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Noises in encoded audio AAC-LC DM6467T

 Our application is encoding audio and video and was working fine on DM6467 with DVSDK 2.

Migrating from DM6467 to DM6467T platform (to DVSDK 3.1), we have noises in the audio path after using the encoder. The raw audio supplied to the encoder is fine.

The configuration of the codec is:

   /* Current AAC encoder requires extended parameters */
    IAACENC_Params          aacParams          = {
        Aenc1_Params_DEFAULT,
        AACENC_OBJ_TYP_LC,  /* outObjectType */
        AACENC_TT_ADTS,     /* outFileFormat to be able to play the aac file */
        AACENC_TRUE,        /* useTns */
        AACENC_TRUE,        /* usePns */
        AACENC_TRUE, //AACENC_FALSE,       /* downMixFlag */
        AACENC_BR_MODE_VBR_1, /* bitRateMode */
        -1                  /* ancRate */
    };

Thanks for any help