海思HI3516DV300 2.0.1.0SDK 开启回声消除失败

AUDIO_DEV AoDevId = 0;
        AO_CHN AoChn = 0;
    AI_TALKVQE_CONFIG_S stVqeConfig;
        INT ERLBand[6] = {4,6,36,49,50,51};
        INT ERL[7] = {7,10,16,10,18,18,18};
        memset(&stVqeConfig,0,sizeof(stVqeConfig));
        stVqeConfig.u32OpenMask =AI_TALKVQE_MASK_AEC;
        stVqeConfig.s32WorkSampleRate = AUDIO_SAMPLE_RATE_8000;
        stVqeConfig.s32FrameSample = 160;//320;
        stVqeConfig.enWorkstate = VQE_WORKSTATE_COMMON;

        //回声抵消参数
        stVqeConfig.stAecCfg.bUsrMode = 1;
        stVqeConfig.stAecCfg.s8CngMode = 1;
        stVqeConfig.stAecCfg.s8NearAllPassEnergy = 1;
        stVqeConfig.stAecCfg.s8NearCleanSupEnergy = 2;
        stVqeConfig.stAecCfg.s16DTHnlSortQTh = 16384;
        stVqeConfig.stAecCfg.s16EchoBandLow = 10;
        stVqeConfig.stAecCfg.s16EchoBandHigh = 41;
        stVqeConfig.stAecCfg.s16EchoBandLow2 = 47;
        stVqeConfig.stAecCfg.s16EchoBandHigh2 = 63;
        memcpy(stVqeConfig.stAecCfg.s16ERLBand,ERLBand,sizeof(ERLBand));
        memcpy(stVqeConfig.stAecCfg.s16ERL,ERL,sizeof(ERL));
       
        stVqeConfig.stAecCfg.s16VioceProtectFreqL = 3;
        stVqeConfig.stAecCfg.s16VioceProtectFreqL1= 6;

        s32Ret = HI_MPI_AI_SetTalkVqeAttr( AiDevId,  AiChnId,  AoDevId,  AoChn,   &stVqeConfig);
        if(s32Ret!=HI_SUCCESS)
        {
        LIBANV_PRINT(SYS_Module_SysLog_Print_ERR,"a######### HI_MPI_AI_SetTalkVqeAttr dev %d err:0x%x\n", AiDevId, s32Ret);
                return s32Ret;
        }
        if((s32Ret = HI_MPI_AI_EnableVqe(AiDevId,AiChnId)) != HI_SUCCESS)
        {
        LIBANV_PRINT(SYS_Module_SysLog_Print_ERR,"a######### HI_MPI_AI_EnableVqe dev %d err:0x%x\n", AiDevId, s32Ret);
                return s32Ret;
        }                 



以上是开启回声消除的代码，但是没有实际改善效果，查看cat /devlogmpp,有报<3>[    ai] [Func]:AIGetChnData [Line]:496 [Info]:AI chn 0 get aec vb failed!的错误，请问这种情况是什么原因导致，望大神指点！