tag:blogger.com,1999:blog-5214538580794208872.post708190603838119240..comments2023-08-07T10:44:38.896-04:00Comments on MMM: Phase ArtifactsMafoohttp://www.blogger.com/profile/06560276684013585697noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-5214538580794208872.post-47758249720612558502008-04-27T20:58:00.001-04:002008-04-27T20:58:00.001-04:00oops, made a mistake. i forgot that ozone's phase ...oops, made a mistake. i forgot that ozone's phase meter is different from some other phase meters. where i said the top part of the phase meter will lean to the left, i actually should've said the picture on the meter will start to look like a squashed tomato, or at least closer to a horizontal line than a nice, full round (mostly vertical), properly phase aligned mix would.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5214538580794208872.post-24553263153815859522008-04-27T20:58:00.000-04:002008-04-27T20:58:00.000-04:00This comment has been removed by the author.Babby Daddyhttps://www.blogger.com/profile/14734786483351457585noreply@blogger.comtag:blogger.com,1999:blog-5214538580794208872.post-48633264822207238942008-04-27T20:43:00.000-04:002008-04-27T20:43:00.000-04:00yo, i work for izotope and saw your post come up t...yo, i work for izotope and saw your post come up through google alerts. hopefully i can clear up the phase artifacts thing simply.<BR/><BR/>when you see the word phase in regards to audio, think time. when comparing the phase relationship between two channels, what you are comparing is their relationship in time.<BR/><BR/>ozone's stereo separation module takes advantage of time delays to spread stuff out: because your brain uses time relationships between what's coming in your left and right ears to parse where that sound is located, if you use small delays between left and right you can make something that used to be straight down the center sound "wider." this is kind of wound into the Haas effect (which is worth looking up).<BR/><BR/>so where do the artifacts from phase relationships come from? mostly it is a problem if you ever have to convert your stereo tracks to mono, where phase cancellation will manifest as comb filtering (essentially a series of notch filters spreading across your mix...what you typically think of as the sound of 'phasing'). however, there can be some disorienting, undesirable effects in stereo mixes as well.<BR/><BR/>ozone's metering can tell you at a glance if you can expect problems due to phase. on the reverb and stereo imaging modules (the two places you're most likely to run into this sort of problem), there are phase and correlation meters. if the top of your phase image is leaning to the left, or if the correlation appears to be closer to -1 (again, the left side of the meter), you've got problems!<BR/><BR/>if you wanna hear how bad it is, bonk on the 'show channel ops' box under the phase meter and check 'mono'. this will sum your mix to mono within ozone.<BR/><BR/>the reason you read about phase artifacts while you were boning up on the equalizer is because of pre-echo, a general problem that can happen with digital (linear phase) filters or phase distortion, a general problem that can happen with analog-style (minimum phase) filters. there's a lot of technical reasons why phasing happens with filters, but mostly they are evident with big EQ changes... which, in the mastering stage of the game you really shouldn't be making (if your EQ picture is really that bad, you need to go back to the mix stage).<BR/><BR/>i hope this addressed your issue and brought some light to the often intimidating world of mastering. mastering is just as artistic as the rest of the music making process, but does require a different set of ears... a set that listens for technical problems in a mix as well as aesthetic problems. if you have any other questions, feel free to contact me at the name above plus @izotope.com<BR/><BR/><BR/><BR/>also, your music is rad. you take good advantage of space & timing and it's very nice.Anonymousnoreply@blogger.com