| 摘要 |
An audio frequency signal is quantified in a CELP-type encoder or the like using perceptual weighting. Synthesizer filters receive a frame-by-frame excitation signal as being the product of a wave form for gain. The wave form is partitioned into segments with predefined size. Said partitioning is used to carry out an efficient calculation of the excitation, thereby limiting the complexity of the encoder while remaining very close to the optimal solution. |
