FIELD: physics, acoustics.
SUBSTANCE: invention relates to audio encoding technologies. An audio encoder for encoding an audio signal has a first coding channel for encoding an audio signal using a first coding algorithm. The first coding channel has a first time/frequency converter for converting an input signal into a spectral domain. The audio encoder also has a second coding channel for encoding an audio signal using a second coding algorithm. The first coding algorithm differs from the second coding algorithm. The second coding channel has a domain converter for converting an input signal from an input domain into an output domain audio signal.
EFFECT: improved encoding/decoding of audio signals in low bitrate circuits.
21 cl, 43 dwg, 10 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| MULTIMODE AUDIO SIGNAL DECODER, MULTIMODE AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAMS USING LINEAR PREDICTIVE CODING BASED ON NOISE LIMITATION | 2010 |
|
RU2591661C2 |
| LOW BITRATE AUDIO ENCODING/DECODING SCHEME USING CASCADED SWITCHES | 2009 |
|
RU2485606C2 |
| LOW BIT RATE AUDIO ENCODING/DECODING SCHEME WITH COMMON PREPROCESSING | 2009 |
|
RU2483365C2 |
| AUDIO ENCODING/DECODING SCHEME HAVING SWITCHABLE BYPASS | 2009 |
|
RU2483364C2 |
| APPARATUS AND METHOD FOR ENCODING/DECODING AUDIO SIGNAL USING ALIASING SWITCH SCHEME | 2009 |
|
RU2492530C2 |
| LOW LATENCY AUDIO ENCODING, COMPRISING ALTERNATING PREDICTIVE CODING AND TRANSFORM CODING | 2011 |
|
RU2584463C2 |
| AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAM USING SAMPLING RATE DEPENDENT TIME-WARP CONTOUR ENCODING | 2011 |
|
RU2586848C2 |
| AUDIO ENCODER AND AUDIO DECODER FOR ENCODING FRAMES PRESENTED IN FORM OF AUDIO SIGNAL SAMPLES | 2009 |
|
RU2498419C2 |
| AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHOD OF DECODING AUDIO SIGNAL, METHOD OF ENCODING AUDIO SIGNAL AND COMPUTER PROGRAM USING PITCH-DEPENDENT ADAPTATION OF CODING CONTEXT | 2011 |
|
RU2607264C2 |
| METHOD AND DISCRIMINATOR FOR CLASSIFYING DIFFERENT SIGNAL SEGMENTS | 2009 |
|
RU2507609C2 |
