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Discussion Groups | Speech Coding | confuse the G723.1 concept. Need some help!!
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
confuse the G723.1 concept. Need some help!! - m9021005 - Apr 5 3:06:00 2004
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I am novice at G723.1 and confuse some concept. I am Confuse with some variable in the Find_Acbk() of exec2.c. 1.ClPitchOrd=5 what does the variable mean? the LTP(Pitch predictor) filter order? 2. Hb = 3 + (Sfc & 1); what does the Hb mean? 3./* Filter the last one (ClPitchOrd-1) using the impulse responce */ ........ ........ ........ /* Update the others (ClPitchOrd-2 down to 0) */ the two step seem the RezBuf convolutin the impulse response and save into the FltBuf. but i don't understand the two step mean? Couldn't you try to explain? Hope the veteran G723.1 researcher can give me a hand. thanks . |
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