The VIPRE Original

VASIS

A voice-based, question-driven stress identification platform designed for structured interviews, screenings, and investigative procedures.

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Lenovo IdeaPad
Microphone
Carrying case
Mouse
VASIS software

Hardware and field configuration

VASIS is configured for portable investigative work, combining its computer platform, microphone system, and setup controls in a streamlined field-ready package.

Lenovo IdeaPad 15.6-inch touchscreen laptop with 16 GB RAM and a 512 GB solid-state drive
VIPRE specialized digital microphone and custom lanyard intended to maintain acoustic integrity across sessions
Carrying case
Mouse
VASIS software for voice stress analysis
Auto-calibrating microphone, automatic gain control, and advanced sound capture to reduce manual setup adjustments
Intuitive menu system and pre-built templates that minimize setup time for structured examinations

Online voice stress analysis training

Explore VIPRE’s Online Training Center for basic certification, recertification, and flexible 24/7 learning access. Confirm the right course for your experience and VIPRE system before enrollment.

Explore online VSA training and certification ›

What VASIS is designed to do

VASIS assists trained examiners in identifying relative autonomic stress indicators associated with specific questions during structured interviews, screening environments, and investigative procedures. It is an advisory investigative support tool. It does not determine truth or deception, and it does not replace examiner judgment or a complete investigation.

Stress pattern analysis

VASIS applies examiner-guided analytical methods informed by vagal-response research and structured testing protocols. It does not rely on population norms, automated truth scoring, or conclusions independent of examiner judgment.

Real-time color-coded pattern display: black for No Stress Indicated and red for Stress Indicated
Automatic gain control and advanced sound capture to eliminate repeated voice samples and manual modulation adjustments
Auto-sizing graphics designed to preserve consistent voice pattern quality
A VIPRE digital microphone and custom lanyard intended to maintain acoustic integrity across sessions
Live charts compile continuously as questions are asked, supporting real-time monitoring and later evaluation

Structured workflow and examiner control

VASIS begins with six prompted data fields that identify the examiner and test subject while initiating auto-test generation. The examiner selects the number of relevant questions, and the system creates a test sequence with relevant, control, and irrelevant questions. Category-based templates can be created and saved for pre-employment, investigative, and internal affairs scenarios.

On-screen pre-examination review and confirmation of questions and subject responses
Accept or reject individual voice patterns during a live examination
Add on-screen notes under individual patterns
Transition between charts without breaking the examination record
Store, print, or email completed examinations for evaluation

Evidence, intended use, and evaluation

Product features describe the examination workflow. They do not, by themselves, establish an accuracy rate or show that a stress indication identifies deception. Assess performance evidence for the exact system, version, population, and intended task.

General research on stress and speech provides scientific context. The NIJ jail field test evaluated CVSA and LVA, not AISIS or VASIS; that distinction does not validate VIPRE products. A trained examiner must consider alternative causes of stress and independently corroborate investigative leads.

Read the voice stress analysis evidence guide ›Check study findings and limits ›Meet the VIPRE team ›

Included with your VASIS system

VASIS includes two 40-hour Basic Examiner Certifications through the VIPRE Online Training Center, a one-year parts and labor warranty, and ongoing access to VIPRE technical support and training resources. The system is designed to support consistent analytical review while retaining the examiner as the final interpretive authority.