| 摘要 |
The invention concerns an audio encoding method comprising: collecting audio samples, determining sinusoidal components, estimation of amplitudes and frequencies of the sinusoidal components, obtaining sinusoidal trajectories, splitting trajectories into segments, transforming trajectories to the frequency domain, quantization and selection of transform coefficients in the segments, entropy encoding characterized in that the length of the segments is individually adjusted in time for each trajectory. The invention also concerns an audio signal decoding method comprising: retrieving encoded data, reconstruction of transform coefficients of trajectories' segments, subjecting the coefficients to an inverse transform and reconstruction of the trajectories' segments, generation of sinusoidal components, reconstruction of the audio signal by summation of the sinusoidal components characterized in that missing transform coefficients of the sinusoidal components' trajectories are replaced with noise samples generated on a basis of at least one encoded parameter. |
