Highpass filter and DC offset click 2018-06-14 13:13:49 Opus has a highpass filter for removing DC offset. As tracks are normally encoded one at a time, the filter is unaware of the DC history from the previous track. A discontinuity click is created at the track boundary. Ideally, this offset should be removed on the disk image as a whole. But I may not have noticed it in continuous or quiet listening of the album. Typical users won't do it.1) Can you somehow extrapolate the audio backwards enough for the filter to settle? Probably not reliable, because around 1/3 seconds are required for 3 hz.2) Make the HPF defeatable?No other encoder has an implicit HPF, or it is optionally selectable with a checkbox (ac3, itunes). What benefit does the HPF bring to encoding, and does it remain significant at transparent bitrates?