ProtectYaNeck36
26th October 2002, 22:10
alright, i have always been having a problem with the sound quality with my svcds at various bitrates ranging from 224 to 160 kbps so i finally decided to extract the audio and find out where the problem is. well on the 160kbps audio i extracted from vanilla sky i found that there is obviously a lowpass set at ~13khz, and this seems to be where the problem is. i hear strange noises coming from the ~13khz range, i dont know how really to describe them other than somewhat of a ringing. i was wondering if anyone could verify, possibly, that they have had the same problem or that this type of artifacting, if infact these are artifacts, is common in mp2 encodes, or is it possible that it is my hardware? im not sure what the lowpass is in 224kbps encodes but i do know that i get the same type of noise from them. this noise is not in the original dvd versions of the movies. all input is welcome and thank you in advance. ps- the audio was converted frome mp2 to wav using MAD and i viewed the frequency analysis and applied eq changes using cep 2.0. also, i encoded the svcd using dvd2svcd build 3 which would mean that it was encoded with besweet which uses toolame and ssrc was used in dvd2svcd to downsample the audio from 48 to 44.1 khz to meet svcd standards. whew.