DEVICE AND METHOD OF IMPROVED SIGNAL FADE OUT IN DIFFERENT DOMAINS DURING ERROR CONCEALMENT Russian patent published in 2018 - IPC G10L19/05 

FIELD: acoustics.

SUBSTANCE: invention relates to acoustics, in particular to audio signal decoders. Device comprises means for receiving a sound signal, which is configured to receive frames containing sound information. Device contains a noise level tracking unit, the first recovery unit for restoring in the first recovery area of the third part of the audio signal, depending on the noise level information, if the third frame from the multiple frames is not received using the receive interface or if the specified third frame is received using the receive interface, but it is damaged, the first recovery area is different or equal to the tracking area. In addition, the device comprises means for converting noise level information from the tracking area to the second recovery area, if the fourth frame from the plurality of frames is not received by the reception means or if the said fourth frame is received by the reception means, but it is damaged. Device contains a second recovery unit for recovery in the second recovery area of the fourth part of the audio signal, depending on the noise level information presented in the second recovery area, if the specified fourth frame from the plurality of frames is not received by the reception means or if the said fourth frame is received by the reception means, but it is damaged.

EFFECT: providing method for improved signal fade out for switched audio coding systems during error concealment.

24 cl, 17 dwg, 2 tbl