METHOD FOR SYNTHESIZING A DIGITAL AUDIO SIGNAL, MEMORY OF A DIGITAL AUDIO SIGNAL SYNTHESIS DEVICE, DIGITAL AUDIO SIGNAL SYNTHESIS DEVICE AND DECODER OF A DIGITAL AUDIO SIGNAL

摘要

synthesis of lost blocks of an audio-digital signal with pitch period correction the present invention aims to modify the signal before the repetition of the pitch period for the synthesis of lost blocks in the decoding of audio-digital signals. the effects of repetition of transients, such as the explosive phonemes of a speech signal, are avoided by comparing samples from a pitch period with that of the previous pitch period. the signal is modified, preferably taking the minimum between a current sample (e (3)) from the last pitch period (tj) and at least one sample (e (2-t0)) from substantially the same position in the preceding pitch period (tj-1).