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2024 AES Forensics Conference

NCMF Training Courses Summer 2024
AI-Generated Audio and Python 101 (AG1)

— IN-PERSON —

June 24-26, 2024

9:00-5:00 pm (MT) in-person meeting in Denver, Colorado

Instructor: Jeff Smith
Registration Deadline: June 20
Cost: $1,500

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Course Description: Artificial Intelligence (AI) is changing the world in nearly unimaginable
ways. From deepfakes to ChatGPT, advances in synthetically generated media open new forms
of entertainment, art, and communication while creating new threat vectors for crime and
victimization. Forensic practitioners working with digital evidence need to understand the
threat of AI generated media by understanding how various techniques work, what their
limitations are, and what artifacts or forensic traces are left behind. This course will dig deeply
into understanding AI and its application in audio by exploring speech analysis and synthetic
voice generation. Attendees will learn the fundamentals of processing and generating audio
with Python by using open-source libraries and applications to set the stage for tasks such as
forensic audio analysis and authentication.
This course will take a hands-on approach to audio and is designed for all skill levels with no
previous Python experience needed. The course will cover the basics of Python programming,
audio processing, and synthesis. However, students should be familiar with the computer
command line (e.g., Mac Terminal, Windows Powershell).
*Please note that some of the methods and software discussed and presented may only be
available for demonstration purposes and/or to law enforcement agencies.

Course Outcomes:

Knowledge

Students will:
• Gain new perspectives to understand:
• How open-source software can be leveraged.
• Application techniques for Python.
• How Deep Learning AI is applicable to audio.
• Acquire knowledge that either enhances or is not covered in scientific literature.

Skills

Students will:
• Demonstrate a familiarity with Python and open-source repositories.
• Create AI-generated data that can be used in the lab for testing and evaluation.

Dispositions

Students will:
• Gain an appreciation for specific issues in forensic audio.
• Appreciate the need to understand new techniques capable of carrying out crime, fraud,
and victimization.
• Be able to critically evaluate different deep learning processes and algorithms.
• Enhance awareness of needs and opportunities in the field of forensic audio.

Course Schedule (Subject to Change):

Day 1: Python 101
− Environments and Notebooks
− Working with Data
− Processing Audio

Day 2: AI and Audio
− Speech Recognition
− Speaker Analysis

Day 3: AI-Generated Audio
− Synthetic Audio Generation
− Synthetic Voice Generation

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Accordion Tab Title 2

— IN-PERSON —

June 30-July 2, 2024

9:00 am-5:00 pm (MT) in-person meeting in Denver, Colorado

Instructor: Catalin Grigoras
Registration Deadline: June 20
Cost: $1,500

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Course Description: Students will explore techniques to address challenges in the
authentication of digital audio with regard to evidence admissibility and counterfeit detection.
Foundations for forensic audio authentication, digital recording techniques, audio formats, and
time domain analyses will be discussed. Students will complete hands-on exercises using real
audio examples and forensic casework.
Previous experience/formal training with digital evidence is recommended.
*Please note that some of the methods and software discussed and presented may only be
available for demonstration purposes and/or to law enforcement agencies.

Course Outcomes:

Knowledge

Students will:
• Gain new perspectives to understand:
• The latest forensic audio authentication techniques.
• Advanced principles of forensic audio authentication.
• Forensic techniques, emerging science, and limitations of the forensic expert.
• Digital evidence seizure and acquisition.
• Acquire knowledge that either enhances or is not covered in scientific literature.


Skills

Students will:
• Take entrance and exit exams to gauge course’s effectiveness while informing student
regarding the advancement of their knowledge.
• Understand the questions that a forensic expert can answer.
• Know how to manipulate digital evidence and apply advanced techniques for forensic
audio authentication.
• Demonstrate a familiarity with general topics related to forensic audio.


Dispositions

Students will:
• Gain an appreciation for advanced issues in forensic audio.
• Be able to critically evaluate different forensic audio equipment, software, and
methods.
• Enhance awareness of needs and opportunities in the field of forensic audio.

Course Schedule:
1. Foundations for Forensic Audio Authentication
1.1. Digital Recording Techniques
1.2. WAV Format
1.3. Lossy Compression Formats
2. Theory, Demonstration, and Practice
2.1. Digital Evidence Seizure and Acquisition
2.1.1. Structure and Format Analysis
2.1.2. Time Domain Analysis
2.1.2.1. Zero Level Padding
2.1.2.2. Direct Current (DC)
2.1.2.3. Power
2.1.2.4. Butt-Splice Detection
2.1.2.5. Stereo Phase Analysis
2.1.3. Frequency Domain Analysis
2.2.3.1. Long Term Spectrum Analysis (LTAS)
2.2.3.2. Modified Discrete Cosine Transform (MDCT) Analysis
2.1.4. Other Analysis
2.2.4.1. Electric Network Frequency (ENF)
2.2.4.2. Copy-Insert (Clone) Detection

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Schedule at a Glance June 27- 29, 2024 Denver, Colorado, USA
***As of February 15, 2024. The schedule is subject to change
June 27, 2024

7:30 AM – 8:30 AM  Registration
8:30 AM – 9:30 AM  Opening Ceremony & Keynote
9:30 AM – 10:00 AM  Morning Coffee Break
10:00 AM – 12:00 PM  Paper Sessions
12:00 PM – 1:30 PM  Lunch, Exhibition Break & Poster Sessions
1:30 PM – 3:30 PM  Paper Sessions
3:30 PM – 4:00 PM  Afternoon Coffee Break
4:00 PM – 5:00 PM  Paper Sessions
5:30 PM- 7:30 PM  Networking Reception

June 28, 2024

7:30 AM – 8:30 AM  Registration
8:30 AM – 9:30 AM  Workshop 1
9:30 AM – 10:00 AM  Morning Coffee Break
10:00 AM – 12:00 PM  Paper Sessions
12:00 PM – 1:30 PM  Lunch, Exhibition Break, & Poster Sessions
1:30 PM – 3:30 PM  Paper Sessions
3:30 PM – 4:00 PM  Afternoon Coffee Break
4:00 PM – 5:00 PM  Paper Sessions

June 29, 2024

7:30 AM – 8:30 AM  Registration
8:30 AM – 9:30 AM  Workshop 2 & Paper Sessions
9:30 AM – 10:00 AM  Morning Coffee Break
10:00 AM – 12:00 PM  Paper Sessions
12:00 PM – 1:30 PM  Lunch, Exhibition Break, & Poster Sessions
1:30 PM – 3:30 PM  Paper Sessions
3:30 PM – 4:00 PM  Afternoon Coffee Break
4:00 PM – 5:00 PM  Paper Sessions, Outstanding Submission Award, & Closing Ceremony

Topics Include
Forensic Audio Analysis Techniques
  • Spectral Analysis
  • Speaker Recognition Technology
  • Audio Enhancement
  • AI-Based Audio Generation and Detection
  • File Handling / Pre-Examination
  • Expert Witness Testimony
  • Admissibility of Audio Evidence
  • Professional Organizations
  • Bias Mitigations
Advances in Audio Forensic Technology
  • Machine Learning in Audio Analysis
  • Digital Audio Authentication
Audio Forensics in Criminal Technology
  • Crime Scene Audio Analysis
  • Cold Cases and Audio Reexamination
Audio Forensics in Intelligence and National Security
  • Surveillance Audio Analysis
  • Cybersecurity and Audio Threats
Case Studies

Program

Wednesday, September 6 – “How We Teach”

8:00 – 9:30

Registration + coffee

9:30 – 10:00

Welcome and Introduction

10:00 – 11:00

Invited Lecture 1: Miriam Iorwerth

“The Present of Audio Education”

11:15 – 12:00

Sound Bites & Coffee Moaning

12:00 – 12:40

Papers 1

“Embedding Observation in Audio Education Software: A Preliminary Perspective”

Kevin Garland

 

“Hybrid Teaching: AV Design Implementation for Music Lectures in Higher Education”

Iker Ormazabal Martinez

12:40 – 13:30

Lunch

13:30 – 14:10

Papers 2

“Unveiling the Female Ear”

Amandine Pras

 

“Audio, Acoustics, Wellbeing and the Environment”

Ben Mosley

14:15 – 15:15

Workshop 1

“Get Back: What Does Decolonised Audio Equipment, Education, and Research Purpose Look Like?”

Amandine Pras, Kirk McNally, Kolawole Ganikale, Éliézer OubdaJude Brereton and Abdallah Ag Amano

15:45 – 16:45

Workshop 2

“Embedding Sustainable Development in the Audio Curriculum”

Ben Mosley

17:00 – 18:00

Honorary Keynote: Jamie Angus-Whiteoak

“Audio DSP Education: Keeping It Real”

18:00 – …

(Social Event)

Thursday, September 7 – “What We Teach”

8:30 – 9:30

Registration + Coffee

9:30 – 10:30

Keynote 2: Leslie Gaston-Bird

“Immersive and Inclusive: Cracking the Credibility Code”

10:30 – 11:30

Papers 3 (vocational theme)

“The Music Technology Ensemble: An Approach to Implementing Problem-Based Learning for Newcomers in Audio Education”

Anthony Marasco

 

“The L-Acoustics Program for Vocational Education in Loudspeaker System and Immersive Audio”

Etienne Corteel

 

“Making Connections – A Work Experience Case Study”

Patrick Quinn

11:30 – 12:00

Coffee Break

12:00 – 13:00

Papers 4 (critical listening)

“Taxonomy of Critical Listening for Sound Engineers”

Stephane Elmosnino

 

“FREQUIA – Development of an Adaptive, Personalized Technical Ear Training”

Mark Bassett

 

“Trained Listeners Assessing the xHE-AAC Codec Performance for Streaming Audio-for-Video Broadcast”

Christoph Thompson

13:00 – 14:00

Lunch

14:00 – 15:00

Workshop 3

“A Novel 3D Audio Teaching Tool for Analysis of Microphone Arrays”

Mike Williams

15:00 – 15:30

Coffee Break

15:30 – 16:30

Workshop 4

“Issues and Strategies for Teaching Audio Mastering”

Russ Hepworth-Sawyer

17:00 – 18:00

Platinum Talk: Loop Earplugs

18:00 – …

(Social Event)

Friday, September 8 – “What’s Next?”

 

9:30 – 10:00

Registration + Coffee

10:00 – 11:00

Keynote 3: Gillian Desmarais

“The Future of Audio Education in Primary and Secondary Public Schools”

11:00 – 11:30

Sonic Networking: Finding Collaborators in HE

11:30 – 12:00

Coffee Break

12:00 – 13:00

Papers 5 (school education, diversity)

“The STrOOM Framework: Using ICT in Schools to Foster Music Education in Elementary and Secondary Schools in Belgium”

Frank Duchêne


“De-fetishizing Audio Signals and Technologies in Bamako (Mali)”

Emmanuelle Olivier


“Educating the Educated: Challenges in Teaching Acoustics to Students With Existing Working Experience”

Elena Prokofieva

13:00 – 14:00

Lunch

14:00 – 15:00

Workshop 5

Do Musicians Need to Learn Music Software?”

Rob Toulson, Mike Exarchos, Ryan Van Bibber and Gillian Desmarais

15:00 – 15:30

Coffee Break

15:30 – 16:30

Workshop 6

“Archives in Audio Education: From ‘I don’t care’ to ‘I am here'”

Kirk McNally, Paul Thompson, Toby Seay and Nyssim Lefford

16:30 – 17:00

Sound Reflections: Closing Remarks

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