i’m mastering some tracks for a vinyl release. is there a phase meter for ardour? i want to see which tracks are in / out of phase? and i would also like to use an elliptical filter to remove some phase problems in the lower frequencies. can anyone recomment a good elliptical filter to use in ardour.
The phase rotator section of the plugin is designed to help compensate for phase problems in multi-microphone setups and has been known to work well on e.g. drum kits or acoustic instrument / vocal mics. Without knowing the nature of the original material it’s difficult to say if it will be effective for you, but there is a free demo.
What kind of tracks are you mixing? If you’re using good engineering practices there should be no phase issues of any consequence. The real problems occur when things are 180 degrees out of phase, and that is pretty easy to avoid.
i’m mixing a live recording of a group of eight people – there are probably around 15 microphones in total used. i wasn’t the recording engineer. if i had a phase meter, then i could at least have a look at which tracks are out of phase, and how much out of phase.
so, it’s not a matter of avoiding something, more, dealing with the material at hand. there’s no way i can go back and fix the original recordings, which is why i want to have a closer look at any phase problems – especially as this recording will be pressed to vinyl.
any suggestions for a phase meter or elliptic filter? this is what i’m really looking for, not advice on recording.
I don’t know of any elliptical filters for linux, but you might be able to get close enough with a FIR filter. Have you looked at brutefir? (I haven’t used it, so I’m only guessing about its potential suitability).
Regarding phase, I’m guessing since this is for vinyl that you need to check mainly for LF phase problems between R and L. I’m wondering if you could use an oscilloscope plugin in X-Y mode (I sometimes do this with a hardware scope).