FIELD: physics.
SUBSTANCE: invention relates to computer engineering for processing audio data. Technical result is achieved by determining the spectrum reservation flag of each frequency bin of the high-frequency band signal, wherein the spectrum reservation flag indicates whether the first spectrum corresponding to the frequency bin is reserved in the second spectrum corresponding to the frequency bin, wherein the first spectrum comprises a spectrum corresponding to a frequency bin, prior to bandwidth extension coding, and the second spectrum comprises a spectrum corresponding to the frequency bin, after bandwidth extension coding; performing second encoding on the high-frequency band signal based on the spectrum reservation flag of each frequency bin of the high-frequency band signal to obtain a second encoding parameter of the current frame, wherein the second encoding parameter indicates information on the target tonal component of the high-frequency band signal, and the tonal component information contains location information, quantity information and amplitude information or energy information of the tonal component.
EFFECT: high efficiency of encoding an audio signal in a limited pass band.
22 cl, 9 dwg
Title |
Year |
Author |
Number |
AUDIO SIGNAL CODING DEVICE, AUDIO SIGNAL DECODING DEVICE, AUDIO SIGNAL CODING METHOD AND AUDIO SIGNAL DECODING METHOD |
2015 |
- Kavasima Takuya
- Ekhara Khiroyuki
|
RU2669706C2 |
ENCODING AND DECODING OF PULSE AND RESIDUAL PARTS OF AUDIO SIGNAL |
2022 |
|
RU2825308C2 |
ADAPTIVE BAND EXTENSION AND DEVICE THEREFOR |
2014 |
|
RU2641224C2 |
CALCULATION MODULE AND METHOD FOR DETERMINING DATA OF PHASE CORRECTION FOR AUDIO SIGNAL |
2015 |
- Disch, Sascha
- Laitinen, Mikko-Ville
- Pulkki, Ville
|
RU2676899C2 |
AUDIO PROCESSOR AND METHOD FOR PROCESSING AUDIO SIGNAL USING VERTICAL PHASE CORRECTION |
2015 |
- Disch, Sascha
- Laitinen, Mikko-Ville
- Pulkki, Ville
|
RU2676414C2 |
AUDIO PROCESSOR AND METHOD FOR PROCESSING AUDIO SIGNAL USING HORIZONTAL PHASE CORRECTION |
2015 |
- Disch, Sascha
- Laitinen, Mikko-Ville
- Pulkki, Ville
|
RU2676416C2 |
DECODER AND METHOD FOR DECODING AUDIO SIGNAL, CODER AND METHOD FOR CODING AUDIO SIGNAL |
2015 |
- Dish Sasha
- Lajtinen Mikko-Ville
- Pulkki Ville
|
RU2675151C2 |
PROCESSOR FOR GENERATING PREDICTION SPECTRUM BASED ON LONG-TERM PREDICTION AND/OR HARMONIC POST-FILTERING |
2022 |
- Markovic, Goran
- Edler, Bernd
- Bayer, Stefan
- Kiene, Jan Frederik
|
RU2826967C2 |
SPEECH AUDIO ENCODING DEVICE, SPEECH AUDIO DECODING DEVICE, SPEECH AUDIO ENCODING METHOD AND SPEECH AUDIO DECODING METHOD |
2013 |
- Kavasima Takuya
- Osikiri Masakhiro
|
RU2648629C2 |
SPEECH-AUDIO ENCODING DEVICE, SPEECH-AUDIO DECODING DEVICE, SPEECH-AUDIO ENCODING METHOD AND SPEECH-AUDIO DECODING METHOD |
2019 |
- Kawashima, Takuya
- Oshikiri, Masahiro
|
RU2701065C1 |