FIELD: information technology.
SUBSTANCE: audio signal processing method involves an operation for converting a temporary signal to spectral coefficients, extracting the spectrum envelope of the signal in form of average spectrum energy on bands, quantisation of the envelope and lossless encoding thereof, normalisation of the spectrum in accordance with the spectrum envelope on bands and transmission of the normalised spectrum with subsequent decoding.
EFFECT: high efficiency of encoding quanta of band energy and high quality of audio decoding.
20 cl, 11 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR BINARY ENCODING QUANTISATION INDICES OF SIGNAL ENVELOPE, METHOD OF DECODING SIGNAL ENVELOPE AND CORRESPONDING CODING AND DECODING MODULES | 2007 |
|
RU2420816C2 |
| METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO SIGNALS (VERSIONS) | 2012 |
|
RU2505921C2 |
| IMPROVED QUANTIZER | 2017 |
|
RU2752127C2 |
| IMPROVED QUANTIZER | 2021 |
|
RU2823174C2 |
| IMPROVED QUANTIZER | 2014 |
|
RU2640722C2 |
| AUDIO PROCESSING SYSTEM | 2014 |
|
RU2625444C2 |
| SOUND CODING DEVICE AND DECODING DEVICE | 2014 |
|
RU2630887C2 |
| AUDIO ENCODING DEVICE AND DECODING DEVICE | 2014 |
|
RU2740690C2 |
| AUDIO ENCODING DEVICE AND DECODING DEVICE | 2014 |
|
RU2740359C2 |
| METHOD AND DEVICE FOR INTRODUCING LOW-FREQUENCY EMPHASIS WHEN COMPRESSING SOUND BASED ON ACELP/TCX | 2005 |
|
RU2389085C2 |
