Telephone: 1.888.666.0320 Toll-Free

February - 8 - 2011

DVSA is provided FREE to US Law Enforcement through our Grant program.


Providing superior VSA features today that others promise for the future™.

Digital Voice Stress Analysis – DVSA v6.1.2 created with the power of cutting-edge nanoscience, offering a host of proven best-in-class features, and providing faster, more successful truth verification or credibility assessment examination results for criminal justice, government, military units and intelligence agencies.

*FREE DVSA™  software is provided to Law Enforcement agencies and / or individual sworn officers as a public service through Private Criminal Justice Grants by the developer – a $9,950 value.

*Examiner training tuition ($1500) and annual recertification ($300) are your only costs.

Our widely acclaimed five day training courses are hosted frequently throughout the US by sponsoring law enforcement agencies. Numerous examiners have ceased using outdated VSA systems in favor of Baker DVSA™.

RESTRICTED USE: The US Government has designated DVSA™ as “Restricted Crime Control Technology” and therefore is EXPORT RESTRICTED. Available for law enforcement, investigators, government and military units only. DVSA is not available to the general public.

February - 4 - 2011

Voice Spectrograph Mode for voice comparison and identification.

The free-ware Sound Spectrograph is a tool which has been much used to study sounds,

notably speech, since the 1940s. Most versions store the sound, and then

analyse it, displaying the results on a screen or on a paper printout. We utilize quality analogue or digital audio recordings for storage and archival purposes prior to computer display and print analysis.


The display, called a spectrogram or voiceprint, is a picture in which:

(a) the brightness of a position represents the amplitude of a

frequency component

(b) the vertical axis represents frequency of sound

(c) the horizontal axis represents time.


The Sound Software program differs from the majority of spectrographs in that

it operates continuously, performing sound input, analysis into frequencies,

and a

horizontally scrolled display. The scrolling should be smooth, with

jerky movements indicating an overload of processor time. Operation can be

stopped, and the display frozen, at any time so that the picture of a chosen

sound can be examined at leisure, and printed
out if required.