AUTOMATIC SPEAKER RECOGNITION

ACU-ASR is a voice biometric software designed to provide police forces and forensic experts with a highly accurate speaker identification tool for criminal investigations support. It uses the latest voice biometry algorithms to automatically recognize a speaker.

ACU-ASR analyses recorded speech and then compares that sample to a comprehensive speaker profile and a robust reference population to statistically assess whether an individual can be associated with that speech. Based on innovative industry-leading algorithms, this solution provides a complete set of tools to develop reference populations, build comprehensive speaker profiles, and assess the likelihood that speech of an unknown matches a target speaker profile.

ADVANTAGES

• ACCURATE PRE-FORENSIC SPEAKER IDENTIFICATION - associate speaker identities with recorded audio files, using cutting-edge, state-of-the-art voice biometric technology.
  
  
  • 1:1 identification and 1:n identification
  • unknown speaker recording (or voiceprint) comparison against a group of recordings (or voiceprints) with a known speaker
    
• EASILY PRODUCE A DETAILED FORENSIC REPORT containing a graphical representation of the Log Likelihood Ratio.
  
  
• SUPPORT FOR ROBUST REFERENCE POPULATIONS. Reliably estimate Inter-Speaker Variation by defining a representative set of voice samples with common features (gender, language, dialect, etc.) to estimate the probability that a given voice sample belongs to a known speaker, rather than to a random individual.
  
  
• VERIFY RELIABILITY WITH OBSERVED TIPPETT PLOTS. Measure the strength of voice evidence graphically with a system-generated Tippett Plot graph comparing the log likelihood ratio (LLR) and the residual error in the system. Tippett Plots represent all the certified results of previous comparisons, including matches and mis-matches, and demonstrate how strongly the present LLR supports the prosecution’s hypothesis.
  
  
• LANGUAGE, ACCENT, TEXT AND CHANNEL INDEPENDENT TECHNOLOGY. The system is trained on wide range of audio sources (GSM, PSTN, VoIP, and other channels).
  
  
• VERIFIED BY NIST. Applies state-of-the-art channel compensation techniques, verified by NIST SRE evaluations.