RPE-LTP的編碼方式
1 40 41 80 81 120 121 160
sequence 1 : 1, 5, 9, 13, ..., 37
sequence 2 : 2, 6, 10, 14, ..., 38
sequence 3 : 3, 7, 11, 15, ..., 39
sequence 4 : 4, 8, 12, 16, ..., 40
- RPE : selects the sequence with the most energy
- there are numerous correlations in the human voice,
especially in long vowels such as the a in car or the
oo in fool , where thesame sound recurs in succeeding
- LTP : intermediate memory for 15 ms
transmit the difference between the two sequences
RPE(Regular Pulse Excitation)
LTP(Long-Term Prediction)