FIELD: physics.
SUBSTANCE: invention relates to means for parametric reconstruction of audio signals. Encoding system encodes an N-channel audio signal (X), where N≥3, as a single-channel down-mix signal (Y) together with the parameters of dry and wet up-mix (C, P). In the decoding system, the decorrelation section outputs (N-1)-channel decorrelated signal (Z) based on the downmix signal; wherein the dry up-mixing section linearly displays the downmix signal in accordance with dry up-mixing ratio (C), determined on the basis of the parameters of dry up-mixing; wherein the wet-up-mixing section fills the auxiliary matrix and linearly displays the de-correlated signal in accordance with the wet-up-mixing coefficients.
EFFECT: technical result is to increase the coding efficiency of the multi-channel audio signal.
22 cl, 16 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PARAMETRIC CODING AND DECODING OF MULTICHANNEL AUDIO SIGNALS | 2015 |
|
RU2704266C2 |
| PARAMETRIC ENCODING AND DECODING OF MULTI-CHANNEL AUDIO SIGNALS | 2015 |
|
RU2798759C2 |
| IMMERSIVE VOICE AND AUDIO SERVICES (IVAS) WITH ADAPTIVE DOWNMIXING STRATEGIES | 2021 |
|
RU2821064C1 |
| DEVICE AND METHOD TO SYNTHESISE OUTPUT SIGNAL | 2008 |
|
RU2439719C2 |
| MULTI-CHANNEL AUDIO DECODER, MULTI-CHANNEL AUDIO ENCODER, METHODS, COMPUTER PROGRAM AND ENCODED AUDIO REPRESENTATION USING A DECORRELATION RENDERED AUDIO SIGNALS | 2014 |
|
RU2665917C2 |
| ENCODER, DECODER AND METHODS FOR BACKWARD COMPATIBLE SPATIAL ENCODING OF AUDIO OBJECTS WITH VARIABLE AUTHORIZATION | 2013 |
|
RU2669079C2 |
| METHOD OF IMPROVING MULTICHANNEL RECONSTRUCTION CHARACTERISTICS BASED ON FORECASTING | 2005 |
|
RU2369917C2 |
| RENDERER CONTROLLED SPATIAL UPMIX | 2014 |
|
RU2659497C2 |
| AUDIO SIGNAL DECODER, METHOD OF DECODING AUDIO SIGNAL AND COMPUTER PROGRAM USING CASCADED AUDIO OBJECT PROCESSING STAGES | 2010 |
|
RU2558612C2 |
| SOUND CODING WITH APPLICATION OF DECORRELATED SIGNALS | 2005 |
|
RU2369982C2 |
