METHOD AND DEVICE FOR CONTROLLING AUDIO FRAME LOSS MASKING Russian patent published in 2017 - IPC G10L19/05 G10L19/25 

FIELD: physics.

SUBSTANCE: transient condition is detected in the property of the previously received and restored audio signal (which indicates a signal surge or decay) that can lead to a suboptimal quality of recovery, when the original masking method is used to create a substitute frame. The original masking method is modified by selectively adjusting the amplitude of the substitute frame spectrum, when the transient condition is detected. Additionally, the second condition is observed in the statistical property of observed frame losses, which can lead to a non-optimal quality of recovery, when the original masking method is used to create a substitute frame. Additionally, the original masking method is modified by selectively adjusting the amplitude of the substitute frame spectrum, when the second condition is detected. The second condition is the loss of several frames in a row.

EFFECT: increasing the quality of masking in case of audio frame loss.

27 cl, 15 dwg