Handpan / hang drum multi-mic phase: close ding vs rim, room, and OH fold
Close mics on handpan or hang drum feel lush and shimmering in the booth and on stage wedges. On studio mono fold or livestream, tone, low ding, and overtones often thin or cancel against rim, room, and OH paths that carry the same pan a few milliseconds later. That is usually polarity and arrival time between close and room/OH, plus a stereo handpan bed that was never folded before send. Fix polarity and small delays first. Frequency-aware phase repair belongs only after residual L/R fights remain on stereo handpan beds before mono fold.
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PHIXER is free stereo phase-repair (VST3/CLAP/AU · Win/Mac/Linux) from Riverflux Audio. Frequency-aware phase rotation for leftover L/R fights on stereo material. It is not a hang compressor, not a widener, and not a substitute for mic placement or mono audition of the stream or mix bus. Polarity and timing first; PHIXER after residual spectral fights.
What handpan / hang drum phase failure sounds like
- Low ding and body thin on livestream. Close ding and room/OH share the same energy a few ms apart.
- Shimmer huge in booth, hollow on phone. Hard L/R handpan layouts disappear when the platform folds.
- Rim mic fights ding / dome close. Same content twice with different delay into the matrix.
- Studio or yoga-stream fold cancels midrange bloom. Stereo bed never checked in mono before send.
- Fine in cans / wedges, broken for remote viewers. Same destinations as OBS livestream, hand drums, steelpan.
Fast mono audition (about 60 seconds)
- Solo the stream / mix bus (not only booth headphones). Flip a utility to mono.
- A/B close muted vs open under rim/room/OH. Note what disappears: low ding, tone, shimmer, attack.
- Solo pairs: ding vs rim, handpan vs room, stereo handpan bed vs mono fold.
- Check correlation on the delivery bus, then with handpan muted vs full.
Order of operations (before spectral phase rotation)
1. Polarity between close ding/rim and room / OH
Flip close vs room, or ding vs rim, when low ding or tone return immediately. Guide: polarity vs phase. Related: steelpan, hand drums.
2. Small delay align close to the hero ding / room image
Close rim or underside mics often arrive earlier (or later) than shared room or OH. A few samples of delay on the secondary (or nudge to the hero ding image) often restores body better than any widener.
3. One hero handpan image to the stream or mix bus
Do not send ding, rim, underside, room, and OH all hot into the livestream or print. Pick a hero image (often a focused ding+gentle room blend), keep extras muted or low. Parallel stacks are classic hollow-tone on phone fold. Related: overhead & room.
4. Prefer hero ding as the body; quieter color rim or room
Secondary closes should color shimmer and proximity, not replace the hero image for the stream mix. If every close sits at full level under a loud OH, mono fold almost always hollows tone. Pull extras first.
5. Skip wideners and Haas on handpan beds before fold
Short-delay width and stereo imagers make booth headphones huge and phones hollow. Keep critical low ding and tone centered for stream and print.
6. Only then audition residual L/R spectral fights
If a stereo handpan bed must stay stereo and fold still hollows a band after the steps above, gentle frequency-aware phase rotation can help. Prove it with mono A/B, rotator bypassed vs engaged.
Path types and typical failure modes
| Path | Common mono failure | First fix |
|---|---|---|
| Ding + rim / underside | Low ding / tone cancel on stream | Polarity; delay secondary; quieter secondary |
| Handpan + room / OH | Shimmer disappears on phone | Polarity + delay; hero image |
| Close + stage bleed | Attack combs or thins | Bleed control; polarity; one hero |
| Stereo handpan pair hard L/R | Huge in cans, gone on phone | Center critical lows; simplify width |
| FOH / matrix → OBS / print | Fine in booth, hollow for viewers | OBS livestream / live FOH |
Studio / livestream checklist (to send)
1. Label ding vs rim vs room vs OH paths
Name ding, rim/underside, room, and OH so operators know what hits the livestream or print. Ambiguous stacks get left open and comb on fold.
2. Mono-check delivery bus alone, then with full handpan
Solo low ding and tone in mono. Then open shimmer and attack in mono. Note fights between secondary color and hero body.
3. Watch phone, social, and archival destinations
Most remote viewers hear mono or near-mono. Guides: live FOH, OBS livestream.
4. Optional null / mono workflow before show
Host-agnostic habit before you go live or print: master bus mono checklist.
When PHIXER helps
- The material is already stereo and must stay stereo (stereo handpan pair, stereo room print), not a mono close you fake-widened.
- Polarity, delay align, and hero-path levels are cleaned up, but fold still hollows a band of the spectrum.
- You can A/B mono with the plugin bypassed and hear clearer ding or shimmer without wrecking the image.
- You are not using it to "fix" unaligned ding+rim under room, or to replace a time-align edit on the matrix.
Decision table
| You notice… | First try | Why |
|---|---|---|
| Tone thins when rim opens under ding | Polarity; delay secondary; quieter secondary | Arrival-time fight |
| Shimmer + room collapse on stream | Hero image; polarity; delay | Stacked identical content |
| Fine in booth, thin on phone | Mono delivery bus; pull extras | Booth ≠ viewer fold |
| Stereo handpan still cancels by band | PHIXER on that stereo bed | Residual spectral L/R fight |
| Mono handpan alone is dull | Tone / EQ / gain / mic choice | Not an L/R repair job |
When NOT to use PHIXER here
- You have not mono-auditioned the stream / mix bus yet.
- The fix is obviously polarity, delay, one hero handpan image, or quieter secondary under ding/room.
- You want PHIXER to make the hang louder, wider, or "more meditation." Wrong job.
- The path is mono and the print problem is balance or EQ.
- See also when not to use PHIXER.
Quick path: Solo delivery bus in mono → polarity ding/rim vs room/OH → delay-align secondary → one hero handpan image → quieter extras under hero → skip Haas/imagers → mono-check with full handpan → PHIXER only for leftover stereo cancellation on a handpan bed → fold again for stream / studio print.
Watch
- PHIXER tutorial + how it sounds (walkthrough with audio examples)