Serious Issues with Detective Kristina Carr's Controlled Call Audio Recording • Documented by Marisa T. Déry.

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Marisa T. Déry of Tamar Forensics: Appointed as Audio Forensics Professional Audio Authentication Services (Francis Paul, Controlled Call Audio Recording)

Tamar Forensics LLC • Marisa T. Déry

The following is a summary of the documented report by Tamar Forensics, based on the examination of:
a) File Metadata (hash value)
b) Exif Metadata (file info)
c) Critical Listening
d) Analysis (Examination procedure)
e) Opinion (Conclusion)

Tamar Forensics Audio Professional • Marisa T. Déry Report Summary • Items: 1-10

🚩 1.  “The Controlled Call Audio Recording is Not an Original.”  ➜ read more

Exif Metadata

Line 20, Original Media : False 🚩

Metadata of mp3 file using exiftool 13.29_64

🚩 2.  “Date of audio recording was actually: 2/12/2025  • Not: 2/13/2025”  ➜ read more

MARKER TIME EXIF

MakerNotesStartTime

Metadata shows the call was made on February 12th, 2025 at 11:48:14 PM and not February 13th.

🚩 3.  “At the end the Detective states 'Control Call Ended' but doesn’t leave a time.”  ➜ read more

🚩 4.  Results of search for discontinuities in background noise parameters:
“10 points of abrupt change in background detected.”  ➜ view explanation  ➜ more here

•  418_ms 🚩
•  650_ms 🚩
•  42''260_ms 🚩
•  43''049_ms 🚩
•  53''127_ms 🚩
•  55''217_ms 🚩
•  59''118_ms 🚩
•  01'01'' 🚩
•  01'02'' 🚩
•  02'14'' 🚩

RESULTS OF SEARCH FOR DISCONTINUITIES IN BACKGROUND NOISE PARAMETERS:

Background Noise Scanning :
Detected 10 points of abrupt change in background 🚩

10 Points of non-uniformity

🚩 5.  Results of search for phasing anomalies in stable technical signals:
“2 points of abrupt change in phase detected.”  ➜ view explanation  ➜ more here

•  05'33'' phase break -2.81872 🚩
•  08'09'' phase break 3.04665 🚩

RESULTS OF SEARCH FOR PHASING ANOMALIES IN STABLE TECHNICAL SIGNALS:

Phase Scanning : Detected 2 points of abrupt change in phase 🚩

2 Detected spots of feature discontinuity

🚩 6.  “A lot of sounds of someone handling the recorder.”  ➜ view explanation

🚩 7.  “At 6:53 minutes into the conversation there is a lot of movement of the recorder.”
 ➜ view explanation

🚩 8.  “Audio File is in MP3 format and not a WAV file.”  ➜ view explanation

HEX INFO

Hex information using FlexHex.

The recording is an mp3.

🚩 9.  “A "ground hum" was not detected.”  ➜ view explanation  ➜ more here

🚩 10. “Recording Device used was an Olympus WS-852 Digital Recorder”

Marisa T. Déry | Opinion

Opinion of Marisa T. Déry • Tamar Forensics:  The recording does not fit the recommended guideline for recording in a non-lab environment. 2. In addition, the police officer neglected to state the end of call time- which makes it difficult to measure the timeline. The recording does not have a clear 60 Hz DC ground hum line, which makes it difficult to determine if there was a splice in the recording. The Olympic 852 recorder generates a set formula when naming a file; the usual protocol is to save the original recording, then to clone said recording and rename it according to agency guidelines (e.g. the case name).  I recommend that we ask to analyse the original recording as it is difficult to determine its authenticity.

Marisa T. Déry | Introduction

Introduction of Marisa T. Déry • Tamar Forensics:  I, Marisa T. Déry, am the owner of Tamar Forensics LLC in Somerville, Massachusetts. I have been in the audio industry for 30+ years and have been working in audio forensics analysis for the past 19 years. From 2000-2010 I worked as a Forensic Audio consultant for the Suffolk County District Attorney’s Office, the Essex County District Attorney’s Office, the Attorney General’s Office in Massachusetts, and the Boston Police Department. I have been qualified to testify as an expert in the field of digital audio forensics, most recently testifying at the Commonwealth vs. Darrell Jones hearing. From 2006-2010, I have also worked as a Media Technician at the Audio Preservation Lab at Harvard University in Cambridge. In 2012, while I was already working with video in a non-forensic capacity, I expanded into video forensics. Previous to my forensics career, I was the Chief Engineer at the Tape Complex Inc. in Boston, Massachusetts, the once largest real-time duplicator in the Northeast. I currently hold a Certification from ETA International as an Audio Video Forensics Analyst (AVFA) -Licence AVFA215870.

Notes / Updates

The Court Ordered Original Controlled Call MP3 Audio File (Recording of Francis Paul) has still not been provided to Tamar Forensics.

🚩 • The Controlled Call Audio File provided to the Defendant's Attorney is NOT an Original.

🚩 • The Court Order to release and mail the subject Controlled Call Audio File to Tamar Forensics located in Somerville, Massachusetts; was apparently “sent to an unknown address” by the Sheriff's Department.

🚩 • As of 4-24-26 : The Sheriff's Department has still made no diligent effort to make sure the Controlled Call Audio File (Original MP3 FILE) is delivered to Tamar Forensics, to her correct address; per Court Order.

🚩 • As of 4-24-26 : Tamar Forensics, located in Somerville Massachusetts has not yet received the court ordered delivery of the Controlled Call Audio File (Original MP3 FILE) for the completion of Audio Authentication process as requested by the Defendant/Defendant's Attorney which was already approved of by the Assistant State Attorney Bailie McLaughlin and the Honorable Judge Christopher Ferebee. No coordinating delivery attemps have made by Kristina Carr, the St. Johns County Detective responsible for recording it.

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Thanks for stopping by! ... Francis (Frank) Paul ...  Y'all come back now! hear?

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“One may choose to overlook idle gossip against him, but when someone commits perjury against you before a court of law it is certainly proper to defend yourself and offer evidence to refute lies that have been told.  They should not be allowed to stand in the record against you.” ... Frank Paul