THERE ARE NO ATTACHED SENSORS, BLOOD PRESSURE CUFFS, and OR ELECTRODES as in polygraph examinations. Verbal responses are processed through a computer utilizing proprietary BAKER – DVSA software. The software detects, measures, and displays certain stress-related components of the voice. Superimposed on the audible voice frequencies are inaudible frequency modulations (FM) whose strength and pattern relate inversely to the degree of psychological stress in the speaker at the moment of utterance.
These involuntary frequency modulations result from minute oscillations of the muscles of the voice mechanism. Such oscillations, known as physiological tremor or micro-tremor, can be shown in the laboratory as a normal accompaniment to the activity of any voluntary muscle, occurring at a rate of 8-14 cycles per second. Most of the functional indicators of stress are attributed to the Autonomic Nervous System (ANS), physiological tremor as seen in the voice mechanism is controlled by the Central Nervous System (CNS); as the sympathetic branch of the ANS gains dominance in a stress situation, the micro-tremors are suppressed, and the FM in the voice utterance is moderated or completely disappears.
The voice is just the carrier of certain physiological reactions to psychological stimuli. The voice itself is not evaluated and any attempt to control the voice is a waste of energy. It simply does not work. There are no known countermeasures. Nervousness, medical disability or drugs have no effect on the evaluation.
Voice Stress Analysis examinations can protect one from improper criticism or accusations. It can verify veracity and honesty. It can verify the veracity of the account of the topics being discussed either from face-to-face interview, public speech from radio or TV, or from previous audio recordings. Cold cases are easily resurrected.
Our FORENSIC SYSTEM utilizing the BAKER-DIGITAL VOICE STRESS ANALYZER copyrighted¹ software is a fast and accurate diagnostic Voice Stress Analysis forensic truth verification system based upon sound scientific approaches, retaining some Psychological Stress Evaluator (PSE) validated and patented features. State-of-the-art high sample-rate digital capture of each utterance, space-age technology, Time-Domain Decimation, zero-padding, envelope decay, Frequency Domain Filtration, and Fast Fourier Transform digital signal processing is completed within a fraction of a second. Solutions for voice formant frequency display and Baker proprietary analysis algorithms create easy to interpret charted responses for VOICE STRESS ANALYSIS credibility assessment.
Combining the “science” of voice stress analysis and the “art” of truth verification testing, BAKER- DVSA requires standardized chart analysis, time-proven procedures, and specialized examiner training to excel in credibility assessment or covert narrative analysis. Our “system” consists of three interdependent elements; proprietary DVSA diagnostic software, appropriate test protocols, and a highly trained examiner using standardized analysis methods.
DVSA is a fully digital alternative to outdated VSA systems and polygraph. DVSA utilizes revolutionary innovations that optimize truth verification, intelligence and counterintelligence solutions providing examiners new insights like never before. DVSA techniques provide additional possibilities for covertly addressing intelligence and counter-intelligence matters. The system can be utilized for credibility assessment in any language and any culture and may be used to verify audio recording authenticity and conduct voice comparisons.
To learn more about the history of development, testimonials, and more please visit BAKERDVSA.com
