FIELD: information technology.
SUBSTANCE: in response to a switch event, a temporary smoothing and/or mixing is implemented at transition between the first temporary portion of information signal before a switch event and the second temporary portion of information signal after a switch event in high-frequency spectrum band. Response is given to switching of one or more of: an audio encoding mode in the full bandwidth to a BWE audio coding mode, and a BWE audio coding mode to an audio encoding mode in the full bandwidth, wherein the high frequency spectrum band overlaps a portion of BWE-extension spectrum of a BWE audio encoding mode and a portion of spectrum of transformation or linear prediction encoding with a portion of audio encoding mode spectrum in the full bandwidth.
EFFECT: increased audio quality when switching between different encoding modes with different bandwidths by smoothing and/or mixing sound at appropriate transition.
16 cl, 21 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| AUDIO ENCODER, AUDIO DECODER, METHOD OF PROVIDING CODED AUDIO INFORMATION, METHOD OF PROVIDING DECODED AUDIO INFORMATION, COMPUTER PROGRAM AND CODED PRESENTATION USING SIGNAL-ADAPTIVE BANDWIDTH EXTENSION | 2014 |
|
RU2641461C2 |
| DEVICE AND METHOD FOR DECODING CODED AUDIO WITH FILTER FOR SEPARATING AROUND TRANSITION FREQUENCY | 2014 |
|
RU2640634C2 |
| APPARATUS, METHOD AND COMPUTER PROGRAM FOR DECODING AN ENCODED AUDIO SIGNAL | 2014 |
|
RU2651229C2 |
| APPARATUS AND METHOD FOR DECODING OR ENCODING AN AUDIO SIGNAL USING ENERGY INFORMATION VALUES FOR A RECONSTRUCTION BAND | 2014 |
|
RU2649940C2 |
| DEVICE AND METHOD FOR DECODING AND CODING OF AUDIO SIGNAL USING ADAPTIVE SELECTION OF SPECTRAL FRAGMENTS | 2014 |
|
RU2643641C2 |
| BROADBAND OF HARMONIC AUDIO SIGNAL | 2012 |
|
RU2725416C1 |
| DEVICE AND METHOD FOR ENCODING AND DECODING AN ENCODED AUDIO SIGNAL USING A TEMPORARY NOISE/OVERLAYS GENERATING | 2014 |
|
RU2607263C2 |
| AUDIO CODER, AUDIO DECODER AND RELATED METHODS USING TWO-CHANNEL PROCESSING IN INFRASTRUCTURE OF INTELLECTUAL FILLING INTERVALS OF SIGNAL ABSENCE | 2014 |
|
RU2646316C2 |
| DEVICE AND METHOD FOR CODING OR DECODING SOUND SIGNAL WITH INTELLIGENT FILLING OF INTERVALS IN SPECTRAL AREA | 2014 |
|
RU2635890C2 |
| HARMONIC AUDIO FREQUENCY BAND EXPANSION | 2012 |
|
RU2610293C2 |
