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Quick Setup: Getting Accurate Phase Correction with Voxengo PHA-979
- Purpose
- Phase-aligns multi-mic recordings and stereo channels to reduce comb filtering and improve clarity.
- Basic workflow
- Insert PHA-979 on the track you want to align (typically a drum overhead, room mic, or DI track).
- Use the input selector to choose the reference signal (the track you want others aligned to) or place PHA-979 on the reference and compare.
- Enable real-time monitoring and play the section with the strongest transient content.
- Key controls
- Delay (ms): shifts the signal in time to align transients.
- Phase invert: flips polarity when that’s the needed correction.
- Fine/Coarse: use coarse for large misalignments, fine for sub-ms tweaks.
- Metering: use the correlation meter and waveform display to judge alignment — look for increased mono compatibility and stronger transient peaks.
- Practical tips
- Zoom into waveforms and align visually, then refine by ear.
- Use soloed A/B comparisons between aligned and unaligned signals.
- For multi-mic drums, align toms/overheads to the kick/snare reference to tighten attack.
- Trust meters plus listening: aim for fuller lows and clearer mids, not just metric improvements.
- When in doubt, invert phase first to see if it improves before applying delays.
- Common pitfalls
- Overcompensating with excessive delay—prefer minimal shifts.
- Relying solely on meters—use critical listening in context.
- Ignoring latency compensation in your DAW—ensure PHA-979’s delay is accounted for or compensated.
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