EC718PV base 23.11 bsp V1002 32bit
[2024-08-08 15:12:00.404][000000000.194] ROM Build: Jul  4 2024 15:00:42
[2024-08-08 15:12:00.411][000000000.198] loadlibs luavm 163832 13032 13032
[2024-08-08 15:12:00.415][000000000.198] loadlibs sys   253648 87512 88700
[2024-08-08 15:12:00.419][000000000.573] self_info 128:model Air780EPV_A11 imei 864814075911734
[2024-08-08 15:12:01.722][000000001.924] soc_cms_proc 1733:cenc report 1,51,1,15
[2024-08-08 15:12:03.929][000000004.165] dns_run 668:sms.dedaolm.com state 0 id 1 ipv6 0 use dns server0, try 0
[2024-08-08 15:12:03.987][000000004.219] dns_run 685:dns all done ,now stop
[2024-08-08 15:12:05.042][000000005.270] --------------------CC_IND----------------:	READY
[2024-08-08 15:12:08.104][000000008.343] --------------------CC_IND----------------:	PLAY
[2024-08-08 15:12:08.115][000000008.344] --------------------CC_IND----------------:	INCOMINGCALL
[2024-08-08 15:12:08.124][000000008.344] CALL FROM 	15638679880
[2024-08-08 15:12:08.135][000000008.367] --------------------CC_IND----------------:	PLAY
[2024-08-08 15:12:08.411][000000008.651] luat_audio_speech 678:save rx len 0
[2024-08-08 15:12:08.426][000000008.652] --------------------CC_IND----------------:	SPEECH_START
[2024-08-08 15:12:08.436][000000008.653] --------------------CC_IND----------------:	ANSWER_CALL_DONE
[2024-08-08 15:12:18.487][000000018.729] --------------------CC_IND----------------:	PLAY
[2024-08-08 15:12:18.491][000000018.730] --------------------CC_IND----------------:	PLAY
[2024-08-08 15:12:18.493][000000018.730] --------------------CC_IND----------------:	HANGUP_CALL_DONE
[2024-08-08 15:12:18.535][000000018.765] soc_cms_proc 1733:cenc report 1,38,1,7

### PACK包版本 / Version

LuatOS@EC718PV base 23.11 bsp V1002 32bit

### 验证

- [x] 检查过该问题，之前没有人提过 / Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
- [x] 提供了最小可复现工程或详细的复现步骤，确保开发者可以复现 / The provided reproduction is a [minimal reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) of the bug.
- [x] 已经提供了完整的报错信息、日志、截图，没有经过删减。

GVP 合宙Luat/LuatOS

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GVP合宙Luat/LuatOS

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