The Acoustics Claim: Shot Came From the South (Claims)
:::caution Attributed claims only The engineer is unnamed, no credentials are given, no methodology is summarized, and the entire claim rests on one link and two words of endorsement. Localizing a gunshot from consumer video in a hard-surfaced courtyard is notoriously unreliable. Nothing here establishes a second shooter or a second location. Tyler Robinson is charged, not convicted. :::
Claim snapshot
| Field | Value |
|---|---|
| The claim | A person described as a sound and acoustics engineer reportedly walks through a 3D model and concludes the shot came from the South — above the "Teachers' balcony" — rather than from the Losee Center rooftop |
| Raised by | @ProjectConstitu, amplifying an unnamed engineer |
| First surfaced | Undated in source |
| Rests on | Anonymous post — a single X link, an unnamed analyst, and the file's own comment: "Amazing video" |
| Evidence rating | THIN |
What is alleged
The file's entire entry for this claim is four lines: "Accoustics shows direction of bulllet. This shows it comes from South. Above Teachers balcony. This is an sound / accustics engineer expert. Walks thru the 3D mode. Amazing video," followed by a link. That is the whole of it. There is no name, no credential, no institution, no described method, no error bars, and no summary of what the 3D model assumed.
The significance claimed for it is real enough: it would place the shot's origin in a different building from the one Robinson allegedly occupied, which would matter enormously if it held.
Lead with what actually disqualifies it, which is that the file cannot hold it alongside its own other claims. The investigation file asserts three mutually incompatible shot origins at the same time:
- This page: the shot came from the South, above the Teachers' balcony.
- The Canon XA55 analysis: a rifle ~120 m away — consistent with the Losee rooftop to the east — plus a separate detonation at the tent.
- Elsewhere in the file: the shot came from inside the tent, via an Israeli CornerShot weapon fired by a concealed shooter.
At most one of these is correct. The file asserts all three. That is not a case being built; that is a case being contradicted by itself, and no reader should be asked to accept the whole set.
The ordinary explanation
Gunshot localization from consumer video in a courtyard ringed by hard building faces is among the least reliable analyses that can be attempted. The first-arriving loud energy at any given microphone is frequently a reflection, not the direct path — which means a naive direction-of-arrival calculation will confidently point at a wall. That is exactly the failure mode that would produce "the shot came from the south" when the shot came from the east.
The recordings make it worse. Crowd phone microphones are automatic-gain-controlled, heavily compressed, and unsynchronized — there is no common clock. A 3D model is only as good as its assumed microphone positions and its assumed clock offsets, and here both are unknown and neither is published. A model with the wrong offsets will produce a precise-looking answer that is precisely wrong.
Against this stands the physical evidence pointing east: multiple witness accounts, campus surveillance tracking a figure to the Losee Center roof, the recovered Mauser rifle in the wooded area north of campus, and a shoe impression consistent with Converse-style sneakers. The file's own Canon analysis, on its own numbers, agrees with the eastern rooftop within a few percent of an independent ten-camera estimate. The acoustics-from-the-south claim contradicts the file's own best acoustic work.
What would settle it
- Name the engineer and publish their credentials, so a claim resting entirely on expertise can be checked for expertise.
- Publish the 3D model with its assumed microphone positions, clock offsets, and speed of sound.
- Publish the source recordings, unedited, with device identification for each.
- Have an independent acoustician re-run the localization blind, and publish the confidence interval — not a direction, an interval.
- Reconcile this claim against the file's own Canon XA55 ~120 m figure and against the CornerShot-in-the-tent claim. At most one survives.
Interesting In This Area
- The Canon XA55 reading puts the rifle near 120 metres, not south.
- Cause of Death carries the same engineer claim with its own rating.
- Six officers and no ambulance covered a crowd the chief put at 3,000.
- The mic sat under the shirt, the precondition every contact-device theory needs.
Interesting In Other Areas
- Four-channel broadcast audio recorded about forty-six metres from the tent.
- The two-event split separates a distant blast from a louder stage event.
- Uncompressed 48kHz capture resolves timing that phone codecs smear together.
- Reviewers say roof video shows no muzzle flash and no recoil.
Images
Videos
Footage related to this page. Each card opens that clip's own page, with the video, the full write-up, and its source.
Other Pages In This Section
The All-Black Man the Construction Worker Met (Claims)
An electrician says a man in all black told the crew someone had been shot. The page rates its own evidence and states plainly that panic-moment eyewitness descriptions are among the weakest evidence there is.
Read this
The Mic Mounted Under the Shirt, Not Over (Claims)
The file asks in one line why the wireless mic sat under the shirt with a furry windscreen still attached. Under-shirt mounting is standard broadcast practice — and it is also the physical foundation the exploding-mic theory is built on.
Read this
Stairs Guy and the Backpack That Doesn't Fit (Claims)
A light blue half-empty backpack leaves the car; a dark, nearly full one appears in the stairwell. Investigators put the usable interior at seventeen inches against a rifle the file itself measures at forty-three or more.
Read this
The Rick Cutler Hand-Device Claim (Claims)
Recorded as a specimen of what is circulating, not as a claim this site advances. Anonymous accounts read a dark object in a named private citizen's hand as a trigger; he has been charged with nothing and no evidence supports it.
Read thisElsewhere In The Investigation
Canon XA55 Audio — Three Booms and Stage Detonation
Professional four-channel audio recorded about forty-six meters from the tent. Researchers say it separates a distant blast from a much louder event at the stage — two sounds, two places.
Read this
Broadcast audio at 48 kHz reportedly separates a distant muzzle blast from a louder event about 46 meters away at the stage. Two sounds, two distances — and the fatal mechanism may not be the rooftop rifle.
Read this
The machine behind the audio — what it was, where it stood, and why uncompressed 48kHz capture resolves timing that phone codecs smear together. Read it before trusting or dismissing the acoustic analysis.
Read thisCitizen reviewers say roof surveillance shows no muzzle flash and no rifle recoil at the moment Kirk was hit. It is used to argue the roof figure was a decoy rather than the source of the harm.
Read thisSources
- @ProjectConstitu — https://x.com/ProjectConstitu/status/1981085808699338766
- Investigation file, section "Accoustics shows direction of bulllet": "This shows it comes from South. Above Teachers balcony. This is an sound / accustics engineer expert. Walks thru the 3D mode. Amazing video." The engineer is not named and no methodology is recorded.
- Investigation file, section "Mic and Camera Canon XA55" — the competing ~120 m rifle estimate.
- Investigation file, section "Monopod Camera / Truck" — the competing Israeli CornerShot-from-inside-the-tent claim, attributed to @ProjectConstitu.
This website's author is @HolonCitizen on X and YouTube/@HolonCitizen. Follow me there.
Interesting
- Four of the alleged foreign devices reportedly surfaced later at the Islamabad Serena.
- Frame analysis reportedly shows shirt expansion before any wound and no supersonic signature.
- Two rival citizen theories agree the device was already on his body.