| 摘要 |
FIELD: physics, computer engineering.SUBSTANCE: invention relates to means of converting a time warp activation signal. An audio encoder includes a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantiser encoder, the window function controller, the time warper, the TNS stage or an additional noise filling (524) analyser being controlled by signal analysis results obtained by a time warp analyser or a signal classifier. A decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.EFFECT: high encoding quality with a low data rate.4 cl, 37 dwg |
