Cassian Baliarsingh

Gopal Krishna Das, the dismissed Assistant Sub-Inspector (ASI), accused of killing Odisha health minister Naba Das is currently undergoing Forensic Psychological Assessment and Layered Voice Analysis (LVA) Test.

A team of CFSL, New Delhi is conducting the test on the suspended ASI at Jharsuguda. A special medical board has been constituted to study the mental health of the accused.

Not many people know about LVA. So, OTV spoke to Muralidhar Nayak, Forensic Expert to know in details about the Israeli-developed technology.

The new technology is used to detect and measure emotions in a person’s voice while speaking. In other words, it is called genuine emotion detection – a new science aimed at identifying the true feelings of a person.

Forensic Psychologists conduct this LVA test on accused and detect the truth based on the variation/changes of his voice during the interrogation. Based on the variations, the Psychologists study the mental and emotional changes of the accused during each question and understand if he is telling the truth or lying.

When the accused tries to hide the truth or stammers during interrogation, there are changes in his voice. This is detected by the LVA that helps identify various types of stress, cognitive process and emotional reactions.

LVA mostly detects emotions like excitement, enthusiasm, assertiveness, aggression, stress, frustration and fatigue. Although not 100% perfect, the LVA technology helps the enforcement agencies to solve complex cases by helping them find the right clues.

Meanwhile, the JMFC court in Jharsuguda has allowed Crime Branch to take Gopal Das on another 4-day remand. On the other hand, the 22 pieces of paper chits recovered from the Jharsuguda airport police station septic tank has been sent to the Handwriting Bureau for examination.

Documents seized from the paternal house of the accused in Berhampur and the financial details of Gopal Das, his wife, brother and other close relatives are also being scrutinized, reports said.


(Reported by Alok Mohanty, OTV)